01336748

Component

This study presents the characteristics of Municipal Solid Waste (MSW) incineration ash obtained from electric energy generation place, to evaluate the MSW ash applicability in base road pavements layers through the ash mixture with a non-lateritic regional clay soil. Chemical, physical, mechanical tests and the mechanistic-empirical design for a typical pavement structure were carried out on the pure soil and also in the soil mixture with the addition of different ash content (20 and 40%). The addition of MSW ash had a consistent mechanical behavior to be used on low traffic volume road pavements. Fly ash reduced the expansion of the material, showing a substantial increase in the California bearing ratio (CBR) value. The results show that the fly ash addition with a mixture cure increase the value of resilient modulus, which is revealed by the decrease in thickness of the base layer, compared to pure soil for the same level of loading and the same design requirements. The results were satisfactory, being dependent on the content of ash used, highlighting the positive work of MSW fly ash for use in base road pavement layers, eliminating the current problems of waste disposal in landfills, giving a noble use for this material. It is noteworthy that studies on the use of such waste in pavements are rare and this research adds to an exploratory knowledge of its potential applicability.

01329018

11-2952

English

15p

2011

Transportation Research Board 90th Annual Meeting

DVD

Figures; Photos; References (12) ; Tables (5)

Asphalt mixtures; California bearing ratio; Fly ash; Low volume roads; Mechanistic-empirical pavement design; Modulus of resilience; Pavement design; Pavement layers; Recycled materials; Solid wastes; Subbase (Pavements); Wastes

Highways; Materials; Pavements; I33: Other Materials used in Pavement Layers

Transportation Research Board Annual Meeting 2011 Paper #11-2952

TRIS, TRB

Feb 17 2011 6:21PM