Flexural Behavior Compared with Marshall Stability of Asphalt Paving Mixtures

Noori Sadiq Ali

College of Engineering, Salahaddin University

DOI: https://doi.org/10.17656/jzs.10145

Abstract

The flexural failure strength of asphalt mixtures was investigated as a first local trial study

to compare and construct relationships with corresponding Marshall stability ' The type and

grading of aggregate were taken. into consideration '

The results include Marshall stability - flexural load relationship ; flexural load variation with

asphalt contents; Marshall stability quotients (Marshall stability / flow )-comparison with

flexural load quotients ( flexuraf llad / deflection ) with variation of asphait contents and

constructing thlir relationships ; and variation of flexural strength (modulus of rupture ) with

asphalt contents .

The results showed that there is second degree polynomial relationship between Marshall

stability and flexural load on one hand anibetween Marshall stability and flexural load

quotients on the other hand . Significant differences resulted between Marshall stability and

flexural loads and between their load quotients for each asphalt content . The type and grading

of aggregate affect flexural stiffness with asphalt contents '

Keywords :- Stiffness of asphalt. Flexural strength of asphalt

References

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4.Ali ,N.S. 2003 "Skid Resistance Evaluation of Asphalt Paving Mixtures " , ZANCO, Journal of Pure and Applied Science Salahaddin Universityl Arbil, 2004. 16, 3.

5. El-Rawi , N.M. " Skid Resistance of Sulphate Mixtures " , Journal of Building Research , Building itesearch Centre , Council for Scientific Research. Baghdad . 1983'2 o No.1, Mry,.

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