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Water-permeable concrete early strength agent, water-permeable concrete and preparation method of water-permeable concrete early strength agent

A technology of permeable concrete and early strength agent, applied in the field of permeable concrete early strength agent, permeable concrete and its preparation, to achieve the effects of improving flexural strength, compressive strength and late strength

Active Publication Date: 2022-08-09
江苏佳境生态工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When preparing pervious concrete, it is often necessary to use accelerators to improve the early strength of pervious concrete. At present, there are relatively few studies on accelerators for pervious concrete. Therefore, it is very important to develop a pervious concrete early strength agent with excellent performance for pervious concrete

Method used

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  • Water-permeable concrete early strength agent, water-permeable concrete and preparation method of water-permeable concrete early strength agent
  • Water-permeable concrete early strength agent, water-permeable concrete and preparation method of water-permeable concrete early strength agent
  • Water-permeable concrete early strength agent, water-permeable concrete and preparation method of water-permeable concrete early strength agent

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Experimental program
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Effect test

Embodiment 1

[0037] An early strength agent for permeable concrete comprises the following raw materials by weight percentage: 18% of monocalcium aluminate, 0.8% of diethanol monoisopropanolamine, and 81.2% of ettringite growth promoter.

[0038] The ettringite growth promoter is made from the following raw materials by weight: 50 parts of water-quenched slag micropowder, 10 parts of hemihydrate gypsum, 5 parts of lime powder, and 45 parts of water.

[0039] The preparation method of above-mentioned ettringite growth promoter comprises the following steps:

[0040] (1) Add water-quenched slag micropowder, hemihydrate gypsum, lime powder and water into the mixer according to the proportion, and after stirring evenly, use a ball-forming equipment to form a sphere with a diameter of 5-20mm;

[0041] (2) The sphere is placed at 100°C for steam curing for 13 hours;

[0042] (3) The spheres after steam curing continued to undergo natural curing for 7 days.

[0043] The preparation method of th...

Embodiment 2

[0045] An early strength agent for permeable concrete comprises the following raw materials by weight percentage: 20% of monocalcium aluminate, 1% of diethanol monoisopropanolamine, and 79% of ettringite growth promoter.

[0046]The ettringite growth promoter is made from the following raw materials by weight: 45 parts of water-quenched slag micropowder, 8 parts of hemihydrate gypsum, 6 parts of lime powder, and 42 parts of water.

[0047] The preparation method of above-mentioned ettringite growth promoter comprises the following steps:

[0048] (1) Add water-quenched slag micropowder, hemihydrate gypsum, lime powder and water into the mixer according to the proportion, and after stirring evenly, use a ball-forming equipment to form a sphere with a diameter of 5-20mm;

[0049] (2) The sphere is placed at 100°C for steam curing for 15 hours;

[0050] (3) The spheres after steam curing continued to undergo natural curing for 5 days.

[0051] The preparation method of the abov...

Embodiment 3

[0053] An early strength agent for permeable concrete comprises the following raw materials by weight percentage: 15% of monocalcium aluminate, 0.5% of diethanol monoisopropanolamine, and 84.5% of ettringite growth promoter.

[0054] The ettringite growth promoter is made from the following raw materials by weight: 55 parts of water-quenched slag micropowder, 5 parts of natural dihydrate gypsum, 3 parts of lime powder, and 35 parts of water.

[0055] The preparation method of above-mentioned ettringite growth promoter comprises the following steps:

[0056] (1) Add water-quenched slag micropowder, natural dihydrate gypsum, lime powder and water to the mixer according to the proportion, and after stirring evenly, use a ball-forming equipment to form a sphere with a diameter of 5-20mm;

[0057] (2) The sphere is placed at 90°C for steam curing for 10 hours;

[0058] (3) The spheres after steam curing continued to undergo natural curing for 8d.

[0059] The preparation method o...

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Abstract

The invention relates to the technical field of pervious concrete, in particular to a pervious concrete early strength agent, pervious concrete and a preparation method thereof.The pervious concrete early strength agent is prepared from, by weight, 15-20% of monocalcium aluminate, 0.5-1% of diethanolisopropanolamine and 79-84.5% of ettringite growth promoting agent; the ettringite growth promoting agent is prepared from the following raw materials in parts by weight: 45-55 parts of water-quenched superfine slag powder, 5-10 parts of gypsum, 3-6 parts of lime powder and 35-45 parts of water. The pervious concrete comprises the following raw materials in parts by weight: 1600-1800 parts of coarse aggregate, 370-420 parts of cement, 15-50 parts of an admixture, 3-6 parts of a water reducing agent, 135-155 parts of water and an early strength agent accounting for 1%-5% of the mass of the cement, the pervious concrete early strength agent endows pervious concrete with high early strength performance, and the pervious concrete is high in strength, strong in toughness and excellent in comprehensive performance.

Description

technical field [0001] The invention relates to the technical field of permeable concrete, in particular to a permeable concrete early strength agent, permeable concrete and a preparation method thereof. Background technique [0002] Pervious concrete is a kind of paving material developed and used by Europe, America, Japan and other countries for the defects of the original urban road pavement. Pervious concrete is formed by mixing cement-based cementitious materials and coarse aggregates. It has high water permeability and will not cause problems such as reflection and accumulation of water in rainy days. It provides a guarantee for the safety of pedestrians and reduces the burden on the drainage system. At the same time, the scientific application of permeable concrete in engineering projects can also make up for the shortcomings of the lack of groundwater resources, effectively improve the ecological balance, which is conducive to the benign development of human living ...

Claims

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Application Information

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IPC IPC(8): C04B24/12C04B28/04C04B40/02C04B103/10
CPCC04B40/0039C04B28/04C04B40/024C04B2111/00284C04B2201/50C04B2103/10C04B22/0093C04B22/064C04B22/143C04B18/141C04B24/122C04B14/02C04B14/48C04B14/324C04B24/281C04B2103/302Y02W30/91
Inventor 许斌谢波陈大敏
Owner 江苏佳境生态工程技术有限公司
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