RT Journal Article
T1 Development of ultra-high performance concretes with self-healing micro/nano-additions
A1 García Calvo, J. L.
A1 Pérez, G.
A1 Carballosa, P.
A1 Erkizia, E.
A1 Gaitero, J. J.
A1 Guerrero, A.
A1 Gerrero, A.
AB UHPC are developed in present paper incorporating an innovative self-healing system based on two micro/nano-additions: silica microcapsules containing epoxy sealing compound (CAP) and amine functionalised silica nanoparticles. Although CAP are well integrated within the cementitious matrix, their inclusion promotes a reduction in the mechanical performance so CAP could act as weak points. However, the inclusion of these additions refines pore distribution thus increasing the expected durability in aggressive media. An effective autonomous self-healing capacity is assessed/confirmed which is unexpectedly higher in the concretes with the lower healing additions content studied. This capacity depends on the crack width and the healing period considered.
SN 0950-0618
YR 2017
FD 2017-05-01
LA eng
NO García Calvo , J L , Pérez , G , Carballosa , P , Erkizia , E , Gaitero , J J , Guerrero , A & Gerrero , A 2017 , ' Development of ultra-high performance concretes with self-healing micro/nano-additions ' , Construction and Building Materials , vol. 138 , pp. 306-315 . https://doi.org/10.1016/j.conbuildmat.2017.02.015
NO Publisher Copyright: © 2017 Elsevier Ltd
NO Authors gratefully acknowledge the financial support of the BIA2011-29234-C02-01 Project, funded by the Spanish Government (Ministerio de Economía y Competitividad) as well as the funding from the Basque Government through the PI2012-23 Project and Nanoiker Project (Grant No. E11-304) within the Etortek programme and under the umbrella of the Baskrete initiative. The authors would like to thank “CAI de Cartografía Cerebral” department of the “Instituto Pluridisciplinar” of the Complutense University of Madrid for the X-ray Computer Tomography analysis. The authors would also like to acknowledge to J.A. Sánchez and A. Fernández-Escandón for their help in the experimental work.
DS TECNALIA Publications
RD 22 jul 2024