阅读说明：本技术 一种建筑复合保温砌块 (Composite heat-insulating building block for building ) 是由 孙志远 罗艳丽 周伟伟 苗靖 王学停 于 2021-09-01 设计创作，主要内容包括：本发明公开一种建筑复合保温砌块,涉及建筑保温技术领域,包括砌块一和砌块二,所述砌块一两侧对称设置锥形槽,所述锥形槽底部设置半弧形卡槽,所述半弧形卡槽内设置圆柱体,所述砌块二两侧设置与锥形槽匹配的凸起,所述砌块一和砌块二中部两侧对称设置方孔一,中部设置方孔二,所述砌块一和砌块二上表面均设置凸块一,下表面设置与其匹配的凹槽一。通过孔型设计,大大增加热阻,另外对砌块的原材料进行优化改进,进一步增加其保温性能和强度。(The invention discloses a building composite heat-insulation building block, which relates to the technical field of building heat insulation and comprises a first building block and a second building block, wherein conical grooves are symmetrically formed in two sides of the first building block, a semi-arc-shaped clamping groove is formed in the bottom of the conical groove, a cylinder is arranged in the semi-arc-shaped clamping groove, bulges matched with the conical grooves are arranged on two sides of the second building block, square holes I are symmetrically formed in two sides of the middle of the first building block and the second building block, square holes II are formed in the middle of the first building block and the second building block, protruding blocks I are arranged on the upper surfaces of the first building block and the second building block, and grooves I matched with the protruding blocks I and the square holes II are arranged on the lower surfaces of the first building block and the second building block. Through the hole type design, the thermal resistance is greatly increased, and in addition, the raw materials of the building block are optimized and improved, so that the heat insulation performance and the strength of the building block are further increased.)

1. A building composite heat-insulating building block is characterized in that: including building block one (1) and building block two (2), building block one (1) bilateral symmetry sets up conical groove (3), conical groove (3) bottom sets up half arc draw-in groove (9), set up cylinder (6) in half arc draw-in groove (9), building block two (2) both sides set up arch (8) of matcing with conical groove (3), building block one (1) and building block two (2) middle part bilateral symmetry set up square hole one (4), and the middle part sets up square hole two (5), building block one (1) and building block two (2) upper surface all set up lug one (7), and the lower surface sets up rather than the recess one that matches.

2. The building composite heat insulation block according to claim 1, characterized in that: the heat insulation material is filled in the square hole I (4) on the building block I (1), the heat insulation material is filled in the square hole II (5) on the building block II (2), and the cylinder (6) arranged in the semi-arc-shaped clamping groove (9) is made of the heat insulation material.

3. The building composite heat insulation block according to claim 1, characterized in that: the building block I (1) and the building block II (2) are prepared from thermal insulation mortar, and the thermal insulation mortar is prepared from the following raw materials in parts by weight: 90-100 parts of Portland cement, 60-70 parts of aggregate, 10-12 parts of porous filler, 5-6 parts of reinforcing fiber, 2-3 parts of gypsum whisker, 0.5-1 part of water reducing agent and 40-45 parts of water.

4. The building composite heat insulation block according to claim 3, characterized in that: the reinforced fiber is steel fiber and straw fiber according to the weight ratio of 1: 0.5-1 by weight.

5. The building composite heat insulation block according to claim 3, characterized in that: the aggregate is waste concrete, steel slag and waste rubber particles according to the weight ratio of 2: 1: 0.5-0.8.

6. The building composite heat insulation block according to claim 3, characterized in that: the porous filler is ceramsite and vitrified micro-beads in a weight ratio of 1.5-2: 1 are mixed.

7. A process for preparing the building composite heat-insulating block of claim 3, which is characterized in that: the method comprises the following steps:

1) soaking the porous filler in water for 2 hours;

2) and (2) stirring the silicate cement and the aggregate in a stirrer for 20min, adding the reinforcing fiber, the gypsum whisker, the water reducing agent and the porous filler obtained in the step 1), continuously stirring, and injecting into a grinding tool for molding.

Technical Field

The invention relates to the technical field of building heat preservation, in particular to a composite heat preservation building block for a building.

Background

Building energy conservation is one of the aspects of relieving energy crisis and solving energy shortage in the building field, and because the energy consumption of a building wall body accounts for about 70-80% of the energy consumption of the building, the research on the building energy conservation is focused on the aspects of building wall body energy conservation, such as wall body heat preservation, energy-saving materials and the like, the existing building wall body is generally built by concrete blocks, and the design of heat preservation type retarded soil blocks is crucial to the heat preservation of the building wall body.

Jinli Hu et al published a study on block type design, production equipment, production process and construction technology of composite thermal insulation blocks in "New wall", the specification of main block type of the novel composite thermal insulation blocks is 390mm long (290 mm, 190mm matched blocks) x 310mm wide x 190mm high, and the novel composite thermal insulation blocks are compounded by 190mm wide concrete small hollow blocks, a polystyrene board thermal insulation layer with chain lock function and a concrete protection panel. The concrete hollow block is a main body of the heat-insulating block and plays a role in bearing; the concrete protection panel can protect the polyphenyl board heat insulation layer from being damaged by external ultraviolet rays, rainwater, chemical substances and the like, and the durability of the wall body is enhanced; the polystyrene board plays a role in heat preservation and is connected with the building block main body and the protection panel. The polyphenyl insulation board is characterized in that two large faces are provided with uniform dovetail groove structures, the other four small faces are provided with grooves or bosses, and when the polyphenyl insulation board is built, the grooves and the bosses are joggled, so that a cold bridge is avoided, and an excellent insulation effect is obtained. The research needs to adopt a special building block forming all-in-one machine to integrally form and prepare the building blocks, and the cost is relatively high.

Chinese patent document (application number 200620041985.3) discloses a building wall heat-insulating block, which relates to building materials, in particular to a heat-insulating block with energy-saving and heat-insulating properties, which is suitable for manufacturing an outer wall. The utility model discloses the product is the z style of calligraphy, and its casing intussuseption is filled with the insulation material pellet, the upper surface of insulation material pellet be less than insulation block's high 1-2cm, when using, still include one can partly inlay the slice heat insulating block in building block upper portion headspace, this slice heat insulating block form will satisfy its space that can partly insert insulation block top, the upper surface of slice heat insulating block and the building block bottom face direct contact of last one deck when building a wall simultaneously. The utility model has the advantages that, adopt the utility model discloses after the building block built a wall, insulation material vertically and horizontally staggered in the wall body has not only solved the heat-conduction problem of vertical mortar joint in the wall body, solves the heat conduction temperature problem of the horizontal mortar joint of wall body moreover, but this z style of calligraphy structure is inside to set up the dislocation through-hole, and its structural strength is lower.

Disclosure of Invention

In view of the above, the present invention aims to provide a composite thermal insulation block for buildings, which greatly increases thermal resistance through hole type design, and further improves the thermal insulation performance and strength by optimizing and improving the raw materials of the block.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a building composite heat insulation building block, includes building block one and building block two, a building block bilateral symmetry sets up the bell jar, the bell jar bottom sets up half arc draw-in groove, set up the cylinder in the half arc draw-in groove, two both sides of building block set up the arch that matches with the bell jar, building block one and two middle part bilateral symmetry of building block set up square hole one, and the middle part sets up square hole two, building block one and two upper surfaces of building block all set up lug one, and the lower surface sets up rather than the recess one that matches.

Further, the first square hole on the first building block is filled with a heat insulation material, the second square hole on the second building block is filled with a heat insulation material, and the cylinder arranged in the semi-arc-shaped clamping groove is made of the heat insulation material.

Further, the first building block and the second building block are prepared from heat-insulating mortar, and the heat-insulating mortar is prepared from the following raw materials in parts by weight: 90-100 parts of Portland cement, 60-70 parts of aggregate, 10-12 parts of porous filler, 5-6 parts of reinforcing fiber, 2-3 parts of gypsum whisker, 0.5-1 part of water reducing agent and 40-45 parts of water.

Further, the reinforced fiber is steel fiber and straw fiber according to the weight ratio of 1: 0.5-1 by weight.

Further, the aggregate is waste concrete, steel slag and waste rubber particles according to a weight ratio of 2: 1: 0.5-0.8.

Further, the particle size of the waste rubber particles is 3-8mm, and the weight ratio of the particle size of the waste concrete to the particle size of the steel slag is 1-5mm to 5-15mm, namely 1: 2.

further, the aggregate is pretreated, and the concrete pretreatment steps are as follows:

1) after being crushed, the waste concrete and the steel slag are respectively placed in 2-3 times of lime water with the weight of 2-3wt% and stirred for 2 hours, and the waste rubber particles are placed in 2-3 times of lime water with the weight of 4-5wt% and stirred for 2 hours;

2) further soaking the waste concrete and steel slag in the step 1) in 2-3 times of 2wt% sodium silicate solution for 2 hours, and simultaneously soaking the waste rubber particles in the step 1) in 2 times of 4-5wt% sorbitan monopalmitate solution for stirring for 1.5-2 hours;

3) the processed waste rubber particles, waste concrete and steel slag are dried and then are screened and mixed to form the recycled aggregate.

Further, the porous filler is ceramsite and vitrified micro-beads, and the weight ratio of the ceramsite to the vitrified micro-beads is 1.5-2: 1 are mixed.

A preparation process of a composite heat-insulation building block for a building comprises the following steps:

1) soaking the porous filler in water for 2 hours;

2) and (2) stirring the silicate cement and the aggregate in a stirrer for 20min, adding the reinforcing fiber, the gypsum whisker, the water reducing agent and the porous filler obtained in the step 1), continuously stirring, and injecting into a grinding tool for molding.

The invention has the beneficial effects that:

1. the invention discloses a composite heat-insulating building block for a building, which can be used as a non-bearing wall body of the building, and has the specific structure that the building block comprises a first building block and a second building block which are spliced, wherein tapered grooves are symmetrically arranged at two sides of the first building block, a semi-arc-shaped clamping groove is arranged at the bottom of each tapered groove, a heat-insulating material with a cylindrical structure is filled in each tapered groove, the heat-insulating material is polystyrene foam plastic, a square hole II is arranged in the middle of each tapered groove, the heat-insulating material is filled in the square hole I on the first building block, the heat-insulating material is filled in the square hole II on the second building block, a staggered structure is formed, the wall body is not communicated in the transverse direction, and the heat resistance can be greatly increased. In addition, polystyrene foam plastics with a cylindrical structure are arranged at the splicing position of the first building block and the second building block, so that a vertical 'broken bridge' is formed at the splicing position, and the thermal resistance is greatly increased.

The upper surfaces of the first building blocks and the second building blocks are provided with the first bumps, the lower surfaces of the first building blocks and the second building blocks are provided with the first grooves matched with the first bumps, the first grooves are used for paving the upper building blocks and the lower building blocks, the connection mode is simple, and the stability is good.

2. In order to further increase the heat preservation performance of the building composite heat preservation building block, the building composite heat preservation building block is prepared from heat preservation mortar, wherein aggregate, porous filler, reinforcing fiber and gypsum whisker are added, the aggregate is recycled aggregate, specifically waste concrete, steel slag and waste rubber particles, the waste recycling can be realized, the cost can be greatly reduced, and the building composite heat preservation building block is energy-saving and environment-friendly; and moreover, the waste concrete and the steel slag have high density, and are used as strength frameworks, waste rubber particles are added, and the waste rubber particles and the reinforcing fibers form flexible frameworks, so that the problems of concrete cracks, shrinkage and the like can be reduced, and the flexibility and the strength are improved.

3. The steel slag is from smelting waste of a steel mill, the steel slag is open-hearth steel slag, the mineral composition of the open-hearth steel slag comprises dicalcium silicate, tricalcium silicate, dicalcium ferrite and the like, and the chemical components mainly comprise silicon oxide, calcium oxide, magnesium oxide and the like; the waste concrete is the building concrete waste which is similar to steel slag in chemical composition. Because the waste concrete and the steel slag have impurities such as soil slag, sand grains and the like on the surfaces, and have more sharp corners, irregular shapes, easy crushing and low strength, the application pretreats the waste concrete, and the crushed waste concrete and the steel slag are placed into lime water to be soaked and simultaneously stirred by a powerful machine, so that the impurities on the surfaces of the waste concrete are cleaned, the edges and corners are ground in the mutual collision process, and the surface groups of the waste concrete and the steel slag are broken under the action of-OH in an alkaline environment, so that the bonding performance with cement can be enhanced. Further soaking in sodium silicate solution to further dissociate the glass structure on the surface of the steel slag and the waste set retarding soil, thereby further enhancing the strength and the adhesive property.

In addition, the waste rubber particles have small density and hydrophobicity, so the waste rubber particles are easy to gather and float in concrete; therefore, the surface of the material is soaked in lime water to be etched, the surface roughness of the material is improved, and in addition, -OH is introduced into the surface of the material to increase the water absorption performance of the material; then the water-absorbing agent is continuously soaked in the sorbitan monopalmitate solution, and hydrophilic elements are introduced to the surface of the water-absorbing agent, so that the water-absorbing performance of the water-absorbing agent is greatly improved, and the bonding performance of the water-absorbing agent and cement is improved.

4. The reinforced fiber is formed by compounding steel fiber and straw fiber, wherein the steel fiber can greatly improve the strength and the impact resistance of concrete, meanwhile, the straw fiber is added, the flexibility of the straw fiber can be enhanced on one hand, and on the other hand, the straw fiber has certain water absorption performance, so that the mixing performance of raw materials can be increased in the mixing process, and the water can be slowly released in the cement hydration process, thereby improving the gel effect of the concrete and further increasing the strength.

5. The porous filler is a mixture of the ceramsite and the vitrified micro bubbles, and the porous filler plays a role of aggregate on one hand, and can introduce a large number of closed small air holes into concrete due to the fact that the inside of the ceramsite and the vitrified micro bubbles are loose porous structures on the other hand, so that the heat insulation performance of the concrete is improved. In addition, the ceramsite and the vitrified micro bubbles are soaked in water for 1-2h before use, so that the floating problem in the process of mixing with cement is reduced. And a small amount of gypsum whiskers is added, wherein the length of the gypsum whiskers is 40-50 mu m, the length-diameter ratio is 80-100, and hydration products of the gypsum whiskers are in a fibrous or flaky structure and can enhance the shock-resistant load.

Drawings

FIG. 1 is a schematic structural diagram of a first block of the present invention;

FIG. 2 is a schematic structural view of a second block of the present invention;

FIG. 3 is a schematic diagram of a laying structure of a first building block and a second building block;

wherein: 1-building block I, 2-building block II, 3-tapered groove, 4-square hole I, 5-square hole II, 6-cylinder, 7-lug I, 8-bulge and 9-semi-arc clamping groove.

Detailed Description

The invention is further described below with reference to the figures and examples.

Example 1

As shown in figures 1 and 2, the building composite heat-insulation building block comprises a first building block 1 and a second building block 2, wherein tapered grooves 3 are symmetrically formed in two sides of the first building block 1, a semi-arc-shaped clamping groove 9 is formed in the bottom of each tapered groove 3, a cylinder 6 is arranged in each semi-arc-shaped clamping groove 9, and protrusions 8 matched with the tapered grooves 3 are arranged on two sides of the second building block 2.

Square holes I4 are symmetrically formed in the two sides of the middle parts of the building block I1 and the building block II 2, and square holes II 5 are formed in the middle parts of the building block I and the building block II; the heat insulation material is filled in the first square hole 4 on the first building block 1, the second square hole 5 on the second building block 2 is filled with the heat insulation material, the cylinder 6 arranged in the semi-arc-shaped clamping groove 9 is made of the heat insulation material, the heat insulation material in the application is polystyrene foam plastic, the first building block and the second building block are paved in a structural schematic diagram, the structural schematic diagram is shown in figure 3, the polystyrene foam plastic transversely forms a staggered structure, and therefore the wall is not transversely communicated, and the heat resistance can be greatly increased. In addition, the cylinder is made of polystyrene foam plastic, so that a 'broken bridge' is formed at the vertical splicing part, and the thermal resistance is greatly increased; in addition, the square hole II 5 on the building block I1 and the square hole I4 on the building block II 2 are of hollow structures, so that an air layer is formed, the thermal resistance can be increased, the weight of the building block can be reduced, and the building block is convenient to construct.

The upper surfaces of the first building block 1 and the second building block 2 are provided with the first bumps 7, the lower surfaces of the first building block 1 and the second building block 2 are provided with the first grooves matched with the first bumps, the first building block 1 and the second building block 2 are paved up and down correspondingly through the structure, and stability is good.

The building block I1 and the building block II 2 are prepared from thermal insulation mortar, wherein the thermal insulation mortar is prepared from the following raw materials in parts by weight: 42.5 parts of Portland cement, 60 parts of aggregate, 10 parts of porous filler, 5 parts of reinforcing fiber, 2 parts of gypsum whisker, 0.5 part of polycarboxylic acid water reducing agent and 40 parts of water.

The reinforced fiber is steel fiber and straw fiber according to the weight ratio of 1: 0.5, wherein the diameter of the steel fiber is 5-20 μm, the length is 2-3mm, the straw fiber is chopped fiber obtained by crushing corn straw, the length is 3-4cm, and the width is 0.5-1 cm.

The aggregate is waste concrete, steel slag and waste rubber particles according to the weight ratio of 2: 1: 0.5 mixing; wherein the particle size of the waste rubber particles is 3-8mm, and the particle size grading of the waste concrete and the steel slag is that the weight ratio of the particle size of 1-5mm to the particle size of 5-15mm is 1: 2.

the aggregate is pretreated before use, and the concrete pretreatment steps are as follows:

1) after being crushed, the waste concrete and the steel slag are respectively placed in 2 times of 2wt% of lime water and stirred for 2 hours, and the waste rubber particles are placed in 2 times of 4wt% of lime water and stirred for 2 hours;

2) filtering the waste concrete and steel slag in the step 1), further soaking the waste concrete and steel slag in 2 times of 2wt% sodium silicate solution for 2 hours, filtering the filtrate of the waste rubber particles in the step 1), further soaking the waste rubber particles in 2 times of 4wt% sorbitan monopalmitate solution, and stirring for 1.5-2 hours;

3) the processed waste rubber particles, waste concrete and steel slag are dried and then are screened and mixed to form the recycled aggregate.

The porous filler is ceramsite and vitrified micro bubbles according to the weight ratio of 1.5: 1, the vitrified micro bubbles have the grain diameter of 0.5 to 1.5mm, and the ceramsite has the grain diameter of 5 to 10 mm.

A preparation process of a composite heat-insulation building block for a building comprises the following steps:

1) soaking the porous filler in water for 2 hours;

2) stirring the silicate cement and the aggregate in a stirrer for 20min, adding the reinforcing fiber, the gypsum whisker, the water reducing agent and the porous filler in the step 1), and continuously stirring;

3) placing the polystyrene foam plastic plate and the polystyrene foam plastic cylinder at corresponding positions in a grinding tool, then uniformly injecting heat-insulating mortar, and demolding and curing to obtain the polystyrene foam plastic plate with the appearance size of 390 x 280 x 190 mm.

Example 2

Example 2 differs from example 1 in that:

the building block I1 and the building block II 2 are prepared from thermal insulation mortar, wherein the thermal insulation mortar is prepared from the following raw materials in parts by weight: 95 parts of 42.5 Portland cement, 64 parts of aggregate, 11 parts of porous filler, 5.4 parts of reinforcing fiber, 2.2 parts of gypsum whisker, 0.6 part of polycarboxylic acid water reducing agent and 42 parts of water.

The reinforced fiber is steel fiber and straw fiber according to the weight ratio of 1: 0.6, wherein the diameter of the steel fiber is 5-20 μm, the length is 2-3mm, the straw fiber is chopped fiber obtained by crushing corn straw, the length is 3-4cm, and the width is 0.5-1 cm.

The aggregate is waste concrete, steel slag and waste rubber particles according to the weight ratio of 2: 1: 0.6, and mixing.

The aggregate is pretreated before use, and the concrete pretreatment steps are as follows:

1) after being crushed, the waste concrete and the steel slag are respectively placed in 2.5 times of 2.5wt% lime water and stirred for 2 hours, and the waste rubber particles are placed in 2.5 times of 4.5wt% lime water and stirred for 2 hours;

2) further soaking the waste concrete and steel slag in the step 1) in 2.5 times of 2wt% sodium silicate solution for 2 hours, and simultaneously soaking the waste rubber particles in the step 1) in 2 times of 4.5wt% sorbitan monopalmitate solution and stirring for 1.5-2 hours;

3) the processed waste rubber particles, waste concrete and steel slag are dried and then are screened and mixed to form the recycled aggregate.

The porous filler is ceramsite and vitrified micro bubbles according to the weight ratio of 1.6: 1 are mixed.

Example 3

Example 3 differs from example 1 in that:

the building block I1 and the building block II 2 are prepared from thermal insulation mortar, wherein the thermal insulation mortar is prepared from the following raw materials in parts by weight: 98 parts of 42.5 Portland cement, 68 parts of aggregate, 11.5 parts of porous filler, 5.8 parts of reinforcing fiber, 2.5 parts of gypsum whisker, 0.8 part of polycarboxylic acid water reducing agent and 44 parts of water.

The reinforced fiber is steel fiber and straw fiber according to the weight ratio of 1: 0.8, wherein the diameter of the steel fiber is 5-20 μm, the length is 2-3mm, the straw fiber is chopped fiber obtained by crushing corn straw, the length is 3-4cm, and the width is 0.5-1 cm.

The aggregate is waste concrete, steel slag and waste rubber particles according to the weight ratio of 2: 1: 0.7, and mixing.

The aggregate is pretreated before use, and the concrete pretreatment steps are as follows:

1) after being crushed, the waste concrete and the steel slag are respectively placed in 2.5 times of 2.5wt% of lime water and stirred for 2 hours, and the waste rubber particles are placed in 2-3 times of 5wt% of lime water and stirred for 2 hours;

2) further soaking the waste concrete and steel slag in the step 1) in 3 times of a sodium silicate solution with the weight of 2wt% for 2 hours, and simultaneously soaking the waste rubber particles in the step 1) in a sorbitan monopalmitate solution with the weight of 2 times of the weight of 4.5wt% and stirring for 1.5-2 hours;

3) the processed waste rubber particles, waste concrete and steel slag are dried and then are screened and mixed to form the recycled aggregate.

The porous filler is ceramsite and vitrified micro bubbles according to the weight ratio of 1.8: 1, the vitrified micro bubbles have the grain diameter of 0.5 to 1.5mm, and the ceramsite has the grain diameter of 5 to 10 mm.

Example 4

Example 4 differs from example 1 in that:

the building block I1 and the building block II 2 are prepared from thermal insulation mortar, wherein the thermal insulation mortar is prepared from the following raw materials in parts by weight: 42.5 parts of Portland cement, 70 parts of aggregate, 12 parts of porous filler, 6 parts of reinforcing fiber, 3 parts of gypsum whisker, 1 part of polycarboxylic acid water reducing agent and 45 parts of water.

The reinforced fiber is steel fiber and straw fiber according to the weight ratio of 1: 1 are mixed.

The aggregate is waste concrete, steel slag and waste rubber particles according to the weight ratio of 2: 1: 0.8, and mixing.

The aggregate is pretreated before use, and the concrete pretreatment steps are as follows:

1) after being crushed, the waste concrete and the steel slag are respectively placed in 3 times of 3wt% of lime water and stirred for 2 hours, and the waste rubber particles are placed in 3 times of 5wt% of lime water and stirred for 2 hours;

2) further soaking the waste concrete and steel slag in the step 1) in 3 times of a sodium silicate solution with the weight of 2wt% for 2 hours, and simultaneously soaking the waste rubber particles in the step 1) in a sorbitan monopalmitate solution with the weight of 2 times of the weight of 5wt% and stirring for 1.5-2 hours;

3) the processed waste rubber particles, waste concrete and steel slag are dried and then are screened and mixed to form the recycled aggregate.

The porous filler is ceramsite and vitrified micro bubbles according to the weight ratio of 2: 1, the vitrified micro bubbles have the grain diameter of 0.5 to 1.5mm, and the ceramsite has the grain diameter of 5 to 10 mm.

Comparative example 1

Comparative example 1 differs from example 4 in that: the aggregate was not pretreated prior to use and the other procedures were the same as in example 4.

Comparative example 2

Comparative example 2 differs from example 4 in that: the waste rubber particles in the aggregate are replaced by steel slag, and other processes are the same as those in the example 4.

Performance detection

The heat preservation mortar in the examples 1 to 4 and the comparative examples 1 to 2 is prepared into a concrete test piece of 100mm multiplied by 100mm, and a compression strength test of 28d is carried out by using a compression testing machine; the heat conductivity coefficient adopts JTRG-III type building heat flow meter type heat conductivity instrument; the 28d dry apparent density of the test piece was tested according to the drying method in JGJ 51-2002 technical Specification for lightweight aggregate concrete, and the test results are shown in Table 1.

TABLE 1 Performance test results

As shown in the detection results in Table 1, although the thermal insulation mortar adopts a large amount of waste, the compressive strength of the thermal insulation mortar is 23.1-25.4MPa, the thermal conductivity is 0.182-0.201W/(m.k), the strength is high, other thermal resistances are high, the thermal insulation effect of the composite thermal insulation building block of the building can be greatly enhanced, and the thermal insulation mortar is energy-saving and environment-friendly.

According to the experimental data of the comparative examples 1-2, the aggregate is not pretreated before use, and the compressive strength of the aggregate is obviously reduced; the waste rubber particles in the aggregate are replaced by the steel slag, so that the influence on the heat conductivity coefficient is small, but the compressive strength of the waste rubber particles also has a certain influence, and the waste concrete, the steel slag and the waste rubber particles have a certain synergistic enhancement effect.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.