Matches in SemOpenAlex for { <https://semopenalex.org/work/W91100986> ?p ?o ?g. }
Showing items 1 to 86 of
86
with 100 items per page.
- W91100986 abstract "The reaction CO2 +Ca(OH)2 → H2O+CaCO3 takes place in unsaturated porous concrete-based materials with separated reactants, where CO2 and H2O are diffusing and Ca(OH)2 can be assumed as immobile. The process (called carbonation) plays an important role in the service life of concrete-based structures. Our aims are threefold: (1) We study via a matched-asymptotics approach the occurrence of two distinct length scales in the carbonation process. These scales are arising due to the strong competition between reaction and diffusion effects. We show that for sufficiently large times τ the width of the carbonated region is proportional to √ τ , while the width of the reaction front is proportional to τ p−1 2(p+1) for carbonation-reaction rates with a power law structure like k[CO2][Ca(OH)] q 2, where k > 0 and p, q > 1. (2) We emphasize the occurrence of a water barrier in the reaction zone which may hinder the penetration of CO2 by locally filling with water air parts of the pores. This non-linear effect may be one of the causes why a purely linear extrapolation of accelerated carbonation test results to natural carbonation settings is (even theoretically) not reasonable. (3) We compare the asymptotic penetration law, which we obtain for the position of the reaction front, against measured penetration depths from [5]. The novelty consists in the fact that the factor multiplying √ t is now identified asymptotically by solving a non-linear system of ordinary differential equations, and hence, no fitting arguments are necessary to estimate its size. Our law is an alternative to the asymptotic √ t expression of the carbonationfront position obtained by Papadakis, Vayenas and Fardis in [26]." @default.
- W91100986 created "2016-06-24" @default.
- W91100986 creator A5038962869 @default.
- W91100986 creator A5047645763 @default.
- W91100986 date "2006-01-01" @default.
- W91100986 modified "2023-09-26" @default.
- W91100986 title "Length scales in the concrete carbonation process and water barrier effect : a matched asymptotics approach" @default.
- W91100986 cites W1508334628 @default.
- W91100986 cites W1565688698 @default.
- W91100986 cites W1568666422 @default.
- W91100986 cites W1581071628 @default.
- W91100986 cites W1587859748 @default.
- W91100986 cites W1963839933 @default.
- W91100986 cites W1966067270 @default.
- W91100986 cites W1984025326 @default.
- W91100986 cites W1987139950 @default.
- W91100986 cites W1992605817 @default.
- W91100986 cites W2030238725 @default.
- W91100986 cites W2039351181 @default.
- W91100986 cites W2039755011 @default.
- W91100986 cites W2051651025 @default.
- W91100986 cites W2076773479 @default.
- W91100986 cites W2081614681 @default.
- W91100986 cites W2103473265 @default.
- W91100986 cites W2115951027 @default.
- W91100986 cites W2245426114 @default.
- W91100986 cites W2301920453 @default.
- W91100986 cites W2802340452 @default.
- W91100986 cites W648771074 @default.
- W91100986 cites W655347443 @default.
- W91100986 cites W72906727 @default.
- W91100986 hasPublicationYear "2006" @default.
- W91100986 type Work @default.
- W91100986 sameAs 91100986 @default.
- W91100986 citedByCount "1" @default.
- W91100986 crossrefType "journal-article" @default.
- W91100986 hasAuthorship W91100986A5038962869 @default.
- W91100986 hasAuthorship W91100986A5047645763 @default.
- W91100986 hasConcept C120809312 @default.
- W91100986 hasConcept C121332964 @default.
- W91100986 hasConcept C132459708 @default.
- W91100986 hasConcept C134306372 @default.
- W91100986 hasConcept C159985019 @default.
- W91100986 hasConcept C185592680 @default.
- W91100986 hasConcept C192562407 @default.
- W91100986 hasConcept C199289684 @default.
- W91100986 hasConcept C33923547 @default.
- W91100986 hasConcept C97355855 @default.
- W91100986 hasConceptScore W91100986C120809312 @default.
- W91100986 hasConceptScore W91100986C121332964 @default.
- W91100986 hasConceptScore W91100986C132459708 @default.
- W91100986 hasConceptScore W91100986C134306372 @default.
- W91100986 hasConceptScore W91100986C159985019 @default.
- W91100986 hasConceptScore W91100986C185592680 @default.
- W91100986 hasConceptScore W91100986C192562407 @default.
- W91100986 hasConceptScore W91100986C199289684 @default.
- W91100986 hasConceptScore W91100986C33923547 @default.
- W91100986 hasConceptScore W91100986C97355855 @default.
- W91100986 hasLocation W911009861 @default.
- W91100986 hasOpenAccess W91100986 @default.
- W91100986 hasPrimaryLocation W911009861 @default.
- W91100986 hasRelatedWork W1966968612 @default.
- W91100986 hasRelatedWork W1972233499 @default.
- W91100986 hasRelatedWork W1987242903 @default.
- W91100986 hasRelatedWork W1987457931 @default.
- W91100986 hasRelatedWork W2005719616 @default.
- W91100986 hasRelatedWork W2019325208 @default.
- W91100986 hasRelatedWork W2019524995 @default.
- W91100986 hasRelatedWork W2020064374 @default.
- W91100986 hasRelatedWork W2029492003 @default.
- W91100986 hasRelatedWork W2048761066 @default.
- W91100986 hasRelatedWork W2050445601 @default.
- W91100986 hasRelatedWork W2071293544 @default.
- W91100986 hasRelatedWork W2076331048 @default.
- W91100986 hasRelatedWork W2094594757 @default.
- W91100986 hasRelatedWork W2119485456 @default.
- W91100986 hasRelatedWork W2132075906 @default.
- W91100986 hasRelatedWork W2138616687 @default.
- W91100986 hasRelatedWork W2553971876 @default.
- W91100986 hasRelatedWork W2588036444 @default.
- W91100986 hasRelatedWork W57592033 @default.
- W91100986 hasVolume "0607" @default.
- W91100986 isParatext "false" @default.
- W91100986 isRetracted "false" @default.
- W91100986 magId "91100986" @default.
- W91100986 workType "article" @default.