Using Treated Recycled Demolition Aggregate in Concrete

Ragab, Safana Qahtan and Mohammed, Hasan Jasim (2022) Using Treated Recycled Demolition Aggregate in Concrete. In: IMDC-IST 2021, 7-9 September 2021, Sakarya, Turkey.

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The investigation focuses on the mechanical properties of treated recycled demolition aggregate, which was treated in two ways: one by immersing recycled demolition aggregate in NaOH solution for 24 hours and the other soaking in cement neat. The mixes were produced by substituting treated recycled demolition aggregate for 0%, 20%, 40%, and 60% of the coarse aggregate weight in both methods. The cement weight is replaced with 10% silica fume. The following tests were performed: compressive strength, splitting tensile strength, modulus of rupture, and density. Treated recycled demolition aggregate concrete compressive strength and modulus of rupture increased by 61% and 27%, respectively, as the treated recycled demolition aggregate ratio increased. Treated recycled demolition aggregate concrete has a lower tensile strength and density than normal concrete by 17 % and 12.5 %, respectively. Treated recycled demolition aggregate is appropriate for use in concrete and meets all criteria.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Treated recycled demolition aggregate, coarse aggregate, NaOH, Cement neat, Mechanical properties.
Subjects: T Technology > T Technology (General)
Depositing User: EAI Editor IV
Date Deposited: 29 Apr 2022 12:33
Last Modified: 29 Apr 2022 12:33

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