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Retarding-type cement grinding aid

A cement grinding aid and retarding technology, which is applied in the field of cement admixtures, can solve the problems of high cost, poor retarder effect, single function, etc., achieve reduced grinding energy consumption, good retarding effect, and benefit Anti-admixture effect

Inactive Publication Date: 2016-11-09
GUILIN HUAYUE ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, molasses and sucrose are commonly used as retarding cement grinding aids in the market. The existing retarders have poor effect, single function and high cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A retarding cement grinding aid, made of the following raw materials in parts by weight: 28 parts of triethanolamine, 12 parts of diethanol monoisopropanolamine, 8 parts of sodium tartrate, 5 parts of coconut acid diethanolamide, gluconic acid 16 parts of sodium, 14 parts of polyaspartic acid, and 70 parts of water; mix all the raw materials and stir at 45°C for 45 minutes to obtain the product.

Embodiment 2

[0021] A retarding cement grinding aid, made of the following raw materials in parts by weight: 20 parts of triethanolamine, 21 parts of diethanol monoisopropanolamine, 4 parts of sodium tartrate, 14 parts of coconut acid diethanolamide, gluconic acid 10 parts of sodium, 12 parts of polyaspartic acid, and 55 parts of water; mix all the raw materials and stir at 50°C for 40 minutes to obtain the product.

Embodiment 3

[0023] A retarding cement grinding aid, made of the following raw materials in parts by weight: 23 parts of triethanolamine, 18 parts of diethanol monoisopropanolamine, 5 parts of sodium tartrate, 11 parts of coconut acid diethanolamide, gluconic acid 12 parts of sodium, 10 parts of polyaspartic acid, and 60 parts of water; mix all the raw materials and stir at 55°C for 35 minutes to obtain the product.

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PUM

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Abstract

The invention relates to the technical field of cement additives, particularly a retarding-type cement grinding aid. The retarding-type cement grinding aid is prepared from the following raw materials in parts by weight: 18-28 parts of triethanolamine, 12-24 parts of diethanolisopropanolamine, 2-8 parts of sodium tartrate, 5-17 parts of coco fatty acid diethanol amide, 8-16 parts of sodium gluconate, 6-14 parts of polyaspartic acid and 50-70 parts of water. The retarding-type cement grinding aid has favorable retarding effect, can enhance the early strength and later strength of cement, and is beneficial to enhancing the impermeability and freeze-thaw resistance of hardened concrete.

Description

technical field [0001] The invention relates to the technical field of cement admixtures, in particular to a retarding cement grinding aid. Background technique [0002] Retarding cement grinding aids are mainly used for concrete constructed in hot climates, large-volume concrete, and cement concrete that needs to be parked or transported for a long time. The chemical components of retarded cement grinding aids mainly include: hydroxycarboxylic acids - tartaric acid and its salts, polyhydroxy carbohydrates - sugars and their derivatives, molasses and its modifications, etc., lignosulfonates , inorganic compounds, humic acid water reducers, etc. Retarding cement grinding aid can prolong the setting time of concrete, make fresh cement concrete maintain plasticity for a long time, which is conducive to pouring and improving construction quality, inhibits the rate of heat release of hydration, slows down the rate of heat release and reduces the The initial heat of hydration pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/28C04B103/52
CPCC04B40/0039C04B2103/52
Inventor 王恒尹丹黄煌陈威阮长泰欧鹏谢体云
Owner GUILIN HUAYUE ENVIRONMENTAL PROTECTION TECH CO LTD
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