Development of a new low cost indirect tensile test equipment for bituminous mixtures

In order to design pavements analytically, mechanical properties such as elastic modulus and Poisson's ratio should be known. In addition, fatigue and plastic deformation life of bituminous mixtures have to be known. In Turkey, Marshall mix design is still in use which has been superseded in many developed countries. The reason behind using the Marshall mix design is the lack of knowledge of other mix design methods by highway authorities and the cost of alteration. In order to minimise the alteration cost a new low cost indirect tensile test equipment is developed which costs almost 1/10th of market price. The equipment is fully computer controlled. The load is controlled by a load cell, the pressure is applied via electronic pneumatic system. Deformation is measured by two LVDT's. Using different granular material gradings and temperatures fatigue lines were obtained for the use of analytical pavement design. As can be seen from test results, the fatigue relationship has not got a linear fit. Fatigue test results are also interpreted in different ways using fuzzy set theory which indicated that fatigue life points can be predicted better than the linear fit.

• Authors:
  • Tigdemir, M
  • Karasahn, M
• Conference:
  • Eurasphalt and Eurobitume Congress, 2nd, 2000, Barcelona, Spain
• Publication Date: 2000

Language

• English

Media Info

• Pagination: 640-7 (Book 2)
• Monograph Title: Proceedings of the papers submitted for review: Eurasphalt and Eurobitume Congress

Subject/Index Terms

• TRT Terms: Bitumen; Elasticity (Mechanics); Fatigue (Mechanics); Fuzzy logic; Mix design; Modulus of deformation; Pavement design; Pavements; Properties of materials; Tensile strength; Test procedures; Tests for suitability, service and quality
• ATRI Terms: Bitumen; Elasticity; Fuzzy logic; Material fatigue; Material properties; Mix design; Modulus; Pavement design; Pavement testing; Tensile strength; Test method
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 01442707
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, ATRI
• Created Date: Aug 25 2012 12:42AM