Concrete is a versatile construction material. For more durable and
strong structures, the concrete of high strength is required. To
make concrete more strong, pozzolans are added to concrete.
Metakaolin ( MK ) is a pozzolana used to achieve the required
strength. The present study investigates the characteristics
strength of concrete due to partial replacement of cement by MK and
addition of polypropylene fibres (PPF). M30 concrete was designed
according to BIS guidelines. The investigation was carried out on
concrete containing MK and PPF at various proportions of 0%, 7%, 8%
and 9% of MK and 0%, 0.2%, 0.5% and 0.8% of PPF. Fly ash (10%) and
superplasticizer (0.7%) has been added to improve the workability
of concrete. In present study, the results of X-ray diffraction
(XRD) analysis of concrete containing metakaolin and fly ash were
analysed. Analysis of cement, metakaolin and fly ash was done with
XRD. Samples K0, K4, K8 and K12 containing 0%, 7%, 8% and 9% MK (by
weight of cement) respectively at the sample age of 1 day were also
analysed with XRD.
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