Journal ArticleDOI
Green concrete: Prospects and challenges
TLDR
The increasing demand for green concrete has been spurred by demand for high quality concrete products, desire of nations to reduce green-house gas emission, need for conservation of natural resources and limited landfill spaces as mentioned in this paper.About:
This article is published in Construction and Building Materials.The article was published on 2017-12-15. It has received 221 citations till now.read more
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Comparative sustainability assessment of binary blended concretes using Supplementary Cementitious Materials (SCMs) and Ordinary Portland Cement (OPC)
TL;DR: In this article, the authors investigated the environmental, economic and functional performances of binary blended concretes containing Fly Ash (FA), Ground Granulated Blast-Furnace slag (GGBFS) and Silica Fume (SF) at different OPC substitution percentages.
Journal ArticleDOI
Geopolymers in construction - recent developments
TL;DR: A comprehensive overview of past studies on geopolymers synthesised from various precursors, the factors affecting geopolymerisation process, their microstructural characteristics as well as mechanical, chemical, thermal and environmental properties of geopopolymers is presented in this paper.
Journal ArticleDOI
Multi-response optimization using Taguchi-Grey relational analysis for composition of fly ash-ground granulated blast furnace slag based geopolymer concrete
TL;DR: In this paper, Taguchi-Grey relational analysis was used to investigate and optimize the effect of ground granulated blast furnace slag (GGBS) replacement, water to geopolymer solids (W/GPS) ratio, molarity of NaOH solution, binder content and Na2SiO3 to NaO3 solution ratio on setting time, workability and compressive strength of fly ash - GGBS based GPC.
Journal ArticleDOI
Performance of sustainable high strength concrete with basic oxygen steel-making (BOS) slag and nano-silica
Seyed Alireza Zareei,Farshad Ameri,Nasrollah Bahrami,Parham Shoaei,Hamid Reza Moosaei,Niloofar Salemi +5 more
TL;DR: In this article, the performance of high strength concrete with basic oxygen steel-making slag and nano-silica was evaluated as a partial replacement of sand and cement, showing improvements in strength and durability properties, while workability was reduced.
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Estimation of the optimum content of fly ash in concrete composite based on the analysis of fracture toughness tests using various measuring systems
TL;DR: In this paper, the authors presented the results of compressive strength and fracture toughness tests of concrete composite modified with the addition of siliceous fly ash (FA) using the Digital Image Correlation (DIC) system.
References
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Journal ArticleDOI
Industrially interesting approaches to “low-CO2” cements ☆
TL;DR: In this paper, the authors discuss the practicality of replacing portland cements with alternative hydraulic cements that could result in lower total CO 2 emissions per unit volume of concrete of equivalent performance.
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The Role of Inorganic Polymer Technology in the Development of ‘Green Concrete’
TL;DR: In this paper, the potential position of and drivers for inorganic polymers (“geopolymers”) as an element of the push for a sustainable concrete industry are discussed.
Journal ArticleDOI
Influence of nano-SiO2 addition on properties of hardened cement paste as compared with silica fume
TL;DR: In this paper, the influence of nano-SiO 2 (NS) addition on properties of hardened cement paste (hcp) as compared with silica fume (SF) has been studied through measurement of compressive and bond strengths of hcp, and by XRD and SEM analysis.
Journal ArticleDOI
Composition and Microstructure of Alkali Activated Fly Ash Binder: Effect of the Activator
TL;DR: In this paper, the relationship between the mineralogical and microstructural characteristics of activated fly ash mortars and its mechanical properties has been established, and the results of the investigation show that in all cases (whatever the activator used) the main reaction product formed is an alkaline aluminosilicate gel, with low-ordered crystalline structure.
Journal ArticleDOI
Effect of GGBFS on setting, workability and early strength properties of fly ash geopolymer concrete cured in ambient condition
Pradip Nath,Prabir Kumar Sarker +1 more
TL;DR: In this paper, a fly ash-based geopolymer concrete for curing in ambient condition can be proportioned for desirable workability, setting time, and compressive strength using ground granulated blast-furnace slag (GGBFS) as a small part of the binder.