title: Recycling ground granulated blast furnace slag as cold bonded artificial aggregate partially used in self-compacting concrete.
abstract: Ground granulated blast furnace slag (GGBFS), a by-product from iron industry, was recycled as artificial coarse aggregate through cold bonding pelletization process. The artificial slag aggregates (ASA) replaced partially the natural coarse aggregates in production of self-compacting concrete (SCC). Moreover, as being one of the most widely used mineral admixtures in concrete industry, fly ash (FA) was incorporated as a part of total binder content to impart desired fluidity to SCCs. A total of six concrete mixtures having various ASA replacement levels (0%, 20%, 40%, 60%, and 100%) were designed with a water-to-binder (w/b) ratio of 0.32. Fresh properties of self-compacting concretes (SCC) were observed through slump flow time, flow diameter, V-funnel flow time, and L-box filling height ratio. Compressive strength of hardened SCCs was also determined at 28 days of curing. It was observed that increasing the replacement level of ASA resulted in decrease in the amount of superplasticizer to achieve a constant slump flow diameter. Moreover, passing ability and viscosity of SCC's enhanced with increasing the amount of ASA in the concrete. The maximum compressive strength was achieved for the SCC having 60% ASA replacement.
authors.affiliation: Department of Civil Engineering, Gaziantep University, 27310, Gaziantep, Turkey. mgesoglu@gantep.edu.tr
authors.forename: Mehmet
authors.initials: M
authors.lastname: Gesoğlu
authors.forename: Erhan
authors.initials: E
authors.lastname: Güneyisi
authors.forename: Swara Fuad
authors.initials: SF
authors.lastname: Mahmood
authors.forename: Hatice Öznur
authors.initials: HÖ
authors.lastname: Öz
authors.forename: Kasım
authors.initials: K
authors.lastname: Mermerdaş
mesh_terms: D060729:Coal Ash / Q000737:chemistry; D019245:Compressive Strength; D003252:Construction Materials; D007220:Industrial Waste; D007501:Iron; D008669:Metallurgy; D059027:Recycling / Q000379:methods*; D012822:Silicon Dioxide / Q000737:chemistry
chemical_list: D060729:Coal Ash; D007220:Industrial Waste; D012822:Silicon Dioxide; D007501:Iron