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High-strength impermeable anti-freezing concrete and preparation method thereof

A concrete and high-strength technology, applied in the field of concrete, can solve the problems of poor impermeability, cracking, and poor cement bonding and fusion, and achieve the effect of improving frost resistance and compressive strength.

Inactive Publication Date: 2020-09-08
浙江方远新强低碳建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Through the above formula, although concrete with improved performance can be prepared, based on the nature of polypropylene fiber as a hydrophobic material, it has the problems of insufficient bonding and fusion with cement and low bonding strength, making the concrete time When it is longer, it is prone to cracking, resulting in poor impermeability

Method used

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  • High-strength impermeable anti-freezing concrete and preparation method thereof
  • High-strength impermeable anti-freezing concrete and preparation method thereof

Examples

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preparation example 1

[0036] The components and the contents of each component of the cellulose fiber predispersion of Preparation Example 1 are shown in Table 1. The preparation steps of the cellulose fiber predispersion are: add the silane coupling agent to water, stir until dissolved, and then add After stirring the cellulose fiber for 10 minutes, add fine sand and stir for 1 hour to obtain the cellulose fiber predispersion.

[0037] Each component of the cellulose fiber predispersion of table 1 preparation example 1-3 and the amount (kg) of each component

[0038] raw material Preparation Example 1 Preparation example 2 Preparation example 3 Cellulose Fiber 1 1.2 1.5 fine sand 15 12 10 A silane coupling agent 5 6 7 water 15 13 10

preparation example 2

[0040] The components of the cellulose fiber predispersion of Preparation Example 2 and the contents of each component are shown in Table 1. The preparation steps of the cellulose fiber predispersion are: add the silane coupling agent to water, stir until dissolved, and then add After stirring the cellulose fibers for 20 minutes, add fine sand and stir for 1.5 hours to obtain the cellulose fiber predispersion.

preparation example 3

[0042] Each component of the cellulose fiber predispersion of Preparation Example 3 and the content of each component are shown in Table 1. The preparation steps of the cellulose fiber predispersion are: add the silane coupling agent to water, stir until dissolved, and then add After stirring the cellulose fibers for 10 minutes, add fine sand and stir for 2 hours to obtain a cellulose fiber predispersion.

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Abstract

The invention relates to the technical field of concrete, and particularly discloses high-strength impermeable anti-freezing concrete and a preparation method thereof. The high-strength impermeable anti-freezing concrete is prepared from the following raw materials in parts by weight: 400-420 parts of Portland cement, 800-850 parts of aggregate, 20-30 parts of steel fiber, 30-35 parts of cellulosefiber pre-dispersion body, 10-12 parts of silicon powder, 1-1.5 parts of nitrite, 0.5-1 part of sodium benzoate, 8-12 parts of an anti-freezing agent, 1-1.5 parts of a water reducing agent, 1.5-2 parts of an air entraining agent and 220-250 parts of water. The high-strength impermeable anti-freezing concrete has the advantages of high compressive strength and excellent impermeability and frost resistance. The invention further provides a preparation method of the high-strength impermeable anti-freezing concrete.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a high-strength anti-seepage and anti-freeze concrete and a preparation method thereof. Background technique [0002] Concrete refers to the collective name of engineering composite materials that use cementitious materials to cement aggregates into a whole. It refers to the use of cement as cementitious material, sand and stone as aggregates, and water (may A certain proportion of cement concrete obtained by mixing is widely used in civil engineering. [0003] In order to improve the properties of concrete such as cracking, water leakage, low strength, and poor frost resistance, admixtures can be added. Because admixtures have obvious technical and economic effects, it has increasingly become an indispensable component of concrete. Among them, steel fiber, carbon fiber and polypropylene fiber have been applied to concrete as admixtures, which have greatly improved the strength...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B40/00C04B14/48C04B16/06C04B111/27C04B111/76
CPCC04B14/48C04B16/06C04B28/04C04B40/0028C04B2111/27C04B2111/76C04B2201/50C04B14/02C04B14/06C04B18/146C04B22/082C04B24/04C04B2103/302C04B2103/304
Inventor 杨晓华叶慈彪郭峰雷杨海平
Owner 浙江方远新强低碳建材有限公司
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