【摘要】 通过研究高强、超高强混凝土的脆性特点、机理影响因素及其改善措施,结果表明混凝土作为一种准脆性材料,极易发生脆性破坏,特别是在高强混凝土中出现了明显的脆性破坏的性状,至今还没有适当的参数来定量地表示脆性。通过掺入矿物掺合料、纤维增强材料和高聚物可从不同方面对高强、超高强混凝土的脆性进行改善,复合和综合是改善高强、超高强混凝土的脆性的方向和途径。更多还原

【Abstract】 This paper researches brittleness characteristics,mechanism factors influencing brittleness and improvement measures of high strength and super high strength concrete.It is found that as a kind of quasi-brittle material,concrete may easily suffer from brittle failure.In particular,obvious brittle failure is detected in high strength concrete,but there is no appropriate parameter at present for quantitative expression of its brittleness.Brittleness of high strength and super high strength concrete could be improved on different aspects by adding mineral aggregates,fiber-reinforced materials and super polymers.Composition and integration are two directions and ways to improve the brittleness of high strength and super high strength concrete.更多还原