Compressive strength and durability properties of ceramic wastes based concrete |
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Authors: | Fernando Pacheco-Torgal Said Jalali |
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Affiliation: | (1) C-TAC Research Unit, University of Minho, 4800 Guimaraes, Portugal;(2) Department of Civil Engineering, University of Minho, 4800 Guimaraes, Portugal |
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Abstract: | This paper presents an experimental study on the properties and on the durability of concrete containing ceramic wastes. Several
concrete mixes possessing a target mean compressive strength of 30 MPa were prepared with 20% cement replacement by ceramic
powder (W/B = 0.6). A concrete mix with ceramic sand and granite aggregates were also prepared as well as a concrete mix with
natural sand and coarse ceramic aggregates (W/B = 0.5). The mechanical and durability performance of ceramic waste based concrete
are assessed by means of mechanical tests, water performance, permeability, chloride diffusion and also accelerated aging
tests. Results show that concrete with partial cement replacement by ceramic powder although it has minor strength loss possess
increase durability performance. Results also shows that concrete mixtures with ceramic aggregates perform better than the
control concrete mixtures concerning compressive strength, capillarity water absorption, oxygen permeability and chloride
diffusion. The replacement of cement and aggregates in concrete by ceramic wastes will have major environmental benefits. |
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