TITLE:
Effect of Red Mud (RM) Reinforcement on Physio-Chemical Characteristics of Ordinary Portland Slag Cement (OPSC) Mortar
AUTHORS:
Harekrushna Sutar, Rabiranjan Murmu, Debashis Roy, Subash Chandra Mishra, Asmita Mishra
KEYWORDS:
Red Mud, Cement, Compressive Strength, XRD, FTIR, SEM
JOURNAL NAME:
Advances in Materials Physics and Chemistry,
Vol.6 No.8,
July
28,
2016
ABSTRACT: The investigation focuses on evaluating
the effect of varying % of Red Mud (RM) reinforcement with Ordinary Portland Slag
Cement (OPSC). Characterisation is done by adding 10%, 20%, 30%, 40% and 50% of
RM by weight to OPSC. RM + OPSC composite mortars are made in an 8.5 × 5 × 4 cm3 cast iron mould with external vibration keeping
water-binder ratio 0.4 by weight. The mortars are cured in water for 28 days
and their physio-chemical characteristics are investigated. Mortar performances
like compressive strength, hardness, XRD, FTIR, SEM are diagnosed. The
composite mortars cementing properties are compared with original OPSC. The
result reveals the augmentation of RM with OPSC increases the hydration capacity
of OPSC with improved compressive strength. The experimental optimization shows
a maximum value up to 10% - 20% OPSC can be replaced by RM as filling material.