用于贮存核废料混凝土断裂能的影响因素分析  

Analysis of Influencing Factor on Fracture Energy of Concrete Containers for Nuclear Waste

作　　者：李艺[1] 梁磊[1,2] 赵文[1] 王国峰[1] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110004 [2]盘锦市城乡规划建设委员会,辽宁盘锦124010

出　　处：《东北大学学报（自然科学版）》2009年第3期441-444,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50508008);辽宁省博士启动基金资助项目(20041014);东北大学博士后科研基金资助项目(20060125);辽宁省自然科学基金资助项目(20082024)

摘　　要：为确保核废料贮存的长期耐久性,参照国际材料与结构联合会标准（RILEM）,分别在常温和受热150℃后,对混杂纤维混凝土和素高强混凝土进行三点弯曲试验.结果表明：1）受热前,纤维混凝土的断裂能为素高强混凝土SP-13的6.3-12.0倍;受热后,为其12.0-16.7倍;2）大尺寸钢纤维A和C对混凝土能量吸收方面的作用优于小尺寸钢纤维B和聚丙烯纤维;钢纤维C（剪切压痕型）对混凝土断裂能的改善效果优于钢纤维A（剪切螺纹型）和钢纤维B（超短超细型）;3）综合利用弯曲韧性指标以及断裂能极差、方差对比分析,钢纤维A和C适用于核废料混凝土容器材料.The antifracture property of concrete container for nuclear waste was investigated to ensure its long-time durability. According to RILEM Standard the three-point-bending test was carried out comparatively for the hybrid fiber reinforced concrete and the plain high-strength concrete （SP-13） at normal temperature and after 150 ℃heating. The results showed that the fracture energy of the former is 6.3-- 12.0 times higher than the latter before heating and 12.0 16.7 times higher than the latter after heating. The big-size steel fibers （types A and C） are superior to both the small-size steel fibers （type B） and polypropylene fibers in absorbing fracture energy, and the type C steel fibers （shear-indented type） is superior to type A（shear-threaded type） and type B （ultra-short/fine type）in improving the fracture energy. Based on the comprehensive flexure toughness index and the comparative analyses of range and variance, a conclusion is drawn that the types A and C are applicable to the materials to make concrete containers for nuclear waste.

关 键 词：核废料 混凝土容器 钢纤维 聚丙烯纤维 粉煤灰 断裂能 

分 类 号：TU528[建筑科学—建筑技术科学]