Time-dependent behaviour of structural concrete made with recycled coarse aggregates. Creep and shrinkage

被引：101

作者：

Seara-Paz, Sindy ^{[1
]}

Gonzalez-Fonteboa, Belen ^{[2
]}

Martinez-Abella, Fernando ^{[2
]}

Gonzalez-Taboada, Iris ^{[2
]}

机构：

[1] Univ A Coruna, Dept Construct Technol, EU Arquitectura Tecn, Campus Zapateira S-N, La Coruna 15071, Spain

[2] Univ A Coruna, Dept Construct Technol, ETSI Caminos, Campus Elvina S-N, La Coruna 15071, Spain

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2016年 / 122卷

关键词：

Recycled concrete; Structural concrete; Shrinkage; Creep; Creep coefficient; Specific creep; Internal curing; HIGH-PERFORMANCE CONCRETE; MECHANICAL-PROPERTIES; AUTOGENOUS SHRINKAGE; ATTACHED MORTAR; DEFORMATION; PREDICTION; STRENGTH;

D O I：

10.1016/j.conbuildmat.2016.06.050

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This work is focused on studying the time-dependent properties of recycled concrete, especially shrinkage and creep behaviour. For said purpose, two series of concretes (water to cement ratios of 0.50 and 0.65) were designed with different replacement percentages of recycled coarse aggregate (0%, 20%, 50% and 100%). The experimental program consisted of studying basic properties and time-dependent shrinkage and creep up to 1000 days. The results showed that shrinkage and creep strains increase with the replacement percentage, and the use of pre-saturated recycled aggregates leads to different time-dependent development of shrinkage and creep strains at early ages due to the internal curing effect. Finally, a function to predict recycled concrete shrinkage and creep coefficients was adjusted according to the content of recycled aggregates and concrete age. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：95 / 109

页数：15

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