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High-strength pervious concrete

A permeable concrete, high-strength technology, applied in the field of concrete, can solve the problems of cracks in the concrete structure, lack of strengthening the strength of the cement, affecting the strength of the concrete, etc., and achieve the effects of strengthening the bonding effect, increasing the wear resistance, and improving the strength.

Active Publication Date: 2019-12-13
成都志达商品混凝土厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: the permeable concrete binds stones through cement. After the concrete is hardened, when the concrete is subjected to external force, there is no substance inside the cement to strengthen the strength of the cement, and the bonding between the cement and the stones The force is weak, and a large number of structural cracks appear inside the concrete, which affects the strength of the concrete

Method used

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  • High-strength pervious concrete

Examples

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Effect test

Embodiment 1

[0027] A high-strength permeable concrete, comprising the following components in parts by weight: 345 parts of cement, 1125 parts of modified coarse aggregate, 32 parts of admixture, 136 parts of mixing water, 10 parts of fiber, and 5 parts of water reducer Among them, the admixture is fly ash, the particle size of fly ash is 1-2 μm, the fiber is steel fiber, and the water reducer is polycarboxylate water reducer.

[0028] The modification steps of modified coarse aggregate are:

[0029] S1: Soak the coarse aggregate with a 15% polyvinyl alcohol aqueous solution for 12 hours, and then dry the coarse aggregate until it is half dry;

[0030] S2: Paste the mixture of silicon powder, polyvinyl alcohol powder and calcium oxide particles on the outside of the semi-dried coarse aggregate. In the mixture of silicon powder, polyvinyl alcohol powder and calcium oxide particles, 4 parts of silicon powder, polyvinyl alcohol Powder 7, calcium oxide particles 3 parts, and then further dry...

Embodiment 2

[0033] The difference with Example 1 is:

[0034] In parts by weight, it includes the following components: 320 parts of cement, 1100 parts of modified coarse aggregate, 30 parts of admixture, 120 parts of mixing water, 8 parts of fiber, and 3 parts of water reducer.

Embodiment 3

[0036] The difference with Example 1 is:

[0037] In parts by weight, it includes the following components: 380 parts of cement, 1200 parts of modified coarse aggregate, 40 parts of admixture, 150 parts of mixing water, 18 parts of fiber, and 7 parts of water reducing agent.

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Abstract

The invention relates to a high-strength pervious concrete, and belongs to the technical field of concretes. The high-strength pervious concrete comprises, by weight, 300-400 parts of cement, 1000-1300 parts of modified coarse aggregate, 20-45 parts of an admixture, 100-170 parts of mixing water, 3-10 parts of a fiber and 1-10 parts of a water reducing agent. The modified coarse aggregate is modified through the following steps: S1, soaking the coarse aggregate in an aqueous polyvinyl alcohol solution having a mass fraction of 10-30% for 10-20 h, and then airing the coarse aggregate until thecoarse aggregate is half-dry; and S2, adhering a silicon powder, a polyvinyl alcohol powder and calcium oxide particles to the exterior of the aired semi-dry coarse aggregate, and then further airingthe coarse aggregate. The strength of the concrete is enhanced.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a high-strength permeable concrete. Background technique [0002] In the current urbanization construction, the ground surface is gradually hardened and covered by water-blocking materials such as buildings and concrete. The dense surface pavement is not conducive to alleviating noise pollution in the city, mainly from the noise generated by road traffic; in rainy days, it cannot be drained in time, causing The water on the road will cause "drifting", "splashing" and "glare at night" when driving in rainy days, which will bring inconvenience to pedestrians and vehicles; Increase the "heat island effect" of the city. [0003] The existing Chinese invention patent with publication number CN105906246A discloses a permeable concrete and a floor manufacturing process using this permeable concrete. The raw materials of this permeable concrete include 90-110 parts by mass of stones, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/18C04B20/12
CPCC04B20/12C04B28/186C04B2111/00284C04B2201/50C04B7/00C04B14/00C04B18/08C04B22/002C04B14/48C04B2103/302C04B14/386C04B20/1033C04B22/064C04B20/1066
Inventor 谢佼
Owner 成都志达商品混凝土厂