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A platform for research: civil engineering, architecture and urbanism
Utilization of ground granulated blast furnace slag as partial cement replacement in lightweight oil palm shell concrete
Abstract The effect of replacing 20–70 % of ordinary Portland cement (OPC) by ground granulated blast furnace slag (GGBS) on the mechanical properties, weight loss and carbon footprint of oil palm shell concrete (OPSC) has been investigated. The highest replacement level of 70 % of OPC with GGBS was found to have significant effect on carbon footprint as the OPSC emits about 0.23 t $ CO_{2} $-e/$ m^{3} $ compared to 0.44 t $ CO_{2} $-e/$ m^{3} $ for normal weight concrete (NWC). The eco-efficiency of OPSC, assessed based on the eco-strength indicator (Ies), was found to be improved by 60 % compared to NWC. The GGBS replacement between 20–40 % leads to slight reduction in the mechanical properties of OPSC. Nevertheless, grade 40 OPSC could be achieved with upto 40 % GGBS replacement as well as producing 20 % higher strength to density ratio compared to NWC. All the OPSC mixes showed 28 days UPV values exceeding 4.0 km/s, an indication that the concrete was of good quality.
Utilization of ground granulated blast furnace slag as partial cement replacement in lightweight oil palm shell concrete
Abstract The effect of replacing 20–70 % of ordinary Portland cement (OPC) by ground granulated blast furnace slag (GGBS) on the mechanical properties, weight loss and carbon footprint of oil palm shell concrete (OPSC) has been investigated. The highest replacement level of 70 % of OPC with GGBS was found to have significant effect on carbon footprint as the OPSC emits about 0.23 t $ CO_{2} $-e/$ m^{3} $ compared to 0.44 t $ CO_{2} $-e/$ m^{3} $ for normal weight concrete (NWC). The eco-efficiency of OPSC, assessed based on the eco-strength indicator (Ies), was found to be improved by 60 % compared to NWC. The GGBS replacement between 20–40 % leads to slight reduction in the mechanical properties of OPSC. Nevertheless, grade 40 OPSC could be achieved with upto 40 % GGBS replacement as well as producing 20 % higher strength to density ratio compared to NWC. All the OPSC mixes showed 28 days UPV values exceeding 4.0 km/s, an indication that the concrete was of good quality.
Utilization of ground granulated blast furnace slag as partial cement replacement in lightweight oil palm shell concrete
Mo, Kim Hung (author) / Alengaram, U. Johnson (author) / Jumaat, Mohd Zamin (author)
2014
Article (Journal)
English
| British Library Online Contents | 2015