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一种新型混杂钢纤维增强自密实混凝土的配合比设计方法
Design Method for Mixture Proportioning of A New Hybrid Steel Fiber Self compacting Concrete
投稿时间:2016-05-20  修订日期:2016-06-14
DOI:103969/j.issn.1007 9629201704020
中文关键词:  混杂钢纤维增强自密实混凝土  配合比  平均裹浆厚度  砂纤比  标准立方体抗压强度  抗弯强度
英文关键词:hybrid steel fiber self compacting concrete(HSFSCC)  mix proportion  average thickness of paste layer(ATPL)  sand fiber ratio  standard cube compressive strength  flexural strength
基金项目:国家自然科学基金资助项目(51278402,51078305,51408464);陕西省教育厅专项科研计划项目(16JK1449)
              
作者单位
于婧
YU Jing
西安建筑科技大学土木工程学院,陕西西安710055
College of Civil Engineering, Xian University of Architecture & Technology, Xian 710055, China
雷实满
LEI Shiman
西安建筑科技大学土木工程学院,陕西西安710055
College of Civil Engineering, Xian University of Architecture & Technology, Xian 710055, China
梁兴文
LIANG Xingwen
西安建筑科技大学土木工程学院,陕西西安710055
College of Civil Engineering, Xian University of Architecture & Technology, Xian 710055, China
刘小军
LIU Xiaojun
西安建筑科技大学土木工程学院,陕西西安710055
College of Civil Engineering, Xian University of Architecture & Technology, Xian 710055, China
李林
LI Lin
陕西建研结构工程股份有限公司,陕西西安710082
Shaanxi Jianyan Structural Engineering Co., Ltd., Xian 710082, China
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中文摘要:
      进行了一种新型混杂钢纤维增强自密实混凝土的配合比设计方法研究.首先以净浆流动度为指标,优选出1组符合要求的净浆配合比;然后根据包裹在钢纤维及砂颗粒表面的平均裹浆厚度(ATPL)以及砂纤比,优选出力学性能和工作性能符合要求的配合比.采用该配合比设计方法可以配制出坍落度大于260mm,扩展度大于550mm,纤维总体积分数为150%的具有自密实工作性能的混凝土.经28d标准养护,其抗压强度最高可达1145MPa,抗弯强度可达188MPa.
英文摘要:
      The design method of a new hybrid steel fiber self compacting concrete(HSFSCC) was reported. A set of pastes were optimized to meet the requirements of working performance for 4 different water binder ratios. Then the content of each component was determined in terms of average thickness of paste layer(ATPL) and sand fiber ratio. The optimal mixing proportions were determined by mechanical property tests. HSFSCC with the slump over 260mm, slump flow over 550mm and total fiber volume fraction equal to 150% will be available. The standard cube compressive strength of it could reach up to 1145MPa and the flexural strength could rise up to 188MPa after 28 days standard curing.
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