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Anti-permeating and anti-cracking concrete and preparation method thereof

A concrete and anti-cracking technology, applied in the field of concrete, can solve the problems of poor impermeability and easy occurrence of cracks in feldspar waste concrete, so as to improve the impermeability and resistance to chemical corrosion, inhibit cracking, and reduce shrinkage cracking. Effect

Inactive Publication Date: 2018-12-14
上海石化安东混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the existing feldspar waste concrete makes reasonable and effective use of feldspar waste, the clay and feldspar waste need to be calcined in the preparation step, and the calcined clay and feldspar waste are prone to cracks after the concrete hardens , resulting in poor impermeability of the feldspar waste concrete

Method used

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  • Anti-permeating and anti-cracking concrete and preparation method thereof
  • Anti-permeating and anti-cracking concrete and preparation method thereof
  • Anti-permeating and anti-cracking concrete and preparation method thereof

Examples

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Embodiment 1

[0031] Embodiment 1: A kind of anti-seepage and anti-cracking concrete, it is characterized in that: comprise the raw material of following parts by weight: 177 parts of water, 202 parts of cement, 734 parts of sand, 1002 parts of stones, 51 parts of fly ash, 60 parts of mineral powder , 3.79 parts of admixture; wherein the admixture includes modified polypropylene fiber, waterproofing agent and water reducer with a weight ratio of 3.2:1.3:1.7; modified polypropylene fiber is prepared by the following method: adding Potassium permanganate with a concentration of 5×10-3mol / L, add acrylic acid with a concentration of 0.8mol / L, and stir for 30 minutes, then drop a small amount of sulfuric acid solution with a concentration of 0.2mol / L, react for 32 minutes, and then add acrylic acid with a concentration of 0.8 mol / L acrylic acid, reacted at 80°C for 3.5 hours, filtered the mother liquor after the reaction, boiled the remaining solid with waste water, removed the homopolymer, carri...

Embodiment 2-9

[0035] Embodiment 2-9, a super-retarded concrete, differs from Embodiment 1 in that the components included and the corresponding parts by weight are shown in Table 1.

[0036] Components included in Table 1 Embodiment 2-9 and their corresponding parts by mass

[0037]

Embodiment 10

[0038] Example 10: An anti-seepage and anti-crack concrete, the difference from Example 1 is that the admixture is composed of modified polypropylene fiber, waterproofing agent and water reducing agent with a mass ratio of 3.9:1.8:2.

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Abstract

The invention discloses anti-permeating and anti-cracking concrete, which relates to the technical field of concrete. The technical scheme of the anti-permeating and anti-cracking concrete mainly comprises the following raw materials in parts by weight: 177-192 parts of water, 202-262 parts of portland cement, 734-830 parts of sand, 1,002-1,012 parts of stones, 51-65 parts of coal ash, 60-77 partsof mineral powder and 3.79-4.61 parts of an additive, wherein the additive comprises modified polypropylene fibers, a water-proofing agent and a water-reducing agent at a weight ratio of 3.2-4.7: 1.3-2.5: 1.7-2.3; the water-proofing agent comprises a triethanolamine water-proofing agent, an air-entraining water-reducing agent and a micro-expansion water-proofing agent at a weight ratio of 1.1-1.5: 1.3-1.7: 0.7-1.3. According to the anti-permeating and anti-cracking concrete, the problems that the concrete is cracked easily after hardening and is relatively poor in anti-permeating performanceare solved. By adding the modified polypropylene fibers and the water-proofing agent, the concrete can be prevented from being cracked when in hardening, so that the anti-permeating performance of theconcrete is improved.

Description

technical field [0001] The invention relates to the technical field of concrete, more specifically, it relates to an anti-seepage and anti-crack concrete and a preparation method thereof. Background technique [0002] Concrete generally refers to Portland cement as the main cementitious material, mixed with water, sand, and stones, and chemical admixtures and mineral admixtures when necessary, mixed in an appropriate proportion, uniformly stirred, densely formed, and cured to harden artificial stone. [0003] In the prior art, you can refer to the Chinese invention patent document with the authorized announcement number CN105060786B, which discloses a feldspar waste concrete and its preparation method, feldspar waste 800-850, clay 150-180, Portland cement 280- 320, phenolic fiber 35-45, polyvinylidene chloride fiber 25-30, water 80-95 and admixture 4.75-5.25, the admixture consists of carbonyl pyraldehyde superplasticizer 6.7-7.5 parts, sodium metaaluminate quick-setting ag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/34
CPCC04B28/04C04B2111/343C04B2111/00293C04B14/06C04B14/02C04B18/08C04B18/141C04B16/0633C04B24/122C04B22/08C04B24/04C04B22/141C04B22/124C04B22/085C04B24/16C04B2103/302C04B2103/0068
Inventor 顾连林袁冬生张耀
Owner 上海石化安东混凝土有限公司
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