Evaluation of emulsified asphalt for use in Saudi Arabia
Saudi Arabia currently contains 31,000 km (18,600 mi) of paved roads and 42,000 km (25,200 mi) of agricultural roads, with the prospect of more roads to be constructed. The low population (6 million) compared to the large area of the country (2,253,300 kmS, 900,000 miS) coupled with the high cost of crushed aggregate makes maintenance and road building costs very high. Local emulsified-asphalt economics, plants, and uses were investigated in this study. Emulsified asphalt proved to be attractive when used for local road maintenance and road bases and low-volume road construction, especially when used with dune sand and marl. Emulsified asphalts were evaluated for use with dune sand and marl and at two portland cement contents. Three types of emulsified asphalts were used which included locally produced, laboratory prepared, and Chevron USA emulsions. Emulsion treated mixes were tested for tensile strength, Poisson's ratio, resilient modulus, fatigue life, and rutting characteristics. Both diametral and beam fatigue tests were used and tests were conducted at 10, 25, 40, and 55C (50, 77, 104, and 131F). The open-graded mix was tested for fatigue characteristics using beam flexure with a confining membrane.
- Research Organization:
- Oregon State Univ., Corvallis (USA)
- OSTI ID:
- 6268722
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
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