A non-shrinkage high-strength roadbed reinforcement material

Abstract

The present invention is applicable to the technical field of roadbed reinforcement materials, and provides a non-shrinkage high-strength roadbed reinforcement material, which includes the following components and mass fractions: 35-55 parts of cement, 3-7 parts of calcium chloride, 9-15 parts of blast furnace slag powder, 1.5-4 parts of water reducer, 1.2-1.6 parts of soybean gum, 1-3 parts of expansion agent, 3-9 parts of glass fiber / metal oxide composite, 2-4 parts of curing agent; preferably, the glass fiber / metal oxide composite is one or more of glass fiber / Al2O3, glass fiber / TiO2, and glass fiber / SiO2; preferably, the water reducer is one or more of naphthalene water reducer, polycarboxylic acid water reducer, and silicate water reducer; preferably, the expansion agent is one or more of bentonite, montmorillonite, and calcium sulfate. The material prepared by the present invention has high strength and good shrinkage resistance, which greatly improves the reinforcement effect and service life of the roadbed reinforcement material.

Description

Technical Field

[0001] The invention relates to the technical field of roadbed reinforcement materials, in particular to a non-shrinkage high-strength roadbed reinforcement material. Background Art

[0002] Roadbed reinforcement materials refer to various materials used to enhance the strength and stability of the roadbed of infrastructure such as roads and railways and to improve their bearing capacity. The purpose of roadbed reinforcement is to prevent settlement, landslides, deformation and other problems and ensure the safety and durability of transportation facilities.

[0003] However, most traditional roadbed reinforcement materials have some problems, such as large shrinkage and insufficient strength, which limit their application in actual engineering. Among them, the large shrinkage of roadbed reinforcement materials refers to the large change in volume of the material when it is dry or the temperature changes, especially the phenomenon of shrinkage. Roadbed reinforcement materials with large shrinkage may cause a series of problems during use, such as cracks, uneven settlement, and reduced bearing capacity. These problems not only affect the stability and durability of the roadbed, but may also increase the cost of maintenance and repair. However, the low strength of roadbed reinforcement materials will have a series of adverse effects on the stability, bearing capacity, service life and safety of the roadbed, which may cause road deformation, settlement, cracks and other problems, increase maintenance costs, and pose a threat to traffic safety.

[0004] In view of the above problems, the present invention proposes a non-shrinkage high-strength roadbed reinforcement material. Summary of the invention

[0005] The purpose of the present invention is to provide a non-shrinkage high-strength roadbed reinforcement material to solve some problems that most roadbed reinforcement materials in the prior art have, such as large shrinkage and insufficient strength, which limits their application in actual engineering.

[0006] To achieve the above object, the present invention provides the following technical solution: a non-shrinkage high-strength roadbed reinforcement material, the roadbed reinforcement material comprising the following components and mass fractions:

[0007] 35-55 parts of cement, 3-7 parts of calcium chloride, 9-15 parts of blast furnace slag powder, 1.5-4 parts of water reducing agent, 1.2-1.6 parts of soybean gum, 1-3 parts of expansion agent, 3-9 parts of glass fiber / metal oxide composite, and 2-4 parts of curing agent.

[0008] Preferably, the roadbed reinforcement material further comprises chitosan and plant tannin, with the mass fractions of chitosan being 0.3 to 0.4 parts and plant tannin being 0.6 to 0.8 parts.

[0009] Preferably, the mass ratio of the soybean gum, chitosan and plant tannin is 4:1:2.

[0010] Preferably, the glass fiber / metal oxide composite is glass fiber / Al 2 O 3 , Glass fiber / TiO 2 , Glass fiber / SiO 2 One or more of .

[0011] Preferably, the water reducer is one or more of a naphthalene-based water reducer, a polycarboxylic acid water reducer, and a silicate water reducer.

[0012] Preferably, the swelling agent is one or more of bentonite, montmorillonite and calcium sulfate.

[0013] Preferably, the curing agent is one or more of quicklime, zeolite, and polyvinyl alcohol.

[0014] Preferably, the cement is one or more of P.O42.5 and P.O52.5.

[0015] The present invention has at least the following beneficial effects:

[0016] The invention provides a non-shrinkage high-strength roadbed reinforcement material. The prepared material has high strength and good anti-shrinkage performance, which greatly improves the reinforcement effect and service life of the roadbed reinforcement material. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example 1

[0019] The present invention provides a non-shrinkage high-strength roadbed reinforcement material, comprising the following components and mass fractions:

[0020] 35 parts of cement, 3 parts of calcium chloride, 9 parts of blast furnace slag powder, 1.5 parts of water reducing agent, 1.2 parts of soybean gum, 1 part of expansion agent, 3 parts of glass fiber / metal oxide composite, and 2 parts of curing agent.

[0021] Among them, the glass fiber / metal oxide composite is glass fiber / Al 2 O 3 .

[0022] Among them, the water reducer is a naphthalene-based water reducer; the expansion agent is bentonite; and the curing agent is quicklime.

[0023] Among them, cement is P.O42.5.

[0024] Example 2

[0025] The present invention provides a non-shrinkage high-strength roadbed reinforcement material, comprising the following components and mass fractions:

[0026] 45 parts of cement, 5 parts of calcium chloride, 12 parts of blast furnace slag powder, 2.5 parts of water reducing agent, 1.4 parts of soybean gum, 2 parts of expansion agent, 7 parts of glass fiber / metal oxide composite, and 3 parts of curing agent.

[0027] Among them, the glass fiber / metal oxide composite is glass fiber / TiO 2 .

[0028] Among them, the water reducing agent is polycarboxylic acid water reducing agent; the expanding agent is montmorillonite; and the curing agent is zeolite.

[0029] Among them, cement is P.O52.5.

[0030] Example 3

[0031] The present invention provides a non-shrinkage high-strength roadbed reinforcement material, comprising the following components and mass fractions:

[0032] 55 parts of cement, 7 parts of calcium chloride, 15 parts of blast furnace slag powder, 4 parts of water reducing agent, 1.6 parts of soybean gum, 3 parts of expansion agent, 9 parts of glass fiber / metal oxide composite, and 4 parts of curing agent.

[0033] Among them, the glass fiber / metal oxide composite is glass fiber / SiO 2 .

[0034] Among them, the water reducing agent is a silicate water reducing agent; the expansion agent is calcium sulfate; and the curing agent is polyvinyl alcohol.

[0035] Among them, the cement is a mixture of P.O42.5 and P.O52.5, and the mixing ratio of P.O42.5 and P.O52.5 is 2:1.

[0036] Example 4

[0037] The present invention provides a non-shrinkage high-strength roadbed reinforcement material, comprising the following components and mass fractions:

[0038] 35 parts of cement, 3 parts of calcium chloride, 9 parts of blast furnace slag powder, 1.5 parts of water reducing agent, 1.2 parts of soybean gum, 1 part of expansion agent, 3 parts of glass fiber / metal oxide composite, 2 parts of curing agent, 0.3 parts of chitosan and 0.6 parts of vegetable tannin.

[0039] Among them, the mass ratio of soybean gum, chitosan and plant tannin is 4:1:2.

[0040] Among them, the glass fiber / metal oxide composite is glass fiber / Al2 O 3 .

[0041] Among them, the water reducer is a naphthalene-based water reducer; the expansion agent is bentonite; and the curing agent is quicklime.

[0042] Among them, cement is P.O42.5.

[0043] Example 5

[0044] The present invention provides a non-shrinkage high-strength roadbed reinforcement material, comprising the following components and mass fractions:

[0045] 45 parts of cement, 5 parts of calcium chloride, 12 parts of blast furnace slag powder, 2.5 parts of water reducing agent, 1.4 parts of soybean gum, 2 parts of expansion agent, 7 parts of glass fiber / metal oxide composite, 3 parts of curing agent, 0.35 parts of chitosan and 0.7 parts of vegetable tannin.

[0046] Among them, the mass ratio of soybean gum, chitosan and plant tannin is 4:1:2.

[0047] Among them, the glass fiber / metal oxide composite is glass fiber / TiO 2 .

[0048] Among them, the water reducing agent is polycarboxylic acid water reducing agent; the expanding agent is montmorillonite; and the curing agent is zeolite.

[0049] Among them, cement is P.O52.5.

[0050] Example 6

[0051] The present invention provides a non-shrinkage high-strength roadbed reinforcement material, comprising the following components and mass fractions:

[0052] 55 parts of cement, 7 parts of calcium chloride, 15 parts of blast furnace slag powder, 4 parts of water reducing agent, 1.6 parts of soybean gum, 3 parts of expansion agent, 9 parts of glass fiber / metal oxide composite, 4 parts of curing agent, 0.4 parts of chitosan and 0.8 parts of vegetable tannin.

[0053] Among them, the mass ratio of soybean gum, chitosan and plant tannin is 4:1:2.

[0054] Among them, the glass fiber / metal oxide composite is glass fiber / SiO 2 .

[0055] Among them, the water reducing agent is a silicate water reducing agent; the expansion agent is calcium sulfate; and the curing agent is polyvinyl alcohol.

[0056] Among them, the cement is a mixture of P.O42.5 and P.O52.5, and the mixing ratio of P.O42.5 and P.O52.5 is 2:1.

[0057] The functions of each component in the present invention are as follows:

[0058] Cement, as the main cementitious material, is responsible for providing strength and durability of roadbed reinforcement materials; calcium chloride, as an early strength agent, can accelerate the hydration reaction of cement, thereby shortening the curing time of the material; blast furnace slag powder, as an active mixed material, can improve the density and impermeability of the material; water reducer is used to reduce the amount of water used and improve the fluidity of the material while maintaining or improving its strength; soybean gum, as a natural polymer material, can enhance the adhesion and crack resistance of the material; expansion agent is used to compensate for the shrinkage that may occur in the material during the curing process to ensure the stability of the roadbed; glass fiber / metal oxide composites, as reinforcing materials, can significantly improve the tensile strength and flexural strength of roadbed reinforcement materials; curing agent is used to promote the curing process of the material and improve its early and final strength; chitosan and plant tannins, as natural thickeners and stabilizers, can improve the construction performance and long-term stability of the material.

[0059] Through the synergy of the above components, the roadbed reinforcement material prepared can effectively solve the problems of shrinkage and insufficient strength of traditional materials, thereby showing excellent performance in practical engineering applications.

[0060] For the roadbed reinforcement materials prepared in the above Examples 1-6,

[0061] Experimental Project unit result Compressive strength MPa ≥55.4 Flexural strength MPa ≥16.2 Shrinkage (28d) ％ ＜0.001 Initial setting time h ≤5.9 Final setting time h ≤16.5

[0062] In summary, the roadbed reinforcement material prepared by the present invention has high strength, low shrinkage, or even no shrinkage.

[0063] The above shows and describes the basic principles, main features and advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A non-shrinkage high-strength roadbed reinforcement material, characterized in that: The roadbed reinforcement material includes the following components and mass fractions: 35-55 parts of cement, 3-7 parts of calcium chloride, 9-15 parts of blast furnace slag powder, 1.5-4 parts of water reducing agent, 1.2-1.6 parts of soybean gum, 1-3 parts of expansion agent, 3-9 parts of glass fiber / metal oxide composite, and 2-4 parts of curing agent.

2. The non-shrinkage high-strength roadbed reinforcement material according to claim 1, characterized in that: The roadbed reinforcement material also includes chitosan and plant tannin, with the mass proportions of chitosan being 0.3 to 0.4 parts and plant tannin being 0.6 to 0.8 parts.

3. The non-shrinkage high-strength roadbed reinforcement material according to claim 2, characterized in that: The mass ratio of the soybean gum, chitosan and plant tannin is 4:1:

2.

4. The non-shrinkage high-strength roadbed reinforcement material according to claim 1, characterized in that: The glass fiber / metal oxide composite is one or more of glass fiber / Al2O3, glass fiber / TiO2, and glass fiber / SiO2.

5. The non-shrinkage high-strength roadbed reinforcement material according to claim 1, characterized in that: The water reducer is one or more of a naphthalene water reducer, a polycarboxylic acid water reducer, and a silicate water reducer.

6. The non-shrinkage high-strength roadbed reinforcement material according to claim 1, characterized in that: The swelling agent is one or more of bentonite, montmorillonite and calcium sulfate.

7. The non-shrinkage high-strength roadbed reinforcement material according to claim 1, characterized in that: The curing agent is one or more of quicklime, zeolite and polyvinyl alcohol.

8. The non-shrinkage high-strength roadbed reinforcement material according to claim 1, characterized in that: The cement is one or more of P.O42.5 and P.O52.5.