Application of ultrasonic testing to describe the hydration of calcium aluminate cement at the early age

被引：115

作者：

Chotard, T ^{[1
]}

Gimet-Breart, N ^{[1
]}

Smith, A ^{[1
]}

Fargeot, D ^{[1
]}

Bonnet, JP ^{[1
]}

Gault, C ^{[1
]}

机构：

[1] Ecole Natl Ceram Ind, Grp Etud Mat Heterogenes, F-87065 Limoges, France

来源：

CEMENT AND CONCRETE RESEARCH | 2001年 / 31卷 / 03期

关键词：

hydration; calcium aluminate cement; ultrasonic measurement; mechanical properties;

D O I：

10.1016/S0008-8846(00)00446-4

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Nondestructive and in situ characterisation techniques, such as ultrasonic measurements, permit to follow cement hydration at the early age from a few minutes to a few hours after mixing. The technique reported in this paper is based on measurements in reflection modes. Results concerning an aluminous cement, Secar71, are presented (water-to-cement weight ratio (WIC): 0.3 and 0.4; temperature of measurement: 20 degreesC; duration: 0-24 h). Information deduced from ultrasonic measurements (longitudinal wave velocity, reflection coefficient) associated with other data obtained from X-ray diffraction (XRD), differential thermal analysis (DTA) and thermogravimetric (TG) measurements enable to propose a qualitative description of hydration's chronology. The sensitivity of these ultrasonic parameters to hydrates formation and structuring is underlined. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：405 / 412

页数：8

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