含泥土杂质再生混凝土的抗压强度试验研究

Experimental Study on Compressive Strength of Recycled Concrete Containing Soil Impurities

通过对108个再生混凝土试块的轴压试验,研究泥土杂质对再生混凝土强度性能的影响。研究结果表明：含有泥土的再生混凝土7d抗压强度能够达到28d抗压强度的56%~63%;水灰比从0.36增大到0.45,再生混凝土的强度下降幅度较大,水灰比从0.45增大到0.53,强度基本无变化;含泥量小于3%基本不影响再生混凝土的抗压强度。

Based on axially compressive test of 108 recycled concrete test block,this paper explores the influence of the soil of impurities on strength properties of recycled eoncrete.The test results showed that：The compressive strength of recycled concrete containing soil impurities can reach 56% to 63% in 7d; Water-cement ratio increased from 0.36 to 0.45,The strength of＂ the recycled concrete containing soil impurities downward trend, and have a large decline,water-cement ratio increased from 0.45 to 0.53, the strength almost unehanged ;When the mud content is less than 3%,the compressive strength of recycled concrete does not substantially affect.