4th International Engineering Conference on Developments in Civil & Computer Engineering Applications (IEC2018)
Title: APPLICATION OF NANO MATERIALS TO ENHANCE MECHANICAL PERFORMANCE AND MICROSTRUCTURE OF RECYCLED AGGREGATE CONCRETE.
Authors: Khaleel H. Younis, Shelan Muhammed Mustafa
DOI: 10.23918/iec2018.10
Abstract: The use of recycled aggregate in the production of concrete could enhance
sustainability of concrete. This study aims at investigating the influence of using
nanoparticles of SiO2 to improve the behavior of recycled aggregate concrete (RAC)
containing recycled aggregate (RA) derived from processing construction and
demolition waste of concrete buildings. The examined properties included
compressive strength and the microstructure of RA and RAC with and without
nanoparticles of SiO2. Nine mixes: one control mix with natural aggregate without
nanoparticles, two mixes with RA at 50% and 100% contents (without
nanoparticles) and three mixes for each content of RA with nanoparticles content of
0.4, 0.8 and 1.2% (by mass of cement) were investigated. The results showed that
nanoparticles of silica can improve the compressive strength and modify the
microstructure of RAC.
Keywords: Nanoparticles SiO2, Compressive strength, Recycled aggregate, SEM
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