A state of large landfill areas redevelopment program in many parts of the country has cause to bring the use of recycled aggregate. The low quality of recycled aggregate has not use to low-grade applications such as roadwork sub-base and pavements, while its adoption for higher-grade concrete is rare because of the lower compressive strength and higher in mechanical performance of recycled aggregate. A new method, that is the two-stage mixing approach (TSMA), was publically recommends to improve the quality of recycled aggregate concrete (RAC) by splitting the mixing process into two stages. The variation of compressive strength by experiments involves new mixing method with the two-stage mixing approach by various proportion ingredients with varying percentage of fly ash and rice husk ash and with the constant percentage of recycled coarse aggregates (RCA). Based on experimental works and results, improvements in strength to fly ash, Rice husk ash and RCA were achieved with TSMA. This can be regarded as to the porous in nature of RA and the mixing process that fills up some of pores and cracks, resulting in a denser aggregate and concrete. An good RA gives a higher strength than the normal mixing approach (NMA).
Concrete, fly ash, Rice husk ash, Rapid hardening cement, Recycled aggregate, Two stage mixing approach (TSMA), Normal mixing approach (NMA).
Purva B. Dhengare , DR. P. P. Saklecha , Prof. R. S. Kedar "Comparison of Strength Characteristics of Concrete by Using Fly Ash and Rice Husk Ash" Iconic Research And Engineering Journals Volume 4 Issue 10 2021 Page 18-22
Purva B. Dhengare , DR. P. P. Saklecha , Prof. R. S. Kedar "Comparison of Strength Characteristics of Concrete by Using Fly Ash and Rice Husk Ash" Iconic Research And Engineering Journals, 4(10)