High-strength permeable concrete additive and preparation method thereof

A permeable concrete and additive technology, applied in the field of concrete, can solve the problems of organic materials volatilizing toxic substances, strength, and water permeability decline, and achieve the effects of improving strength and water permeability, low cost, and enhancing strength

Active Publication Date: 2018-09-28
XIAMEN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a certain distance to improve the strength and water permeability at the same time.
In addition, the addition of organic polymer materials to concrete will easily cause the organic materials to volatilize toxic substances after the road surface is exposed to the sun and used for a long time, or the strength and water permeability of the organic materials will decrease due to the aging of the organic materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] An embodiment of the present invention provides a method for preparing the above-mentioned high-strength permeable concrete additive, comprising the following steps:

[0026] S1, mix 1 / 4~1 / 2 ammonium sulfate, 1 / 4~1 / 2 potassium sulfate, 1 / 4~1 / 2 magnesium chloride, 1 / 4~1 / 2 sodium sulfate, 1 / 4~1 / 2 1 / 2 of ferrous sulfate, 1 / 4~1 / 2 of ferric sulfate, 1 / 2~3 / 4 of calcium chloride, 1 / 2~1 / 4 of sodium gluconate are added to water for dissolution in sequence, and then After insulated and stirred, the first mixed solution is obtained;

[0027] S2, adding 1 / 4 to 1 / 2 of the micropowder material into the first mixed solution, and obtaining the second mixed solution after heat preservation and stirring;

[0028] S3, adding the remaining ammonium sulfate, potassium sulfate, magnesium chloride, sodium sulfate, ferrous sulfate, ferric sulfate, calcium chloride, and sodium gluconate into the second mixed solution in sequence, and obtain the third mixed solution after insulated and stirred;...

Embodiment 1

[0038] A kind of high-strength concrete additive that present embodiment provides:

[0039] Formula: 0.6 parts of fine powder, 1 part of ammonium sulfate, 1 part of potassium sulfate, 1 part of sodium sulfate, 1 part of magnesium chloride, 7 parts of ferric sulfate, 1 part of ferrous sulfate, 9 parts of calcium chloride, 0.05 parts of sodium gluconate, water 70 servings. The micropowder material is 0.2 parts of silica fume (0.2 μm) and 0.4 parts of fly ash (0.2 μm).

[0040] The preparation steps are:

[0041] (1) Add 0.25 parts of ammonium sulfate, 0.25 parts of potassium sulfate, 0.25 parts of sodium sulfate, 0.25 parts of magnesium chloride, 1.75 parts of ferric sulfate, 0.25 parts of ferrous sulfate, 4.5 parts of calcium chloride, and 0.0125 parts of sodium gluconate to 70 parts of water in turn , Stir for 30 minutes each time a raw material is added. After the addition, the mixture was transferred to a constant temperature water bath reactor, and stirred at 70° C. for ...

Embodiment 2

[0046] This embodiment provides a kind of high-strength concrete additive:

[0047] Formula: 0.6 parts of fine powder, 1 part of ammonium sulfate, 1 part of potassium sulfate, 1 part of sodium sulfate, 1 part of magnesium chloride, 7 parts of ferric sulfate, 1 part of ferrous sulfate, 9 parts of calcium chloride, 0.05 parts of sodium gluconate, water 70 servings. The micropowder material is 0.2 part of micro silica fume (0.2 μm), and 0.4 part of hydrotalcite / plant cellulose carbide.

[0048] Among them, the preparation method of hydrotalcite / plant cellulose carbide is as follows: disperse 10g of hydrotalcite in 200ml of water, add 0.5g of sodium oleate, stir in a water bath at 75°C for 1 hour, then add 2g of straw cellulose to obtain a mixed solution; Transfer to a reaction kettle, hydrothermally carbonize at 270°C for 1 hour, and then separate, wash, and dry.

[0049] The preparation steps are: the same as in Example 1.

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Abstract

The invention provides a high-strength permeable concrete additive and a preparation method thereof, and relates to the technical field of concrete. The high-strength permeable concrete additive comprises 0.5-3 parts of micro-powder, 1-4 parts of ammonium sulfate, 1-4 parts of potassium sulfate, 1-4 parts of sodium sulfate, 1-4 parts of magnesium chloride, 6-12 parts of ferric sulfate, 1-4 parts of ferrous sulfate, 9-14 parts of calcium chloride, 0.05-0.3 part of sodium gluconate and 55-70 parts of water. Main components of the concrete additive are inorganic matters, less in toxicity and goodin aging resistance. The additive contains a large number of metal ions, the micro-powder is added, and the strength and the water permeability of permeable concrete can be effectively enhanced. Besides, the preparation method of the additive is simple in process, short in cycle, low in cost and applicable to industrial production.

Description

technical field [0001] The invention relates to the technical field of concrete, and in particular to a high-strength permeable concrete additive and a preparation method thereof. Background technique [0002] With the improvement of my country's economic development level, in recent years, real estate has developed rapidly, more and more roads have been laid, and the impermeable area has continued to increase. Among them, the coverage rate of domestic urban roads has reached 7%-15%, and the coverage rate of large cities is about 20%, and problems such as urban waterlogging and urban heat islands have become increasingly prominent. For this reason, the construction of "sponge city" came into being, and the construction of high-strength and high-permeability pavement has also attracted everyone's attention. Permeable concrete is a commonly used pavement construction material mixed with aggregate, cement mineral admixture, water, and additives. It is the best material for buil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/10
CPCC04B40/0046C04B2111/00284C04B2201/50C04B18/146C04B22/147C04B22/124C04B22/149C04B22/14C04B22/002C04B18/08C04B24/10C04B14/042C04B14/022C04B20/0008
Inventor 谢安李月婵陈书长陈龙施修法
Owner XIAMEN UNIV OF TECH
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