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Function regulator for concrete composite fine aggregate and preparation method thereof

A conditioner and fine aggregate technology, applied in the field of concrete, can solve the problems of slow strength growth rate, increase in concrete cost, concrete cracking, etc., achieve the effect of improving work performance and strength, solving fine aggregate sinking, and reducing dosage

Active Publication Date: 2019-05-28
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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  • Function regulator for concrete composite fine aggregate and preparation method thereof
  • Function regulator for concrete composite fine aggregate and preparation method thereof

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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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PUM

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Abstract

The invention provides a function regulator for concrete composite fine aggregate. The function regulator is prepared from raw materials including a viscosity reducing regulator, a water reducing agent, an alcohol amine type mixed solution and water, wherein the viscosity reducing regulator is prepared from raw materials including acrylamide, methacrylic acid, a silane coupling agent, polyethyleneglycol methyl ether and water; the alcohol amine type mixed solution is prepared from raw materials including triethanolamine, diethanolisopropanolamine, hydroxypropyl methylcellulose and water; theinvention further provides a preparation method of the function regulator; compared with traditional construction, the function regulator is added, an additive is removed, the dosage of cement is reduced and the dosage of the aggregate is increased; the total mass of concrete is not changed, and the working performance and strength of the concrete meet the requirements; the cost is reduced, the preparation operation of the concrete is simplified and the strength is also improved. To sum up, the defect that the homogeneity is poor after the concrete containing the composite fine aggregate is used can be solved through the function regulator.

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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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