(中文)再生骨料参量在生产过程中对混凝土性能的影响（有）.pdf

Cement Concrete Composites 29 (2007) 397–401 /locate/cemconcomp Mechanical behaviour of concrete made with fine recycled concrete aggregates L. Evangelista a, J. de Brito b,* a Instituto Superior de Engenharia de Lisboa, R. Conselheiro Emı´dio Navarro, 1, 1950-062 Lisboa, Portugal b ´ Instituto Superior Tecnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal Received 28 December 2005; received in revised form 14 December 2006; accepted 15 December 2006 Available online 10 January 2007 Abstract This paper concerns the use of fine recycled concrete aggregates to partially or globally replace natural fine aggregates (sand) in the production of structural concrete. To evaluate the viability of this process, an experimental campaign was implemented in order to mon- itor the mechanical behaviour of such concrete. The results of the following tests are reported: compressive strength, split tensile strength, modulus of elasticity and abrasion resistance. From these results, it is reasonable to assume that the use of fine recycled concrete aggre- gates does not jeopardize the mechanical properties of concrete, for replacement ratios up to 30%. 2007 Elsevier Ltd. All rights reserved. Keywords: Sustainable construction; Concrete waste; Fine recycled aggregates; Structural concrete 1. Introduction and superplasticizers were used, has produced results that