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Concrete moisture release agent and preparation method and use method thereof

A technology of concrete and slow-release agent, applied in the field of building materials, can solve the problems of complex production process, unstable release, low water absorption capacity, etc., and achieve the effects of good compatibility, reduced application cost, and reduced shrinkage

Active Publication Date: 2020-07-14
江苏超力建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main domestic internal curing agents are divided into three categories: one is light aggregate or ceramsite with porous structure, which has low water absorption capacity; the other is pure superabsorbent resin, which has poor dispersion and unstable release; Synthetic raw materials such as plant starch, the production process is complicated and the cost is high

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  • Concrete moisture release agent and preparation method and use method thereof
  • Concrete moisture release agent and preparation method and use method thereof

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preparation example Construction

[0022] In addition, the present invention also provides a preparation method of the above-mentioned concrete moisture slow-release agent, comprising the steps of:

[0023] S101: Mix all the raw material components evenly, and then perform ultrasonic vibration at 15-25°C for 20-40min, the frequency of ultrasonic vibration is 20-130kHz, to obtain the expanded product;

[0024] S102: Soak the expanded product in deionized water for 3 to 5 times, each soaking time is 1 to 3 hours;

[0025] S103: vacuum-dry the product obtained in S102 at 40-80° C. to constant weight;

[0026] S104: Pulverize the dried product, and then sieve with a sieve to obtain a concrete moisture slow-release agent with a particle size of 0.15-0.21 mm.

[0027] Furthermore, the present invention also provides a method for using the above-mentioned concrete moisture slow-release agent, comprising the steps of:

[0028] adding the concrete moisture slow-release agent into water, absorbing water to a saturated ...

Embodiment 1

[0031] This embodiment provides a concrete moisture slow-release agent. The raw material components are calculated by weight parts, including: 10 parts by weight of N-isopropylacrylamide, 0.5 parts by weight of N,N'-methylenebisacrylamide, persulfuric acid 0.25 parts by weight of potassium, 0.25 parts by weight of sodium bisulfite and 89 parts by weight of deionized water.

[0032] According to above-mentioned raw material, adopt the preparation method of concrete moisture slow-release agent provided by the invention, prepare concrete moisture slow-release agent:

[0033] S101: Mix all the raw material components evenly, and then perform ultrasonic vibration at 20°C for 30 minutes, the frequency of ultrasonic vibration is 80kHz, to obtain an expanded product;

[0034] S102: Soak the expanded product in deionized water for 3 times, each soaking time is 2 hours;

[0035] S103: vacuum-dry the product obtained in S102 at 60° C. to constant weight;

[0036] S104: Pulverize the dr...

Embodiment 2

[0038] This embodiment provides a concrete moisture slow-release agent. The raw material components are calculated by weight parts, including: 5 parts by weight of N-isopropylacrylamide, 0.3 parts by weight of N,N'-methylenebisacrylamide, persulfuric acid 0.15 parts by weight of potassium, 0.15 parts by weight of sodium bisulfite and 94.4 parts by weight of deionized water.

[0039] According to above-mentioned raw material, adopt the preparation method of concrete moisture slow-release agent provided by the invention, prepare concrete moisture slow-release agent:

[0040] S101: Mix all the raw material components evenly, and then perform ultrasonic vibration at 20°C for 30 minutes, the frequency of ultrasonic vibration is 80kHz, to obtain an expanded product;

[0041] S102: Soak the expanded product in deionized water for 3 times, each soaking time is 2 hours;

[0042]S103: vacuum-dry the product obtained in S102 at 60° C. to constant weight;

[0043] S104: Pulverize the dr...

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Abstract

The invention relates to a concrete moisture slow-release agent as well as a preparation method and a using method thereof. The concrete moisture slow-release agent is prepared from the following raw material components in parts by weight: 5-10 parts of N-isopropylacrylamide, 0.25-0.5 part of N,N'-methylenediacrylamide and 85-95 parts of water. The preparation method comprises the following steps: uniformly mixing all the raw material components, and performing ultrasonic vibration so as to obtain an expansion matter; soaking the expansion matter in water and drying to constant weight; and grinding the dried product, screening by using a bushing screen, thereby obtaining the concrete moisture slow-release agent. The concrete moisture slow-release agent provided by the invention can achieve the effects of effectively improving cement hydration inside the concrete, improving the strength and alleviating shrinkage property of the concrete.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a concrete moisture slow-release agent and its preparation method and use method. Background technique [0002] With the development of my country's economy and society, the requirements for various buildings, bridges, underground buildings, etc. are getting higher and higher, and the strength and durability of concrete are particularly important. At present, the strength of concrete is mainly improved by adding active admixtures and superplasticizers. However, the addition of high-efficiency water-reducing agents will reduce the water consumption of concrete, insufficient hydration, and increase the shrinkage of concrete. Therefore, in actual concrete construction, how to increase the degree of cement hydration and reduce concrete Shrinkage has become an urgent problem to be solved. [0003] Traditional concrete curing methods include natural curing, atmospheric ste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/12C04B28/00C04B111/34C04B103/00
CPCC04B28/00C04B40/0039C04B2103/0068C04B24/124C04B22/002C04B22/14C04B14/06C04B14/02C04B24/24
Inventor 郑娇玲周铁柱黄庆佟莉王若臣王爱军
Owner 江苏超力建材科技有限公司
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