Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Quantification of concrete aggregate liberation through abrasion comminution
Recycling concrete waste into structural concrete reduces the consumption of raw materials, decreases transport and production energy costs, and saves the use of limited landfill space. Since attached mortar is known for lowering the performance of recycled concrete aggregates (RCA) in concrete applications, current recycling involves the use of RCA as a road base material or in non-structural concrete with low strength requirements, therefore, the application in structural concrete is limited. In general, the applicability of RCA is improved by comminution through various crushing methods. Hereby, the parent particles are cleaved or shattered into a minimum of two particles with a comparable size and a number of much smaller particles. Through this technique, both mortar and aggregates fracture alike, resulting solely in a size reduction. However, to minimise undesirable effects, original natural aggregates (ONA) have to be cleared from attached mortar. Through the use of attrition and shear instead of pressure or impact, surface layers, edges and corners are removed thereby producing particles both slightly smaller and much smaller than the initial. In this study, ONA liberation through abrasion was investigated.
Quantification of concrete aggregate liberation through abrasion comminution
Recycling concrete waste into structural concrete reduces the consumption of raw materials, decreases transport and production energy costs, and saves the use of limited landfill space. Since attached mortar is known for lowering the performance of recycled concrete aggregates (RCA) in concrete applications, current recycling involves the use of RCA as a road base material or in non-structural concrete with low strength requirements, therefore, the application in structural concrete is limited. In general, the applicability of RCA is improved by comminution through various crushing methods. Hereby, the parent particles are cleaved or shattered into a minimum of two particles with a comparable size and a number of much smaller particles. Through this technique, both mortar and aggregates fracture alike, resulting solely in a size reduction. However, to minimise undesirable effects, original natural aggregates (ONA) have to be cleared from attached mortar. Through the use of attrition and shear instead of pressure or impact, surface layers, edges and corners are removed thereby producing particles both slightly smaller and much smaller than the initial. In this study, ONA liberation through abrasion was investigated.
Quantification of concrete aggregate liberation through abrasion comminution
van de Wouw, Perry (Autor:in) / Florea, Miruna (Autor:in) / Brouwers, Jos (Autor:in)
01.11.2017
van de Wouw , P , Florea , M & Brouwers , J 2017 , Quantification of concrete aggregate liberation through abrasion comminution . in Proceedings of the 9th International Conference on Cement and Concrete (ISCC 2017) . , A137 , pp. 1-8 , 9th International Symposium on Cement and Concrete (ISCC 2017), 31 October - 3 November 2017, Wuhan, China , Wuhan , China , 31/10/17 .
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Liberation of original natural aggregates from recycled concrete by abrasion comminution
| BASE | 2017
Abrasion Resistance of Fine Aggregate-Replaced Silica Fume Concrete
| Online Contents | 1999
Abrasion Resistance of Fine Aggregate Replaced Silica Fume Concrete
| British Library Online Contents | 1999
| British Library Online Contents | 2018