土木专业英语摘要翻译.doc

《专业英语摘要翻译》 课程作业 专业： 年级： 姓名： 学号： **大学土木工程学院 2015 年 6 月 Preparation of C200 green reactive powder concrete and its static-dynamic behaviors C200绿色活性粉末混凝土的制备和它的静力、动力性能的研究 Abstract In this paper, a new type of green reactive powder concrete (GRPC) with compressive strength of 200 MPa(C200 GRPC) is prepared by utilizing composite mineral admixtures, natural fine aggregates, short and fine steel fibers. The quasi-static mechanical properties (mechanical strength, fracture energy and fiber–matrix interfacial bonding strength) of GRPC specimens, cured in three different types of regimes(standard curing, steam curing and autoclave curing), are investigated. The experimental results show that the mechanical properties of the C200 GRPC made with the cementitious materials consisting of 40% of Portland cement, 25% of ultra fine slag, 25% of ultra fine fly ash and 10% of silica fume, 4% volume fraction of steel fiber are higher than the others. The corresponding compressive strength, flexural strength, fracture energy and fiber–matrix interfacial bonding strength are more than 200 MPa,60 MPa, 30,000 J/m2 and 14 MPa, respectively. The dynamic tensile behavior of the C200 GRPC is also investigated through the Split Hopkinson Pressure Bar (SHPB) according to the spalling phenomena.The dynamic testing results demonstrate that strain rate has an important effect on the dynamic tensile behavior of C200 GRPC. With an increase of strain rate, the peak stress rapidly increases in the dynamic tensile stress–time curves. The C200 GRPC exhibits an obvious strain rate stiffening effect in the case of high strain rate. Finally, the mechanism of excellent static and dynamic properties gains of C200 GRPC is also discussed. 摘要： 本文，使用合成矿物外加剂、天然细骨料、短细钢纤维制备了一种抗压强度200MPa的绿色活性粉末混凝土（GRPC）。研究了GRPC样本在三种不同养护制度下（标准养护、蒸汽养护、蒸压养护）的拟静力性能（力学强