Influence of environmental temperature and moisture content of aggregates on the workability of cement mortar

被引：12
作者：
Ortiz, J. [1 ]
Aguado, A. [2 ]
Agullo, L. [2 ]
Garcia, T. [2 ]
Zermeno, M. [1 ]
机构：
[1] Autonomous Univ Aguascalientes, Dept Construct & Struct, Aguascalientes 20100, Mexico
[2] UPC, Tech Univ Catalonia, Sch Civil Engn Barcelona, Barcelona 08034, Spain
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2009年 / 23卷 / 05期
关键词：
Aggregates; Environmental temperature; Moisture content; Workability; Mortar; Optimization; COMPRESSIVE STRENGTH; WEATHER; HOT;
D O I：
10.1016/j.conbuildmat.2008.09.016
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this experimental work, which is aimed at a subsequent industrial application, the results of a study of the effects of environmental temperatures on aggregate's properties and on the resulting mortar workability are presented. For this work, several physical properties of fine aggregates (sand of 5 and 2 mm) were defined, in order to establish the influence of temperature on their performance and on the resulting mortar's workability. In this study, three climatic conditions were used: reference, hot weather and cold weather conditions, both in terms of temperature and relative humidity. The results show that mortar workability is a function of the temperature of the aggregates and of their physical properties, such as absorption and friction; in general, the best results are attained under the reference conditions (20 degrees C). These results may be useful for the optimization tools development in ready-mix concrete production. (c) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1808 / 1814
页数：7
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