摘要
高炉矿渣粗骨料（BFSA）可用于配制高强混凝土（HSC）.通过5个不同水胶比（0.30、0.35、0.40、0.45、0.50）的BFSA混凝土与普通骨料混凝土（基准混凝土）在7d和28d龄期的抗压强度等力学性能比较,得出以BFSA生产的高强混凝土具有一系列优良性能,如不同水胶比的BFSA混凝土的抗压强度比相应的基准混凝土高出26%～87%;BFSA混凝土比基准混凝土具有更低的渗透性、更高的劈拉强度和更低的脆性.试验过程中,以10%的硅粉（SF）等量取代普通硅酸盐水泥,并掺加超塑化剂,从而有效改善BFSA混凝土的性能.为了便于比较,试验过程中保持所有混凝土拌合物坍落度相同.
Blast furnace slag aggregates （BFSA） were used to produce high-strength concretes （HSC）. Different water-binder ratios （0.30, 0.35, 0.40, 0.45 and 0.50） were used to do tests of 7-day and 2S-day compressive strength and other properties of conventional （reference） concrete and BFSA concrete.Super-plasticizer and 10% silica fume were used to improve BFSA concretes. Slump was kept constant throughout this study. It concluded that compressive strength of BFSA concretes are approximately 26% - 87% higher than reference concretes for different water-binder ratios. These concretes also have lower water absorption, higher splitting tensile strength and lower brittleness.
出处
《工业建筑》
CSCD
北大核心
2007年第3期72-74,116,共4页
Industrial Construction
关键词
高炉矿渣
抗压强度
吸水性
劈拉强度
脆性
blast furnace slag compressive strength water absorption splitting tensile strength brittleness
