Laboratory Evaluation of Asphalt Rubber and Polymer Modified Bituminous Mixtures Constructed in the Stockholm Area

Project: Research project

Project Details

Description

Laboratory Evaluation of Asphalt Rubber and Polymer Modified Bituminous Mixtures Constructed in the Stockholm Area Laboratory Evaluation of Asphalt Rubber and Polymer Modified Bituminous Mixtures Constructed in the Stockholm Area The objective of this study is to conduct an advanced laboratory experimental program to obtain typical engineering material properties for an asphalt rubber, polymer modified and reference bituminous mixtures placed recently in the Stockholm Area. The laboratory testing program will utilize current laboratory tests adopted by the pavement community. The results will be compared / ranked among each other and with some test results in the ASUs database to evaluate the anticipated performance of these mixes. Scope of Work In conjunction with the , the three mixtures and associated binders will be sampled from the construction project. The mixtures will be sent to the ASU laboratories. Preparation will include compaction of 150mm diameter gyratory specimens for triaxial and indirect tensile strength testing. In addition, beam specimens will be prepared and compacted according to AASHTO TP8 test protocols. The target air void level for the test specimens will be simulate those typically achieved in the field. Rice gravities for the mixtures will be determined, and 100mm diameter samples will be cored from each gyratory plug prepared. The sample ends will be sawed to arrive at typical test specimens of 100mm in diameter and 150mm in height. Thickness and bulk densities will be measured and the samples will be stored in plastic bags in preparation for the testing program outlined below. Data obtained from these mixtures will be summarized in spreadsheets. The spreadsheet will contain information such as binder information, aggregates, volumetric mix properties, and the results of the advanced dynamic material characterization tests. These tests include; triaxial shear strength, dynamic (complex) modulus, repeated load for permanent deformation characterization; indirect tensile creep test for thermal cracking characterization; flexural beam tests for fatigue cracking, and C*-Line Integral for crack propagation evaluation. In addition, all three mixtures will be evaluated 1 for tire/pavement noise through some of the recent work that ASU has been doing on viscoelastic properties and ultrasonic pulse time testing. The data will be also used to establish a relative ranking of the mixtures according to their expected rutting or cracking potenti
StatusFinished
Effective start/end date12/1/0812/31/09

Funding

  • OTHER: Foreign Government: $46,876.00

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