纤维淤泥制陶粒混凝土强度正交试验研究

Orthogonal experiment research on the strength of fiber reinforced silt ceramsite concrete

采用以城市淤泥制陶粒全部或部分替代天然骨料,并在其中掺入纤维来配置纤维淤泥制陶粒混凝土(FSCC).通过正交试验方法,探讨了水灰比、骨料取代率、纤维掺量三个因素对聚丙烯纤维淤泥制陶粒混凝土(PFSCC)及钢纤维淤泥制陶粒混凝土(SFSCC)的28d立方体抗压强度、劈裂抗拉强度的影响.试验结果表明:骨料取代率、水灰比、纤维掺量对PFSCC的抗压强度、劈裂抗拉强度的影响依次减小,其中骨料取代率和水灰比对劈裂抗拉强度影响相当;骨料取代率、纤维掺量、水灰比对SFSCC抗压强度的影响依次减小;钢纤维掺量对劈裂抗拉强度的影响突出,而水灰比和骨料取代率的影响较小.

The fiber reinforced silt ceramsite concrete （FSCC） was prepared and mixed with fiber based on urban sile ceramics aggregate of all or part of the replacement of natural aggregate. The effect of the water cement ratio, aggregate replacement ratio and fiber contents was investigated on the 28d cube compressive strength, splitting tensile strength of polypropylene fiber reinforced silt ceramsite concrete （PFSCC） and steel fiber reinforced silt ceramsite concrete （SFSCC） by the orthogonal experiments. Test results show that the influence of aggregate replacement ratio, water cement ratio and fiber contents on the compressive strength and splitting tensile strength of the PFSCC reduce in turns. The influence of aggregate replacement ratio on the splitting tensile strength is the same as the water cement ratio. The influences of aggregate replacement ratio, fiber contents and water cement ratio on the compressive strength of the SFSCC reduce in turns. The influence of steel fiber contents on the splitting tensile strength is significant, but the influence of the water cement ratio and aggregate replacement is not as great .