A kind of prefabricated component early-strength concrete water reducer and preparation method thereof

A technology of concrete water reducing agent and prefabricated components, which is applied in the field of prefabricated components early-strength concrete water reducing agent and cement water reducing agent, which can solve the problems of high maintenance energy consumption and cost increase, and achieve the goal of improving uniformity and reducing winding Possibility, effect of improving early strength

Active Publication Date: 2022-06-07
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the production process, in order to speed up the mold turnover and improve production efficiency, the enterprise generally adopts a steam curing process at a temperature of 60-90°C to quickly improve the early strength of concrete, but it will also cause high energy consumption, cost increase and some quality problems.

Method used

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  • A kind of prefabricated component early-strength concrete water reducer and preparation method thereof
  • A kind of prefabricated component early-strength concrete water reducer and preparation method thereof
  • A kind of prefabricated component early-strength concrete water reducer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A preparation method of a prefabricated component early-strength concrete water-reducing agent is formed by polymerizing the following components, the total mass of the raw materials is 1000 parts, and the raw material components include:

[0035] 10.89 parts of 2-(allyloxy)phenol

[0036] 63.75 parts of ethylene oxide

[0037] 252.43 parts of propylene oxide

[0038] 0.6 part of sodium hydroxide

[0039] Acrylic 35.60 parts

[0040] 4.7 parts of sodium formaldehyde sulfoxylate

[0041] 6.2 parts of di-tert-butyl peroxide

[0042] Thioglycolic acid 3.3 parts

[0043] 7.8 parts of triethanolamine

[0044] The rest is water, the total mass is 1000 parts

[0045] The preparation method includes the following steps:

[0046] (1) add 10.89 parts of 2-(allyloxy) phenol and 0.6 part of sodium hydroxide in the autoclave equipped with stirrer and thermometer, after nitrogen replacement 3 times, start vacuuming to gauge pressure-0.098MPa, then The temperature was raised to...

Embodiment 2-6

[0051] The preparation methods of Examples 2-6 are the same as those of Example 1, and the raw materials and some different process parameters are shown in Tables 1 and 2.

[0052] Table 1

[0053]

[0054]

[0055] Table 2

[0056]

[0057]

[0058] The product of the present invention and Hubei Tengchen TC-900J water reducer were prepared into C50 concrete samples (the same dosage of 0.3wt%), and Table 3 was obtained after testing.

[0059] table 3

[0060]

[0061] According to the test data in Table 3, it can be seen that the concrete samples of the embodiments of the present invention have good 3d strength and can be applied to concrete projects requiring early strength performance.

[0062] figure 1 , 2 SEM images of the TC-900J water reducing agent sample hydrated for 1d and the sample of Example 3, respectively. It can be seen from the figure: the CH crystals in the SEM image of the TC-900J water reducing agent sample are obviously more than that of...

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PUM

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Abstract

The invention provides an early-strength concrete water reducer for prefabricated components and a preparation method thereof. Based on 1000 parts by mass, the raw materials of the water reducer are as follows: 10.88-11.49 parts of phenol alcohol head, 313.96-331.40 parts of cyclic monomer, 0.4-1.2 parts of catalyst, 35.09-37.04 parts of acid substances, 3.4-7.9 parts of Reducing agent, 5.7-8.6 parts of initiator, 6.1-9.4 parts of neutralizing agent, 1.2-4.7 parts of chain transfer agent, and the rest are deionized water. In the present invention, polyether monomers are firstly prepared, and the acid-ether ratio for preparing the water-reducer is determined according to the molecular weight of the prepared polyether, so as to improve the coating performance of the water-reducer molecules. Moreover, the molecular branch of the water reducing agent is a polyether branch, which has good flexibility and can play a good role in steric hindrance.

Description

technical field [0001] The invention belongs to the technical field of concrete, and relates to a cement water-reducing agent, in particular to a prefabricated component early-strength concrete water-reducing agent. Background technique [0002] As a relatively new type of engineering form in today's society, prefabricated buildings also require refined control and management of engineering quality. As the main material in the construction stage of the project, prefabricated concrete components are necessary to increase production and management. This not only can It provides a positive and effective boost for the transformation and upgrading of the construction industry, and can also point out the direction for the future development of the construction industry. Concrete prefabricated buildings themselves belong to the category of modern prefabricated buildings, and the production and management of prefabricated components are closely related to the sustainable development...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/06C08F220/06C08G65/28C04B24/26C04B103/30
CPCC08F283/065C08G65/2612C04B24/2647C04B2103/302C08F220/06
Inventor 李相国许金生吕阳柯凯蹇守卫张乘
Owner WUHAN UNIV OF TECH
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