Experimental study on durability and sustainability of concrete with limestone and dolomite fillers

Author(s): Moetaz El-Hawary, K. E. Nouh
Paper category: Proceedings
Book title: Proceedings of the International Conference on Sustainable Materials Systems and Structures (SMSS2019) Durability, Monitoring and Repair of Structures
Editor(s): Ana Baričević, Marija Jelčić Rukavina, Domagoj Damjanović, Maurizio Guadagnini
ISBN: 978-2-35158-217-6
e-ISBN: 978-2-35158-218-3
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 127-136
Total Pages: 813
Language: English

Abstract: Investigating efficient new methods and techniques to improve concrete sustainability is one of the main concerns of researchers in the field of concrete technology. The utilization of a cheap filler as partial replacement of the Portland cement which is a high energy consuming material. The use of fillers is more beneficial in the case of high strength concrete where both water and space are limited to achieve full hydration of cement.
In this work the behavior, properties, durability and sustainability benefits of concrete produced using different ratios of fillers (0,10,20,30%) as partial replacement of Portland cement are investigated. Two types of fillers are utilized, crushed limestone and crushed dolomite. In general, it was found that the introduction of up to 30% of limestone or dolomite as cement replacement will greatly improve sustainability with tolerable effects on concrete properties or durability. The use of 10% fillers improve sustainability, shrinkage resistance, chloride penetration, alkali silica resistance while slightly reduce compressive strength and increase absorption. Results were found to depend on the type of filler. Tensile strength, for example, was found to increase due to the use of 10% limestone and decrease when using 10% dolomite. It is expected, however, that the penetration will be reduced and mechanical properties will improve with the increase in filler fineness.

Online publication :2019
Publication type : full_text
Public price (Euros) : 00