【摘要】 本文通过测定钢纤维、聚丙烯纤维和混杂纤维(聚丙烯纤维和钢纤维)增韧高性能混凝土的高温残余强度和断裂能,研究聚丙烯纤维、钢纤维和混杂纤维对混凝土高温残余力学性能的影响。实验结果表明,钢纤维和混杂纤维,尤其是钢纤维,显著提高高性能混凝土的残余强度和断裂能。聚丙烯纤维对高性能混凝土残余力学性能的影响很小。更多还原

【Abstract】 After being subjected to high temperatures,residual mechanical properties of fibre-toughened high performance concrete were investigated.Both residual strength and residual fracture energy were tested on concrete containing polypropylene fibre、steel fibre of hybrid fibre(polypropylene fibre and steel fibre).The results reveal that steel fibre and hybrid fibre,especially the former,could improve residual mechanical properties of concrete after exposure to high temperatures.The presence of polypropylene fibre had almost little effect on residual mechanical properties.更多还原