Lightweight Deflectometer for Quality Assurance of Compacted Sublayers and Earthwork

Simon, Doug P; LaBelle, Jacqueline; HDL Engineering Consultants, LLC

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Lightweight Deflectometer for Quality Assurance of Compacted Sublayers and Earthwork

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

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English

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Details:

Creators:

Simon, Doug P ; LaBelle, Jacqueline

Simon, Doug P ; LaBelle, Jacqueline Less -
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

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

[+]

Aggregates Compaction Deflectometers Density Granular Bases Lightweight Concrete Modulus Of Resilience Quality Assurance Subbase Materials Unbound Aggregates
Publication/ Report Number:

HFHWY00274/000S(964) ; 22-112

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

Tech Report
Geographical Coverage:

Alaska ; United States

Alaska ; United States Less -
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
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:fea31b449a99a953791a041f70bed69bc2d6bbf3b42c830efa922a17f901bd29
Download URL:

https://rosap.ntl.bts.gov/view/dot/73324/dot_73324_DS1.pdf
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Lightweight Deflectometer for Quality Assurance of Compacted Sublayers and Earthwork

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