@article { author = {Benali, Farouk and Hamidouche, Mohamed and Kolli, Mostafa and Bouaouadja, Noureddine and Fantozzi, Gilbert}, title = {Effect of a Carboxylic Acid on Rheological Properties of a High Alumina Cement Mortar}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {32}, number = {4}, pages = {49-57}, year = {2013}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2013.6744}, abstract = {In this work, we studied the effect of carboxylic acid on the rheological properties of a high-alumina cement mortar (CH45) produced by the Algerian firm REFRACTAL.The investigated properties are setting time, water consumption, electrical conductivity, pH, density and the compressive strength. The results show a setting time of about 200 min for the acid free, 180 min with 0.1 % of carboxylic acid and 18 hours with 2 % of this acid. A significant reduction in water consumption was noticed. The water/cement ratio of the acid free-mortar is reduced from 0.24 to 0.16 with 2% acid. The rheological investigations carried out on the mortar-water mixtures with and without carboxylic acid show a Newtonian behavior. The setting of hydrated mortar-water with acid mixtures shows an increase in the apparent density leading to an improvement of the compressive strength.}, keywords = {C: CaO,S: SiO2,H: H2O,A: Al2O3,CAC: Calcium Aluminate Cement}, url = {https://ijcce.ac.ir/article_6744.html}, eprint = {https://ijcce.ac.ir/article_6744_7d63e9964df2201451d0ddd7c78f904a.pdf} }