Measuring Thickness Of Concret

Part I of Essay
e e Elements Using Drilled Concrete Cores When doing construction one of the major concerns is that the work being done complies with the design specifications. In this ASTM test, C 174M-97, the thickness of a concrete pavement, slab, or structural element is determined ....

Part II of Essay
.... The apparatus needs to allow for the measuring of specimens of different nominal lengths over a range of at least 100 to 250 mm. It needs to be made in order to make a measurement at the center of the upper end of the specimen and at eight additional points spaced at equal intervals along the circumference of a circle. The device that makes contact with the end surface of the specimen needs to be rounded to a radius of 3 mm. Finally the instrument for measuring needs to be stable and sufficiently rigid to maintain its shap ....