Use of Recycled Sand Produced at Construction Sites in Bedding Mortars
Publication: Journal of Materials in Civil Engineering
Volume 25, Issue 2
Abstract
The aim of this paper is to present a proposal for the recycling of construction and demolition waste (CDW) at construction sites and the use of recycled sand in bedding mortar. Three samples of CDW were collected at construction sites from the city of Recife, Brazil and milled in a hammer mill. The following properties of the recycled sands were analyzed: water absorption, material finer than 75 μm, bulk density, fineness modulus, and the presence of contaminants. Mortars were produced with different amounts of cement and replaced the natural material by recycled aggregate in proportions of 50, 75 and 100%. These mortars were characterized for compressive strength, fresh mortar density, and consistence. Masonry prisms with three ceramic blocks were produced for analyzing the bending and shear strength. Several correlations between the properties of aggregates, mortar, and prisms were obtained, leading the authors to propose a recycling process, dosage, and quality control methodology for bedding mortars prepared with recycled sand at construction sites.
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Acknowledgments
The authors extend thanks to CNPq for the research financial support, to the student Elaine C. R. Silva, to the technicians Ezequiel and Cazuza (of the UFPE Laboratory of Construction Material), to the technicians Antonio e Severino (of the UFPE Laboratory of Soils), to the UFPE Department of Civil Engineering, to the UFPE Laboratory of Mechanics, and especially to professor Armando Shinohara, the student Cidrak, and the construction companies Romarco and Pernambuco (from Recife) for partnership in this research.
References
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 25 • Issue 2 • February 2013
Pages: 236 - 242
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Aug 28, 2011
Accepted: May 24, 2012
Published online: May 29, 2012
Published in print: Feb 1, 2013
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