Calcium hydroxide influence in autogenous self-healing of cement-based materials in various environmental conditions
作者： Deividi Maurente Gomes da Silva , Vanessa Giaretton Cappellesso , Maurício Germano Lopes Garcia , Angela Borges Masuero , Denise Carpena Coitinho Dal Molin
DOI: 10.1590/S1678-86212021000200522
关键词:
摘要: Several factors, such as chemical shrinkage or environmental attack can produce concrete cracks. Calcium hydroxide content from the environment cement hydration promote self-healing phenomenon (SHP). This study evaluates calcium concentration influence on of cement-based materials. Cracked mortars with different types cement, a filler, pozzolanic, and high initial strength, were exposed to four conditions. Titration was method proposed determine amount leached in water, cracks closure analyzed by optical microscopy. CPII F (Portland Cement, type II, compound limestone) samples showed no trend Ca(OH) 2 leached, superficial cracking closure. Regarding CPV V, strength cement) samples, their behavior highest all exposure, submerged condition. Thus, significant cracks´ regarding presence Ca 2+ exposure environments, water source related this seems be primary factor improve SHP.
scilit.net参考文章(56)
Pierangiola Bracco, Anuj Bellare, Alessandro Bistolfi, Saverio Affatato, Ultra-High Molecular Weight Polyethylene: Influence of the Chemical, Physical and Mechanical Properties on the Wear Behavior. A Review Materials. ,vol. 10, pp. 1- 22 ,(2017) , 10.3390/MA10070791
Liberato Ferrara, Visar Krelani, Fabio Moretti, Marta Roig Flores, Pedro Serna Ros, Effects of autogenous healing on the recovery of mechanical performance of High Performance Fibre Reinforced Cementitious Composites (HPFRCCs): Part 1 Cement & Concrete Composites. ,vol. 83, pp. 76- 100 ,(2017) , 10.1016/J.CEMCONCOMP.2017.07.010
Vanessa Giaretton Cappellesso, Uso de impermeabilizante por cristalização para redução da permeabilidade do concreto ,(2016)
Ruben P. Borg, Estefania Cuenca, Enrico Maria Gastaldo Brac, Liberato Ferrara, Crack sealing capacity in chloride-rich environments of mortars containing different cement substitutes and crystalline admixtures Journal of Sustainable Cement-Based Materials. ,vol. 7, pp. 141- 159 ,(2018) , 10.1080/21650373.2017.1411297
Liberato Ferrara, Tim Van Mullem, Maria Cruz Alonso, Paola Antonaci, Ruben Paul Borg, Estefania Cuenca, Anthony Jefferson, Pui-Lam Ng, Alva Peled, Marta Roig-Flores, Mercedes Sanchez, Christof Schroefl, Pedro Serna, Didier Snoeck, Jean Marc Tulliani, Nele De Belie, None, Experimental characterization of the self-healing capacity of cement based materials and its effects on the material performance: A state of the art report by COST Action SARCOS WG2 Construction and Building Materials. ,vol. 167, pp. 115- 142 ,(2018) , 10.1016/J.CONBUILDMAT.2018.01.143
Maria Araújo, Sutima Chatrabhuti, Stijn Gurdebeke, Natalia Alderete, Kim Van Tittelboom, Jean-Marie Raquez, Veerle Cnudde, Sandra Van Vlierberghe, Nele De Belie, Elke Gruyaert, None, Poly(methyl methacrylate) capsules as an alternative to the 'proof-of-concept' glass capsules used in self-healing concrete Cement & Concrete Composites. ,vol. 89, pp. 260- 271 ,(2018) , 10.1016/J.CEMCONCOMP.2018.02.015
Mengmeng Li, Chaolin Fang, Satoru Kawasaki, Minsheng Huang, Varenyam Achal, Bio-consolidation of cracks in masonry cement mortars by Acinetobacter sp. SC4 isolated from a karst cave International Biodeterioration & Biodegradation. ,vol. 141, pp. 94- 100 ,(2019) , 10.1016/J.IBIOD.2018.03.008
Bjorn Van Belleghem, E Gruyaert, Kim Van Tittelboom, Wim Moerman, B Dekeyser, Jeroen Van Stappen, Veerle Cnudde, Nele De Belie, Effect of Polyurethane Viscosity on Self-Healing Efficiency of Cementitious Materials Exposed to High Temperatures from Sun Radiation Journal of Materials in Civil Engineering. ,vol. 30, pp. 04018145- ,(2018) , 10.1061/(ASCE)MT.1943-5533.0002360
A.R. Suleiman, M.L. Nehdi, Effect of environmental exposure on autogenous self-healing of cracked cement-based materials Cement and Concrete Research. ,vol. 111, pp. 197- 208 ,(2018) , 10.1016/J.CEMCONRES.2018.05.009
Estefanía Cuenca, Antonio Tejedor, Liberato Ferrara, A methodology to assess crack-sealing effectiveness of crystalline admixtures under repeated cracking-healing cycles Construction and Building Materials. ,vol. 179, pp. 619- 632 ,(2018) , 10.1016/J.CONBUILDMAT.2018.05.261