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Freeze–thaw resistance, mechanical and transport properties of self-consolidating concrete incorporating coarse recycled concrete aggregate
Highlights 20, 40 and 60wt% of coarse aggregate were replaced with recycled concrete aggregate. Fresh properties of SCC were influenced significantly with addition of RCA. Compressive strength increased slightly with increasing RCA content up to 40%. Generally, transport properties of SCC were affected slightly with addition of RCA. Freeze–thaw resistance of concrete decreased in RCA containing mixtures.
Abstract The effects of coarse recycled concrete aggregate on freeze–thaw resistance, mechanical performance and transport properties of self-consolidating concrete (SCC) were investigated. Recycled concrete aggregate (RCA) was substituted for crushed coarse limestone aggregate as 0, 20, 40 and 60wt% of limestone aggregate. Mixtures having three different water/binder (w/b) ratios (0.43, 0.48 and 0.53) were prepared. The properties of fresh concrete were determined by using the slump-flow, V-funnel and L-box tests. Compressive and splitting tensile strength, ultrasonic pulse velocity (UPV), water absorption, water sorptivity, chloride-ion penetration and freeze–thaw resistance of hardened concrete were determined. Test results indicate that in RCA containing mixtures, the viscosity of the SCC mixtures increased significantly. The compressive strength of SCC mixtures improved slightly with increasing the coarse RCA content up to 40%. In addition, water absorption and chloride-ion penetration of SCC mixtures increased slightly by the incorporation of RCA. On the other hand, the splitting tensile strength, unit weight, UPV, water sorptivity and freeze–thaw resistance of concrete decreased in RCA containing mixtures.
Freeze–thaw resistance, mechanical and transport properties of self-consolidating concrete incorporating coarse recycled concrete aggregate
Highlights 20, 40 and 60wt% of coarse aggregate were replaced with recycled concrete aggregate. Fresh properties of SCC were influenced significantly with addition of RCA. Compressive strength increased slightly with increasing RCA content up to 40%. Generally, transport properties of SCC were affected slightly with addition of RCA. Freeze–thaw resistance of concrete decreased in RCA containing mixtures.
Abstract The effects of coarse recycled concrete aggregate on freeze–thaw resistance, mechanical performance and transport properties of self-consolidating concrete (SCC) were investigated. Recycled concrete aggregate (RCA) was substituted for crushed coarse limestone aggregate as 0, 20, 40 and 60wt% of limestone aggregate. Mixtures having three different water/binder (w/b) ratios (0.43, 0.48 and 0.53) were prepared. The properties of fresh concrete were determined by using the slump-flow, V-funnel and L-box tests. Compressive and splitting tensile strength, ultrasonic pulse velocity (UPV), water absorption, water sorptivity, chloride-ion penetration and freeze–thaw resistance of hardened concrete were determined. Test results indicate that in RCA containing mixtures, the viscosity of the SCC mixtures increased significantly. The compressive strength of SCC mixtures improved slightly with increasing the coarse RCA content up to 40%. In addition, water absorption and chloride-ion penetration of SCC mixtures increased slightly by the incorporation of RCA. On the other hand, the splitting tensile strength, unit weight, UPV, water sorptivity and freeze–thaw resistance of concrete decreased in RCA containing mixtures.
Freeze–thaw resistance, mechanical and transport properties of self-consolidating concrete incorporating coarse recycled concrete aggregate
Tuyan, Murat (author) / Mardani-Aghabaglou, Ali (author) / Ramyar, Kambiz (author)
2013-07-31
9 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2014
| British Library Online Contents | 2015