Viscosity reducer for concrete and preparation method thereof

A viscosity reducer and concrete technology, which is applied in the field of building materials, can solve the problems of high-strength concrete crack resistance and poor compatibility, and achieve the effects of reducing efflorescence, reducing cracks, and improving compatibility

Active Publication Date: 2022-03-11
四川鼎德商品混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned related technologies, the inventor believes that the main component of the concrete viscosity reducer in the above-mentioned related technologies is methacrylamide, and the compatibility between methacrylamide and other components such as sand in high-strength concrete is not good, giving high The crack resistance of high-strength concrete has a certain adverse effect

Method used

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  • Viscosity reducer for concrete and preparation method thereof
  • Viscosity reducer for concrete and preparation method thereof
  • Viscosity reducer for concrete and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0038] Embodiment 1: a kind of preparation method of concrete viscosity reducer, comprises the steps:

[0039] S1 preparation: Weigh 25kg of water, add 2.25kg of sodium isethionate and 600g of fatty alcohol polyoxyethylene ether, and then add 8.5kg of methacrylamide, and mix evenly to prepare a precursor solution.

[0040] S2 Viscosity reducer preparation: sieve the zeolite powder with a sieve with a pore size of 45 μm, select the zeolite powder with a particle size not greater than 45 μm, and dry the zeolite powder with a particle size not greater than 45 μm at 150° C. for 120 minutes to obtain a dry zeolite powder. Standby; take 20kg of polyethylene glycol, stir at 25°C at a speed of 200 rpm, add 1.15kg of phosphorus pentoxide dropwise, the system releases heat during the dropwise addition of phosphorus pentoxide, cool down with a water bath, and control the feeding speed to make The temperature is not higher than 28°C. After the feeding is completed, continue to stir for 30...

Embodiment 2

[0042] The difference between embodiment 2 and embodiment 1 is that no fatty alcohol polyoxyethylene ether is added in embodiment 2, and the others are consistent with embodiment 1.

Embodiment 3

[0044] The difference between embodiment 3 and embodiment 1 is that embodiment 3 replaces sodium isethionate with sodium dodecyl sulfonate of equal quality (provided by Jinan Xinwang Chemical Co., Ltd., superior product), and others are all the same as those in the implementation Example 1 remains the same.

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Abstract

The invention discloses a viscosity reducer for concrete and a preparation method thereof, and relates to the technical field of building materials. A viscosity reducer for concrete, mainly made of the following viscosity reducer raw materials in parts by weight: 5-12 parts of methacrylamide, 20-30 parts of water; the viscosity reducer raw materials also include regulator and polyethylene Glycol phosphate compound; The conditioner comprises the following parts by weight conditioner raw material: 1.5-3 parts of surfactant; the polyethylene glycol phosphate compound is mainly made of raw materials comprising the following parts by weight: polyethylene 15-25 parts of diol, 0.9-1.4 parts of phosphorus pentoxide, 12-20 parts of zeolite powder. It has the advantage of improving the crack resistance of concrete. The preparation method comprises the following steps: modulation, preparation of viscosity reducing agent and the like.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a viscosity reducer for concrete and a preparation method thereof. Background technique [0002] Concrete is a composite mixture prepared by mixing cement with water, sand, stones and admixtures in an appropriate proportion and uniformly. After compaction molding and curing hardening, it forms an artificial stone with excellent mechanical properties. . Concrete is widely used in modern architecture. [0003] In the field of high-strength concrete applications, in order to improve the strength of concrete, low water-binder ratios are generally used. Under the condition of low water-to-binder ratio, there are a series of construction problems in the process of concrete mixing, transportation and pumping, and the construction performance is not good; in order to improve the construction performance of high-strength concrete, it is generally necessary to add concrete red...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/42C04B24/16C04B24/32
CPCC04B40/0046C04B24/425C04B2103/34C04B24/16C04B24/32C04B24/124
Inventor 廖小刚邱荣波
Owner 四川鼎德商品混凝土有限公司
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