Considerable effort is being directed toward investigating the surface characteristics of concrete. A number of tests have been developed to index the surface properties of concrete, most notable the initial surface absorption test; Figg hypodermic methods; and the covercrete absorption test. Although the results of the tests presented in this technical note are limited to a particular mix, it is shown that absorption characetristics are also influenced by casting procedures. Considering that the samples were batched under laboratory conditions, the difference between the top and the bottom surfaces are not insignificant. The work has highlighted the need for clear specifications when undertaking sorptivity tests; for example, which suction surface is being tested and the time interval over which a test is conducted.
|Number of pages||7|
|Journal||Journal of Materials in Civil Engineering|
|Publication status||Published - Feb 1993|