阅读说明：本技术 一种用于遗址砖石抗风化加固材料的试验方法 (Test method for anti-weathering reinforcing material for site masonry ) 是由 卢训 于 2019-09-25 设计创作，主要内容包括：本申请石材和石质文物保护技术领域中一种用于遗址砖石抗风化加固材料的试验方法：包括：步骤一、采集数据：采集相关数据,为室内环境模拟提供数据支持；步骤二、样本的选择：选择遗址内掉落的砖石和遗址建造初期采石场的新鲜岩块制样作为两组供试样本备用；步骤三、加固材料的选择：选择水硬性石灰和各种添加剂按照不同比例制成加固材料；步骤四、将步骤三的加固材料分别作用在步骤二的供试样本上得到修复样本,放置到室内进行抗风化实验模拟,结合水岩作用、水盐作用和温度作用下的风化机理进行研究,选择适宜该遗址的加固材料。找到适宜不同遗址使用的加固材料。(The application relates to a test method for an anti-weathering reinforcing material for site bricks in the technical field of stone and stone cultural relic protection, which comprises the following steps: the method comprises the following steps: step one, data acquisition: collecting related data to provide data support for indoor environment simulation; step two, selecting a sample: selecting bricks and stones falling in the site and fresh rock block samples of a quarry at the initial construction stage of the site as two groups for sample preparation; step three, selecting a reinforcing material: hydraulic lime and various additives are selected to be made into reinforcing materials according to different proportions; and step four, respectively acting the reinforcing materials in the step three on the sample to be tested in the step two to obtain a repair sample, placing the repair sample indoors for weather resistance experiment simulation, researching by combining the weather mechanism under the actions of water and rock, water and salt and temperature, and selecting the reinforcing materials suitable for the site. Find out the reinforcing material suitable for different sites.)

1. A test method for a wind-resistant reinforcing material for site masonry is characterized by comprising the following steps of; the method comprises the following steps:

step one, data acquisition: selecting detection equipment, monitoring and collecting indexes of meteorological environment, temperature and humidity environment, hydrological environment and wind power condition of the site, and providing data support for indoor environment simulation;

step two, selecting a sample: selecting bricks and stones falling in the site and fresh rock block samples of a quarry at the initial construction stage of the site as two groups for sample preparation;

step three, selecting a reinforcing material: hydraulic lime and various additives are selected to be made into reinforcing materials according to different proportions;

and step four, respectively acting the reinforcing materials in the step three on the sample to be tested in the step two to obtain a repair sample, placing the repair sample indoors for weather resistance experiment simulation, researching by combining the weather mechanism under the actions of water and rock, water and salt and temperature, and selecting the reinforcing materials suitable for the site.

2. The test method for the efflorescence-resistant monolithic block of claim 1, wherein: the research of the water-rock action in the fourth step is as follows: the method mainly comprises the steps of analyzing the substance components of a repair sample, mainly analyzing and testing the expansibility, the soluble mineral components and the cementing material components, testing the indexes of uniaxial compressive strength, tensile strength, shear strength and elastic modulus of the repair sample under the conditions of different water contents, dry-wet cycles and freeze-thaw cycles, comparing and analyzing the change rule and the internal mechanism of each parameter under different conditions, and analyzing the chemical dissolution and degradation mechanism of the repair sample by utilizing the test technical means of CT scanning, pore microscopic measurement and scanning electron microscope.

3. The test method for the efflorescence-resistant monolithic block of claim 1, wherein: the research of the water salt effect of the step four is as follows: analyzing and researching the migration rule of the salt solution in the restoration sample, wherein the migration rule comprises migration speed, distribution characteristics of a salt concentration area and permeability coefficients of salt solutions with different concentrations in sandstone, analyzing pore structure characteristics and distribution rules of samples before and after salt crystallization by using a mercury porosimeter, observing the structure characteristics of the restoration sample and the distribution rules of salt particles before and after crystallization by using a scanning electron microscope microcosmic observation, and analyzing and clarifying the crystal expansion of the salt and the destruction mechanism of masonry in the restoration sample from two visual angles of macro and microcosmic based on a geotechnical mechanics theory and a crystal expansion theory.

4. The test method for the efflorescence-resistant monolithic block of claim 1, wherein: the research of the temperature effect in the fourth step is as follows: curing the repaired sample under different temperature conditions, then testing the wave velocity characteristics, the compressive strength, the damage form and the damage characteristics of the repaired sample, and analyzing and discussing the influence of temperature change on each parameter; by utilizing the technical means of CT scanning and SEM scanning electron microscope microscopic test, the distribution and development rule of the microcracks of the repaired sample under the influence of temperature and the change rule of the internal structure along with the temperature are analyzed and discussed from a microscopic visual angle.

5. The test method for the wind-resistant reinforcing material for site masonry according to any one of claims 1 to 4, characterized by comprising: in the third step, the weight ratio of the hydraulic lime to the additive is 100: 0 to 10.

6. The test method for the efflorescence resistant reinforcing material for ancient site masonry according to claim 5, characterized in that: the additive comprises one or more of fly ash, animal glue, plant polysaccharide, polypropylene fiber or methyl cellulose ether.

Technical Field

The invention relates to the technical field of stone and stone cultural relic protection, in particular to a test method for a historic site masonry weathering resistant reinforcing material, and mainly relates to a method for judging the historic site masonry weathering resistant reinforcing material of a sea dragon Tung historic site.

Background

The problem of weathering masonry cultural relics is always a main problem in the protection work of immovable cultural relics. Because the cultural relics cannot be moved indoors like other cultural relics, the cultural relics are necessarily damaged by various adverse factors in the nature. Although scientists in all countries around the world do a lot of work to protect these cultural relics, the problem of efflorescence is still very severe. Typically the egyptian pyramid and lion figure, are difficult to solve due to the protective work until the end of the last century every year due to weathering causing flaking of a few centimeters in thickness. And cultural relics such as church sites and stone statues which are distributed in many parts of Europe, and the weathering problem of surface materials (bricks and stones) of the cultural relics is still a focus of attention of many researchers. The ancient buildings such as grottos, ancient graves and stone graves have considerable proportion of brick and stone structures in China, so that the amount of the brick and stone buildings is huge in general and most of the brick and stone buildings are severely weathered at present. In the last two decades, China successively applies large-scale protection projects to Maitake grottos, Dunhuang Mogao Grottoes, Leshan Buddha, big foot gravels and the like, and obtains attractive achievement for the world. However, in general, there is a long way to completely solve the efflorescence problem. Because the understanding of the weathering mechanism of masonry cultural relics is not further deepened at present. Related research documents are still lacking in quantitative research of weathering mechanism and influencing factors. The method greatly restricts the large-scale implementation of targeted engineering measures and causes great obstacles to the field of cultural relic protection engineering.

Studies have shown that the weathering of masonry cultural relics mainly includes physical, chemical and biological weathering. The physical weathering mainly comprises the lubrication, softening and argillization of water on the masonry, the dry-wet cycle and freeze-thaw cycle, the stress difference effect caused by temperature gradient, the expansion pressure effect caused by salt crystallization and the like. Chemical efflorescence includes dissolution, hydration, hydrolysis, acidification, and oxidation. Biological weathering mainly relates to the destructive effect of organisms on masonry in the growth and metabolism process, such as root cleavage, the corrosive effect of organic acid substances on rock and soil bodies and the like. The area of the ancient residence of the dragon tunny has large precipitation, and water plays a very key role in the weathering process of the bricks and stones. The deterioration mechanism of the mechanical properties of the non-disintegrating rock under the interaction of water and rock can be mainly attributed to the fact that the bonding among particles is weakened due to the erosion of the internal cementing substances. The dissolved minerals will fill the fracture with more water, accelerating the erosion of the microcrack tips and increasing the stress at the tips, encouraging further degradation, especially at higher hydraulic gradients where water-rock interactions are more pronounced. Meanwhile, the internal structure of the degraded rock is changed, so that the water quality, the flow rate, the hydraulic gradient and the like are correspondingly changed, and the water-rock interaction is promoted. In the case of disintegrating rocks, the deterioration mechanism is also related to the compression of the air inside the rock upon water absorption, resulting in an increase in the pressure thereof. For low temperature environment (below 0 ℃), the deterioration mechanism of the rock can be mainly attributed to the different expansion coefficients of the various constituent minerals, uneven expansion and contraction and expansion pressure generated by water freezing, so that the internal structure of the rock is changed. Therefore, the strength of the water-rock interaction is comprehensively influenced by factors such as rock microstructure, mineral composition, hydrogeological environment and the like.

Besides participating in softening, erosion, freeze-thaw expansion damage to masonry and altering the hydrological environment in which masonry is found, another key role of water is manifested by the transport migration and cumulative crystallization of salts. 6-9 months belong to rich water period in the area that the sea dragon tun ruins the site, and precipitation is more, and the rainwater moves along the crack, dissolves a large amount of mineral substance salinity, and along with the continuous evaporation of moisture, the inside salt of masonry along with moisture constantly gathers to the surface along with the moisture at later stage, leads to a large amount of soluble salt of masonry surface or top layer enrichment, and the form is crystalline, powdered or fibrous, extrudes the cliff, encourages the collapse. The surface of the masonry generates micro cracks or the surface layer swells, and the masonry is in weathering damage such as granular scaly denudation and the like. The deterioration of the porous material due to the cumulative crystallization of the salt is theoretically considered to be mainly caused by the causes of 3 aspects: crystallization pressure, i.e. evaporation pressure, causes the solution to be supersaturated, and soluble salt in the solution is crystallized and generates expansion pressure on the inner walls of pores or cracks; hydration pressure, namely partial soluble salt is hydrated to expand when meeting water, and expansion pressure is generated on the inner wall of the pore or the crack; temperature difference stress, namely the difference of the thermal expansion coefficients of the soluble salt and the insoluble rock mineral, is generated between rock crystals in the process of rapid temperature rise or temperature drop. Efflorescence of rock and soil bodies caused by salt crystallization is generally called salt damage phenomenon, but different disciplines have different names. Geology generally has studied salt damage into the physical weathering process. The study on the durability of the natural stone generally refers to a petrology method and also belongs to the study on a physical weathering process. The construction industry generally refers to the phenomenon of white salt spots on the surface of masonry as salt bloom. The salt damage phenomenon of the mural is called as the shortenine or is further called as pulverization, falling off and the like according to the damage form of the mural caused by the salt damage by Chinese cultural relic protectors. Although materials such as rocks, masonry, concrete, clay murals, etc. have great differences in performance, they all belong to pore media and develop capillary pore systems that are in communication with each other. The salt damage phenomenon of different pore materials is analyzed, the relationship between water and salt migration and salt weathering is discussed, the physical and mechanical essence in the porous material is refined, the understanding level of the salt damage of rock and soil bodies is improved, and therefore a scientific theoretical basis is provided for fundamentally solving the salt damage problem of the porous material.

Large immobile cultural relics exposed to the natural environment often experience relatively drastic changes in temperature difference between days. Therefore, thermal degradation plays a non-negligible role in the degradation process of cultural relics. However, temperature effects have long been considered as an auxiliary influencing factor and have not received much attention. In fact, the temperature monitoring data of masonry cultural relics has been compared with the system. Many scholars propose that strong temperature change is one of causes of damage to the ancient sites of the open-air geotechnical cultural relics, but research on the thermophysical properties of the cultural relics and the temperature fields of the cultural relics is still less. The thermal degradation of the geotechnical architecture site refers to irreversible physical and chemical damages caused by the change of the thermal properties of the body or the heat transfer process in the complex external environment. Considering the natural environment of the open-air geotechnical site and three basic modes (heat conduction, heat convection and heat radiation) of heat transfer, the external factors of the open-air geotechnical site heat deterioration include solar radiation intensity, rainfall, wind speed and the like, and the internal factors include material characteristics, heat conductivity coefficient, convection heat exchange coefficient, light absorption coefficient and the like of the body. From a thermal point of view, the thermal phenomena of the geotechnical sites are represented by the changes of temperature and temperature gradient, so that the temperature is an important influence factor causing the thermal degradation of the sites, because the temperature changes can cause the uneven expansion of the material and the tensile stress between the surface and the internal structure. Temperature cycling can produce alternating thermal stresses, causing mechanical efflorescence and accelerating fatigue failure of the material: the faster the cycle, the greater the temperature gradient inside the material, the more intense the thermal wave propagates inside the material, and the greater the stress, the faster the ageing and destruction of the surface layer occurs. The daily cycle of temperature is therefore more important than the seasonal cycle in contributing to thermal degradation. The expansion mechanism is also important for structural stability. Microscopically, temperature cycling may cause mechanical dispersion of the surface, starting with fracture of the interface between different minerals. The thermal anisotropy of the crystal lattice, the size and the spatial structure of the particles determine the internal tension of the system, leading to the surface dispersibility of the particles, and the larger the particle, the higher the tension and the faster the degradation.

At present in historical relic protection field, mainly divide into two major directions to the research of brick stone class historical relic weathering protection reinforcement technique: one direction is the application and development of new materials in new technologies, and the other is the development of traditional materials and processes. Because new materials and processes are produced in relatively short periods of time, there is often a lack of proof of durability and related research in the area of cultural relic preservation, and therefore the development of these materials and processes is more focused on the accumulation and stocking of technology; the need for conventional materials and related processes has become more acute for the important cultural relics which are now urgently protected and strengthened. The reinforcement and protection of the rock and soil cultural relics such as the brick and stone should highly attach importance to the application of the traditional process and materials. The traditional method is applied to the reinforcement protection of the rock-soil cultural relics, and the harmony and unity of cultural relic protection are embodied. In most cases of reinforcing and protecting cultural relics, the application of the traditional process and materials to the cultural relics protection is the first choice from the viewpoint of reinforcing effect and long-term preservation of the cultural relics, but the theoretical research of the traditional process and materials and the application of reinforcing and protecting are relatively lagged, and the requirements of reinforcing and protecting the geotechnical cultural relics are far from being met. Therefore, the research of the traditional reinforcement technology needs to be promoted to a new height, so that the selection of a proper traditional reinforcement material to adapt to the reinforcement requirement of the masonry cultural relics under different environments is only urgently solved at present.

Disclosure of Invention

The invention aims to provide a test method for a weathering-resistant reinforcing material for site masonry, which is used for selecting a more appropriate reinforcing material for cultural relic masonry under different climatic conditions.

The invention discloses a test method for a weathering-resistant reinforcing material for site bricks, which comprises the following steps:

step one, data acquisition: selecting detection equipment, monitoring and collecting indexes of meteorological environment, temperature and humidity environment, hydrological environment and wind power condition of the site, and providing data support for indoor environment simulation;

step two, selecting a sample: selecting bricks and stones falling in the site and fresh rock block samples of a quarry at the initial construction stage of the site as two groups for sample preparation;

step three, selecting a reinforcing material: hydraulic lime and various additives are selected to be made into reinforcing materials according to different proportions;

step four, respectively acting the reinforcing materials in the step three on the sample to be tested in the step two to obtain a repair sample, placing the repair sample indoors for weather resistance experiment simulation, researching by combining the weather mechanism under the actions of water and rock, water and salt and temperature, and selecting the reinforcing materials suitable for the site

The working principle and the beneficial effects of the invention are as follows: the test method of the invention is based on the difference of meteorological environment, temperature and humidity environment, hydrological environment, wind power and the like of different sites, the weathering environment is simulated by a laboratory, the falling masonry in the site and the masonry of an initial quarry constructed by the site are collected as test samples, the test samples are bonded and repaired by the reinforcing material prepared by matching conventional hydraulic lime and different additives, and the reinforcing material is placed in the laboratory for weathering test, the weathering resistance degree of the repaired different reinforcing materials is researched, and the weathering mechanism under the action of water and rock, the action of water and salt and the action of temperature is researched, so that the reinforcing material suitable for different sites is found.

With regard to the research on hydraulic lime materials, foreign scholars have many relevant research results, and mainly concentrate on the aspects of material composition analysis, physical and mechanical properties and influencing factors, carbonization, modification and improvement of materials and the like. For the analysis of the composition of matter of hydraulic lime materials, some measuring methods in the cement industry, such as electron microscopy, the Bogue method, etc., were primarily used for early years. With followingAs a result of intensive studies, researchers have found that the above-mentioned measuring methods are not suitable for hydraulic lime materials calcined at high temperature, and therefore, X-ray diffraction methods have been introduced into quantitative tests of the material components of the materials and have made certain improvements to the methods. Pav i a et al investigated the effect of aggregate shape, particle size range, calcite content, etc. on material strength, porosity, water absorption, substrate suction, density, etc. in natural hydraulic lime materials. Lanas et al studied the mechanical strength properties of natural hydraulic lime materials, indicating that the aggregate properties and porosity are the main factors affecting their mechanical strength. Adel et al studied the effect of dehydration on the mechanical strength and microstructure of natural and man-made hydraulic lime materials and found that dehydration can increase the compressive strength of both materials to some extent. The rheology of hydraulic lime materials is also an important aspect to consider if it is used as a grouting material. Eriksson et al indicate that the temperature of water in the environment and material is one of the important parameters affecting the rheological properties of the grouting material by continuously monitoring the rheological properties of the material over several days. Casanova et al also performed related studies with similar results. In addition, factors affecting the material properties also include factors such as initial water content, mixing and stirring time, and the like. Carbonation of lime materials has been a focus of attention and has increased the strength of the materials but also caused deformation and, in the worst case, cracking of the materials. The durability of lime materials is also closely related to carbonation when the lime material is cured to become part of a building. The carbonation process of lime materials is affected by a number of factors, such as air relative humidity, temperature, CO₂Concentration, material composition, etc. Shih et al found that if the air humidity exceeded 8%, Ca (OH)₂Then it cannot react with CO₂Reaction to form CaCO₃. The products of the carbonation process are typically calcite or aragonite (CaCO)₃) And the process is typically very long lasting, even reaching centuries. The researchers later considered the addition of some additives (such as fly ash material) to the hydraulic lime materialOrganic materials, etc.) to improve certain properties of the material (such as reducing the water loss shrinkage deformation characteristics of the material, improving mechanical strength, and resistance to carbonization). The Ana Bras et al studied the addition of fly ash as an additive to hydraulic lime and the properties of the mixture as a grouting reinforcement material, and found that the addition of fly ash in different proportions significantly changes the parameters of hydraulic lime and that this change is significantly different with changing temperature conditions. In addition, due to the smaller particle size of the fly ash particles compared to the hydraulic lime material particles, the mixing of the two can significantly reduce the porosity of the material, thereby improving the durability of the mixed material to some extent. Ventol-a et al, added organic materials to lime materials, and found that the addition of animal gum significantly increases the strength of the lime materials, the addition of vegetable polysaccharide materials increases the carbonation resistance of the lime materials, and the addition of animal grease decreases the porosity of the lime materials.

Because the weathering resistance of different reinforcing materials in different environments is different, simulation research is necessary, the evaluation of the weathering resistance of different reinforcing materials in the simulated environment is also performed, meanwhile, in order to reduce noise interference on the reinforcing materials caused by different weathering degrees, materials of a quarry at the initial stage of construction are supplemented to be used as test samples, so that the reinforcing materials suitable for the masonry at different sites are obtained, and powerful support is provided for protecting the sites.

Meanwhile, in the invention, in order to well research the mechanism of the weathering resistance, the research of the mechanism of the weathering resistance under the actions of water and rock, water and salt, temperature and wind is combined as data support and reference, and the invention also provides powerful support for protecting the ancient sites.

Further, the research on the water-rock action in the step four is as follows: the method mainly comprises the steps of analyzing the substance components of a repair sample, mainly analyzing and testing the expansibility, the soluble mineral components and the cementing material components, testing indexes such as uniaxial compressive strength, tensile strength, shear strength and elastic modulus of the repair sample under the conditions of different water contents, dry-wet cycles and freeze-thaw cycles, comparing and analyzing the change rule and the internal mechanism of each parameter under different conditions, and analyzing the chemical dissolution and degradation mechanism of the repair sample by utilizing the test technical means of CT scanning, pore microscopic measurement and scanning electron microscope.

Further, the research on the water-salt action in the step four is as follows: analyzing and researching the migration rule of the salt solution in the restoration sample, wherein the migration rule comprises migration speed, distribution characteristics of a salt concentration area and permeability coefficients of salt solutions with different concentrations in sandstone, analyzing pore structure characteristics and distribution rules of samples before and after salt crystallization by using a mercury porosimeter, observing the structure characteristics of the restoration sample and the distribution rules of salt particles before and after crystallization by using a scanning electron microscope microcosmic observation, and analyzing and clarifying the crystal expansion of the salt and the destruction mechanism of masonry in the restoration sample from two visual angles of macro and microcosmic based on a geotechnical mechanics theory and a crystal expansion theory.

Further, the study of the effect of the temperature in the fourth step is as follows: curing the repaired sample under different temperature conditions, then testing the wave velocity characteristics, the compressive strength, the damage form and the damage characteristics of the repaired sample, and analyzing and discussing the influence of temperature change on each parameter; by utilizing the technical means of CT scanning and SEM scanning electron microscope microscopic test, the distribution and development rule of the microcracks of the repaired sample under the influence of temperature and the change rule of the internal structure along with the temperature are analyzed and discussed from a microscopic visual angle.

The research on the sample water-rock repairing effect, the water-salt effect and the temperature effect provides data reference for selection of the reinforcing material, and the research method is the prior art and is not repeated again.

Preferably, the weight ratio of the hydraulic lime to the additive in the third step is 100: 0 to 10.

Preferably, the additive comprises one or more of fly ash, animal glue, plant polysaccharide, polypropylene fiber or methyl cellulose ether.

After the additive is added, the durability, the strength, the carbonization resistance or the adhesion of the reinforcing material can be obviously improved, and the porosity can be obviously reduced by some additives.

Detailed Description

The following is further detailed by way of specific embodiments:

the invention selects masonry materials following the ancient site wall and foundation of Syngnathus Tunes as research objects, wherein sample 1 is masonry falling in the ancient site, sample 2 is fresh rock block sample of the ancient site construction stone quarry, and hydraulic lime, fly ash, animal glue, plant polysaccharide, polypropylene fiber and n are purchased in the market.

And (3) selecting hydraulic lime as a reinforcing material, pulping with water, and then respectively acting on a sample supply sample 1 and a sample supply sample 2 to obtain a repair sample I-1 and a repair sample II-1.

Selecting hydraulic lime and fly ash as reinforcing agents, and enabling the hydraulic lime and the fly ash to act on a sample 1 to be repaired respectively after pulping with water according to the weight ratio of 100:1, 100:2, 100:3, 100:4, 100:5, 100:6, 100:7, 100:8, 100:9 and 10:1 of the hydraulic lime and the fly ash to obtain a repair sample I-2-a repair sample I-11; respectively acting on a sample 2 to be tested to obtain a repair sample II-2 to a repair sample II-11.

Selecting hydraulic lime and animal glue as reinforcing agents, pulping the hydraulic lime and the animal glue according to the weight ratio of 100:1, 100:2, 100:3, 100:4, 100:5, 100:6, 100:7, 100:8, 100:9 and 10:1 of the hydraulic lime and the animal glue, and then respectively acting on a sample 1 to be repaired to obtain a repair sample I-12-a repair sample I-21; respectively acting on a sample 2 to be tested to obtain a repair sample II-12 to a repair sample II-21.

Selecting hydraulic lime and plant polysaccharide as reinforcing agents, pulping the hydraulic lime and the plant polysaccharide according to the weight ratio of 100:1, 100:2, 100:3, 100:4, 100:5, 100:6, 100:7, 100:8, 100:9 and 10:1, and then respectively acting on a sample 1 to be repaired to obtain a repair sample I-22-a repair sample I-31; respectively acting on a sample 2 to be tested to obtain a repair sample II-22 to a repair sample II-31.

Selecting hydraulic lime and polypropylene fiber as reinforcing agents, and enabling the hydraulic lime and the polypropylene fiber to act on a sample 1 to be repaired respectively after pulping with water according to the weight ratio of 100:1, 100:2, 100:3, 100:4, 100:5, 100:6, 100:7, 100:8, 100:9 and 10:1 of the hydraulic lime and the polypropylene fiber to obtain a repair sample I-33-a repair sample I-41; respectively acting on a sample 2 to be tested to obtain a repair sample II-32 to a repair sample II-41.

Selecting hydraulic lime and methyl cellulose ether as reinforcing agents, and pulping the hydraulic lime and the methyl cellulose ether according to the weight ratio of 100:1, 100:2, 100:3, 100:4, 100:5, 100:6, 100:7, 100:8, 100:9 and 10:1 with water to act on a sample 1 to be repaired respectively to obtain a repair sample I-43-a repair sample I-51; respectively acting on a sample 2 to be tested to obtain a repair sample II-42 to a repair sample II-51.

Each sample was 10 groups.

And (3) putting the 1020 samples into a laboratory, simulating the local climate conditions of the Syngnathus Tunow for a period of time according to satellite, temperature monitoring, humidity monitoring, wind power detection and local climate environment, performing weather resistance test by combining with temperature test and freeze-thaw cycle, stopping the test when the repaired samples start to crack or even break, and when only 5-10 complete repaired samples remain after the test, wherein the remaining samples are the samples with the optimal weather resistance.

And preparing 5-10 numbered restoration samples again, and performing water-rock action research, water-salt action research and temperature action research on the newly prepared restoration samples.

The method comprises the steps of analyzing the material components of a repair sample, mainly analyzing and testing the expansibility, the soluble mineral components and the cementing material components, testing indexes such as uniaxial compressive strength, tensile strength, shear strength, elastic modulus and the like of the repair sample under the conditions of different water contents, dry-wet circulation and freeze-thaw circulation, comparing and analyzing the change rule and the internal mechanism of each parameter under different conditions, and analyzing the chemical corrosion and degradation mechanism of the repair sample by utilizing the test technical means of CT scanning, pore microscopic measurement and scanning electron microscope.

The method comprises the steps of analyzing and researching the migration rule of a salt solution in a repairing sample, wherein the migration rule comprises the migration speed, the distribution characteristics of a salt concentration area and the permeability coefficients of salt solutions with different concentrations in sandstone, analyzing the pore structure characteristics and the distribution rules of samples before and after salt crystallization by using a mercury porosimeter, observing the structure characteristics and the distribution rules of salt particles of the repairing sample before and after crystallization by using a scanning electron microscope microcosmic observation, and analyzing and clarifying the crystal expansion of the salt and the damage mechanism of masonry in the repairing sample from macroscopic and microcosmic visual angles based on a geotechnical mechanics theory and a crystal expansion theory.

The method comprises the steps of maintaining a repaired sample under different temperature conditions, testing wave velocity characteristics, compressive strength, damage form and damage characteristics of the repaired sample, and analyzing and discussing the influence of temperature change on each parameter; by utilizing the technical means of CT scanning and SEM scanning electron microscope microscopic test, the distribution and development rule of the microcracks of the repaired sample under the influence of temperature and the change rule of the internal structure along with the temperature are analyzed and discussed from a microscopic visual angle.

Based on the research data, the reinforcing material most suitable for the brick stone at the sea dragon tun ancient site is obtained according to the formula of the reinforcing material corresponding to the number of the residual repairing samples, and reference is provided for subsequent cultural relic protection.

The above description is only an embodiment of the present invention, and the common general knowledge of the known specific structures and characteristics in the solution is not described too much, and it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the structure of the present invention, and these should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.