If repeated measurements on the same specimen show tight clustering far from the known true value, the device exhibits

When selecting a dial gauge or extensometer for measuring axial deformation in a concrete cylinder compression test, the most critical specification is

Density of a material is formally defined as

Match each term in Column A with its correct description/application from Column B. Each item in Column B is used exactly once.

A measuring device can have high sensitivity but still produce inaccurate results.

Indirect measuring devices such as LVDTs and strain gauges require

When 20% of the Portland cement is replaced with fly ash, the 28-day compressive strength

When aggregates are in the moist condition with free moisture greater than zero, the actual mixing water added at the batch plant must be reduced to maintain the target water-cement ratio.

According to the absolute volume method of PCC contents determination, the unit weight of water is used to convert the required water mass into volume by dividing the weight in lb/yd³ (or kg/m³) by:

For base course applications, particle surface texture is considered very important, while pore structure and porosity are generally unimportant or of unknown importance.