• 首 页期刊简介编 委 会规章制度作者指南审稿流程联系我们
期刊封面
马晓楠,张冰,安新正.砂率对富含砖粒再生混凝土断裂性能影响试验研究[J].河北工程大学自然版,2019,36(2):21-24
砂率对富含砖粒再生混凝土断裂性能影响试验研究
Experimental study on in?uence of sand ratio on fracture performance of brick-rich recycled concrete
投稿时间:2018-12-18  
DOI:10.3969/j.issn.1673-9469.2019.02.005
中文关键词:  砂率  富含砖粒再生混凝土  断裂能  断裂韧度
英文关键词:sand rate  rich in brick recycled concrete  fracture energy  fracture toughness
基金项目:河北省自然科学基金资助项目(E2015204111);河北省科学技术研究与发展计划资助项目(152736090)
作者单位
马晓楠 河北工程大学 土木工程学院, 河北 邯郸 056038 
张冰 河北工程大学 土木工程学院, 河北 邯郸 056038 
安新正 河北工程大学 土木工程学院, 河北 邯郸 056038 
摘要点击次数: 48
全文下载次数: 23
中文摘要:
      为了研究砂率对再生混凝土断裂性能的影响,以RC25为基准再生混凝土,制作了砂率分别为25%、30%、35%、40%、45%、50%的再生混凝土梁试件。通过梁的三点弯曲试验,从断裂韧度和断裂能两个方面,研究了富含砖粒再生混凝土断裂性能随砂率的变化规律。结果表明:富含砖粒再生混凝土的断裂韧度、断裂能均随砂率的增大呈现出先增大而后减小的趋势;砂率由25%增大到35%时,断裂韧度增大了8.43%,断裂能增大了10.73%;砂率由35%增大到50%时,断裂韧度降低了3.81%,断裂能降低了11.29%;砂率小于35%时的断裂韧度比砂率大于35%时的断裂韧度更容易受到砂率变化的影响,而断裂能则没有出现相同的情况。
英文摘要:
      In order to study the effect of sand rate on the fracture properties of recycled concrete, recycled concrete was prepared based on RC25, and recycled concrete beam specimens with sand ratios of 25%, 30%, 35%, 40%, 45% and 50% were produced. Through the three-point bending test of the beam, the variation of the fracture performance of the brick-rich recycled concrete with the sand ratio was studied from the aspects of fracture toughness and fracture energy. The results show that the fracture toughness and fracture energy of the brick-recycled concrete increase first and then decrease with the increase of sand rate. When the sand rate increases from 25% to 35%, the fracture toughness increases. By 8.43%, the fracture energy increases by 10.73%, and when the sand ratio increases from 35% to 50%, the fracture toughness decreases by 3.81%, the fracture energy decreases by 11.29%. The fracture toughness at a sand ratio less than 35% is more susceptible to changes in sand rate compared with that at a sand ratio greater than 35%, which does not happen to the fracture energy.
  查看/发表评论  下载PDF阅读器  下载全文
关闭