期刊
MATERIALS AND STRUCTURES
卷 42, 期 8, 页码 1117-1124出版社
SPRINGER
DOI: 10.1617/s11527-008-9447-x
关键词
Composites; Roller-compacted concrete; Workability; Strength; Ultimate tension elongation
资金
- National Natural Science Foundation of China [50679054]
The strength and shrinkage behaviors of roller-compacted concrete (RCR) with used tire-rubber additive were experimentally investigated by keeping the compressive strengths of all specimens at the level of 40 MPa. Four rubber contents were used: 50, 80, 100, and 120 kg/m(3). Test results show that the rubber particles homogeneously distributed in RCR, rubber particle emersion was not observed during vibrating for compaction. The workability of RCR was slightly influenced by replacing portion of sand with the same volume of tire rubber particles. RCR specimen exhibited a ductile failure under compression. In comparison with the control concrete, when the compressive strength was kept constant for RCR, the tensile strength, flexural strength, and ultimate tension elongation increased with the increase of rubber content. The incorporation of tire rubber did not help in reducing the drying shrinkage, on the contrary, a little more drying shrinkage developed in RCR than that in the control concrete.
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