Study On Structure And Performance Of Cement Grinding Aids

The content and results of this study are as follows:(1) Acetic acid, methacrylic acid, bitter, maleic anhydride, oxalic acid andtriethanolamine reaction were synthesized by the Z1, Z2, Z3, Z4, Z5. This paperstudies the esterification reaction temperature, catalyst selection, Ultimatelydetermine the ideal conditions: Reaction temperature of110℃～120℃, Thechoice of catalysts for the phosphite, p-toluenesulfonic acid and the incorporationof1.5%, And triethanolamine compounds Infrared Spectroscopy analysis.(2) Research triethanolamine (Z0), Triethanolamine compounds (Z1～Z5)grinding performance, Obtained Triethanolamine compounds to improve cementgrinding effect. To determine the optimum grinding time is25min and the bestdosage, Z0, Z1, Z4. Z5incorporation of0.01%, The incorporation of Z2, Z3is0.03%.(3) Through research triethanolamine, Triethanolamine compounds grindingparticle size distribution curve, Studies Triethanolamine compounds optimizedthe cement particle size distribution, As Z1, Z4, Z5content in the0-32μm in morethan80%.(4) By Bending, compression, and SEM images, The promotion ofhydration of the cement further draw Triethanolamine compounds, Which the Z1,Z4, Z5to improve the early and late strength of the cement, Cement hydrationproducts, and cement paste is dense and solid. (5) From a structural point of view on the performance impact, Explore thegrinding mechanism, Analysis of the different molecular structure, Impact onperformance, The results showed that: Triethanolamine synthesized compoundshave better grinding effect,and the shorter the chain, the smaller molecular weight,with grinding effect greater the number of polar functional groups, the better theeffect of cement grinding.(6) Study on by double-doped cement grinding aids and superplasticizercement paste fluidity, Relatively good adaptability to come to the cementgrinding aids and polycarboxylate superplasticizer, By the time loss of less.(7) Ordinary portland cement, slag cement, fly ash cement as raw materials,Through the double-doped cement grinding aids and superplasticizer cementmortar fluidity, Better adaptability to the obtained cement grinding aids and slagcement.(8) cement grinding aids Coagulator and enhancer of adaptive test, obtainedcement grinding aids promote the hydration of the cement, Shorter setting time,Improve the early and late strength of the cement, But generally speaking, theeffect is not large, Does not have an impact on the nature of the cement.Incorporation in the study less Triethanolamine compounds, Meet or exceedthe performance of triethanolamine, Provide technical support for the industrialproduction of cement grinding aids.