The effect of different accelerated aging methods on properties of sisal fiber reinforced concrete with and without metakaolinite

The effect of different accelerated aging methods on properties of sisal fiber reinforced concrete with and without metakaolinite

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
  
© 2016 by IJETT Journal
Volume-31 Number-4
Year of Publication : 2016
Authors : Sarmad Fadhil, Mohanad Yaseen
DOI :  10.14445/22315381/IJETT-V31P235

Citation 

Sarmad Fadhil, Mohanad Yaseen"The effect of different accelerated aging methods on properties of sisal fiber reinforced concrete with and without metakaolinite", International Journal of Engineering Trends and Technology (IJETT), V31(4),198-203 January 2016. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Abstract
The effect of accelerated aging methods on sisal fiber reinforced concrete with and without metakaolinite has been investigated through a number of tests. The properties investigated include compressive strength, flexural strength, splitting tensile strength and pH-value. Sisal fiber has been used at three percentages of total mixture volume (0.6, 1.20 and 1.8%), while the metakaolinite has been added in (10, 30 and 50%) as a partial replacement by weight of cement. The results of this study show that the mechanical strength of fiber reinforced concrete with and without metakaoline decrease as the exposure period of wetting and drying is increase. The maximum reduction in mechanical strengths for MF1.2, 30 after 15-cycles of wetting-drying conditions was 35.53, 6.7 and 16.2 % for compression, flexural and splitting strength respectively compared with 5-cycles of wetting-drying conditions. The hot-water soak method considered as an accelerated aging and not influence significantly on the mechanical strength of plain concrete, fiber reinforced concrete with and without metakaoline. The important observation from this study is the reduction in pH-level of plain and fiber reinforced concrete due to the incorporation of metakaoline as a partial replacement by weight of cement and as a result of this reduction the mechanical strength of sisal fiber reinforced concrete exposed to various conditions (wetting-drying and hot water) enhanced and improved by incorporation 30% of metakaoline (by weight of cement).

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Keywords
sisal fiber, metakaolinite, accelerated aging.