Volume 6 Issue 4 - March 2016

  • 1. Effect of industrial byproducts such as fly ash and rice husk ash on the performance of cement sand mortar

    Authors : Prafulla Nandekar, Bhupesh Nandurkar

    Pages : 531-536

    Keywords : Fly ash, rice husk ash, mortar, compressive strength, drying shrinkage & water absorption.

    Abstract :

    : The paper is based on project work, which was carried out to study mechanical properties and performance of mortars made with ordinary Portland cement (OPC) of grade 43, fly ash (FA) and rice husk ash (RHA). OPC were replaced upto 40% by weight and compressive strength, water absorption and drying shrinkage were tested as per Indian standard specification. The objective of this research is to study the mechanical properties of cement sand mortar when FA and RHA were used as admixture in mortar. The compressive strength, drying shrinkage and water absorption were determined and compared with the controlled mortar. The proportion of mortar was taken 1:5, i.e., 1 part of cement and or fly ash and or rice husk ash(binder) and 5 part of sand. Two type of mortars combination were prepared, cement with FA, cement with RHA of different proportion. Compressive strength tests were conducted at 3,7,28 and 90 days of curing. Water binder ratio was taken as for control mix 0.80 and for 20%, 25%, 30%, 35%, 40% FA and RHA water binder ratio was taken as 0.80, 0.75, 0.70, 0.65, 0.60 and 0.70, 0.80, 0.90, 0.95, 0.100. The result shows that the use of FA improve 90 day compressive strength in general while use of RHA is recommended due to erratic behavior at higher dosages. RHA has good effect in reducing shrinkage. Effective use of FA and RHA is recommended in this paper as a step toward getting high performance masonry mortar.

    Citing this Journal Article :

    Prafulla Nandekar, Bhupesh Nandurkar, "Effect of industrial byproducts such as fly ash and rice husk ash on the performance of cement sand mortar", https://www.ijltet.org/journal_details.php?id=899&j_id=3000, Volume 6 Issue 4 - March 2016, 531-536, #ijltetorg