Mechanistic Evaluation of Hedmanite and Lime Modified Asphalt Concrete Mixtures
Publication: Journal of Materials in Civil Engineering
Volume 10, Issue 3
Abstract
This investigation was undertaken to evaluate the effectiveness of using hedmanite (rockwool natural fibers) as filler in improving the performance of asphalt concrete pavements, and to compare hedmanite with lime (as filler) modified mixes and the conventional asphalt mix containing crushed stone filler. In this study, optimum asphalt content was obtained by Marshall method and was used in all the modified mixes. The engineering properties, including resilient modulus, stability loss, split tensile strength, fatigue and permanent deformation, were determined. Results indicated that certain percentages of both hedmanite and lime are effective in improving the resilient modulus, while the Marshall stability loss and tensile strength loss were higher in hedmanite mixes than in lime mixes. Lime modified mixes showed better resistance to fatigue and rutting than hedmanite modified mixes. Results indicated that better quality asphalt concrete mixes can be prepared using lime rather than hedmanite as a filler.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Al-Abdul Wahhab, H. I. (1982). “Effects of baghouse fines and mineral fillers on properties of asphalt mixes.”Transp. Res. Rec. No. 843, 57–64.
2.
Al-Barrak, S. A. (1982). “Improving water resistance of asphalt concrete in Saudi Arabia.” MS thesis, Dept. of Civ. Engrg., King Fahd Univ. of Petroleum and Minerals, Dhahran, Saudi Arabia.
3.
Anani, B. A., and Swailmi, S. H. (1986). “Effects of field control of filler contents and compaction on asphalt mix properties.”Transp. Res. Rec. No. 1217, 29–37.
4.
Baig, G. M. (1995). “Laboratory evaluation of hedmanite and lime modified asphalt concrete mixes,” MS thesis, Dept. of Civ. Engrg., King Fahd Univ. of Petroleum and Minerals, Dhahran, Saudi Arabia.
5.
Boynton, R. S. (1980). Chemistry and technology of lime and limestone, 2nd Ed. John Wiley & Sons, Inc., New York, N.Y.
6.
Craus, J., et al. (1978). “Physico-chemical aspects of the effect and role of filler in bituminous paving mixtures.”Proc., Assn. of Asphalt Paving Technologists, Vol. 47, 558–588.
7.
Fatani, M. N., et al. (1992). “Evaluation of permanent deformation of asphalt concrete pavements in Saudi Arabia.” Final Rep. on Nat. Res. Project on Rutting, Submitted to KACST, Riyadh, Saudi Arabia.
8.
Hedman Resources Ltd. (1983). Information on hedmanite. Ontario, Canada.
9.
Hudson, S. B., et al. (1962). “Effect of fillers on the Marshall stability of bituminous mixtures.”Hwy. Res. Board Bull. 329, Nat. Res. Council, Washington, D.C.
10.
Kallas, B. F., et al. (1962). “Mineral fillers in asphalt paving mixtures.”Hwy. Res. Bull. 329, Nat. Res. Council, Washington, D.C.
11.
Kennedy, T. W., et al. (1984). “Techniques for reducing moisture damage in asphalt mixture.” Res. Rep., Univ. of Texas at Austin, Tex.
12.
Ministry of Communications (MOC). (1986). “Specifications for roads and bridges.” Kingdom of Saudi Arabia, Vol. 2, Circular No. 513.
13.
Richardson, C. (1941). “The modern asphalt pavements.” John Wiley & Sons, Inc., New York, N.Y.
14.
Roque, R., and Buttler, G. W. (1992). “Development of a measurement and analysis system to accurately determine asphalt concrete properties using the indirect tensile mode.”Proc., Assn. of Asphalt Paving Technologists, Vol 61, 304–332.
15.
Terrel, R. L. (1961). “Modified asphalt pavements materials: The European experience.”Proc., Assn. of Asphalt Paving Technologists, Vol. 55, 482–518.
16.
Thomas, L. S. (1962). “Control of asphalt pavement rutting with asbestos fiber.”Hwy. Res. Board Bull. 329, 64–82.
17.
Tunnicliff, D. G. (1967). “Binding effects of mineral filler.”Proc., Assn. of Asphalt Paving Technologists, Vol. 36, 114–156.
Information & Authors
Information
Published In
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Aug 1, 1998
Published in print: Aug 1998
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.