Comparison On Compressive Strength Of Concrete By Using New Aggregates And Recycled Aggregates

Abstract

Concrete construction is becoming increasingly complex and the importance of producing structures that are both cost effective and durable has never been higher. Many experimental works have been performed to determine the compressive strength of different types of brick. The objectives of the study are to determine the compressive strength of concrete by using two different types of brick for two different grades M15 & M20. The Materials used for the experiment are new aggregates & recycled aggregates, fine aggregate & water. The mass of the specimens was recorded carefully. For 7 days, the values of compressive strength of concrete for new aggregates & recycled aggregates are 10.12 MPa for (new aggregates100%), 5.8 MPa for (recycled aggregates100%), 8.46 MPa for (new aggregates 50% & recycled aggregates 50%), 7.23 MPa for (new aggregates 25% & recycled aggregates 75%), respectively of grade M15. 12.2 MPa for (new aggregates 100%), 7.8 MPa for (recycled aggregates 100%), 9.3 MPa for (new aggregates 50% & recycled aggregates 50%), 8.39 MPa for (new aggregates 25% & recycled aggregates 75%), respectively of grade M20. For 14 days, the values are 11.03 MPa for (new aggregates100%), 7.64 MPa for (recycled aggregates100%), 9.27 MPa for (new aggregates 50% & recycled aggregates 50%), 8.77 MPa for (new aggregates 25% & recycled aggregates 75%), respectively of grade M15. 12.75 MPa for (new aggregates 100%), 10.06 MPa for (recycled aggregates 100%), 11.07 MPa for (new aggregates 50% & recycled aggregates 50%), 10.86 MPa for (new aggregates 25% & recycled aggregates 75%), respectively of grade M20. For 28 days, 14.7 MPa for (new aggregates 100%), 10.26 MPa for (recycled aggregates 100%), 11.4 MPa for (new aggregates50% & recycled aggregates 50%), 10.52 MPa for (new aggregates 25% & recycled aggregates 75%), respectively of grade M15. 18.84 MPa for (new aggregates100%), 13.4 MPa for recycled aggregates 100%), 15.73 MPa for (new aggregates 50% & recycled aggregates 50%), 14.37 MPa for (new aggregates 25% & recycled aggregates 75%), respectively of grade M20. respectively for the same types of new aggregates and recycled aggregates of grade M15. For 7 days, the highest compressive strength of the concrete found 10.12 MPa for new aggregates of grade M15 and the lowest compressive strength is 5.8 MPa for recycled aggregates of grade M15