根据活性粉末混凝土密实配合比设计原理，结合福建当地材料制备3 个系列混凝土试件，研究不同纤维品种、掺量
对 R P C基本力学性能的影响规律，并采用Instron电液伺服式疲劳试验得到纤维增强R P C疲劳寿命发展情况及分布规律。
掺入聚丙烯纤维对R P C抗压强度、劈裂强度、弯折强度及延性具有一定程度提升，但效果不明显。钢纤维掺量对R P C 强度
具有较明显增强效果，抗压强度随掺量呈抛物线增长规律;劈裂、弯折强度随钢纤维掺量呈线性及指数增长趋势。R P C平
均疲劳寿命随聚丙烯纤维掺量呈抛物线增长规律，随钢纤维掺量呈明显递增趋势。分析给出各力学指标随2 种纤维掺量
的回归关系式。统计分析各系列试件的疲劳试验数据，R P C 弯曲疲劳寿命与对应的概率函数线性相关显著，服从两参数威
布尔分布，计算给出存活率- 疲劳寿命曲线。
关键词：活性粉末混凝土；纤维增强；基本力学性能；弯曲疲劳寿命;威布尔分布
中图分类号:TU5 文献标志码:A 文章编号:1672-7029 (2016) 07-1275-07
Study on mechanical properties and fatigue life of reactive powder concrete
Abstract： A cco rd ing to th e d en se pro portio n p rin c ip le of R P C , th ree series of co n crete sp ecim en s w ere p rep ared
w ith F u jian local m aterials. T h e influ en ce law of d ifferen t fib e r types on b asic m e ch an ica l p ro p erties of R P C w as
stu d ied . T h e b en d in g fatigu e tests w ere perform ed usin g th e In stro n electro — h y d rau lic servo fatig u e testin g
m a ch in e to get th e dev elop m en t an d d istrib u tio n law o f fatig u e life of fib e r rein fo rced R P C . R esu lts show th e in ­
co rp o ratio n of polypro py len e fib e r for R P C h as a certain d eg ree of im provem ent on co m p ressive stre n g th , splittin g
stre n g th , b en d in g stren gth a n d d u c tility , b u t th e prom oting effect is not so obvious. S teel fib er c o n te n t h as obvious en h an cem en t on R P C stren g th . C om pressive stren gth w ith th e steel fib e r co n ten t is th e p arab o la grow th la w ,
sp littin g ten sile stren gth a n d b en d in g strength w ith th e co n te n t a re lin e a r grow th an d ex p o n en tial grow th tre n d re ­
sp ectiv ely. T h e averag e fatigue life w ith th e po lyprop ylene fib e r is th e p arab o la la w , w ith th e steel fib e r co n te n t is
significan tly in c reasin g tren d . T h e reg ression relatio n s of m ech an ica l in d ex es w ith two k in d s of fib e r co n te n t are
given 〇 S tatistical an aly sis on fatigu e test d a ta of e ac h serials of sp ecim en in d icates th a t b e n d in g fatig u e life of
R P C is in lin e a r co rrelation w ith th e co rresp o n din g p ro b ab ility sig n ifican tly , an d obeys th e tw o—p a ram eter w eibull

因本站资料资源较多，启用了多个文件服务器，如果浏览器下载较慢，请调用迅雷下载，特别是超过了5M以上的文件！请一定调用迅雷，有时候速度就会飞起哦，如果您的浏览器自动加载了PDF预览，文件太大又卡死，请按下载说明里的把PDF插件关闭了就可以直接下载，不会再预览了！