期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 23, 期 8, 页码 2869-2876出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2009.02.004
关键词
Durability; Fine recycled aggregate; Fly ash; Pull-out strength; Shrinkage; Recycled aggregate; Supplementary cementing materials; Sustainability
A judicious use of resources, by using by-products and waste materials, and a lower environmental impact, by reducing carbon dioxide emission and virgin aggregate extraction, allow to approach sustainable building development. Recycled aggregate concrete (RAC) containing supplementary cementitious materials (SCM), if satisfactory concrete properties are achieved, can be an example of such sustainable construction materials. In this work concrete specimens were manufactured by completely replacing fine and coarse aggregates with recycled aggregates from a rubble recycling plant. Also RAC with fly ash (RA + FA) or silica fume (RA + SF) were studied. Concrete properties were evaluated by means of compressive strength and modulus of elasticity in the first experimental part. In the second experimental part, compressive and tensile splitting strength, dynamic modulus of elasticity, drying shrinkage, reinforcing bond strength, carbonation, chloride penetration were studied. Satisfactory concrete properties can be developed with recycled fine and coarse aggregates with proper selection and proportioning of the concrete materials. (C) 2009 Elsevier Ltd. All rights reserved.
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