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High-strength abrasion-resistant concrete, and preparation method thereof

A concrete and high-strength technology, applied in the field of concrete materials, can solve the problems of high brittleness and poor wear resistance of concrete, and achieve the effect of overcoming high brittleness, improving durability and bearing capacity.

Inactive Publication Date: 2017-02-15
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first purpose of the present invention is to provide a high-strength wear-resistant concrete. In the present invention, by making full use of the matching filling and chemical activity of the raw material mixture of different sizes of particles, combined with the advantages of high tensile strength of steel fibers, a high-strength wear-resistant concrete is formed. Concrete, and solve technical problems such as high brittleness and poor wear resistance of concrete in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] According to the following raw material components, weigh respectively: 1000g of cement, 600g of quartz sand, 500g of nickel slag, 50g of quartz powder, 150g of silica fume, 60g of nano-silica powder, 182g of steel fiber, 11g of polycarboxylate superplasticizer and 230g of water.

[0035] Wherein, the cement is Portland cement of 52.5 strength grade; the particle size of the quartz sand is 150-500 μm, SiO 2 Content ≥ 90%; the particle size of the quartz powder is 0.5-150 μm, SiO 2 Content ≥ 90%; the particle size of the nickel slag is 50-350 μm; the specific surface area of ​​the silica fume is > 15000m 2 / kg, SiO 2 Content > 90%; the particle size of the nano silicon powder ≤ 100nm, SiO 2 The content is >99%; the length of the steel fiber is 10mm, the diameter is 0.2mm, and the tensile strength is 1500MPa.

[0036] Then, prepare high-strength wear-resistant concrete as follows:

[0037] (1) Forming: After mixing the weighed raw materials, pour them into the mold; ...

Embodiment 2

[0040] According to the following raw material components, weigh respectively: 1000g of cement, 600g of quartz sand, 500g of nickel slag, 50g of quartz powder, 200g of silica fume, 50g of nano-silica powder, 189g of steel fiber, 13g of polycarboxylate superplasticizer, 235g of water.

[0041] Wherein, the cement is Portland cement of 52.5 strength grade; the particle size of the quartz sand is 150-500 μm, SiO 2 Content ≥ 90%; the particle size of the quartz powder is 0.5-150 μm, SiO 2 Content ≥ 90%; the particle size of the nickel slag is 50-350 μm; the specific surface area of ​​the silica fume is > 15000m 2 / kg, SiO 2Content > 90%; the particle size of the nano silicon powder ≤ 100nm, SiO 2 The content is >99%; the length of the steel fiber is 10mm, the diameter is 0.2mm, and the tensile strength is 1500MPa.

[0042] Then, prepare high-strength wear-resistant concrete as follows:

[0043] (1) Forming: After mixing the weighed raw materials, pour them into the mold;

[...

Embodiment 3

[0046] According to the following raw material components, weigh respectively: cement 1000g, quartz sand 600g, nickel slag 500g, quartz powder 100g, silica fume 250g, nano silicon powder 40g, steel fiber 196g, polycarboxylate superplasticizer 15g, 240g of water.

[0047] Wherein, the cement is Portland cement of 52.5 strength grade; the particle size of the quartz sand is 150-500 μm, SiO 2 Content ≥ 90%; the particle size of the quartz powder is 0.5-150 μm, SiO 2 Content ≥ 90%; the particle size of the nickel slag is 50-350 μm; the specific surface area of ​​the silica fume is > 15000m 2 / kg, SiO 2 Content > 90%; the particle size of the nano silicon powder ≤ 100nm, SiO 2 The content is >99%; the length of the steel fiber is 10mm, the diameter is 0.2mm, and the tensile strength is 1500MPa.

[0048] Then, prepare high-strength wear-resistant concrete as follows:

[0049] (1) Forming: After mixing the weighed raw materials, pour them into the mold;

[0050] (2) Curing: put...

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Abstract

The invention provides a high-strength abrasion-resistant concrete, and a preparation method thereof. According to the preparation method, full utilization of matching filling and chemical activity effect of raw material mixtures with different particle sizes is realized, and in addition, the tensile strength of steel fiber is high, so that the high-strength abrasion-resistant concrete is prepared. The high-strength abrasion-resistant concrete is high in compressive strength and rupture strength, low in wear rate, rapid in strength development, short in curing time, and high in product stability; application prospect is promising; in the preparation method, the raw materials of the invention are taken as concrete constituents, and the high-strength abrasion-resistant concrete is prepared via further standing and curing; the preparation method is simple; and both the strength and the abrasion resistance of the high-strength abrasion-resistant concrete are high.

Description

technical field [0001] The invention belongs to the technical field of concrete materials, and in particular relates to a high-strength wear-resistant concrete and a preparation method thereof. Background technique [0002] Concrete is an engineering material made of cement, aggregate and water (if necessary, mixed with an appropriate amount of admixtures and mineral admixtures), etc., according to a certain proportion, and hardened by mixing, molding, curing and other processes. It is currently the most widely used, One of the most widely used civil engineering materials, it is an essential material for engineering construction such as roads, railways, bridges, dams, airport pavement, underground structures and housing construction. The development of the concrete industry has made great contributions to the construction of national infrastructure. huge contribution. According to statistics, in 2014 my country's commercial concrete output reached 1.55 billion m 3 , rankin...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/52C04B14/06C04B18/144C04B18/146C04B14/48C04B14/062C04B2103/302
Inventor 诸华军吴其胜潘文彬徐俊郭晨璐侯海军黎水平
Owner YANCHENG INST OF TECH
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