Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Concrete creep mechanism explained
Concrete is ubiquitous as a building material, but it suffers from “creep,” long-term deformations caused by its own weight, that damage its integrity and make it susceptible to cracking and crumbling. Now, scientists have evidence this creeping phenomenon stems from nanoscale dissolving of concrete’s primary phase, calcium silicate hydrate (CSH) grains, under high stress (J. Chem. Phys. 2016, DOI: 10.1063/1.4955429). The discovery, by a team led by Gaurav Sant, Mathieu Bauchy, and Isabella Pignatelli at UCLA, could allow further study to devise concrete compositions that are more resistant to creep. Concrete—various mixtures of sand or gravel with a binder and water—has been used as a building material for thousands of years, and today, next to water, it’s the most widely used material in the world. Scientists have proposed models for concrete creep mechanisms, but none have been able to explain all of the physical manifestations of creep. In the new
Discovery could assist development of deformation-resistant structures
10.1021/cen-09432-scicon-concretecxd-gr6
Concrete creep leads to crumbling, as seen in this bridge in Ottawa, Ontario. (Credit: Shutterstock)
Concrete creep mechanism explained
Concrete is ubiquitous as a building material, but it suffers from “creep,” long-term deformations caused by its own weight, that damage its integrity and make it susceptible to cracking and crumbling. Now, scientists have evidence this creeping phenomenon stems from nanoscale dissolving of concrete’s primary phase, calcium silicate hydrate (CSH) grains, under high stress (J. Chem. Phys. 2016, DOI: 10.1063/1.4955429). The discovery, by a team led by Gaurav Sant, Mathieu Bauchy, and Isabella Pignatelli at UCLA, could allow further study to devise concrete compositions that are more resistant to creep. Concrete—various mixtures of sand or gravel with a binder and water—has been used as a building material for thousands of years, and today, next to water, it’s the most widely used material in the world. Scientists have proposed models for concrete creep mechanisms, but none have been able to explain all of the physical manifestations of creep. In the new
Discovery could assist development of deformation-resistant structures
10.1021/cen-09432-scicon-concretecxd-gr6
Concrete creep leads to crumbling, as seen in this bridge in Ottawa, Ontario. (Credit: Shutterstock)
Concrete creep mechanism explained
Chemical & Engineering News ; 94 ; 9
08.08.2016
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Mechanism of creep in concrete
| Engineering Index Backfile | 1968
Prestressed Concrete simply explained
| TIBKAT | 1964
Reinforced concrete simply explained
| Elsevier | 1977
Probable mechanism of creep in concrete
| Engineering Index Backfile | 1964
The mechanism of creep in concrete
| Springer Verlag | 1968