Application of rice husk ash in high strength concrete

Abstract

Rice husk ash waste would cause dangerous environmental problems in soil and air. One of the solutions to overcome the environmental impact of rice husk ash is by processing it into a partial substitute for cement. The purpose of this study was to analyze the compressive strength of high strength concrete. The method used was experimental research by utilizing rice husk ash as a cement substitute in concrete with a percentage of 0%, 5%, 10%, 15%, 20%, and the addition of superplasticizer. The test object was made with a diameter of 10 cm and a height of 20 cm. The test object was treated using clean water. The strength of concrete with rice husk ash as a cement substitute was tested based on absorption and compressive strength of concrete on day 7 and day 28. Thus, the optimum compressive strength was obtained in the variation of 10% rice husk ash as the cement substitution. Based on this study, the highest average compressive strength was found in concrete with a variation of 10% rice husk ash, which was 38.5 MPa at 7 days and 56.2 MPa at 28 days.

Performance of high strength concrete containing locust bean pod ash as cement replacement

“…The reduction in compressive strength at higher level of LBPA may be as a result of clinker dilution effect [57]. The optimum replacement level is 10% in agreement with [19] and [58] who utilized RHA and (MK) in HSC respectively.…”

“…It is characteristically used in applications where high strength and/or durability are required, such as high-rise buildings and bridges. It is advantageous over normal concrete due to better workability, greater strength and improved durability [19]. Pozzolans, such as fly ash and silica fume, are commonly employed as SCMs in HSC.…”

“…These compounds enhance the strength of concrete by interacting with the hydration products of Portland cement, resulting in the production of more C-S-H gel, which is the constituent responsible for providing concrete with its strength [20]. For instance, in their study, [19] included rice husk ash (RHA) as a replacement for cement in HSC. The varying percentages of rice husk ash used were 0%, 5%, 10%, 15%, and 20%.…”

Pengaruh Penggunaan Abu Sekam Padi dan Limbah Granit Terhadap Kuat Tekan Beton

“…Penelitian yang bertujuan untuk mengetahui karakteristik kuat tekan beton yang menggunakan abu sekam padi telah dilakukan oleh Nursyamsi (2021). Penggunaan abu sekam padi sebagai subtitusi semen sebesar 0%, 5%, 10%, 15% dan 20% menghasilkan kuat tekan 44,83 MPa,51,53 MPa,56,20 MPa,45,63 MPa,32,30 MPa.…”

Enhancing Subgrade Efficiency with Industrial Ash & Geotextile Combinations for Economical Pavement Solutions

“…It is possible to reduce the environmental impact of rice husk ash waste and lower CO2 emissions by partially substituting it for cement. Rice husk ash, abundant in silica content, is produced through the combustion of rice husks, and its pozzolanic qualities increase the strength of concrete (12).…”