STUDY ON STANDARAD CONCRETE BY USING METAKAOLIN
Keywords:
- Ordinary Portland cement (OPC), Partial replacement, Metakaolin, Structural Properties, ConcreteAbstract
— Metakaolin is a dehydroxylated form of the clay mineral kaolinite. Metakaolin is refined kaolin clay that is
fired (calcined) under carefully controlled conditions to create an amorphous aluminosilicat e that is reactive in concrete.
Metakaolin reacts with the calcium hydroxide (lime) byproducts produced during cement hydration. Calcined between
600° and 850°C the kaolin is transformed to an amorphous phase called Metakaolin. This mineral is activated and
metastable. Metakaolin can then react with cement and lime. Heating above 900°C produces mullite, a non pozzolanic
material. The study is to investigate the mechanical properties of Normal concrete with different replacement levels of
ordinary Portland cement by Metakaolin. The standard cubes (150mmX150mmX150mm) were caste. In all specimens
with M25 grade mix proportional (1:1:2) cases were caste and tested. The material testing lick cement, fine aggregate
(Sand) and coarse aggregate (Kapchi). The strength effect of Normal concrete of various amounts of replacement of
cement viz., 0%, 3%, 5% with Metakaolin of M25 grades were compared with that of the Normal concrete without
Metakaolin. The compressive strength at 7 and 28 Days have been obtained.
