Durability of cementitious binder derived from industrial wastes

Abstract

A B S T R A C I R I~ S U M I~The durability of cementitious binder hydrated at 27~ and 50~ under high humidity was examined by alternate wetting and drying, as well as heating and cooling, cycles at temperatures ranging from 27~ to 60~ and by performance in water. The results show that cementitious binder hardened at 50~ possesses higher water resistance and lower porosity than the binder hardened at 27~ A decrease in the strength of the cementitious binder was observed with an increase in temperature and in the wetting and drying and heating and cooling cycles. The maximum decrease in strength occurred at 60~ The cementitious binder cured at 27~ showed a much smaller decrease in strength with a rise in temperature and in weathering cycles. The changes in strength of the cementitious binder were monitored by differential thermal analysis and microscopy. On a examind la durabilitd des mat&iaux liants hydrat& h

Development of sustainable construction material using industrial and agricultural solid waste: A review of waste-create bricks

“…Another advantage of lightweight bricks is reduced transportation costs [26]. The cementitious binder, fly ash-lime-gypsum (FaL-G), finds extensive application in the manufacturing of building components and materials such as bricks, hollow bricks and structural concretes [27][28][29][30][31][32][33][34][35][36]. The by-products and residues from pulp and paper industry are managed using several approaches including land filling, incineration, use in cement plant and brickworks, agricultural use and composting, anaerobic treatment, recycling and others [37][38][39].…”

A comparative study on the use of fly ash and phosphogypsum in the brick production

“…PG has limited utilization areas in construction sector due to the presence of undesirable impurities such as P 2 O 5 , fluorides, organic matter and alkalies (Singh & Garg 1997;Garg et al 1996). Utilization of PG has been researched in production of artificial aggregates and in road stabilization.…”

Fly ash-lime-phosphogypsum cementitious binder: A new trend in bricks

“…Several studies have been reported on utilization of FaL-G in bricks, blocks, and plain and reinforced concrete [2][3][4][5][6][7][8][9][10]. Bhanumathidas and Kalidas [5] were amongst the first who have reported the application of FaL-G in brick manufacturing.…”

“…Phosphogypsum is an important by-product of phosphoric acid fertilizer industry. Approximately 5 million tons of phosphogypsum is produced each year in India and causes serious storage and environmental problem [2].…”