【摘要】 砂子的粗细、级配、含泥量是影响砼物理力学性能及耐久性能的重要因素，目前高强高性能砼在建筑工程中应用越来越广泛，但优质的天然砂资源日渐枯竭，本文就掺粉煤灰人工砂配制砼以及对砼力学性能的影响进行研究，表明人工砂的性能优于天然山砂，更适合用于配制高强砼．更多还原

【Abstract】 The size, aggregate grading and mud proportion of sand are important factors which affact the dynamics and endurance functions of cocrete. Recently, more and more high strength and performance concrete materials have been wildly used in civil engineering, meanwhile, the natural sand resources with good quality have been gradually exhausted, this paper discourse the research work on how to use artifical sand mixed with fly ash to make up concrete and the performance this kind of cocrete, the research results chows that the perpormance of artifical sand is batter then that of natural mountainous sand. The artifical sand is more suitable to be used to make up cocrete.更多还原