Environment-friendly anti-freezing type concrete and preparation method thereof

A technology of concrete and waste concrete, which is applied in the field of building materials, can solve the problems of reducing the strength of concrete, weakening the bonding force between cement slurry and aggregate and steel bars, and reducing the durability of concrete, so as to improve the compressive strength, promote environmental protection, The effect of mitigating the impact

Active Publication Date: 2019-08-13
BEIJING ZEHUA ROAD & BRIDGE ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The temperature continues to drop, and when the water in the concrete completely turns into ice, that is, when it completely changes from a liquid phase to a solid phase, the hydration of the cement basically stops, resulting in no increase in the strength of the concrete; (2) due to the water becoming After ice, the volume increases by about 9%, and an expansion stress of about 2.5 MPa is generated at the same time. If this stress is greater than the internal strength of the concrete when it is initial...

Method used

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  • Environment-friendly anti-freezing type concrete and preparation method thereof
  • Environment-friendly anti-freezing type concrete and preparation method thereof
  • Environment-friendly anti-freezing type concrete and preparation method thereof

Examples

Experimental program
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Effect test

preparation example 1-3

[0037] In the preparation example 1-3, polyethylene glycol is selected from the polyethylene glycol of the model PEG-1000 sold by Foshan Dezhong Chemical Technology Co., Ltd., and the gelatin is selected from the product number sold by Fucheng County Yunhai Adhesive Trade Co., Ltd. The gelatin of 1203, the agar was selected from the agar with item number 125 sold by Henan Xingyuan Chemical Products Co., Ltd., and the guar gum was selected from the guar gum with the model GP-J401 sold by Shandong Guangpu Biotechnology Co., Ltd.

preparation example 1

[0038] Preparation Example 1: According to the ratio in Table 1, heat 8kg of water to 40°C, add 4kg of polyethylene glycol, stir evenly, and add 0.7kg of gelatin under stirring until completely dissolved, then add 1.1kg of agar, After stirring until completely dissolved, add 1.3kg of guar gum and 1.5kg of polydextrose, and cool to room temperature after completely dissolving.

[0039] The raw material ratio of antifreeze in table 1 preparation example 1-3

[0040]

preparation example 2

[0041] Preparation Example 2: According to the ratio in Table 1, heat 9kg of water to 45°C, add 4.9kg of polyethylene glycol, stir evenly, and add 1.1kg of gelatin under stirring until it is completely dissolved, then add 1.3kg of agar , after stirring until completely dissolved, add 1.5kg of guar gum and 2kg of polydextrose, and after completely dissolving, cool to room temperature.

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PUM

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Abstract

The invention discloses environment-friendly anti-freezing type concrete and a preparation method thereof. The environment-friendly anti-freezing type concrete is prepared from, by weight, 240-260 parts of cement, 180-200 parts of water, 850-870 parts of gravel, 770-790 parts of medium sand, 60-80 parts of mineral powder, 50-70 parts of coal ash, 4.36-10.36 parts of an additive, 1.25-3.25 parts ofan anti-freezing agent, 30-45 parts of waste concerts particles, 15-25 parts of waste rubber particles, 1.5-3.5 parts of water-based acrylic ester, 10-15 parts of epoxy resin and 8.6-10.6 parts of polyurethane particles; the anti-freezing agent is composed of polyethylene glycol, water, polydextrose, gelatin agar and guar gum. The environment-friendly anti-freezing type concrete has the advantages that the excellent anti-freezing performance is achieved, waste materials can be effectively utilized, contaminating gas in environment can be absorbed, and air is purified.

Description

technical field [0001] The invention relates to the technical field of building materials, more specifically, it relates to an environment-friendly frost-resistant concrete and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy, environmental problems are becoming more and more severe, and the output of various wastes has increased sharply. Recycling wastes is an important way to protect natural resources and promote sustainable development. The acceleration of urban construction in our country has led to a rapid increase in the output of waste concrete. At present, the annual waste concrete produced in my country has reached about 100 million tons, and the long-term accumulated waste concrete will reach billions of tons. In 2015, the amount of waste tires produced in my country reached 330 million, and the recycling rate was less than 50%. Both waste concrete and waste tires can be recycled as concrete materials, ...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00017C04B2111/00025C04B2111/76C04B2201/50C04B14/02C04B14/06C04B18/141C04B18/08C04B2103/302C04B2103/304C04B2103/10C04B24/38C04B24/26C04B18/167C04B14/305C04B18/22C04B24/24C04B24/281C04B24/282C04B14/386
Inventor 李国军沙峰李鹏宇
Owner BEIJING ZEHUA ROAD & BRIDGE ENG CO LTD
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