A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A new system for crack closure of cementitious materials using shrinkable polymers
AbstractThis paper presents details of an original crack-closure system for cementitious materials using shrinkable polymer tendons. The system involves the incorporation of unbonded pre-oriented polymer tendons in cementitious beams. Crack closure is achieved by thermally activating the shrinkage mechanism of the restrained polymer tendons after the cement-based material has undergone initial curing.The feasibility of the system is demonstrated in a series of small scale experiments on pre-cracked prismatic mortar specimens. The results from these tests show that, upon activation, the polymer tendon completely closes the preformed macro-cracks and imparts a significant stress across the crack faces.The potential of the system to enhance the natural autogenous crack healing process and generally improve the durability of concrete structures is addressed.
A new system for crack closure of cementitious materials using shrinkable polymers
AbstractThis paper presents details of an original crack-closure system for cementitious materials using shrinkable polymer tendons. The system involves the incorporation of unbonded pre-oriented polymer tendons in cementitious beams. Crack closure is achieved by thermally activating the shrinkage mechanism of the restrained polymer tendons after the cement-based material has undergone initial curing.The feasibility of the system is demonstrated in a series of small scale experiments on pre-cracked prismatic mortar specimens. The results from these tests show that, upon activation, the polymer tendon completely closes the preformed macro-cracks and imparts a significant stress across the crack faces.The potential of the system to enhance the natural autogenous crack healing process and generally improve the durability of concrete structures is addressed.
A new system for crack closure of cementitious materials using shrinkable polymers
Jefferson, Anthony (author) / Joseph, Christopher (author) / Lark, Robert (author) / Isaacs, Ben (author) / Dunn, Simon (author) / Weager, Brendon (author)
Cement and Concrete Research ; 40 ; 795-801
2010-01-06
7 pages
Article (Journal)
Electronic Resource
English
A new system for crack closure of cementitious materials using shrinkable polymers
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