Negative temperature concrete antifreezer

A technology for concrete and antifreeze, applied in the field of negative temperature concrete antifreeze, can solve the problems of difficulty in construction in extremely cold weather, increase in total alkali content of concrete, concrete damage, etc., and achieves improved antifreeze performance, simple preparation process, and environmentally friendly raw materials. The effect of pollution

Active Publication Date: 2016-09-21
JIANGSU CHINA RAILWAY ARIT NEW MATEIRALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN105110694A discloses a concrete antifreeze agent, the antifreeze component is sodium sulfate, if the content of the antifreeze in the concrete is too high, the total alkali content in the concrete will increase, and the alkali-aggregate reaction will occur, which will cause great damage to the concrete
CN103755214 A discloses a concrete antifreeze agent, which has no water-reducing component in its raw material composition, and is used at -10°C, which is difficult to meet the construction requirements in extremely cold weather.

Method used

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  • Negative temperature concrete antifreezer
  • Negative temperature concrete antifreezer
  • Negative temperature concrete antifreezer

Examples

Experimental program
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Effect test

example 1

[0015] A preparation method of negative temperature concrete is:

[0016] Step 1: Weigh each raw material according to mass percentage

[0017]

[0018] Step 2: Put the weighed raw materials in a reaction kettle, place them in a water bath at a temperature of 45°C and stir them evenly to obtain a negative temperature concrete antifreeze agent. Mixed into concrete according to 2.8% of cementitious material, and cured in -30°C environment.

example 2

[0020] A preparation method of negative temperature concrete is:

[0021] Step 1: Weigh each raw material according to mass percentage

[0022]

[0023] Step 2: Put the weighed raw materials in a reaction kettle, place them in a water bath at a temperature of 40°C and stir them evenly to obtain a negative temperature concrete antifreeze agent. Mixed into concrete according to 2.8% of cementitious material, and cured in -30°C environment.

example 3

[0025] A preparation method of negative temperature concrete is:

[0026] Step 1: Weigh each raw material according to mass percentage

[0027]

[0028] Step 2: Put the weighed raw materials in a reaction kettle, place them in a water bath at a temperature of 50°C, and stir evenly to obtain a negative temperature concrete antifreeze agent. Mixed into concrete according to 2.8% of the cementitious material, and maintained at -15°C.

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PUM

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Abstract

The invention relates to a negative temperature concrete antifreezer. The antifreezer comprises, by weight, 18-25% of a polycarboxylic high-performance water reducer, 5-10% of an anti-freeze component, 0.05-1.2% of a rust inhibition component, 0.1-0.5% of organic alkylol amine, 0.02-0.06% of sodium alkyl sulfonate and 65-75% of water. The antifreezer can effectively improve the frost heaving stress generated by freezing of water in concrete at a negative temperature of -30 ~ -10DEG C, is in favor of improving the early strength of concrete, and has the advantages of enhanced antifreeze ability, environmental protection, no chloride ions, low cost and stable performances.

Description

technical field [0001] The invention relates to the application field of concrete admixtures, in particular to a negative temperature concrete antifreeze agent. Background technique [0002] In northern my country and the Qinghai-Tibet Plateau, winter lasts for a long time. With the development of engineering construction, the long cold temperature has brought many problems to concrete winter construction. Under the environment of negative temperature, rational use of antifreeze is one of the ways to reduce the early diseases of concrete and improve the durability of concrete. The freezing point is usually lowered by adding industrial salt to the concrete, which can ensure the liquid water required for the hydration of the cement in the concrete at a certain negative temperature. CN105110694A discloses a concrete antifreeze agent. The antifreeze component is sodium sulfate. If the content of the antifreeze in concrete is too high, the total alkali content in the concrete wi...

Claims

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Application Information

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IPC IPC(8): C04B24/32C04B103/60
CPCC04B40/0039C04B2103/601C04B24/32C04B24/02C04B22/16C04B24/121C04B24/16C04B22/085C04B24/12C04B22/10
Inventor 姜海东仇影郑春扬郭兆来
Owner JIANGSU CHINA RAILWAY ARIT NEW MATEIRALS CO LTD
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