Lightweight Deflectometer for Quality Assurance of Compacted Sublayers and Earthwork

Simon, Doug P; LaBelle, Jacqueline

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Lightweight Deflectometer for Quality Assurance of Compacted Sublayers and Earthwork

2023-09-01
By Simon, Doug P ; LaBelle, Jacqueline

File Language:

English

Details

Creators:

Simon, Doug P ; LaBelle, Jacqueline
Corporate Creators:

HDL Engineering Consultants, LLC
Corporate Contributors:

Alaska. Department of Transportation and Public Facilities. Research and Technology Transfer ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

HFHWY00274/000S(964) ; 22-112
Resource Type:

Tech Report
Geographical Coverage:

Alaska ; United States
Corporate Publisher:

Alaska. Department of Transportation and Public Facilities. Research and Technology Transfer
Abstract:

This report documents and presents the results of a study for implementation of lightweight deflectometer (LWD) testing for construction Quality Assurance (QA) in Alaska. The research evaluated empirical values, control strip testing, and laboratory testing to determine LWD target values. The results indicate control strip testing is the preferred method for determining LWD-TVs in Alaska at this time. Test results indicate either elastic modulus or deflection can accurately provide acceptance criteria for unbound materials, but Alaska Department of Transportation and Public Facilities prefers deflection because it is directly measured by all LWD devices and more intuitive to communicate with contractors, inspectors, and technicians. This research develops standard test methods, modifications to Alaska Standard Specifications, and training materials to facilitate implementation of LWD testing for QA.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/73324/dot_73324_DS1.pdf
File Type:

[PDF - 8.25 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:fea31b449a99a953791a041f70bed69bc2d6bbf3b42c830efa922a17f901bd29

File Language:

English

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