Impact strength of rice husk ash and basalt fibre based sustainable geopolymer concrete in rigid pavements

Abstract

In this analysis, the alkaline activators prepared by mixing sodium hydroxide and sodium silicate and rice husk ash (RHA) were used as the source material in geopolymer concrete. As fibre reinforcement in geopolymer concrete, basalt fibres (B.F.s) were used. Silica luxurious RHA and alumina luxurious B.F.s proved the best mishmash for rigid pavement abrasion resistance. The ratio of sodium silicate (sdsi) to sodium hydroxide (sdhd), alkaline activator to binder content was maintained as 2.0 and 0.4 respectively, the concentration of sodium hydroxide was maintained as 14 M, the fluidity of geopolymer concrete was improved by superplasticizer, and RHA used was 500 kg/m3 in MRM (control mix which is rice husk ash based geopolymer concrete without basalt fibres). B.F.s were used as 1, 5, 10, 15, 20, and 25 per cent by weight of RHA in the MB1, MB5, MB10, MB15, MB20 and MB25 combinations, and the results of B.F.'s blends were compared with the MRM. The results showed that, relative to the control mix and all other mixes, the impact strength in mix MB10 was high. In contrast to the MRM control combination, the seven, twenty-eight, and ninety-day impact strength of MB10 showed a substantial increase of more than 88, 89, and 92 per cent, respectively.