Facial reconstruction

Search LJMU Research Online

Browse Repository | Browse E-Theses

Utilization of High Volume Fraction of Binary Combinations of Supplementary Cementitious Materials in the Production of Reactive Powder Concrete

Nasr, MS, Hasan, ZA, Abed, MK, Dhahir, MK, Najim, WN, Shubbar, AAF and Habeeb, ZD (2020) Utilization of High Volume Fraction of Binary Combinations of Supplementary Cementitious Materials in the Production of Reactive Powder Concrete. Periodica Polytechnica Civil Engineering. ISSN 0553-6626

[img]
Preview
Text
RPC2020.pdf - Published Version
Available under License Creative Commons Attribution.

Download (610kB) | Preview

Abstract

The reactive powder concrete (RPC) is one of the special concrete types that characteristics with high cement content which means high production cost and CO2 emissions to the atmosphere. Therefore, to enhance the environment as well as to develop green RPC, alternatives to cement, such as supplementary cementitious materials (SCMs) were used. Limited studies addressed the use of a high volume fraction of SCMs as a binary combination in the production of RPC. Thus, this study aims to replace a high percentage of cement (50%) with binary combinations of silica fume (SF), type F fly ash (FA) and metakaolin (MK). The experimental program included two phases. In phase one, two groups (SF+FA and MK+FA) were cast without steel fibers. Based on group performance in the first phase, one group was chosen to be used with steel fibers in the second phase. The flow rate, compressive and flexural strengths, density, ultrasonic pulse velocity and dynamic modulus of elasticity tests were conducted. The phase one results showed that SF+FA combination mixtures had better performance than MK+FA mixtures thus they were selected to be used in the second phase (with the addition of 1% volumetric fraction micro steel fibers). Results indicated that it is possible to produce sustainable RPC in which the cement can be replaced with 30% SF and 20% FA (the total replacement is 50%) in the presence of 1% steel fibers with a remarkable enhancement in compressive strength and flexural strength reached up to 44% and 10%, respectively.

Item Type: Article
Uncontrolled Keywords: 0905 Civil Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TH Building construction
Divisions: Civil Engineering & Built Environment
Publisher: Periodica Polytechnica Budapest University of Technology and Economics
Date Deposited: 16 Nov 2020 12:46
Last Modified: 16 Nov 2020 13:00
DOI or Identification number: 10.3311/ppci.16242
URI: https://researchonline.ljmu.ac.uk/id/eprint/14016

Actions (login required)

View Item View Item