Fines extracted from recycled concrete as alternative raw material for Portland cement clinker production. (April 2015)

• Record Type: Journal Article
• Authors: Schoon, Joris; De Buysser, Klaartje; Van Driessche, Isabel; De Belie, Nele
• Is Part Of: Cement & concrete composites. Volume 58(2015)
• Page Start: 70
• Page End: 80
• Publication Date: 2015-04
• Subjects: Clinker -- Recycled concrete aggregates -- Recycled sand -- Filler -- Fines fraction; Ag aggregates -- Ant Antoing -- ADR Advanced Dry Recovery -- ARM/ADR ADR fines fraction -- ARM/CTP CTP fines fraction -- ARM/KHD KHD fines fraction -- CCM Cold Clinker Meal -- CL Clinker -- CRM Classic Raw Material -- CTP Centre Terre et Pierre -- DoS Degree of Sulfatisation -- FA Fly Ash (Al2O3-source) -- HCM Hot Clinker Meal -- KHD KHD Humboldt Wedag AG -- IC Iron Carrier (Fe2O3-source) -- LSF Lime Saturation Factor -- LiqSimple Liquid Simple -- LOI Loss on Ignition -- Lo Loam (SiO2-source) -- Lxh Lixhe -- Maa Maastricht -- Ma Marl (specific type of limestone) -- PL poor limestone -- Ref Reference -- RL Rich Limestone -- SC Sabulous Clay (SiO2-source) -- SR Saturation Rate -- Tu Tuffeau (specific type of limestone) -- VSI Vertical Shaft Impactor; Composite-reinforced concrete -- Periodicals; Concrete -- Periodicals; Composite materials -- Periodicals; Composites de ciment -- Périodiques; Béton -- Périodiques; Composites -- Périodiques; Béton léger -- Périodiques; Cement composites; Composite materials; Composite-reinforced concrete; Concrete; Lightweight concrete; Periodicals; Electronic journals; 620.135
• DOI: 10.1016/j.cemconcomp.2015.01.003
• Languages: English
• ISSNs: 0958-9465

Abstract

Abstract: This paper aims to examine the use of fines generated out of recycled aggregates production as an alternative raw material for Portland clinker kilns with enumeration of possible limitations. Different technical set-ups were used to separate these fines from the recycled aggregates. The relationship between the particle size distribution of the generated fines fraction and their chemical composition as well as the relationship between the final filler (<63 μm) content [ wt% ] and the water demand of the treated sand fraction were investigated. Numerical simulations were carried out to maximise the fines fractions as raw materials in clinker kilns based on which experimental clinkers were produced. The final clinkers were fully analysed and evaluated on possible mineralogical influences.