【作者】 刘建忠； 孙伟； 缪昌文； 刘加平；

【Author】 LIU Jianzhong~(1,2) SUN Wei~1 MIAO Changwen~2 LIU Jiapin~2 1.Jiangsu Key Laboratory of Civil Engineering Materials,Southeast University,Nanjing 211189,Jiangsu,China; 2.Jiangsu Research Institute of Building Science,Nanjing 210008,Jiangsu,China

【机构】 东南大学江苏省土木工程材料重点实验室； 江苏省建筑科学研究院有限公司；

【摘要】 在研究了粉煤灰对混凝土水化热、收缩、流动性和抗压强度等性能影响的基础上,采用普通原材料和常规工艺进行了粉煤灰掺量为50%的大掺量粉煤灰混凝土的制备,并成功研制出工作性好、28 d抗压强度达114.0 MPa、抗拉强度达4.97 MPa、抗弯初裂强度和抗弯极限强度分别为9.54 MPa、13.34 MPa,并具有良好抗弯韧性的大掺量粉煤灰超性能钢纤维增强混凝土。更多还原

【Abstract】 The influences of fly ash on hydration heat,shrinkage,workability,and the compressive strength were studied.Using ordinary materials and by normal mixing technology,high volume fly ash concretes with the fly ash replacement level of 50% were prepared.And then,one of high performance steel fiber reinforced concretes mixed with high volume fly ash (HPSFRC-HVFA)was developed.The main characteristics of the HPSFRC-HVFA are the following:high workability;the compressive strength of 114.0 MPa,the tensile strength of 4.97 MPa,and the flexural strength of 13.34MPa in 28 d;and excellent flexural toughness.更多还原