欢迎访问《建筑材料学报》编辑部网站！

引用本文:	于婧,雷实满,梁兴文,刘小军,李林.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[J].建筑材料学报,2017,20(4):611-616

【打印本页】【下载PDF全文】【查看/发表评论】【EndNote】【RefMan】【BibTex】

←前一篇|后一篇→

过刊浏览高级检索

本文已被：浏览 708次下载 0次	码上扫一扫！
分享到：微信更多字体:加大+\|默认\|缩小-
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
于婧¹, 雷实满¹, 梁兴文¹, 刘小军¹, 李林²
1.西安建筑科技大学土木工程学院,陕西西安710055;2.陕西建研结构工程股份有限公司，陕西西安710082

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.

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

DOI：103969/j.issn.1007 9629201704020

分类号:

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）

Design Method for Mixture Proportioning of A New Hybrid Steel Fiber Self compacting Concrete

YU Jing¹, LEI Shiman¹, LIANG Xingwen¹, LIU Xiaojun¹, LI Lin²

1.College of Civil Engineering, Xian University of Architecture & Technology, Xian 710055, China;2.Shaanxi Jianyan Structural Engineering Co., Ltd., Xian 710082, China

Abstract:

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.

Key words: hybrid steel fiber self compacting concrete(HSFSCC) mix proportion average thickness of paste layer(ATPL) sand fiber ratio standard cube compressive strength flexural strength