Strength Characteristics of Cement Mortar wit...

Strength Characteristics of Cement Mortar with Thermally Treated Bentonite Clay

Author Name : Mr. Balasreeram K S, Dr. Sunilaa George

ABSTRACT In modern civilization cement is main binding material and the most using construction material all over the world. Its manufacturing pollutes the atmosphere with carbon dioxide. Production of Portland cement not only releases carbon dioxide, the cement industry also uses a lot of natural resources such as limestone, clay, petroleum, coal and other substance. This has led to the concept of using mineral admixtures in concrete. Nowadays there are many mineral admixtures are available such as fly ash, rice husk, GGBS etc., Bentonite is considered in this paper to mix with cement mortar to study its effectiveness as a mineral admixture in cement mortar with Ordinary Portland cement (OPC).The present study is to investigate the potential use of Bentonite to evaluate its impact on various strength of ordinary Portland Concrete (OPC). The Mortar was partial replacement as well as additive to cement by mineral admixture bentonite clay mixture and thermally treated bentonite at 800oC. The ratio of replacement of cement is varied from 0% to 20% with increment of 5% and ratio of additive mixture of cement is varied from 0% to 10% with increment of 2%. The compressive strength and split tensile strength were found for the specimens the present investigation is to study the effect of bentonite and clay on mortar. It is found that the mortar with addition of Heated Bentonite Clay at 8% shows better performance when compared to other sample mixtures. The compressive strength and split tensile strength at addition of 8% heated bentonite clay is found optimum