Title:
Performance of a Different Pozzolanic Cement Concretes Under Cyclic Wetting and Drying
Author(s):
A.A. Ramezanianpour, Radfar, Hadikhanloo, Moslehi and Maghsoodi
Publication:
Symposium Paper
Volume:
178
Issue:
Appears on pages(s):
759-778
Keywords:
durability; pozzolans; slag; silica fume; trass; wetting and drying tests.
DOI:
10.14359/6007
Date:
6/1/1998
Abstract:
As part of a comprehensive research project on the durability of on and offshore concrete structures in the Persian Gulf, a simulation laboratory has been made use of. The present study consists mainly of nine month exposure tests in the tidal and atmospheric zone conditions in the laboratory. Concrete specimens containing different supplementary materials, namely; silica fume, blast - furnace slag, diatomous earth and trass, have been thoroughly investigated. The tests conducted include, compressive strength, volume changes, half cell potentials, carbonation, and chloride diffusion, all at different ages. With respect to the alternate cycles of wetting and drying the superior preformance of silica fume was followed by the diatomous earth pozzolan. However all concrete mixtures containing natural and artificial pozzolans showed better performance when compared with the plain portland cement control concrete mixtures.