Open AccessThe Effect of Cow Dung Ash as A Filler on The Mechanical Characteristics of Hot Mix Asphalt
Author(s) -
Abdulrasool Thamer Abdulrasool,
Yasir N. Kadhim,
Wail Asim Mohammad Hussain,
Ghazi Jalal Kashesh,
Hayder Adnan Abdulhussein
Publication year - 2022
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/961/1/012041
Subject(s) - filler (materials) , asphalt , aggregate (composite) , specific gravity , materials science , asphalt pavement , composite material , asphalt concrete , cow dung , waste management , rut , geotechnical engineering , environmental science , geology , engineering , chemistry , fertilizer , organic chemistry
Highway pavements are being exposed to increasing traffic loads and severe environmental conditions, resulting in reduced service life. A lot of studies have been conducted to modify asphalt by using different materials, especially to replace the ordinary filler. Because the behaviour of the hot asphalt mix is influenced by the fillers. The use of unusual materials as fillers in asphalt mixes can help to improve the mix’s characteristics. As a result, this study uses cow dung ash materials with various replacement ratios as fillers to investigate the mechanical properties of asphalt. In the asphalt mix, a replacement percentage of limestone (0%, 10%, 20%, 30%, 40%, 50%, 60%, 80%, and 100%) was utilized. After that, various tests were performed such as Marshall stability, Marshall flow, voids in mineral aggregate, theoretical maximum specific gravity, air voids. The results revealed a significant improvement in the asphalt mix’s behaviour, as well as an increase in the replacement percentage. According to the findings, the 50% replacement rate has the highest Marshall stability which is equal to 11.11 with a 33.5% rise and the lowest flow of 3 with a 17.83% decrease when compared to the reference mix. As a result, cow dung ash can be used as a filler to modify the mechanical properties of the asphalt mix.