The purpose of the rig improvements is to perform tests more accurately including studies of
roughness and friction. A new sliding bearing system, Figure 1(a), performs sensitive sliding,
thereby improving the accuracy of the friction measurements during ice abrasion exposure.
Two new vertical load cells under the concrete specimen, Figure 1(c), detect the load more
sensitively. The maximum capacity for each of them is 10 kN (total capacity 20 kN).