阅读说明：本技术 一种基于废弃玻璃集料的抗冲磨廊道超高性能混凝土及其制备方法 (Anti-scouring gallery ultra-high performance concrete based on waste glass aggregate and preparation method thereof ) 是由 童奇峰 张高展 谢红 周志金 王德成 冯童 潘佳 丁庆军 李进辉 于 2021-01-07 设计创作，主要内容包括：本发明属于建筑材料技术领域,尤其涉及一种基于废弃玻璃集料的抗冲磨廊道超高性能混凝土及其制备方法。本发明提供的超高性能混凝土具有极佳的抗冲磨性能、优异的工作性能、超高强度、良好体积稳定性、较好的抗裂能力等特点,提高了混凝土结构的耐久性能,将大大提高建筑物的使用寿命,进而解决大体积混凝土控裂要求高难度大、外观质量要求高、汛期时含砂石水流冲磨破坏等技术难题,具有重要的实际应用价值。制备方法和施工工艺简单,容易操作,具有实际推广价值。(The invention belongs to the technical field of building materials, and particularly relates to anti-abrasion gallery ultra-high performance concrete based on waste glass aggregate and a preparation method thereof. The ultra-high performance concrete provided by the invention has the characteristics of excellent anti-abrasion performance, excellent working performance, ultra-high strength, good volume stability, better anti-cracking capability and the like, improves the durability of a concrete structure, greatly prolongs the service life of a building, further solves the technical problems of high difficulty of crack control requirement of large-volume concrete, high appearance quality requirement, sand-containing water flow abrasion damage in a flood season and the like, and has important practical application value. The preparation method and the construction process are simple, the operation is easy, and the method has practical popularization value.)

1. The anti-abrasion gallery ultra-high performance concrete based on the waste glass aggregate is characterized by comprising the following components in parts by weight:

2. the ultra-high performance concrete of the anti-abrasion gallery based on the waste glass aggregate of claim 1, which is characterized in that: the particle size of the waste glass aggregate is less than 1.5mm, and the apparent density is 2450kg/m³。

3. The ultra-high performance concrete of the anti-abrasion gallery based on the waste glass aggregate of claim 1, which is characterized in that: the cement is P.O 52.5.5 ordinary portland cement.

4. The ultra-high performance concrete of the anti-abrasion gallery based on the waste glass aggregate of claim 1, which is characterized in that: the specific surface area of the silica fume is more than or equal to 18000m²/kg，SiO₂The content is more than or equal to 90 percent.

5. The ultra-high performance concrete of the anti-abrasion gallery based on the waste glass aggregate of claim 1, which is characterized in that: the density of the fly ash sinking bead is 2.5g/cm³Bulk density 0.7kg/m³。

6. The ultra-high performance concrete of the anti-abrasion gallery based on the waste glass aggregate of claim 1, which is characterized in that: the steel fiber is copper-plated steel fiber, the diameter is 0.25mm, the length is 13mm, and the compressive strength is more than or equal to 2850 MPa.

7. The ultra-high performance concrete of the anti-abrasion gallery based on the waste glass aggregate of claim 1, which is characterized in that: the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent, and the effective water reducing rate is 40-60%.

8. The ultra-high performance concrete of the anti-abrasion gallery based on the waste glass aggregate of claim 1, which is characterized in that: the expanding agent is CaO type expanding agent.

9. The ultra-high performance concrete of the anti-abrasion gallery based on the waste glass aggregate of claim 1, which is characterized in that: the cementing material is cement, silica fume and fly ash, and the mass ratio of the cementing material to the fly ash is 1: 0.20-0.28: 0.10 to 0.24.

10. The method for preparing the ultra-high performance concrete of the anti-abrasion corridor based on the waste glass aggregate in claim 1, which comprises the following steps:

s1: pouring cement, silica fume, fly ash sinking beads, 1/3 steel fibers, waste glass aggregate and an expanding agent which are weighed according to the weight components of the formula into a concrete mixer for dry mixing for 30s, so that the cementing materials are distributed uniformly, and the anti-scouring gallery ultra-high performance concrete dry powder based on the waste glass aggregate is obtained;

s2: weighing water with corresponding weight, pouring the water into the ultrahigh-performance concrete dry powder, and stirring for 2-9 min;

s3: and (5) adding a water reducing agent and the rest 2/3 weight of steel fibers into the mixture obtained in the step S2, stirring for 6-16min to obtain the anti-erosion gallery ultra-high performance concrete, and naturally curing after molding.

Technical Field

The invention belongs to the technical field of building materials, and particularly relates to anti-abrasion gallery ultra-high performance concrete based on waste glass aggregate and a preparation method thereof.

Background

Most components of the shipping hub project belong to mass concrete, and the crack control requirement is high and the difficulty is high; in addition, the concrete member has high appearance quality requirement, and the technical problems of crack control and high appearance quality requirement of the concrete are solved. The anti-cracking problem of mass concrete is a difficult problem which is researched by countless engineering technicians for a long time and is not solved well to date.

The concrete of the shipping hub engineering gallery has a special variable cross-section structure, so that the concrete at the part is easy to form stress concentration and crack, and meanwhile, the concrete is also subjected to the risk of scouring and damage of sand-containing water flow in the flood season, and the key for solving the problems of crack resistance and scouring resistance of the concrete of the flood discharge gallery is how to solve.

In recent years, Ultra-high performance concrete (UHPC) impact-resistant and abrasion-resistant materials have attracted much attention due to their excellent mechanical and durable properties, and UHPC materials combine the advantages of silica powder, fly ash concrete and steel fiber concrete: removing coarse aggregates, optimizing aggregate gradation and improving compactness; the mechanical strength and the durability are improved by doping active powder admixtures such as silica fume, fly ash and the like; the steel fiber is added, so that the toughness, the crack resistance and various mechanical properties of the concrete are greatly improved; the high-performance additive is used, the water-cement ratio is reduced, and the working performance and the mechanical performance of the concrete are improved.

Research shows that the waste glass has very similar density with natural sandstone, and compared with the sandstone, the waste glass has higher hardness; when the particle size of the waste glass is less than 1.5mm, the brittleness is greatly improved and is basically the same as that of the sand; the concrete can be prepared using waste glass. At present, waste glass can be recycled and then crushed to be used for landscape sidewalks, added into asphalt concrete to replace aggregate to be used as a pavement material and crushed to be used for a floor tile material. Due to its high hardness and high corrosion resistance, it is possible to develop an abrasion-resistant ultra-high performance concrete. In addition, the secondary utilization of the waste glass can save resources and protect the environment.

The UHPC abrasion-resistant material has the following advantages: the mechanical property is high, so that the composite material can be widely applied to various complex water flow environments and the like, the durability of the original structure can be improved, and the service life of the original structure can be prolonged; excellent fracture toughness which is similar to the toughness of partial metal enables the whole material to have reliability under the environment of punching and grinding; good durability, almost no permeability of UHPC, almost zero permeability of sulfate and chloride ions and almost no carbonization, thus leading the water conservancy project to have excellent durability and greatly improving the service time of the hydraulic construction.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides anti-abrasion gallery ultrahigh-performance concrete based on waste glass aggregate and a preparation method thereof, and aims to solve part of problems in the prior art or at least alleviate part of problems in the prior art.

The ultra-high performance concrete provided by the invention has the characteristics of excellent anti-abrasion performance, excellent working performance, ultra-high strength, good volume stability, better anti-cracking capability and the like, improves the durability of a concrete structure, greatly prolongs the service life of a building, and further solves the technical problems of high crack control requirement and difficulty and high appearance quality requirement of large-volume concrete. The preparation method and the construction process are simple, easy to operate and have practical popularization value. The invention utilizes the theory of maximum stacking density to obtain the maximum compactness of a cement-silica fume-fly ash ternary system and the optimal gradation of waste glass aggregate, the cement is used as a base material, the silica fume is used as a thickening component, the fly ash is used as a modifier, and the steel fiber effectively improves the strength of the concrete and delays the propagation of microcracks.

The invention is realized in such a way that the anti-abrasion gallery ultra-high performance concrete based on the waste glass aggregate comprises the following components in parts by weight: 30-35 parts of cement; 6-8 parts of silica fume; 5-6 parts of coal ash sinking beads; 12-16 parts of steel fiber; 40-45 parts of waste glass aggregate; 0.5-1.5 parts of a water reducing agent; 0.1-1 part of an expanding agent; the water-glue ratio is 0.16-0.24.

Furthermore, the waste glass aggregate has a particle size of 1.5mm or less and an apparent density of 2450kg/m³。

Further, the cement is P.O 52.5.5 ordinary portland cement.

Further, the specific surface area of the silica fume is more than or equal to 18000m²/kg，SiO₂The content is more than or equal to 90 percent.

Further, the density of the precipitated beads of the fly ash is 2.5g/cm³Bulk density 0.7kg/m³。

Furthermore, the steel fiber is copper-plated steel fiber, the diameter is 0.25mm, the length is 13mm, and the compressive strength is more than or equal to 2850 MPa.

Further, the water reducing agent is a polycarboxylic acid high-efficiency water reducing agent, and the effective water reducing rate is 40-60%.

Further, the expanding agent is a CaO type expanding agent.

Further, the cementing material is cement, silica fume and fly ash, and the mass ratio of the cementing material to the maximum bulk density is 1: 0.20-0.28: 0.10 to 0.24.

The invention also provides a preparation method of the anti-abrasion gallery ultra-high performance concrete based on the waste glass aggregate, which comprises the following steps:

s1: pouring cement, silica fume, fly ash sinking beads, 1/3 steel fibers, waste glass aggregate and an expanding agent which are weighed according to the weight components of the formula into a concrete mixer for dry mixing for 30s, so that the cementing materials are distributed uniformly, and the anti-scouring gallery ultra-high performance concrete dry powder based on the waste glass aggregate is obtained;

s2: weighing water with corresponding weight, pouring the water into the ultrahigh-performance concrete dry powder, and stirring for 2-9 min;

s3: and (5) adding a water reducing agent and the rest 2/3 weight of steel fibers into the mixture obtained in the step S2, stirring for 6-16min to obtain the anti-erosion gallery ultra-high performance concrete, and naturally curing after molding.

In summary, the advantages and positive effects of the invention are:

the invention discloses an anti-scouring gallery UHPC (ultra high performance concrete) based on waste glass aggregates and a preparation technology thereof, wherein the problem that the concrete at the part is easy to form stress concentration and crack due to the special structure of the gallery concrete and the problems of scouring damage of sand-containing water flow and the like in the flood season are solved by changing the stacking density among gelled materials and introducing the waste glass aggregates with reasonable gradation into the UHPC to replace quartz sand.

Based on closest packing, the mathematical model is used as theoretical foundation support to prepare the anti-abrasion gallery UHPC with excellent working performance, low density and good volume stability, so that harmful media are prevented from invading a concrete matrix, and the performances of the concrete structure such as durability and the like are improved. The silica fume is added into the concrete as a densification component, and the silica fume plays a self filling effect, a volcanic ash effect and a pore solution chemical effect in the concrete so as to reduce the porosity of the concrete and improve the compactness, the water resistance and the impermeability of a coating; the fly ash sinking bead can improve the fluidity of fresh concrete and can generate the volcanic ash effect in the later period, thereby improving the pore structure of the concrete, reducing the shrinkage of the concrete and improving the development of the later strength of the UHPC of the anti-abrasion gallery. The invention uses the grain composition calculation to effectively improve the porosity of the concrete, thereby improving the mechanical property of the anti-abrasion gallery UHPC.

On the basis of a mathematical model, the anti-abrasion gallery UHPC disclosed by the invention improves the bulk density of a cementing material and the grading of aggregate so as to prepare the ultra-high strength (the strength grade is more than C100) with excellent working performance (pumpability) and anti-abrasion (the anti-abrasion strength is more than or equal to 150 h/(kg/m)²) And final crack impact energy is more than or equal to 120 kJ). The invention aims to provide wear-resistant gallery ultra-high performance concrete based on waste glass aggregate and a preparation method thereof, the provided ultra-high performance concrete has the characteristics of excellent wear-resistant performance, excellent working performance, ultrahigh strength, good volume stability, better crack resistance and the like, the durability of a concrete structure is improved, the service life of a building is greatly prolonged, and the technical problems of high crack control requirement, high difficulty and high appearance quality requirement of large-volume concrete are solved. The preparation method and the construction process are simple, easy to operate and low in cost, and have practical popularization and application values.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples, and the equipment and reagents used in the examples and test examples are commercially available without specific reference. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting.

Various modifications to the precise description of the invention will be readily apparent to those skilled in the art from the information contained herein without departing from the spirit and scope of the appended claims. It is to be understood that the scope of the invention is not limited to the procedures, properties, or components defined, as these embodiments, as well as others described, are intended to be merely illustrative of particular aspects of the invention. Indeed, various modifications of the embodiments of the invention which are obvious to those skilled in the art or related fields are intended to be covered by the scope of the appended claims.

For a better understanding of the invention, and not as a limitation on the scope thereof, all numbers expressing quantities, percentages, and other numerical values used in this application are to be understood as being modified in all instances by the term "about". Accordingly, unless expressly indicated otherwise, the numerical parameters set forth in the specification and attached claims are approximations that may vary depending upon the desired properties sought to be obtained. At the very least, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. In the present invention, "about" means within 10%, preferably within 5% of a given value or range.

The normal temperature in the following embodiments of the present invention refers to a natural room temperature condition in four seasons, and is not subjected to additional cooling or heating treatment, and is generally controlled at 10 to 30 ℃, preferably 15 to 25 ℃.

The invention discloses a waste glass aggregate-based anti-abrasion gallery ultra-high performance concrete and a preparation method thereof, and the concrete is shown in the following examples.

Example 1 calculation of cementitious Material mix ratios based on closest packing theory

According to the tightest packing theory, calculating the maximum packing compactness of a cement-silica fume-fly ash ternary system through an Aim-Goff model, determining the relative mass fraction of the cement-silica fume-fly ash ternary system, and calculating the maximum packing compactness according to the Aim-Goff model, wherein the maximum volume fraction phi of the pozzolanic material is_p ^*The following can be calculated by (1):

middle phi_p<Φ_p ^*Then, the packing density Φ of the system can be calculated by equation (2):

phi of 2_p>Φ_p ^*Then, the packing density Φ of the system can be calculated by equation (3):

in the formula: dp is the average particle size of the pozzolanic particles; dc is the average particle size of the cement particles; (ii) volume fraction of Φ p pozzolanic material; ε 0 is the porosity of a single material. Finally, calculating the maximum bulk density of the cement-silica fume-fly ash ternary system, namely cement, by using a model: silica fume: the mass ratio of the fly ash is 1: 0.20-0.28: 0.10 to 0.24. The silica fume is added as a densification component, and the silica fume plays a self filling effect, a volcanic ash effect and a pore solution chemical effect in the concrete to reduce the porosity of the concrete and improve the compactness, the water resistance and the permeability resistance of a coating; the fly ash sinking bead can improve the fluidity of fresh concrete and can generate the volcanic ash effect in the later period, thereby improving the pore structure of the concrete, reducing the shrinkage of the concrete and improving the development of the later strength of the UHPC of the anti-abrasion gallery.

Example 2

The anti-abrasion gallery UHPC comprises the following components in parts by weight: 32 parts of cement; 8 parts of silica fume; 6 parts of coal ash sinking beads; 14 parts of steel fiber, 42 parts of waste glass aggregate, 0.5 part of water reducing agent, 0.6 part of expanding agent, cement, silica fume and fly ash as cementing materials, wherein the mass ratio of the cementing materials to the maximum bulk density is 1: 0.25: 0.188; the water-to-glue ratio was 0.2. Wherein the used cement is P.O 52.5.5 ordinary portland cement; the silica fume used has a specific surface area of 18000m²/kg，SiO₂The content is 90 percent; the density of the used fly ash precipitated beads is 2.5g/cm³Bulk density 0.7kg/m³(ii) a The steel fiber is copper-plated steel fiber, the diameter is 0.25mm, the length is 13mm, and the compressive strength is 2850 MPa; the used waste glass aggregate has a particle size of 1.5mm or less and an apparent density of 2450kg/m³. Used in this exampleThe water meets the requirements of JGJ63 Water Standard for concrete mixing.

The preparation method comprises the following steps:

s1: the cement, the silica fume, the fly ash sinking beads, the steel fibers of 1/3, the waste glass aggregate and the expanding agent which are weighed according to the weight components of the formula are poured into a concrete mixer to be dry-mixed for 30s, so that the cementing material is uniformly distributed, and the anti-abrasion gallery UHPC dry powder is obtained.

S2: weighing water with corresponding weight, pouring the water into the ultrahigh-performance concrete dry powder, and stirring for 2 min.

S3: and (5) adding a water reducing agent and the rest 2/3 weight of steel fibers into the mixture obtained in the step S2, and stirring for 10min to obtain the anti-impact grinding gallery UHPC. The water reducing agent used in the embodiment is a purchased Jiangsu Subo polycarboxylic acid high-efficiency water reducing agent, the solid content is 50%, and the effective water reducing rate is 50%.

Example 3

The anti-abrasion gallery UHPC comprises the following components in parts by weight: 35 parts of cement; 7 parts of silica fume; 5 parts of coal ash sinking beads; 15 parts of steel fiber, 45 parts of waste glass aggregate, 1 part of water reducing agent, 0.6 part of expanding agent, cement, silica fume and fly ash as cementing materials, wherein the mass ratio of the cementing materials to the maximum bulk density is 1: 0.2: 0.143; the water-to-glue ratio was 0.18. Wherein the used cement is P.O 52.5.5 ordinary portland cement; the silica fume used has a specific surface area of 18000m²/kg，SiO₂The content is 90 percent; the density of the used fly ash precipitated beads is 2.5g/cm³Bulk density 0.7kg/m³(ii) a The steel fiber is copper-plated steel fiber, the diameter is 0.25mm, the length is 13mm, and the compressive strength is 2850 MPa; the used waste glass aggregate has a particle size of 1.5mm or less and an apparent density of 2450kg/m³. The water used in the present example all meets the requirements of JGJ63 Standard for Water for concrete mixing.

The preparation method comprises the following steps:

s1: the cement, the silica fume, the fly ash sinking beads, the steel fibers of 1/3, the waste glass aggregate and the expanding agent which are weighed according to the weight components of the formula are poured into a concrete mixer to be dry-mixed for 30s, so that the cementing material is uniformly distributed, and the anti-abrasion gallery UHPC dry powder is obtained.

S2: weighing water with corresponding weight, pouring the water into the ultrahigh-performance concrete dry powder, and stirring for 6 min.

S3: and (5) adding a water reducing agent and the rest 2/3 weight of steel fibers into the mixture obtained in the step S2, and stirring for 6min to obtain the anti-impact grinding gallery UHPC. The water reducing agent used in the embodiment is a purchased Jiangsu Subo polycarboxylic acid high-efficiency water reducing agent, the solid content is 50%, and the effective water reducing rate is 50%.

Example 4

The anti-abrasion gallery UHPC comprises the following components in parts by weight: 30 parts of cement; 6 parts of silica fume; 5 parts of coal ash sinking beads; 12 parts of steel fiber, 40 parts of waste glass aggregate, 1 part of water reducing agent, 0.5 part of expanding agent, cement, silica fume and fly ash as cementing materials, wherein the mass ratio of the cementing materials to the maximum bulk density is 1: 0.2: 0.166; the water-to-glue ratio was 0.21. Wherein the used cement is P.O 52.5.5 ordinary portland cement; the silica fume used has a specific surface area of 18000m²/kg，SiO₂The content is 90 percent; the density of the used fly ash precipitated beads is 2.5g/cm³Bulk density 0.7kg/m³(ii) a The steel fiber is copper-plated steel fiber, the diameter is 0.25mm, the length is 13mm, and the compressive strength is 2850 MPa; the used waste glass aggregate has a particle size of 1.5mm or less and an apparent density of 2450kg/m³. The water used in the present example all meets the requirements of JGJ63 Standard for Water for concrete mixing.

The preparation method comprises the following steps:

s1: the cement, the silica fume, the fly ash sinking beads, the steel fibers of 1/3, the waste glass aggregate and the expanding agent which are weighed according to the weight components of the formula are poured into a concrete mixer to be dry-mixed for 30s, so that the cementing material is uniformly distributed, and the anti-abrasion gallery UHPC dry powder is obtained.

S2: weighing water with corresponding weight, pouring the water into the ultrahigh-performance concrete dry powder, and stirring for 9 min.

S3: and (4) adding a water reducing agent and the rest 2/3 weight of steel fibers into the mixture obtained in the step S2, and stirring for 12min to obtain the anti-impact grinding gallery UHPC. The water reducing agent used in the embodiment is a purchased Jiangsu Subo polycarboxylic acid high-efficiency water reducing agent, the solid content is 50%, and the effective water reducing rate is 50%.

Example 5

The anti-abrasion gallery UHPC comprises the following components in parts by weight: 32 parts of cement; 8 parts of silica fume; 6 parts of coal ash sinking beads; 16 parts of steel fiber, 42 parts of waste glass aggregate, 1.5 parts of water reducing agent, 0.5 part of expanding agent, cement, silica fume and fly ash as cementing materials, wherein the mass ratio of the cementing materials to the cement to the silica fume to the fly ash is 1: 0.25: 0.189; the water-to-glue ratio was 0.16. Wherein the used cement is P.O 52.5.5 ordinary portland cement; the silica fume used has a specific surface area of 18000m²/kg，SiO₂The content is 90 percent; the density of the used fly ash precipitated beads is 2.5g/cm³Bulk density 0.7kg/m³(ii) a The steel fiber is copper-plated steel fiber, the diameter is 0.25mm, the length is 13mm, and the compressive strength is 2850 MPa; the used waste glass aggregate has a particle size of 1.5mm or less and an apparent density of 2450kg/m³. The water used in the present example all meets the requirements of JGJ63 Standard for Water for concrete mixing.

The preparation method comprises the following steps:

s1: the cement, the silica fume, the fly ash sinking beads, the steel fibers of 1/3, the waste glass aggregate and the expanding agent which are weighed according to the weight components of the formula are poured into a concrete mixer to be dry-mixed for 30s, so that the cementing material is uniformly distributed, and the anti-abrasion gallery UHPC dry powder is obtained.

S2: weighing water with corresponding weight, pouring the water into the ultrahigh-performance concrete dry powder, and stirring for 9 min.

S3: and (5) adding a water reducing agent and the rest 2/3 weight of steel fibers into the mixture obtained in the step S2, and stirring for 15min to obtain the anti-impact grinding gallery UHPC. The water reducing agent used in the embodiment is a purchased Jiangsu Subo polycarboxylic acid high-efficiency water reducing agent, the solid content is 50%, and the effective water reducing rate is 50%.

Example 6

The common UHPC comprises the following components in parts by weight: 32 parts of cement; 8 parts of silica fume; 6 parts of coal ash sinking beads; 16 parts of steel fiber, 39 parts of quartz sand, 1.5 parts of water reducing agent, 0.5 part of expanding agent, cement, silica fume and fly ash as cementing materials, wherein the mass ratio of the cementing materials to the maximum bulk density is 1: 0.25: 0.189; the water-to-glue ratio was 0.16. Wherein the cement used is P.O 52.5.5 common cementIntroducing portland cement; the silica fume used has a specific surface area of 18000m²/kg，SiO₂The content is 90 percent; the density of the used fly ash precipitated beads is 2.5g/cm³Bulk density 0.7kg/m³(ii) a The steel fiber is copper-plated steel fiber, the diameter is 0.25mm, the length is 13mm, and the compressive strength is 2850 MPa; the quartz sand has particle diameter of 1.5mm or less and apparent density of 2650kg/m³. The water used in the present example all meets the requirements of JGJ63 Standard for Water for concrete mixing.

The preparation method comprises the following steps:

s1: and pouring the cement, the silica fume, the fly ash settled beads, the steel fiber of 1/3, the quartz sand and the expanding agent which are weighed according to the weight components in the formula into a concrete mixer for dry mixing for 30s, so that the cementing material is distributed uniformly, and the UHPC dry powder is obtained.

S2: weighing water with corresponding weight, pouring the water into the ultrahigh-performance concrete dry powder, and stirring for 9 min.

S3: and (4) adding a water reducing agent and the rest 2/3 weight of steel fibers into the mixture obtained in the step S2, and stirring for 15min to obtain UHPC. The water reducing agent used in the embodiment is a purchased Jiangsu Subo polycarboxylic acid high-efficiency water reducing agent, the solid content is 50%, and the effective water reducing rate is 50%.

The detection method comprises the following steps: the concrete prepared in each example was subjected to the following property tests

The detection of the relevant performance is respectively carried out according to GB/T50080-2016 standard for testing the performance of common concrete mixtures, GB/T50081-2016 standard for testing the mechanical performance of common concrete, GBT 31387-2015 reactive powder concrete, SL352-2006 specification for testing hydraulic concrete, GB/T50082-2009 standard for testing the long-term performance and the durability of common concrete, and the impact resistance test by the drop hammer impact method recommended by American ACI 544.

The results are shown in the following table:

TABLE 1 results of UHPC experiments on anti-erosion galleries

In the table, Z-2, Z-3, Z-4 and Z-5 are respectively an anti-impact grinding gallery UHPC detection item prepared by the method described in the embodiment 2-5, Z-6 is a common UHPC detection item prepared by the method described in the embodiment 6, Z-6 is a common UHPC prepared by replacing waste glass aggregate with the same volume in Z-5, and as can be seen from the table 1, the anti-impact grinding gallery UHPC prepared by the invention has slump larger than 200mm, the extensibility larger than 400mm, the 28-day compressive strength larger than 120MPa, the 28-day anti-impact grinding strength larger than or equal to 150h/(kg/m2), the 28-day final crack impact power larger than or equal to 120kJ and the 56d shrinkage smaller than or equal to 400 mu m/mm. The anti-abrasion gallery UHPC prepared by the invention has excellent anti-abrasion performance, excellent working performance, ultrahigh strength and good volume stability. In addition, compared with the common UHPC, the anti-abrasion gallery UHPC has higher strength and better anti-abrasion performance. The brittle failure of the waste glass aggregate with the thickness of less than 1.5mm is greatly improved, the compressive strength of the UHPC under continuous load is reduced by using the waste glass aggregate, and the compressive strength and the impact resistance strength of the concrete have a certain positive correlation, so that the impact resistance/impact resistance of the UHPC material is reduced. On the other hand, when the UHPC anti-abrasion material is damaged and destroyed by external forces such as abrasion, impact, cavitation erosion and the like, the outermost gel material slurry layer is firstly destroyed, the waste glass aggregate is exposed, the abrasion impact stress is absorbed, the development of cracks and defects in the UHPC material is hindered under the synergistic action of the abrasion impact external force and the bridging effect of fibers, and the abrasion impact resistance of the UHPC material is improved. The incorporation of steel fibres changes the failure mode of the concrete, which changes from brittle failure to failure with certain plastic characteristics. Therefore, the prepared anti-abrasion gallery UHPC has excellent anti-abrasion performance, excellent working performance, ultrahigh strength, good volume stability, better anti-cracking capability and the like.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.