Date of Award

2016-01-01

Degree Name

Master of Science

Department

Civil Engineering

Advisor(s)

Soheil Nazarian

Second Advisor

Mehran Mazari

Abstract

The nuclear density gauge (NDG) is the current tool for field compaction quality control (QC) and quality assurance (QA) for soil and base layers in the state of Texas. The Texas Department of Transportation (TxDOT) uses this nondestructive testing (NDT) device to determine the compacted density and moisture content of earthwork and unbound aggregates. However, to provide the missing link between design and quality management parameters, an alternative stiffness-based approach would be more desirable. Intelligent Compaction (IC) is defined as continuous assessment of mechanistic soil properties (stiffness, modulus) through roller parameters (frequency, amplitude and speed) integrated with global positioning system (GPS) to provide a complete compaction and geographic information. TxDOT has currently defined proof mapping with an IC roller as an approximate way of assessing the uniformity of the compacted geomaterial. IC rollers can identify less stiff areas and significantly improve uniformity of compaction. A rigorous analysis of IC data was carried out to evaluate the compaction quality management of unbound pavement layers in the state of Texas.

Language

en

Provenance

Received from ProQuest

File Size

84 pages

File Format

application/pdf

Rights Holder

Jorge Alberto Beltran

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