Influence of Rice Husk Ash and Slag as Fillers in Asphalt Concrete Mixes

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Influence of Rice Husk Ash and Slag as Fillers in Asphalt Concrete Mixes

Journal Title: American journal of Engineering Research - Year 2017, Vol 6, Issue 1

Abstract

Filler is an important ingredient of asphalt concrete mixture. Cement, lime and stone dust are used as conventional fillers. In this study, an attempt has been made to assess the influence of non-conventional fillers such as rice husk ash and slag in bitumen paving mixes and also compared with traditional filler stone dust. From the experimental data, it is seen that specimen made with non-conventional fillers (e.g. slag, rice husk ash) are found to have satisfactory Marshall Properties, which are almost same as conventional filler (e.g. stone dust). The optimum asphalt content (5.5%) in case of slag and stone dust are same while for rice husk ash (5.83%), the same is slightly higher. It is seen that maximum stability is observed by rice husk ash followed by stone dust and slag as filler materials. The value of retained stability of the asphalt concrete mixture using stone dust, rice husk ash and slag are 112.2%, 111.52% and 95.68% respectively which satisfies the limiting value 75%. In addition, it has been recommended to use rice husk ash and slag wherever available, not only reducing the cost of execution, but also partly solve the solid waste disposal problem of the environment.

Authors and Affiliations

Rocksana Akter1 ,, Md. Kamal Hossain2

Keywords

EP ID EP399968
DOI -
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