Workability and Strength Property of PP Fiber Reinforced Self-Consolidate Concrete

doi:10.3969/j.issn.1674-0696.2012.06.10

Journal of Chongqing Jiaotong University(Natural Science) ›› 2012, Vol. 31 ›› Issue (6): 1137-1140.DOI: 10.3969/j.issn.1674-0696.2012.06.10

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Workability and Strength Property of PP Fiber Reinforced Self-Consolidate Concrete

He Xiaobing¹，Zhuo Yi^1,2

1. State ＆ Local Area Jointed Lab of Traffic Civil Engineering Material，Chongqing Jiaotong University， Chongqing 400074，China; 2. Beijing Texida Technology Co. ，Ltd. ，Beijing 100011，China

Received:2012-03-19 Revised:2012-04-06 Online:2012-12-15 Published:2014-10-31

聚丙烯纤维自密实混凝土工作性及强度性能研究

何小兵¹，卓仪^1,2

1. 重庆交通大学交通土建工程材料国家地方联合工程实验室，重庆400074; 2. 北京特希达科技发展有限公司，北京100011

作者简介:何小兵(1978—)，男，湖北仙桃人，副教授，博士研究生，主要从事道路、桥梁教学科研工作。E-mail:davidfox@cqjtu.edu.cn。
基金资助:
重庆市自然科学基金项目( 2008BB6344) ; 交通土建工程材料国家地方联合工程实验室开放基金项目( LHSYS-2012-002)

Abstract

Abstract: The effects of different addition ( by volume) of polypropylene ( PP) fiber on workability and strength of self-consolidate concrete ( SCC) were investigated，by which the optimized proportion of PP fiber ratio was gotten． The results show that，the addition of PP fiber in SCC should be appropriately equal or less than 0． 10% ( by volume) under the condition of constant mix proportion of other materials in SCC; the fiber volume fraction and workability of fiber reinforced self-consolidate concrete compared ( FRSCC) can be improved effectively by increasing powder ratio and admixture ratio，which can make the maximum fiber content to 0． 15% ( by volume) ; contrary to the its influence on workability，the addition of PP fiber have little influence on compressive strength，but the splitting strength of FRSCC with 0． 15% PP fiber under the optimized mix proportion can be improved by 40% than normal SCC．

Key words: f-consolidate concrete, polypropylene fibre, workability, strength

摘要： 研究了不同体积掺量聚丙烯( PP) 单丝纤维自密实混凝土的工作性、抗压强度和劈裂强度。研究表明: 在不改变原有自密实混凝土配合比的情况下，PP 纤维体积掺量不宜超过0． 10%( 体积份数) ; 适当提高胶凝材料和高效减少剂的用量是改善纤维自密实工作性有效途径，并且可以提高纤维的掺量0． 15% ( 体积份数) ; 纤维对自密实混凝土的抗压强度影响较小，最优配合比下PP 纤维自密实混凝土较普通自密实混凝土劈裂强度提高24%。

关键词: 自密实混凝土, 聚丙烯纤维, 工作性, 强度

CLC Number:

TU528.572

He Xiaobing，Zhuo Yi. Workability and Strength Property of PP Fiber Reinforced Self-Consolidate Concrete[J]. Journal of Chongqing Jiaotong University(Natural Science), 2012, 31(6): 1137-1140.

何小兵，卓仪. 聚丙烯纤维自密实混凝土工作性及强度性能研究[J]. 重庆交通大学学报（自然科学版）, 2012, 31(6): 1137-1140.

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Workability and Strength Property of PP Fiber Reinforced Self-Consolidate Concrete

聚丙烯纤维自密实混凝土工作性及强度性能研究

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