Reproportioning of steel fibre reinforced concrete mixes and their impact resistance

被引：93
作者：
Nataraja, MC [1 ]
Nagaraj, TS
Basavaraja, SB
机构：
[1] Sri Jayachamarajendra Coll Engn, Mysore 570006, Karnataka, India
[2] Univ Massachusetts, Amherst, MA 01003 USA
[3] RV Coll Engn, Bangalore, Karnataka, India
[4] JSS Womens Polytech, Mysore 570006, Karnataka, India
来源：
CEMENT AND CONCRETE RESEARCH | 2005年 / 35卷 / 12期
关键词：
mixture proportioning; fibre reinforcement; mechanical properties; compressive strength and workability;
D O I：
10.1016/j.cemconres.2005.06.011
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this experimental investigation, a practical rapid method of proportioning steel fibre reinforced concrete (SFRC) mixes is developed and validated. The basis for developing this is to use the reproportioning method, which has already been developed for proportioning normal density cement concrete mixes, for SFRC mixes. Based on the results of the trial mix, two SFRC mixes having 28 day target strength of 30 and 50 MPa are designed using this technique and examined regarding its validation. In addition, the impact resistance of these reproportioned Plain Concrete (PC) and SFRC is studied at 7 and 28 days. It is observed that the SFRC has developed significant impact resistance even for a small addition of steel fibres. Pulse velocity test is conducted at different ages to assess the quality of concrete. It is found that all concrete specimens could be classified under good quality. (c) 2005 Elsevier Ltd. All rights reserved.
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页码：2350 / 2359
页数：10
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