Strain [Composite/Overlay]

 

LF Sensor

 

Description

A "LF" sensor measures hot-mix asphalt strain response due to dynamic loads applied to a whitetopping overlay. The "LF" sensor consists of a foil strain gage bonded to the bottom of an asphalt core that was removed and reinstalled prior to a bonded concrete overlay (whitetopping).

 

Manufacturer

LF sensors: BLH foil strain gage manufactured by Vishay Measurements Group.

 

Location

LF sensors are located at the bottom of the hot-mix asphalt layer under a whitetopping.

 

Current Status

These sensors no longer function.

 

MnROAD Database Tables

Data has been collected during various load response testing sessions, and some has been processed and loaded into the MnROAD database. Data is

located in database tables named: MNR.DYNAMIC_LOAD_TEST_VALUES and MNR.DYNAMIC_LOAD TEST DESCRIPTIONS.