01155699

Component

This paper studied different size-distribution of recycled coarse aggregates by fractal theory. Concrete with different aggregate gradations were prepared by preparing different fractal rate of aggregate gradations. The slump, compressive strength, flexural strength and split tensile strength were tested. The results indicated that recycled aggregate concrete performance of the same fractal dimension is different when the max particle size is different. Recycled aggregate concrete with high fractal dimension D had better self compacting fill performance, higher slump and better liquidity. But due to large amount of waste cement mortar in recycled aggregate, as the D increased, the slump of the recycled aggregate concrete increased first and then decreased. When the maximum particle size was different, the performance of recycled concrete with same fractal dimension was different. For the same fractal dimension, recycled concrete with smaller maximum particle size had higher strength.

01147878

10-3553

English

16p

2010

Transportation Research Board 89th Annual Meeting

DVD

Figures (6) ; References (6) ; Tables (2)

Aggregates; Cement mortars; Compressive strength; Concrete; Flexural strength; Fractals; Laboratory tests; Recycled materials; Self compacting concrete; Slump test; Tensile strength; Waste products (Materials)

Highways; Materials; Pavements; I31: Bituminous Binders and Materials; I32: Concrete; I52: Construction of Pavements and Surfacings

Transportation Research Board Annual Meeting 2010 Paper #10-3553

TRIS, TRB

Jan 25 2010 11:48AM