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Liquid cement grinding aid and its preparation method and application method

A grinding aid enhancer and cement technology, applied in the field of cement additives, can solve the problem of small contribution to the strength of cement in the later stage, and achieve the effects of reducing electrostatic adsorption, improving workability, and reasonable particle gradation

Active Publication Date: 2017-08-11
HANGZHOU LIPING IND & TRADE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The study found that this grinding aid can improve the early strength of cement, but has little contribution to the later strength of cement

Method used

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  • Liquid cement grinding aid and its preparation method and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Take 2 parts of molasses (based on converted sugar, the total sugar content is 40wt%), 2 parts of PEO-b-PPO (the degree of polymerization of PEO is 10-15, and the degree of polymerization of PPO is 150-160), 3 parts of humic sodium naphthalene sulfonate (particle size: 80-120 mesh), 2 parts of naphthalenesulfonate formaldehyde polymer and 15 parts of water, stir and mix evenly to obtain S1 mixed solution; add 50 parts of triethanolamine and 5 parts of glycerin to the S1 mixed solution and 35 parts of water, stirred and mixed uniformly to obtain the liquid cement grinding aid enhancer of the present invention. Before the liquid cement grinding aid enhancer is added to the cement grinding process of cement products, the mass ratio of the liquid cement grinding aid enhancer to the cement product is 0.01% to 0.03%.

Embodiment 2

[0035]Take 5 parts of molasses (based on converted sugar, the total sugar content is 50wt%), 5 parts of PEO-b-PPO (the degree of polymerization of PEO is 35-40, and the degree of polymerization of PPO is 180-200), 5 parts of humic sodium naphthalene sulfonate (particle size: 80-120 mesh), 5 parts of naphthalenesulfonate formaldehyde polymer and 30 parts of water, stir and mix evenly to obtain S1 mixed solution; add 60 parts of triethanolamine, 10 parts of glycerin and 50 parts of water, stirred and mixed evenly to obtain the liquid cement grinding aid enhancer of the present invention. Before the liquid cement grinding aid enhancer is added to the cement grinding process of cement products, the mass ratio of the liquid cement grinding aid enhancer to the cement product is 0.01% to 0.03%.

Embodiment 3

[0037] Take 0.1 part of molasses (based on the amount of converted sugar, the total sugar content is 30wt%), 0.1 part of PEO-b-PPO (the degree of polymerization of PEO is 4, and the degree of polymerization of PPO is 80-90), 0.1 part of sodium humate (particle size is 80-120 mesh), 1 part of naphthalenesulfonate formaldehyde polymer and 10 parts of water, stir and mix evenly to obtain S1 mixed solution; add 40 parts of triethanolamine, 1 part of glycerin and 20 parts of S1 mixed solution part of water, stirred and mixed evenly to obtain the liquid cement grinding aid enhancer of the present invention. Before the liquid cement grinding aid enhancer is added to the cement grinding process of cement products, the mass ratio of the liquid cement grinding aid enhancer to the cement product is 0.01% to 0.03%.

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Abstract

The invention discloses a liquid cement aid grinding reinforcing agent and a preparation method and application method thereof. The liquid cement aid grinding reinforcing agent is prepared from, by weight, 40-60 parts of triethanolamine, 0.1-5 parts of molasses, 1-10 parts of glycerinum, 0.1-5 parts of amphoteric polymers, 0.1-5 parts of sodium humate and 30-80 parts of water; PEO-b-PPO is adopted as the amphoteric polymers. According to the liquid cement aid grinding reinforcing agent, the early strength and later strength of cement which is added with the liquid cement aid grinding reinforcing agent after powder grinding is performed are both improved.

Description

technical field [0001] The invention relates to the field of cement additives, more specifically, it relates to a liquid cement grinding aid and its preparation method and application method. Background technique [0002] Contains CaO, SiO in cement 2 、Al 2 o 3 and Fe 2 o 3 And other chemical composition, its main mineral composition is 3CaO SiO 2 , 2CaO SiO 2 、3CaO·Al 2 o 3 and 4CaO·Al 2 o 3 · Fe 2 o 3 . Cement grinding is an important process in cement production. It grinds materials such as cement clinker, retarder and performance adjustment materials to a suitable particle size by mechanical means, so as to meet the coagulation and hardening requirements of cement paste. In order to improve the grindability of cement and increase the activity of cement, cement grinding aids are generally added to cement. [0003] Commercially available liquid grinding aids are mostly based on triethanolamine. For example, the authorized public number is CN103288373B Chines...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/32C04B103/52
Inventor 陈礼平
Owner HANGZHOU LIPING IND & TRADE CO LTD
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