STUDY OF METAKAOLIN FIBRE AND POND ASH AS A REPLACEMENT TO CEMENT IN CONVENTIONAL CONCRETE

Brijesh Soni, Ritesh Lahoti

Abstract: Concrete is probably the most extensively used construction material in the world. The addition of mineral admixture and cement has dramatically increased along with the development of concretre industry due to the consideration of cost saving, energy saving, environmental protection and conservation of resources. However, environmental concerns both in terms of damage cost by the extraction of raw materials and carbon dioxide emission during cement manufacture have brought pressures to reduce cement consumption by the use of supplementary materials. So, to minimize the use of cement, there is a constant urge to find alternatives for cement. In recent years, there is an increase in the utilization of Metakaolin Fibre in concrete as replacement to cement by weight. Which has proven an increased compressive strength of atleast 10 to 20 %. However, the cost of Metakaolin Fibre is significantly higher than that of cement (3 to 4 times higher). So, taking into consideration the cost component of concrete, Pond Ash/ Fly Ash which is available in abundance and which is very cheap is used along with Metakaolin Fibre in preparation of concrete. The present report deals with the study of compressive strength of M25 grade concrete incorporating different percentage of Metakaolin Fibre by weight of cement along with pond ash. The results of study indicate that the strength of concrete mixes improved by 20-25%which also mitigate the higher costs required by Metakaolin Fibre.

Keywords: Metakaolin Fibre, Pond Ash/ Fly Ash, Compressive Strength, M25 Grade Concrete

DOI: https://doi.org/10.15623/ijret.2016.0510008