Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental Investigation on Mechanical Properties of Recycled Geopolymer Concrete Aggregates-Based Geopolymer Concrete (M40 Grade)
The present work endeavours an assessment on the performance of geopolymer concrete (GPC) that makes use of Recycled Concrete Aggregates (RCA) as replacement to Natural Coarse Aggregates (NCA). GPC mix was designed for a strength grade of M40 by using class-F Fly Ash (FA) and Ground Granulated Blast Furnace Slag (GBFS) as binding material by maintaining with ratio of 50:50 and solution to binder ratio of 0.45 having NaOH concentration of 14M. The NCA are replaced with RCA at an interval of 25% till 100% replacement, the workability and mechanical properties were studied. The results show that replacing 25% of NCA with RCA in geopolymer concrete mixes results in relatively minor change in mechanical characteristics. Furthermore, increase of RCA replacement is observed to have a significant negative impact on the characteristics of geopolymer concrete. Compressive strength of 49.3 MPa at 28 days was achieved for 50% RCA-based geopolymer concrete of M40 grade. The replacement level of 50% RCA was the feasible limit for producing M40 grade sustainable geopolymer concrete.
Experimental Investigation on Mechanical Properties of Recycled Geopolymer Concrete Aggregates-Based Geopolymer Concrete (M40 Grade)
The present work endeavours an assessment on the performance of geopolymer concrete (GPC) that makes use of Recycled Concrete Aggregates (RCA) as replacement to Natural Coarse Aggregates (NCA). GPC mix was designed for a strength grade of M40 by using class-F Fly Ash (FA) and Ground Granulated Blast Furnace Slag (GBFS) as binding material by maintaining with ratio of 50:50 and solution to binder ratio of 0.45 having NaOH concentration of 14M. The NCA are replaced with RCA at an interval of 25% till 100% replacement, the workability and mechanical properties were studied. The results show that replacing 25% of NCA with RCA in geopolymer concrete mixes results in relatively minor change in mechanical characteristics. Furthermore, increase of RCA replacement is observed to have a significant negative impact on the characteristics of geopolymer concrete. Compressive strength of 49.3 MPa at 28 days was achieved for 50% RCA-based geopolymer concrete of M40 grade. The replacement level of 50% RCA was the feasible limit for producing M40 grade sustainable geopolymer concrete.
Experimental Investigation on Mechanical Properties of Recycled Geopolymer Concrete Aggregates-Based Geopolymer Concrete (M40 Grade)
Lecture Notes in Civil Engineering
Pancharathi, Rathish Kumar (Herausgeber:in) / K. Y. Leung, Christopher (Herausgeber:in) / Chandra Kishen, J. M. (Herausgeber:in) / Kumar, N. S. M. Ravi (Autor:in) / Kumar, Prince (Autor:in) / Rao, S. Venkateswara (Autor:in)
International Conference on Cement and Building Koncrete for a Sustainable and Resilient Infrastructure ; 2023 ; Telangana, India
Low Carbon Materials and Technologies for a Sustainable and Resilient Infrastructure ; Kapitel: 29 ; 395-405
23.01.2024
11 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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