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Properties of ternary blended cement containing ground granulated blast furnace slag and ground coal bottom ash
Highlights Properties of OPC-GGBS-GCBA ternary blended mortars. Optimum combination ratio is 45% GGBS and 5% GCBA without chemical admixture. Optimum combination is 40% GGBS and 10% GCBA with chemical admixture. Up to 15% of GCBA can retain the strength and fluid transport properties. GGBS and GCBA improve the physical and engineering properties of mortar. Presence of GCBA lead to denser microstructure of the hardened mortar.
Abstract The combination of ground granulated blast furnace slag (GGBS) and ground coal bottom ash (GCBA) as cement replacement material is not reported in the present works on ternary blended cement. Therefore, the present work was aimed to assess the physical and mechanical properties of cement containing GGBS and GCBA at various cement replacement ratios. GCBA was used as cement replacement material between 0 and 20% by weight of binder in GGBS blended cement. The mechanical and fluid transport properties of the mortar was examined. The slag activity index (SAI) result revealed that the optimum binder combination ratio for mortar was 45% OPC, 50% GGBS and 5% GCBA. The result of mortar flow shows that 0.6% of polycarboxylate ether (PCE) superplasticizer is the optimum dosage for ternary blended paste consisting up to 10% of GCBA. The optimum cement replacement level with GCBA was 10% when water to binder ratio was fixed at 0.4. The incorporation of GCBA as cement replacement material in combination with GGBS enhanced both the mechanical and physical properties as compared to GGBS binary blended cement mortar.
Properties of ternary blended cement containing ground granulated blast furnace slag and ground coal bottom ash
Highlights Properties of OPC-GGBS-GCBA ternary blended mortars. Optimum combination ratio is 45% GGBS and 5% GCBA without chemical admixture. Optimum combination is 40% GGBS and 10% GCBA with chemical admixture. Up to 15% of GCBA can retain the strength and fluid transport properties. GGBS and GCBA improve the physical and engineering properties of mortar. Presence of GCBA lead to denser microstructure of the hardened mortar.
Abstract The combination of ground granulated blast furnace slag (GGBS) and ground coal bottom ash (GCBA) as cement replacement material is not reported in the present works on ternary blended cement. Therefore, the present work was aimed to assess the physical and mechanical properties of cement containing GGBS and GCBA at various cement replacement ratios. GCBA was used as cement replacement material between 0 and 20% by weight of binder in GGBS blended cement. The mechanical and fluid transport properties of the mortar was examined. The slag activity index (SAI) result revealed that the optimum binder combination ratio for mortar was 45% OPC, 50% GGBS and 5% GCBA. The result of mortar flow shows that 0.6% of polycarboxylate ether (PCE) superplasticizer is the optimum dosage for ternary blended paste consisting up to 10% of GCBA. The optimum cement replacement level with GCBA was 10% when water to binder ratio was fixed at 0.4. The incorporation of GCBA as cement replacement material in combination with GGBS enhanced both the mechanical and physical properties as compared to GGBS binary blended cement mortar.
Properties of ternary blended cement containing ground granulated blast furnace slag and ground coal bottom ash
Cheah, Chee Ban (author) / Liew, Jia Jia (author) / Khaw Le Ping, Kevin (author) / Siddique, Rafat (author) / Tangchirapat, Weerachart (author)
2021-10-10
Article (Journal)
Electronic Resource
English
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