Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 31, Issue -, Pages 197-203Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2011.12.110
Keywords
Alkali silica reaction; Cement mortar; Glass waste; Mechanical strength; Red-clay ceramic waste
Categories
Funding
- Fundacao para Ciencia e Tecnologia [POCI/ECM/55588/2004]
- Fundação para a Ciência e a Tecnologia [POCI/ECM/55588/2004] Funding Source: FCT
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The objective of this experimental study was to examine the possibility of reusing ceramic materials waste from container glass, bricks and tiles of red-clay ceramic industry in Portugal as partial cement replacement in mortar and concrete. The different types of waste were finely ground to specific sizes (0-45 mu m, 45-75 mu m and 75-150 mu m) and its pozzolanic activity was determined. The reduction of glass and ceramic waste particle size was accomplished in the laboratory by crushing and grinding using a ball jar mill. After gridding, the fine waste materials were characterized by the determination of density, Blaine fineness and particle morphology using scanning electrical microscope. The compressive strength activity index, at 7,28 and 90 days, was determined in mortars produced with each finely grounded waste ceramics and different percentages of partial cement replacement. Standard ASTM accelerated mortar bar tests and a modified test carried on in 40 x 40 x 160 mm size mortar specimens were performed to investigate the potential expansion caused by the alkali-silica reaction of finely grounded waste glass as partially cement replacement. The results obtained confirm the pozzolanic activity of the grounded waste, collected in the central region of Portugal, making feasible their incorporation as cement mortars and concrete components. (C) 2012 Elsevier Ltd. All rights reserved.
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