Rapid-hardening and early-strength structural reinforcement materials based on aluminate cement and steel slag

A technology of aluminate cement and reinforcement materials, which is applied in the field of building materials, can solve the problems of low comprehensive utilization rate of steel slag, land occupation, waste of resources, etc., achieve low comprehensive reinforcement cost, improve production and construction efficiency, and have high fluidity Effect

Inactive Publication Date: 2011-12-28
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Steel slag is one of the main waste slags in the iron and steel industry. The comprehensive utilization rate of steel slag in my country is small. A large amount of steel slag accumulation not only occupies land and pollutes the environment, but also is a great waste of resources.

Method used

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  • Rapid-hardening and early-strength structural reinforcement materials based on aluminate cement and steel slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Example 1, a fast-hardening and early-strength structural reinforcement material based on aluminate cement and steel slag, according to CA-50 aluminate cement 100, steel slag 100, S75 slag powder 10, fly ash 5, silica fume 5, retarder 0.002, polycarboxylic acid water reducing agent 0.05, latex powder 1, cellulose ether 0.01, defoamer 0.02, polyvinyl alcohol fiber 0.05 in weight ratio. Add water according to 10% of the total weight of the reinforcement material and stir evenly to obtain the desired product. The performance test results are shown in Table 1.

Embodiment 2

[0052] Example 2, a fast-hardening and early-strength structural reinforcement material based on aluminate cement and steel slag, according to CA-60 aluminate cement 100, steel slag 400, S95 slag powder 45, fly ash 35, silica fume 15, and retarder 0.010, naphthalene water reducer 3.00, latex powder 4, cellulose ether 0.15, defoamer 0.15, polyvinyl alcohol fiber 0.80 in weight ratio. Add water at 15% of the total weight of the reinforcing material and stir evenly to obtain the desired product. The performance test results are shown in Table 1.

Embodiment 3

[0053] Example 3, fast-hardening and early-strength structural reinforcement material based on aluminate cement and steel slag, according to CA-70 aluminate cement 100, steel slag 350, S95 slag powder 25, fly ash 15, silica fume 8, retarder It is formulated in a weight ratio of 0.008, naphthalene water reducing agent 1.80, latex powder 3, cellulose ether 0.10, defoaming agent 0.06, and polyvinyl alcohol fiber 0.09. Add water at 12% of the total weight of the reinforcing material and stir evenly to obtain the desired product. The performance test results are shown in Table 1.

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Abstract

The invention belongs to the technical field of building materials, in particular relates to a quick-hardening early-strength structure reinforcement material based on aluminate cement and steel slag. The structure reinforcement material consists of aluminate cement, steel slag, ore slag powder, fly ash, silicon ash, a retarder, a water reducing agent, a latex powder, cellulose ether, a defoamer and poval fiber. By using the material provided by the invention, the problems of the common cement-based reinforcement material, such as high construction difficulty, long wet operation time and low early strength, can be solved. According to the invention, a composite gel material supplemented by steel aggregate, a composite additive and fiber is subjected to dry mixing and then packaged for supply; in scene, the structure reinforcement material provided by the invention can be used after adding water and stirring; and the structure reinforcement material has the characteristics of high early strength, good cracking resistance, good permeability resistance, small shrinkage, excellent durability and the like, is easy to construct and is suitable for reinforcing works of buildings, wharfs, bridges, dams, railways, tunnels and the like.

Description

Technical field [0001] The invention belongs to the technical field of building materials, and specifically relates to a fast-hardening and early-strength structural reinforcement material based on aluminate cement and steel slag. Background technique [0002] Concrete is the most widely used and most widely used building material in the world today. Due to the low tensile strength of concrete, large drying shrinkage, poor toughness, coupled with the influence of changing environment, poor construction quality or improper design, concrete tends to produce diseases and shorten its service life. In order to prolong the service life of concrete buildings, it is necessary to repair and strengthen the diseased concrete structures. [0003] Concrete structure reinforcement materials mainly include cement-based reinforcement materials, steel and welding materials, fiber and fiber composite materials, adhesives and rust inhibitors, of which cement-based reinforcement materials are the mos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B18/30C04B18/14
CPCY02W30/91
Inventor 孙振平杨洁庞敏周栋梁
Owner TONGJI UNIV
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