Reducing Asphalt Pavement Swell and Loss in Stability Due To Submergence in Moisture Using Polystyrene As Hydro-Carbon Additive: Study On Nigerian Roads In The Niger Delta Region
Journal Title: American journal of Engineering Research - Year 2018, Vol 7, Issue 3
Abstract
Laboratory investigation of asphalt pavement was carried out in order to ascertain the properties of swell and loss in stability that will occur when under submergence of water between 1 – 5 days. Secondly, the study was to also assess the contribution of polystyrene as a hydro carbon in asphalt pavements when fully submerged during the aforesaid duration. The focus of the study was limited to the Niger Delta Regions of Nigeria owing to the fact that the region constantly experiences excessive rainfalls annually leading to pavement submergence most times. The study was simulated by using hot mix asphalt concretes in the laboratory which is used synonymously with asphalt pavements. The results revealed that the addition of polystyrene to asphalt concrete mixture up to 2.5% reduced swell by 60.61% at day 1 soaking; 63.52% at day 2 soaking; 66.52% at day 3 soaking; 66.90% at day 4 soaking and 65.60% at day 5 respectively. Similarly, loss in stability was reduced by 24.05% at day 1 soaking; 27.66% at day 2 soaking; 35.75% at day 3 soaking; 42.39% at day 4 soaking and 50.38% at day 5 respectively.
Authors and Affiliations
Enwuso A. Igwe, Kemejika I. Amadi-Oparaeli
Keywords
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