Measuring Foundation Course Modulus Using Falling Weight Deflectometer, Light Weight Deflectometer, and Dynamic Cone Penetration

Barrett, Bruce; Troxel, Kellie; Dresselhaus, Brady; Hansen, David

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Measuring Foundation Course Modulus Using Falling Weight Deflectometer, Light Weight Deflectometer, and Dynamic Cone Penetration

2021-12-01
By Barrett, Bruce ; Troxel, Kellie ; Dresselhaus, Brady

File Language:

English

Details

Creators:

Barrett, Bruce ; Troxel, Kellie ; Dresselhaus, Brady ; Hansen, David
Corporate Creators:

Nebraska. Department of Roads. Materials & Research Division
Subject/TRT Terms:
Resource Type:

Tech Report
Geographical Coverage:

Nebraska ; United States
Corporate Publisher:

Nebraska. Department of Roads. Materials & Research Division
Abstract:

There have been attempts in the past to forensically evaluate subgrade and foundation course strength that underly concrete pavement by Falling Weight Deflectometer (FWD) testing on top of doweled concrete. The accuracy of these data is unknown. The Falling Weight Deflectometer is a trailer mounted, non-destructive testing device that drops a weight onto the pavement and has sensors that measure the amount of resulting deflection. The slope of the load and resulting deflection is referred to as the modulus. NDOT has years of experience testing strata beneath asphalt surfaces but because FWD testing of subgrades beneath rigid pavement are not well established, NDOT has not adopted testing of rigid pavements and underlying bases by FWD.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/60906/dot_60906_DS1.pdf
File Type:

[PDF - 643.67 KB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:9dbdd95550fc0b5e1e14d5afb0cbb23b933b779fab7d5d1808ef52daef0fdf54

File Language:

English

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