骨料对工业废渣陶粒混凝土性能的影响

Effect of Aggregate on Properties of Ceramic Concrete with Industrial Waste Residue as Cementitious Material

研究了不同等级陶粒骨料及砂率对陶粒混凝土性能的影响。结果表明:采用800级,600级陶粒为骨料制备工业废渣陶粒混凝土,随骨料用量增加,容重降低有限,但会导致强度和比强度大幅度降低。采用较高等级骨料制备轻混凝土时,通过增加骨料用量降低容重不可取。以400级陶粒为骨料,随骨料用量增加容重有明显降低趋势,但强度变化不大。与骨料等级和用量相比,砂率对不同等级废渣陶粒混凝土的强度和容重的影响要小得多。骨料用量及砂率对废渣陶粒混凝土的软化系数影响不明显,但骨料等级的影响显著,骨料越轻、陶粒混凝土容重越小,软化系数越大。

The effects of different grades of ceramic aggregate and sand coarse aggregate ratio on the properties of ceramic aggregate concrete（ CAC） were studied. The results showed that： by use of grade 800,600 ceramic aggregate for the preparation of industrial waste residue ceramic aggregate concrete（ IWRCAC）,with the increase in the amount of aggregate,bulk density reduction was not large,but the strength was reduced significantly. It was not desirable to reduce bulk density by increasing the aggregate amount of lightweight concrete with high grade aggregate. By use of grade 400 ceramic aggregate,with the increase of the aggregate amount,bulk density had a significant reduction,but the strength changed little. The effect of sand coarse aggregate ratio on strength and bulk density of IWRCAC was much smaller than that of aggregate grade and amount.The effect of aggregate consumption and sand coarse aggregate ratio on the softening coefficient of IWRCAC was not obvious,but the influence of aggregate grade was significant. The lighter the aggregate was and the smaler the bulk density of aggregate concrete,the greater the softening coefficient was.