三乙醇胺助磨剂对水泥与聚羧酸系减水剂适应性的影响及其机理

doi:10.11896/j.issn.1005-023X.2018.04.027

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Abstract This paper studied the effect of triethanolamine (TEA) used as grinding aid on the physical properties of cement. The fluidity and fluidity loss of cement pastes mixed with polycarboxylate superplasticizer (PCE) were measured. And the grinding aid mechanism and the influence mechanism of TEA to the adaptability of cement and PCE were studied by testing the adsorption capacity of PCE, the temperature rise curves of cement hydration, the dissolution capacity of TEA and the surface property of cement particles. Results showed that with its dosage between 0%—0.02%, the addition of TEA could improve the particle size distribution of cement and thus the compatibility between cement and superplasticizer. While the adsorption capacity of PCE declined, the tempe-rature of cement hydration accelerated, and TEA showed obviously negative influence on the compatibility between cement and superplasticizer.

Key words： triethanolamine portland cement polycarboxylate superplasticizer grinding aid

Published: 25 February 2018

CLC number:

TU528.042

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	Articles by authors
	TANG Xiaobo
	SUN Zhenping
	LIU Yi

Cite this article:

TANG Xiaobo,SUN Zhenping,LIU Yi. Influence of Triethanolamine Grinding Aid on the Compatibility Between Cement and Polycarboxylate Superplasticizer and Its Mechanism[J]. Materials Reports, 2018, 32(4): 641-645.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.04.027 OR http://www.mater-rep.com/EN/Y2018/V32/I4/641

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