Indirect estimates of flexural strain in concrete sidewalks induced by vertical movement

Indirect estimates of flexural strain in concrete sidewalks induced by vertical movement

This paper examines different numerical methods to estimate flexural strain from surface elevation measurements on concrete sidewalks. Surface elevations, along a typical concrete sidewalk cross section, were monitored on a monthly basis as part of a study to determine the cracking mechanism of concrete sidewalks. These measurements were carried out in Calgary, Edmonton, and Camrose, Alberta, b...

Performance of concrete sidewalks: field studies

This article examines the different failure modes of concrete sidewalks through an extensive field survey of sidewalk inventories in major cities in the Canadian Prairies. The major form of sidewalk damage is longitudinal cracks. There was no correlation of either the liquid limit or the plastic limit of the soil beneath the sidewalk with the type of sidewalk damage observed in each city. Howev...

Field Measurement of Vertical Strain in Asphalt Concrete

Recently developed Mechanistic-Empirical Pavement Design Guide (MEPDG) determines the probable total rutting by summing up the deformations of all layers of the trial pavement. If all distresses outcomes including rutting are within the specification the trial section is designed for construction. Therefore, vertical deformation (or strain) needs to be measured to validate the MEPDG for local c...

Experimental Study on Flexural Behavior of Precast Concrete Shear Walls with Vertical Joint

Flexural Stresses in an "i" Beam by Strain Gages

The Tinius Olson Universal Testing machine (see Figure 1.1) is capable of loading a test specimen to a maximum load of 60,000 lb. The load applying section of this machine consists of three thick metal plates. The top and the bottom plates are rigidly connected together with thick tie rods. This assembly is connected on the bottom to a hydraulic cylinder which is contained within the base of th...