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A functional regulator for concrete composite fine aggregate and its preparation method

A conditioner and fine aggregate technology, applied in the field of concrete, can solve the problems of concrete cracking, poor durability, slow strength growth rate, etc.

Active Publication Date: 2021-07-16
SHANDONG ZHONGSEN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, increasing the amount of cementitious material will lead to a significant increase in the cost of concrete, and the increase in the amount of cementitious material will lead to obvious cracking and poor durability of the concrete, and the slow growth rate of strength in the later period

Method used

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  • A functional regulator for concrete composite fine aggregate and its preparation method
  • A functional regulator for concrete composite fine aggregate and its preparation method

Examples

Experimental program
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Effect test

preparation example Construction

[0055] The present application also provides a method for preparing the above-mentioned functional regulator for concrete composite fine aggregate, comprising the following steps in sequence:

[0056] 1) Prepare a viscosity-reducing regulator according to the formula; prepare an alcohol-amine mixed solution according to the formula;

[0057] 2) Weigh the viscosity-reducing regulator, water-reducing agent, alcohol-amine mixed solution and water according to the formula, and set aside;

[0058] 3) First add the viscosity reducing regulator into the water and stir to mix evenly, then add the water reducing agent and stir to mix evenly, then add the alcohol-amine mixture and stir to mix evenly until the solution is uniform to obtain the finished functional regulator.

[0059] The function and effect of each compound raw material in the formula of this application:

[0060] Viscosity-reducing regulator: acrylamide is used to disperse fine particles in concrete; methacrylic acid pr...

Embodiment 1

[0065] A functional regulator for concrete composite fine aggregate, the functional regulator is formed by mixing various raw materials, and the raw materials of the functional regulator include a viscosity-reducing regulator, a water reducing agent, an alcohol-amine mixed solution and water;

[0066] Wherein, the mass percentage of the added mass of the viscosity-reducing regulator accounted for the described functional regulator of the finished product is 4%;

[0067] The added mass of the water reducer accounts for 25% of the mass percentage of the functional modifier of the finished product;

[0068] The mass percentage of the added quality of the alcohol-amine mixed solution accounted for the functional modifier of the finished product is 3%;

[0069] The added quality of the water in the functional regulator is the balance in the functional regulator of the finished product except all other raw materials;

[0070] The water reducer is a slump-preserving polycarboxylate...

Embodiment 2

[0083] The functional regulator prepared in Example 1 was prepared as a concrete sample according to the concrete formulation in Example 2 in Table 1, and the performance test results of the prepared concrete sample are shown in Table 1.

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Abstract

The application provides a functional regulator for concrete composite fine aggregate. The raw materials of the functional regulator include a viscosity-reducing regulator, a water reducer, an alcohol-amine mixed solution, and water; wherein the raw material of the viscosity-reducing regulator includes propylene Amide, methacrylic acid, silane coupling agent, polyethylene glycol methyl ether and water; wherein the raw materials of the alcohol-amine mixed solution include triethanolamine, diethanol monoisopropanolamine, hydroxypropyl methylcellulose and water; The present application also provides a preparation method of the above-mentioned functional regulator; compared with traditional construction, adding the functional regulator and removing the admixture reduces the amount of cement and increases the amount of aggregate to ensure that the total quality of the concrete remains unchanged and the concrete The working performance and strength have met the requirements, and the strength has also been improved while reducing the cost and simplifying the concrete preparation operation; in summary, this functional regulator can solve the defect of poor homogeneity of concrete after using composite fine aggregate .

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a functional regulator for concrete composite fine aggregate and a preparation method thereof. Background technique [0002] With the depletion of natural river sand, the natural fine aggregate used in concrete is less and less, and the artificial fine aggregate (also called artificial sand, including machine-made sand, detritus sand, washed sand) used in concrete is getting more and more However, machine-made sand, detrital sand, and washed sand have relatively serious problems of broken gradation and irregular grain shape, especially for sand produced by the washing process, the problem of broken gradation is more obvious. [0003] As the current supply of natural fine aggregates is getting tighter and tighter, those skilled in the art have developed a technology that uses materials such as lithium slag, titanium gypsum or iron tailings to be mixed with artificial sand to prep...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/42
Inventor 郭文倩岳光亮于吉涛彭立刚唐樱燕
Owner SHANDONG ZHONGSEN TECH