Durability and Microstructure Characteristics of Concrete with Supplementary Cementitious Materials
Reads0
Chats0
TLDR
In this paper , the potential of using supplementary cementitious materials (SCMs), like fly ash and ground granulated blast furnace slag, as being essential to replacing the existing Ordinary Portland Cement (OPC), is discussed.Abstract:
Considering the environmental impact of cement manufacturing industries, this paper concerns the potential of using supplementary cementitious materials ( SCMs ), like fly ash and ground granulated blast furnace slag, as being essential to replacing the existing Ordinary Portland Cement ( OPC ). The objective of this paper is to study the microstructural characteristics of concrete with SCMs and improve the durability of the product to increase the lifespan of concrete structures. Replacement SCMs in OPC are 0, 40, 50, and 60 by percentage of cement weight, and we have taken a water-binder ratio of 0.40 for M40 grade and 0.28 for M60 grade concrete. The physical properties and chemical composition of OPC, Ground Granulated Blast-furnace Slag ( GGBS ), and fly ash were identified, and three different experiments were conducted to determine the resistance to penetration of chloride ions and corrosion processes. The rapid chloride permeability test, accelerated corrosion, and sorptivity tests were employed to measure concrete's resistance to the effects of aggressive environments and examine the durability properties. The most performed grade samples were analyzed as individual microspheres with Scanning Electron Microscopy ( SEM ), Energy Dispersive X-Ray Spectroscopy ( EDXS ), and X-ray diffraction. Significant improvements in various concrete properties were achieved through the partial replacement of fly ash and GGBS with cement.read more
References
More filters
Journal ArticleDOI
Reexamination of ASTM C 1202 : Standard test method for electrical indication of concrete's ability to resist chloride ion penetration
TL;DR: In this article, the ASTM C 1202 chloride penetration test method has been reexamined both theoretically and experimentally and it was shown that hydroxyl ion generated at the cathode during testing carries a substantial part of the current and that chloride ion is not the sole current carrier.
Journal ArticleDOI
Investigation of hydraulic activity of ground granulated blast furnace slag in concrete
TL;DR: In this article, a relationship between the Hydraulic Index (HI) of slag at 7 and 28 days (HI7 and HI28) and the influencing properties of slags, namely, glass content, fineness and chemical composition, was investigated.
Journal ArticleDOI
Fly ash and slag
TL;DR: In this paper, a large amount of studies are devoted to seeking synergies between FA, HCFA, granulated blast furnace slag (GBFS), and limestone, focusing on durability characteristics of composites cement containing FA and HCFA.
Journal ArticleDOI
Sorptivity of fly ash concretes
TL;DR: In this paper, a factorial experiment was designed to measure the sorptivity of cement and fly ash concretes in order to compare the durability of fly ash concrete against the cement concrete.
Journal ArticleDOI
Energy Savings Associated with the Use of Fly Ash and Nanoadditives in the Cement Composition
TL;DR: In this paper, the effects of using supplementary cementitious materials (SCMs) in quaternary mixtures on the compressive strength and splitting tensile strength of plain concrete are investigated.