Influence Of Nanomaterials On Properties Of Bituminous Concrete Mixes

Abstract

Bituminous concrete mix is commonly used as a surface course in India. Use of chemical additives in the conventional mix helps to improve the pavement performance. This research paper attempts to compare the use of Nanomaterials in form of Zycotherm and Nano clay as an admixture in bituminous concrete mix against the orthodox design mix. Initially optimum bitumen content was determined by plotting graphs for stability value, flow value, air voids and bulk unit weight with respect to bitumen content percentage by weight. Different samples with quantity of Zycotherm corresponding to 0.1 % 0.2% and 0.3% by the weight of bitumen (Optimum Bitumen Content 5.5%) were made. The laboratory study concludes that the stability value was improved upon the addition of the additive and optimum Zycotherm content was also determined. Nano clay was also added similarly to the conventional mix and was tested for Marshall Stability and Stripping test. The addition of only Nano clay to the bitumen mix indicates a reduced Marshall Stability value while the Stripping resistance was increased considerably.