Mechanical Properties of Fly-Ash and GGBS based Geo-Polymer Concrete Incorporate Black Marble Waste Aggregate

  • S. Pradeep Kumar, B. Kameswara Rao, J. Guru Jawahar


In construction industry Natural Coarse Aggregate is very essential component in concrete. It plays a
major role in knowing the strength and longevity characteristics, it occupies two-third of its volume
in concrete. Due to rapid increasing the deployment of Natural coarse Aggregate (NCA) in concrete
is becoming an expansive, lead to quick decrease in the existing natural assets. The huge production
is considerable amount of coarse material which has unfavourable to environment. In the meantime
the utilization of cement in concrete also releases large amount of CO2 to the environment. Due to
these environmental issues GPC (Geopolymer Concrete) is the alternative binder to replace
conventional concrete. The objective of this study is to replace the NCA (Natural Coarse Aggregate)
with BMWA (Black Marble Waste Aggregate) in Geopolymer concrete. The NCA is replaced with
BMWA in various percentages (0, 50 and 100%) to identify compressive strength, split tensile
strength and flexural strength of GPC. The variable factors that are considered, including
concentration of NaoH, curing methods and curing periods. It is experimental results shows that
increased levels of BMWA increases the mechanical functionalities of GPC under water curing and
decreases under ambient curing at different curing periods and molars.