vol26no4pa3

TJES: Ahmed AK, Al-Sulayvany BJ , Jomma’h MM. Mechanical Characteristics of Lightweight Concrete Enhanced by Fly-Ash and Steel Fiber. Tikrit Journal of Engineering Sciences 2019; 26(4): 16- 25.

APA: Ahmed, A. K. , Al-Sulayvany, B. J., Jomma’h,  M. M. (2019). Mechanical Characteristics of Lightweight Concrete Enhanced by Fly-Ash and Steel Fiber. Tikrit Journal of Engineering Sciences, 26 (4), 16- 25.

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Tikrit Journal of Engineering Sciences (2019) 26(4) 16- 25.

Mechanical Characteristics of Lightweight Concrete Enhanced by Fly-Ash and Steel Fiber

Arkan Khaleel  Ahmed *1 Bayer Jaafar Al-Sulayvany 1 Muyasser Mohammed Jomma’h *2

1Civil Eng. Dept., College of Engineering, University of Mosul

2 Civil Eng. Dept., College of Engineering, Tikrit University.

* Corresponding author: Muyasser Mohammed Jomma’h  

DOI: http://doi.org/10.25130/tjes.26.4.03

Abstract

This research deals with production of light weight aggregate concrete by using clayey stone aggregate, normal material (cement , sand) and some of mineral admixtures (fly ash and steel fiber ). Many trial mix were doing some of these by weighing ratio and others by volumetric ratio . We get light weight aggregate concrete (LWAC) with 24.92 N/ mm2 compressive strength and we improved mechanical properties by adding same percentage of fly ash and steel fiber (0.5 ,1 ,1.5) % of each other as a percentage weighing ratio of cement content . compressive strength increased with (7.8 , 5.2 , 2.9) % , splitting tensile strength increased with (20 ,16.71, 12)% and flexural strength increased with (24.5 , 17.9 , 8) % when adding (0.5 ,1 ,1.5) % of each steel fiber and fly ash respectively. The practical results of the current study indicates that the using clayey stone to produce (LWAC) is success and we can improved mechanical properties of this (LWAC) was produced in this research by adding fly ash and steel fiber with previously percentage.

Keywords: Concrete, Lightweight, Fly-ash, Steel Fiber

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