— 1 Introduction According to a World Bank report [1] waste generation is projected to surge from billion tonnes in 2018 to billion tonnes by waste management is considered the primary cause of environmental degradation [2] and geologic hazards [3] leading to serious health is one of the major
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— For site preparation road subgrade construction waste crushing backfill should be based on the use of requirements for depression filling construction waste crushing backfill directly without using the Construction waste storage yard by suburban town of low lying land or valley the conditions are ripe the construction waste resource
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— In geotechnical engineering recycled construction and demolition waste RCDW has been investigated specifically for applications in roads embankments and more recently as backfill materials
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— The waste rock materials used in this paper are taken from the underground mining panel of Xinjulong coal mine Fig 3 and about 3 tons of raw materials are collected to guarantee the quantity of the test specimens are processed by drilling waste rock cores and are carried out on mechanical tests for measuring the mechanical
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This paper considers the correlation between the brick content and the crushing behavior of construction waste First the composition and physical parameters of construction waste from Xi an City in northwest China were investigated
— In view of the two major problems of the rapid growth of global CO2 emissions and the high cost of mine backfill materials cement In this study a new method of mixing coal gangue CG magnesium slag MS and fly ash FA and preparing a backfill material without cementitious material through carbonation curing was proposed and two
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— CDWs were mainly composed of concrete brick rebars waste glass waste plastics and project dregs [5] To consume these solid wastes various researches had been carried out For construction dreg it was modified for utilization in subgrade engineering For example Kim et al successfully developed dregs as a flowable backfill
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— The results show that the waste rocks for backfill exhibited prominent creep compression behaviours where the creep curve was non linear waste rock was crushed to particle size of 30 mm down Two main steps were used for crushing waste rocks were manually hammer crushed to 50 mm down; then to ensure uniformity of the blocks of
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— Solid waste management has become an important global issue and the collection recycling and disposal of solid waste have great environmental impacts This study investigates the feasibility of recycling two different solid wastes phosphogypsum PG and construction demolition waste CDW as cemented paste backfill CPB
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— India requires a large landfill area for the disposal of construction and demolition waste C&DW generated during maintenance renovation or destruction of different structures
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— Mill tailings also possess favourable characteristics for use in paste backfilling The lower utilization of waste rock rock aggregate and construction demolition waste in paste backfilling is due to coarser particle size and the requirement of additional crushing and screening to get the desired particle size
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— Based on evidence that a possible drawback of recycled C&D materials is the risk of crushing during repeated loading Performance of two geosynthetic reinforced walls with recycled construction waste backfill and constructed on collapsible ground Geosynth Int 21 2014 pp 256 269 Crossref View in Scopus Google Scholar
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Utilisation of construction and demolition waste as cemented paste backfill material for underground mine openings cement containing different demolition/construction waste ceramic red clay brick and concrete After crushing and grinding an equal amount by dry weight of each one of these finely ground CDW materials were mixed
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