Properties of high-performance LWAC for precast structures with Brazilian lightweight aggregates

被引：106
作者：
Rossignolo, JA
Agnesini, MVC
Morais, JA
机构：
[1] Univ Sao Paulo, Dept Sci & Engn Mat, BR-13560970 Sao Carlos, SP, Brazil
[2] Univ Sao Paulo, Sao Carlos Engn Sch, Dept Architecture & Urbanism, BR-13560970 Sao Carlos, SP, Brazil
来源：
CEMENT & CONCRETE COMPOSITES | 2003年 / 25卷 / 01期
基金：
巴西圣保罗研究基金会;
关键词：
lightweight aggregate concrete; high performance; properties; expanded clay;
D O I：
10.1016/S0958-9465(01)00046-4
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
An experimental study was carried out to examine five mixtures made with selected Brazilian lightweight aggregates in order to produce lightweight aggregate concrete (LWAC) for slim precast components. Flow (initial and after 2 h), air content, compressive strength, tensile strength (flexural and splitting), modulus of elasticity and deformation were studied. The 7-day compressive strength and the dry concrete density varied from 39.7 to 51.9 MPa and from 1460 to 1605 kg/ml, respectively. The results of this pilot study suggest that there are possibilities of producing slim precast components using high-performance lightweight concrete with Brazilian lightweight aggregates. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：77 / 82
页数：6
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