Journal
BALTIC JOURNAL OF ROAD AND BRIDGE ENGINEERING
Volume 3, Issue 1, Pages 29-37Publisher
RIGA TECHNICAL UNIV-RTU
DOI: 10.3846/1822-427X.2008.3.29-37
Keywords
hot mix asphalt (HMA); road pavement construction (RPC); asphalt mix (batch type) plant (AMP); quality assurance; componential composition; production quality; homogeneity
Categories
Ask authors/readers for more resources
It was determined that poor quality of asphalt concrete is the main cause (65%) of early fatigue cracking of asphalt concrete pavement of roads in Lithuania and neighbouring countries with similar climatic conditions. The poor quality of asphalt concrete is mainly predetermined by production errors of hot mix asphalt (HMA) and designed suboptimal mass ratio Of Constituents. The development of theoretical principles for producing the best componential composition of asphalt concrete is highlighted. Optimal values of the portions of coarse aggregate, fine aggregate, filler and bitumen recommended by different authors are given. The main causes of deviations from the optimal composition of HMA produced by asphalt asphalt mix plants of different generations are systematised. The dynamics of rapid cracking of asphalt concrete paving of Lithuanian roads is shown emphasising the inadequacy of HMA structure and properties to increased traffic intensity and axial workloads. The permissible values of asphalt concrete components, optimal under the actual climate and traffic conditions, ensuring highest asphalt concrete resistance to fatigue and rational (8-9 years) service life, during which the cracked pavement area does not exceed 8%, are proposed. A quality assurance method has been developed based oil mathematical statistical methods. It helps avoid deviations of component proportions, occurring ill the process of production, from the project proportion and to increase the homogeneity of the product.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available