Concrete Durability is such a problem that need exact attention, if not, it cause so much excessive cost to country economic. Hence, knowing concrete durability harmful factors is essential. One of the common harmful factors is Chloride diffusion and reinforcement corrosion. The Persian Gulf area in south of Iran in order of special geographical conditions such as temperature, moisture content, wind and the soluble chloride in the sea, atmosphere and soil is one of the areas most prone to concrete Chloride diffusion and reinforcement corrosion. Hence, since 2002, CMI has started studies about life span of concrete structures exposed to the action of chlorides in corrosive environment of Persian Gulf. For this reason, CMI in cooperation with President Deputy Strategic Planning and Control organization has established the first academic investigation site in Bandar-e-Abbas city. In follow-up investigation, CMI in cooperation with Qeshm Free Zone organization has established the second investigation site of reinforced and Non reinforced concrete in Qeshm Free Zone in 2007.
In order to investigate of long term behavior of reinforced concrete members exposed in chloride environments, various concrete specimens with different mixture design had built and placed in five deferent zone containing Atmospheric zone, Splash zone, Tidal zone.
Furthermore, the effect of different kind of Pozzolans containing Microsilica, Zeolite, Fly Ash, and Metakaolin with different content use in concrete investigated.
Over time, several kinds of tests are done on specimens which some of them are as follows:
- Nordest NT Build 443,
- Chloride content obtained by photometric method in accordance with ASTM C114,
- Measurement of Reinforcement Corrosion Rate using Transient Galvanostatic Pulse method,
- Determination of reinforcement corrosion potential (Half-Cell Method),
- Determination of Electrical Resistivity of Concrete,
In order to create a model for estimating of Life cycle of reinforced concrete in corrosive Persian Gulf environment, the CMI computer programmer team has designed software program for reinforced concrete structures life cycle and concrete durability in the Persian Gulf environment estimating, named DuraPGulf. In addition, in the latest software edition, the probability prediction and carbonation effect will be added.