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Low-porosity tricalcium aluminate hardened paste
Highlights ► Low-porosity and high strength tricalcium aluminate paste could be obtained. ► It was result of the effects of the cooperation of the used two technological factors. ► Extreme low w/c ratio (0.08) conditioning the significant compressive strength increase. ► High pressure compaction (300MPa) of the fresh mixture as a unique mode of its processing.
Abstract The results of the study on the properties of the hardened tricalcium aluminate paste, prepared under the use of water/solid (w/s) ratio 0.08 and compaction pressure 300MPa are presented. To the comparison to the reference paste (water/cement ratio 0.40, no pressure compaction) the pressed pastes shown more dense pore structure showing significant increase compressive strength. The increase represented ca 6000% under the hardening at 20°C and ca 5000% at 90°C. The effect of compressive strength decrease was probably a consequence of more intensive hydration of C3A at the higher curing temperature. The results also shown the C3A as a cement component having a positive response to the conditions of the combination of very low water:solid ratio and pressure compaction.
Low-porosity tricalcium aluminate hardened paste
Highlights ► Low-porosity and high strength tricalcium aluminate paste could be obtained. ► It was result of the effects of the cooperation of the used two technological factors. ► Extreme low w/c ratio (0.08) conditioning the significant compressive strength increase. ► High pressure compaction (300MPa) of the fresh mixture as a unique mode of its processing.
Abstract The results of the study on the properties of the hardened tricalcium aluminate paste, prepared under the use of water/solid (w/s) ratio 0.08 and compaction pressure 300MPa are presented. To the comparison to the reference paste (water/cement ratio 0.40, no pressure compaction) the pressed pastes shown more dense pore structure showing significant increase compressive strength. The increase represented ca 6000% under the hardening at 20°C and ca 5000% at 90°C. The effect of compressive strength decrease was probably a consequence of more intensive hydration of C3A at the higher curing temperature. The results also shown the C3A as a cement component having a positive response to the conditions of the combination of very low water:solid ratio and pressure compaction.
Low-porosity tricalcium aluminate hardened paste
Zivica, V. (author) / Palou, M.T. (author) / Bagel, L. (author) / Krizma, M. (author)
Construction and Building Materials ; 38 ; 1191-1198
2012-09-23
8 pages
Article (Journal)
Electronic Resource
English
Low-porosity tricalcium aluminate hardened paste
| British Library Online Contents | 2013
Low-porosity tricalcium aluminate hardened paste
| Elsevier | 2013
Low-porosity tricalcium aluminate hardened paste
| Online Contents | 2013
| Engineering Index Backfile | 1952