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High crack-proof, impervious composite material for concrete and producing method thereof

A technology of composite materials and production methods, applied in the field of concrete admixtures, to achieve the effects of simple production methods, avoiding quality instability, and low cost

Active Publication Date: 2008-05-07
南京派尼尔科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to produce a single product compounded by expansion agent and synthetic fiber, the dispersion of high-volume fiber in dry powder is an unresolved technical problem

Method used

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  • High crack-proof, impervious composite material for concrete and producing method thereof
  • High crack-proof, impervious composite material for concrete and producing method thereof
  • High crack-proof, impervious composite material for concrete and producing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: HEA expansion agent 90.0%, synthetic fiber 0%, water retaining agent 0%, naphthalenesulfonate formaldehyde condensate superplasticizer 10.0%.

Embodiment 2

[0026] Example 2: AEA expansion agent 97.0%, polypropylene fiber 3.0%, water retaining agent 0%, superplasticizer 0%.

Embodiment 3

[0027] Example 3: AEA expansion agent 91.5%, polypropylene fiber 1.5%, water retaining agent 0%, naphthalene sulfonate formaldehyde condensate superplasticizer 8.0%.

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Abstract

The invention relates to high anti-cracking and high anti-penetrating composite material for concrete and the preparation method thereof, and contains the following components according to the weight ratio: expansion agent of 80 to 99 percent, synthetic fibre of 0.5 to 4.0 percent, water retention agent of 0 to 4.0 percent and water reducing agent of 0 to 12 percent. The preparation method comprises the steps as follows: mixing the components till the coefficient of dispersion of the distributed synthetic fibre is less than 0.03. The invention having the advantages of simple preparation method and low cost greatly simplifies the production art of the concrete and brings higher anti-cracking and anti-penetrating abilities of the concrete.

Description

【Technical field】 [0001] The invention relates to a high-crack-resistant and high-impermeability composite material for concrete and a production method thereof, belonging to the technical field of concrete admixtures. This composite material can be used in various concrete construction projects, especially water conservancy, seaports, bridges, underground, pools, roofs and other concrete structures that require high impermeability, ultra-long, ultra-wide, and ultra-large concrete structures that require high crack resistance. 【Background technique】 [0002] The main components of cement concrete are cement paste and aggregates. During the process of hydration and hardening, cement paste has large chemical shrinkage and drying shrinkage. When this shrinking deformation is restricted, larger stress of drawing will arise inside the concrete. In addition, the effect of external loads, temperature changes, etc. will lead to the generation of internal stress in concrete. Cement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B22/08C04B16/06C04B24/22
CPCC04B2111/00275C04B2111/00293C04B2111/343C04B40/0039Y02W30/91C04B16/0633C04B16/0658C04B16/0691C04B22/008C04B28/02C04B40/0032C04B2103/302C04B2103/46C04B18/26C04B20/0048C04B22/148C04B24/226C04B24/383C04B24/2641
Inventor 叶德平朱瑾
Owner 南京派尼尔科技实业有限公司
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