A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Field Validation of the Environmental Conditioning System
This research, conducted as part of the SHRP A-003A contract at Oregon State University (OSU), was designed to validate that the Environmental Conditioning System (ECS) can differentiate among asphalt concrete mixtures that will perform well or poorly in the field with regard to water sensitivity. Twelve test sections were identified, at least two in each of the four SHRP environmental regions: Wet-Freeze, Dry-Freeze, Wet-No Freeze and Dry-No Freeze. From these 12 sections, specimens were prepared using the original mix design (or mix design as identified by extractions), original aggregates, asphalt and admixtures. Specimens were tested using three procedures: (1) ECS, and (2) the OSU wheel tracker, and (3) the Elf asphalt wheel tracker. Cores were taken from the field test sections to evaluate performance of the mixture in the pavement. The performance of the mixtures in each of the test procedures was compared in an attempt to develop a correlation among procedures. Results indicate that the ECS test procedure can distinguish among the relative performance of mixtures, with regard to water sensitivity, as measured in the field and by the OSU and Elf wheel trackers. However, the age of the sections in the field is still relatively young, and water damage is expected to manifest itself in the future in those pavements identified as water sensitive. (Copyright (c) 1994 National Academy of Sciences).
Field Validation of the Environmental Conditioning System
This research, conducted as part of the SHRP A-003A contract at Oregon State University (OSU), was designed to validate that the Environmental Conditioning System (ECS) can differentiate among asphalt concrete mixtures that will perform well or poorly in the field with regard to water sensitivity. Twelve test sections were identified, at least two in each of the four SHRP environmental regions: Wet-Freeze, Dry-Freeze, Wet-No Freeze and Dry-No Freeze. From these 12 sections, specimens were prepared using the original mix design (or mix design as identified by extractions), original aggregates, asphalt and admixtures. Specimens were tested using three procedures: (1) ECS, and (2) the OSU wheel tracker, and (3) the Elf asphalt wheel tracker. Cores were taken from the field test sections to evaluate performance of the mixture in the pavement. The performance of the mixtures in each of the test procedures was compared in an attempt to develop a correlation among procedures. Results indicate that the ECS test procedure can distinguish among the relative performance of mixtures, with regard to water sensitivity, as measured in the field and by the OSU and Elf wheel trackers. However, the age of the sections in the field is still relatively young, and water damage is expected to manifest itself in the future in those pavements identified as water sensitive. (Copyright (c) 1994 National Academy of Sciences).
Field Validation of the Environmental Conditioning System
W. L. Allen (author) / R. L. Terrel (author)
1994
218 pages
Report
No indication
English
Highway Engineering , Construction Equipment, Materials, & Supplies , Materials Degradation & Fouling , Transportation & Traffic Planning , Transportation , Pavement condition , Environmental effects , Asphalt pavements , Highway maintenance , Pavement damage , Asphalts , Field tests , Specifications , Road materials , Permeability , Aggregates , Aging(Materials) , Pavement wear , Environmental conditioning system
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