International Journal of Advanced Science and Technology Vol.77 (2015), pp.7-24 http://dx.doi.org/10.14257/ijast.2015.77.02 ISSN: 2005-4238 IJAST Copyright ⓒ 2015 SERSC Recycling Concrete Debris from Construction and Demolition Waste Tomas U. Ganiron Jr College of Architecture, Qassim University, Buraidah City Asia-Pacific Chemical, Biological& Environmental Engineering Society, Hongkong tomasuganironjr@gmail.com Abstract Recycling of concrete debris can make a contribution to reduce the total environmental impact of the building sector. To increase the scope for recycling in the future, aspects of recycling have to be included in the design phase. Besides, aggregate sources near Metro Manila are almost depleted, so aggregates have to be brought from far quarries. Consequently, reclaiming aggregates from concrete debris would lead to environmental and economic benefits. This experimental study aimed to use crushed concrete debris as alternative fine aggregate in a mortar mixture. A conventional mortar mixture will be compared to concrete debris mixture of the same proportions. Keywords: Aggregate, concrete debris, construction material, mortar mixture, recycled waste 1. Introduction Recycling as part of environmental considerations has become a common feature in the construction industry. Construction and demolition (C&D) debris is the waste material that results from the construction, renovation, or demolition of any structure, including buildings, roads, and bridges. Typical waste components include Portland cement concrete, asphalt concrete, wood, drywall, asphalt shingles, metal, cardboard, plastic, and soil. This waste material has only recently gained attention as concerns about its environmental impact have developed. One of the things builders, developers and contractors must consider during construction, renovation or demolition is where to put all the debris. As what most people do in the preservation of the environment and for economic purposes, studies, researches and experiments are being done to discover new ways on how to find solution considering where else to put these debris and what can be done to lessen its disposal to landfills and since there is an increasing environmental problem regarding the waste disposal to landfills, it is necessary to think of possible ways on how to avoid these problems and at the same time secure safety and convenience, and that is, to recycle. To fully understand the environmental implications of C&D debris, it is important to understand the size of the C&D debris stream. The exact quantity of C&D debris generated in the US is currently unknown. Many states do not track the amount of C&D debris disposed of or recycled. Some states do collect this data from landfills and recycling facilities, but some facilities do not have scales and report only converted volume estimates [1, 22]. Methodologies have been developed to estimate how much C&D debris is generated, generally applying average waste generation per unit area amounts to total area of construction, renovation, or demolition activity. Few other types of national C&D debris estimations have been performed to find a better method or to contrast against the current estimations. A materials flow analysis is routinely used to