C30 high-impermeability concrete with low cementing material consumption and preparation method thereof

A material dosage, concrete technology, applied in rayon manufacturing, textile and papermaking, fiber chemical characteristics, etc., can solve the problems of reduced structural use efficiency, insufficient impermeability, damage, etc., to reduce cracks, reduce macrocracks, inhibit separation effect

Inactive Publication Date: 2020-09-25
湖北合力久盛混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the 1930s, people began to pay attention to the impermeability of concrete, which began with the construction of large-scale hydraulic engineering, such as concrete dams, canals, culverts, and underground structures such as tunnels below the groundwater level; once the impermeability of concrete Insufficient or damaged, will reduce the efficiency of these structures, causing pollution, leakage and other accidents

Method used

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  • C30 high-impermeability concrete with low cementing material consumption and preparation method thereof
  • C30 high-impermeability concrete with low cementing material consumption and preparation method thereof
  • C30 high-impermeability concrete with low cementing material consumption and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A C30 high impermeability concrete with low cementitious material content, per m 3 The raw material composition and proportion of concrete are calculated in parts by weight, as shown in the following table:

[0044] Embodiment 1 Raw material composition and parts by weight proportioning table

[0045]

[0046] Among them, the modified metakaolin is prepared by exciting modification with gypsum, epoxy silane and modified polystyrene.

[0047] Modified polystyrene is ramie fiber / polystyrene copolymer, and its preparation method comprises the steps:

[0048] 1) Stir and mix polystyrene, vinyl silane and BPO initiator evenly, then add to the torque rheometer, and blend at 170°C for 8 minutes;

[0049] 2), add the ramie fiber of polystyrene addition 30% in the torque rheometer again, continue blending;

[0050] 3), extruding the mixture in step 2) to obtain ramie fiber / polystyrene copolymer.

[0051] The preparation method of modified metakaolin comprises the steps: ...

Embodiment 2

[0065] A C30 high impermeability concrete with low cementitious material content, per m 3 The raw material composition and proportion of concrete are calculated in parts by weight, as shown in the following table:

[0066] Embodiment 2 Raw material composition and parts by weight proportioning table

[0067]

[0068] Among them, the modified metakaolin is prepared by exciting modification with gypsum, epoxy silane and modified polystyrene.

[0069] Modified polystyrene is ramie fiber / polystyrene copolymer, and its preparation method is the same as embodiment 1.

[0070] The preparation method of modified metakaolin is the same as in Example 1, and the difference from Example 1 is that the addition of epoxy silane accounts for 0.5% of the quality of metakaolin, and the addition of modified polystyrene accounts for 1% of the addition of metakaolin. %, the addition of gypsum accounts for 3% of the addition of metakaolin.

[0071] A preparation method of C30 high impermeabil...

Embodiment 3

[0073] A C30 high impermeability concrete with low cementitious material content, per m 3 The raw material composition and proportion of concrete are calculated in parts by weight, as shown in the following table:

[0074] Embodiment 3 raw material composition and parts by weight proportioning table

[0075]

[0076]

[0077] Among them, the modified metakaolin is prepared by exciting modification with gypsum, epoxy silane and modified polystyrene.

[0078] Modified polystyrene is ramie fiber / polystyrene copolymer, and its preparation method is the same as embodiment 1.

[0079] The preparation method of modified metakaolin is the same as in Example 1, and the difference from Example 1 is that the addition of epoxy silane accounts for 1.5% of the quality of metakaolin, and the addition of modified polystyrene accounts for 3% of the addition of metakaolin. %, the addition of gypsum accounts for 7% of the addition of metakaolin.

[0080] A preparation method of C30 high...

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Abstract

The invention relates to the technical field of building materials, and specifically relates to a C30 high-impermeability concrete with low cementing material consumption and a preparation method thereof. Each cubic meter of the concrete comprises the following components in parts by weight: 140-170 parts of cement, 40-60 parts of fly ash, 70-90 parts of mineral powder, 15-25 parts of silica fume,20-30 parts of stone powder, 18-22 parts of modified meta-kaolin, 490-520 parts of machine-made sand, 335-350 parts of river sand, 990-1020 parts of gravels, 5.1-6.1 parts of a polycarboxylate waterreducer, 165-175 parts of water and 15-25 parts of anti-cracking fibers, wherein the modified meta-kaolin is prepared by exciting and modifying gypsum, epoxy silane and modified polystyrene. The provided C30 high-impermeability concrete has good impermeability.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a C30 high impermeability concrete with a low amount of gelling material and a preparation method thereof. Background technique [0002] Concrete impermeability refers to the ability of concrete to resist the penetration of pressurized liquids (water, oil, solution, etc.). Impermeability is the most important factor determining the durability of concrete. In the 1930s, people began to pay attention to the impermeability of concrete, which began with the construction of large-scale hydraulic engineering, such as concrete dams, canals, culverts, and underground structures such as tunnels below the groundwater level; once the impermeability of concrete Insufficient or damaged, will reduce the efficiency of these structures, causing pollution, leakage and other accidents. Especially for large hydraulic structures such as dams, the ability of concrete to resist water pene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B16/06C04B20/02C08F257/02C08F230/08D01F6/90D01F1/10C04B14/10C04B111/27C04B111/34
CPCC04B16/0691C04B20/023C04B28/04C04B2111/27C04B2111/343C04B2201/50C08F257/02D01F1/10D01F6/90C08F230/085C04B18/08C04B18/141C04B14/28C04B18/146C04B14/106C04B14/06C04B14/068C04B14/02C04B2103/302C04B14/48C04B14/42
Inventor 鲍洁彭辉辉童贻伟
Owner 湖北合力久盛混凝土有限公司
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