纤维对自密实混凝土力学性能影响的研究

Mechanical properties between self-compacting concrete and fibers

研究了不同纤维与不同强度自密实混凝土之间的力学性能。通过对混凝土试块的性能测试得出,纤维能明显降低自密实混凝土养护期间的强度。钢纤维、聚丙烯纤维和聚乙烯纤维能改善自密实混凝土28d抗拉强度;钢纤维能改善自密实混凝土28d抗压强度;而聚丙烯纤维和聚乙烯纤维则会降低其28d抗压强度。

The mechanical strengths of self-compacting concrete （ SCC ） with different strengths and different fibers were investigated. By mechanics performance testing on concrete samples, it shows that the fiber can significantly reduce strength of the self- compacting concrete during curing period.The 28 d tensile strength of self-compacting concrete can be improved when steel fiber,polypropylene fiber, or polyethylene fiber were used.Moreover, steel fiber can improve the 28 d compressive strength;contrarily,polypropylene fiber and polyethylene fiber can reduce the 28 d compressive strength.