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Cement grinding aid and its preparation method and application method

A cement grinding aid and molasses technology, applied in the field of cement additives, can solve problems affecting the service life of buildings, water and soil pollution, steel corrosion, etc., achieve reasonable particle gradation and distribution, enhance comprehensive performance, and ensure grinding aid effect. Effect

Active Publication Date: 2017-06-13
HANGZHOU LIPING IND & TRADE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this cement grinding aid can improve the distribution of cement particles and stimulate the hydration power to increase the early strength and later strength of cement, it contains a considerable amount of sodium chloride, which is easy to cause corrosion of steel bars and affect the service life of buildings; At the same time, it also contains urea, which is likely to cause water and soil pollution; the sodium thiosulfate it contains may form ettringite in the later stage, which will eventually cause volume expansion and damage the building

Method used

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  • Cement grinding aid and its preparation method and application method
  • Cement grinding aid and its preparation method and application method
  • Cement grinding aid and its preparation method and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Get 1 part of sodium gluconate, 1 part of glucosamine sulfate potassium salt, 5 parts of n-propanol and 40 parts of water, stir and mix evenly to obtain the S1 mixture; get 5 parts of triethanolamine and 5 parts of molasses (in terms of converted sugar, its The total sugar content is 40%wt) and 60 parts of water, stir and mix uniformly to obtain the S2 mixture; add the S1 mixture to the S2 mixture, stir and mix uniformly to obtain the cement grinding aid of the present invention. Before the cement grinding aid is added to the cement grinding process of the cement product, the mass ratio of the cement grinding aid to the cement product is 0.1% to 0.2%.

Embodiment 2

[0038]Get 2 parts of sodium gluconate, 4 parts of glucosamine sulfate potassium salt, 8 parts of ethanol and 40 parts of water, stir and mix evenly to obtain the S1 mixture; get 8 parts of triethanolamine, 10 parts of molasses (in terms of converted sugar, the total The amount of sugar is 50%wt) and 45 parts of water, stir and mix uniformly to obtain the S2 mixture; add the S1 mixture to the S2 mixture, stir and mix uniformly to obtain the cement grinding aid of the present invention. Before the cement grinding aid is added to the cement grinding process of the cement product, the mass ratio of the cement grinding aid to the cement product is 0.1% to 0.2%.

Embodiment 3

[0040] Take 2 parts of sodium gluconate, 5 parts of glucosamine sulfate potassium salt, 10 parts of methanol and 30 parts of water, stir and mix evenly to obtain the S1 mixture; additionally get 10 parts of triethanolamine and 13 parts of molasses (in terms of converted sugar, the total The amount of sugar is 30%wt) and 40 parts of water, stir and mix uniformly to obtain the S2 mixture; add the S1 mixture to the S2 mixture, stir and mix uniformly to obtain the cement grinding aid of the present invention. Before the cement grinding aid is added to the cement grinding process of the cement product, the mass ratio of the cement grinding aid to the cement product is 0.1% to 0.2%.

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PUM

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Abstract

The invention discloses a cement grinding aid as well as a preparation method and an application method thereof. The cement grinding aid comprises the following raw materials in parts by weight: 5-15 parts of triethanolamine, 5-20 parts of honey, 1-5 parts of sodium gluconate, 1-5 parts of N-sulfo-glucosamine potassium salt, 5-10 parts of C1-C3 alcohol and 40-100 parts of water. The invention aims to provide the cement grinding aid that the grain composition of cement added with the cement grinding aid is reasonable after powdering, the fineness of cement is appropriately reduced, the strength of grinded cement can be improved, and the comprehensive effect is relatively good.

Description

technical field [0001] The invention relates to the field of cement additives, more specifically, it relates to a 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. Choosing the right cement grinding aid can greatly improve the efficiency of cement grinding, reduce power consumption, and thus improve the economic benefits of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/16C04B24/26C04B103/52C04B103/30
Inventor 陈礼平
Owner HANGZHOU LIPING IND & TRADE CO LTD
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