A research programme to investigate the durability of Ciment Fondu mortars mixed with sea and fresh water plus various admixtures has been described previously, and results have been presented on fresh and early age hardened properties. This paper presents results on durability tests in a marine environment for up to 10 years. Mortars, made at 5, 20 and 40°C, were mixed using seawater, artificial seawater and de-ionised water. The admixtures used were an accelerator, superplasticiser, anti-washout, air-entraining and water proofing admixtures and an ethylene vinyl acetate polymer dispersion. Performance of each combination was monitored for a total of 10 years at a marine exposure site and is compared to the laboratory performance in freeze-thaw and wet-dry cycling over one year. The mortars with polymer latex performed poorly and many specimens had completely disintegrated, whereas the controls and mortars with accelerator and superplasticiser performed well on the marine site. Temperature of mixing and curing is very important in both the early and long term performance of Ciment Fondu, and it is recommended to carry out durability tests on any proposed combination before a decision is taken regarding materials selection.
|Title of host publication||Calcium aluminates|
|Subtitle of host publication||Proceedings of the 2014 International Conference|
|Editors||Charles Fentiman, Raman Mangabhai, Karen Scrivener|
|Publisher||IHS BRE Press|
|Number of pages||11|
|Publication status||Published - 20 May 2014|
- CIMENT FONDU