Alite-ye'elimite clinker: Hydration kinetics, products and microstructure

被引：14

作者：

Ma, Suhua ^{[1
]}

Snellings, Ruben ^{[2
,3
]}

Li, Xuerun ^{[1
,3
]}

Shen, Xiaodong ^{[1
]}

Scrivener, Karen L. ^{[3
]}

机构：

[1] Nanjing Tech Univ, Coll Mat Sci & Engn, 30 Puzhu South Rd, Nanjing 210009, Peoples R China

[2] VITO, Sustainable Mat Management, Boeretang 200, B-2400 Mol, Belgium

[3] Ecole Polytech Fed Lausanne, Lab Construct Mat, Inst Mat, Stn 12, CH-1015 Ecublens, Switzerland

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2021年 / 266卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Ye'elimite; Alite; Hydration kinetics; Hydration products; Microstructure; PORTLAND-CEMENT;

D O I：

10.1016/j.conbuildmat.2020.121062

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents the hydration kinetics, products and microstructure of an alite-ye'elimite clinker containing 4 wt% of ye'elimite to boost the early strength development. Isothermal calorimetry, X-ray diffraction, backscattered scanning electron microscopy and mercury intrusion porosimetry were used to study the hydration processes. The results showed that the ye'elimite phase hydrated very rapidly, before the main hydration of alite, forming ettringite as main hydration product. The ye'elimite hydration products precipitated throughout the pore space and reduced the microporosity of the hardened paste at early age. The presence of ye'elimite strongly affected the early hydration before 24 h of hydration, but did not show a significant effect on the hydration kinetics or products at later ages. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：10

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