High-strength concrete

A concrete and high-strength technology, applied in the field of high-strength concrete, can solve the problem of insufficient strength of ordinary concrete, and achieve the effects of strong chemical resistance, improved concrete strength, and reduced density

Inactive Publication Date: 2017-09-12
成都市德容建筑劳务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-strength concrete to solve the problem of insufficient strength of existing ordinary concrete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This embodiment provides a high-strength concrete, comprising 10 parts by weight of cement, 35 parts by weight of sand, 60 parts by weight of fine stone, 13 parts by weight of silica fume, 7 parts by weight of rubber powder, 3 parts by weight of modified bamboo fiber, polyethylene 1 part by weight of alcohol fiber, 16 parts by weight of steel fiber and 3 parts by weight of polypropylene fiber; the length of the steel fiber is 11.7mm, the diameter is 0.17mm, and the tensile strength is ≥ 2850Mpa; the polypropylene fiber or polyvinyl alcohol fiber 6mm in length and 0.025mm in diameter.

[0024] The modified bamboo fiber is obtained after bamboo fiber is sequentially acidified, filtered, neutralized, and dried, wherein the acidified step is to soak the bamboo fiber in a solution with a pH of 2 for 4 hours at a temperature of 60 degrees Celsius .

[0025] Although it is possible to make high performance concrete with a compressive strength of up to 100 MPa using pure cemen...

Embodiment 2

[0033] This embodiment provides a high-strength concrete, comprising 12 parts by weight of cement, 45 parts by weight of sand, 75 parts by weight of fine stone, 17 parts by weight of silicon fume, 12 parts by weight of rubber powder, 5 parts by weight of modified bamboo fiber, polyethylene 4 parts by weight of alcohol fiber, 40 parts by weight of steel fiber and 7 parts by weight of polypropylene fiber; the length of the steel fiber is 14.3mm, the diameter is 0.23mm, and the tensile strength is 3150Mpa; the length of the polypropylene fiber or polyvinyl alcohol fiber is 10mm with a diameter of 0.035 mm.

[0034] The modified bamboo fiber is obtained after bamboo fiber is sequentially acidified, filtered, neutralized and dried, wherein the acidified step is to soak the bamboo fiber in a solution with a pH of 4 for 6 hours at a temperature of 75 degrees Celsius .

Embodiment 3

[0036] This embodiment provides a high-strength concrete, comprising 11 parts by weight of cement, 40 parts by weight of sand, 70 parts by weight of fine stone, 15 parts by weight of silicon fume, 9 parts by weight of rubber powder, 4 parts by weight of modified bamboo fiber, polyethylene 3 parts by weight of alcohol fiber, 30 parts by weight of steel fiber and 5 parts by weight of polypropylene fiber; the length of the steel fiber is 13.5mm, the diameter is 0.20-0.22mm, and the tensile strength is ≥ 2850Mpa; the polypropylene fiber or polyvinyl alcohol The fiber has a length of 8 mm and a diameter of 0.030 mm.

[0037] The modified bamboo fiber is obtained after bamboo fiber is sequentially acidified, filtered, neutralized, and dried, wherein the acidified step is to soak the bamboo fiber in a solution with a pH of 3 for 5 hours at a temperature of 68 degrees Celsius .

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Abstract

The invention discloses high-strength concrete. The high-strength concrete is prepared from, by weight, 10-12 parts of cement, 35-45 parts of sand, 60-75 parts of coarse aggregate, 13-17 parts of silicon powder, 7-12 parts of rubber powder, 3-5 parts of modified bamboo fibers, 1-4 parts of polyvinyl alcohol fibers and 3-7 parts of polypropylene fibers. By addition of a certain quantity of silicon powder into cement and sand, pressure resistance of the concrete is greatly improved; due to addition of the modified bamboo fibers, the polyvinyl alcohol fibers and the polypropylene fibers, cracking resistance of the concrete is improved while concrete strength is improved as well, and concrete density is reduced to some extent.

Description

technical field [0001] The invention relates to the construction field, in particular to high-strength concrete. Background technique [0002] Concrete generally refers to the cement concrete obtained by using cement as the cementitious material, sand and gravel as the aggregate, and water in a certain proportion. It is also called ordinary concrete. It is widely used in civil engineering. [0003] As people's utilization of land is getting higher and higher, more and more skyscrapers have appeared, which has high requirements for the strength of concrete used in building buildings, which cannot be met by existing ordinary concrete, so a kind of high-strength concrete. Contents of the invention [0004] The purpose of the present invention is to provide a high-strength concrete to solve the problem of insufficient strength of the existing ordinary concrete. [0005] In order to solve the above-mentioned technical problems, the present invention adopts the following techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/14
CPCC04B18/146C04B28/00C04B2201/50C04B14/06C04B14/02C04B16/04C04B16/02C04B16/0641C04B16/0633Y02W30/91
Inventor 曾晓予
Owner 成都市德容建筑劳务有限公司
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