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Cement modifier

A technology of conditioner and cement, applied in the field of cement conditioner

Inactive Publication Date: 2013-06-19
SHENZHEN GREENSTONE MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] An object of the present invention is to provide a low-cost, excellent performance and comprehensive functions to solve the problems of high cost and incomplete functions of the existing cement conditioners mentioned above. cement conditioner

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Based on 100kg of product, it contains 1kg of cellulose ether, 6kg of fiber, 12kg of cross-linked polyacrylate, 8kg of vinyl acetate, 12kg of ethoxylated alkyl sodium sulfide, and the rest is diatomaceous earth. The mortar formula is as follows: In terms of mass: water: cement: sand: cement regulator = 0.48:1:3:0.01 Using the regulator of this formula, the degree of mortar layering can be reduced to below 18mm, and the water retention rate is 80%, which improves the quality of the mortar. Frost resistance, reduce the shrinkage rate of mortar, 30d compressive strength 13MPa, 30d bond strength 0.4MPa, frost resistance: 30d mass loss 3%, strength loss 18%, 30d shrinkage rate 0.4%; setting time 5 hours; and The performance of the mortar is greatly improved by adopting the preferred formula of the present invention.

Embodiment 2

[0025] Based on 100kg product, it contains 1.2% cellulose ether, 8.8% fiber, 10% cross-linked polyacrylate, 10% vinyl acetate, 10% ethoxylated alkyl sodium sulfide, 10% fly ash and the rest is diatoms earth. The mortar formula is as follows: by mass: water: cement: sand: cement modifier = 0.45:1:3:0.01. Using the regulator of this formula, the degree of delamination of the mortar can be reduced to 15mm, the water retention rate can be more than 85%, the frost resistance of the mortar can be improved, and the shrinkage rate of the mortar can be reduced. Performance: 30d mass loss of 2%, strength loss of 15%, 30d shrinkage rate of 0.3%; setting time of 4 hours; and the use of the preferred formula of the present invention greatly improves the performance of the mortar.

Embodiment 3-11

[0027] The mortar formula is as follows: by mass: water: cement: sand: cement modifier = 0.5:1:3:0.01.

[0028] The formulas of each embodiment are as follows, and the measured data are as follows.

[0029] Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 Example 11 carboxymethyl cellulose 0.5 1 1.5 2 0.8 1.2 1.8 1.4 1.6 fiber 5 8 7.5 6 9 10 7.2 6.6 8.4 cross-linked polyacrylate 5 10 15 12 8.2 11 8 7 9 vinyl acetate 5 7 11 10 12 8.8 14 9 15 Sodium Ethoxylated Alkyl Sulfide 0 15 10 12 11 8 7 6 5 fly ash 0 10 8 5 12 0 0 15 0 diatomite 84.5 49 47 53 47 61 62 55 61 coagulation time h 5.2 5.4 5.6 5.8 6 4.2 4.6 4.8 5 Reduce heat...

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PUM

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Abstract

The invention relates to the field of building materials, in particular to a cement modifier, solving the problem that the existing cement modifiers have high cost and incomplete functions. The cement modifier has low cost, excellent performances and complete functions and comprises the following substances by mass percent: 0.5-2% of cellulose ether, 5-10% of fibers, 5-15% of crosslinked polyacrylate, 5-15% of vinyl acetate and the balance of diatomite. The modifier has the beneficial effects of improving the frost resistance, increasing the strength and reducing the shrinkage and is suitablefor popularization and application.

Description

technical field [0001] The invention relates to the field of building materials, and relates to a cement conditioner. Background technique [0002] Because the design strength level of building mortar is generally low, the amount of cement used in the production is small, and most of the materials are yellow sand. Although the strength of the mortar can meet the requirements, its workability, water retention and construction performance are quite poor. Afterwards, it is easy to crack, even bulge and peel off, which seriously affects the construction quality. In order to improve the workability of construction mortar, the measure of adding lime paste has been generally adopted in construction projects for a long time, although the workability of mortar has been improved to a certain extent. and workability, but it has adverse effects on the water resistance of the mortar, and does not improve the cracking resistance of the mortar. Although the use of microfoam can also improv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/38
Inventor 黄伟校
Owner SHENZHEN GREENSTONE MATERIAL TECH CO LTD
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