Most of developing countries including Ethiopia, proceeding in the hopeful progress in construction methods in terms of addressing such a problem. Keywords: - Construction and Demolition Waste, Recycled masonry blockĬurrently there has been potential need of housing due to high rate of population in worldwide. Present work addresses casting, testing and compare the performance of Recycled Masonry blocks produced from Concrete waste. Clay bricks, Concrete bricks etc.) is not utilized fully, hence there is scope of making masonry blocks from Construction and Demolition wastes for Eco-friendly and economical construction. The strength required for blocks used for construction masonry walls especially in framed structure is very much less and hence strength of conventional blocks (i.e. Hence there is huge amount of Construction and Demolition waste is generated every year, which creates environmental problems, burden on Landfill. Rapid Urbanization, population needs optimization of land and change in trends of construction demands demolition of existing structure to construct new highrises buildings. Investment in construction sector is nearly 11 % of GDP and it is estimated that about 239.68 billion will be the investment in Construction sector over next 5 years. Construction Industry is second largest Industry after Agriculture. India has established itself as fast growing Economies. As per BIS a compressive strength of 2MPa is sufficient for a block to be used as a masonry structure and the present research aims to provide a strength of more than 2Mpa in the block. The paper also aims at studying the effect of partial and complete replacement of conventional materials with waste materials in the block. Stones selected from hills and mountains near the site shall be used in the manufacture of the blocks. This paper aims at studying the use of natural and industrial waste materials such as Fly-ash, Granite dust and locally available soil for production of sustainable Stone Masonry Blocks which means little or no damage to environment and able to continue for future generation. Construction demolition wastes are also good sources of fine and course aggregates which needs refinement and proper segregation to be used as a fresh construction material. Boulders/Stones are present in abundance quantities near hills and mountains which have no practical importance. Recent trends have shown huge amount of Industrial and Natural waste materials being discarded without proper treatment and utilization. Masonry units form the major fraction of any construction activity, and use of masonry units such as Bricks, Concrete Blocks, Clay Blocks, etc. It is evident that production of conventional materials leads to large scale CO 2 emissions. ABSRACT: Due to the rapid growth of Indian economy and construction sector, the use of natural resources for manufacturing of conventional construction materials have increased.
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