Experimental study of the material and bond properties of frost-damaged concrete
Artikel i vetenskaplig tidskrift, 2011

In an extensive experimental investigation, several types of tests were conducted on a reference specimen and frost-damaged concrete. Two levels of internal frost damage were quantified by the relative dynamic modulus of elasticity and compressive strength. Test results showed a significant influence of freeze-thaw cycles on the compressive strength and even more influence on the modulus of elasticity and the compressive strain at peak stress. Reduced tensile strength and increased fracture energy were measured. From inverse analysis of wedge splitting test results, a significant effect of frost on the shape of the tensile stress-crack opening relationship was observed: tensile strength was reduced, while the post-peak behaviour was more ductile for the frost-damaged concrete. Pull-out tests showed the influence of freeze-thaw cycles on bond strength and slip. The pull-out test results are compared with similar tests available in the literature and the effect of frost on bond behaviour is discussed.

Fracture energy

Compressive strength

Bond strength

Freezing and thawing

Tensile properties

Författare

Kamyab Zandi

Chalmers, Bygg- och miljöteknik, Konstruktionsteknik

Peter Utgenannt

Swedish Cement and Concrete Research Institute

Karin Lundgren

Chalmers, Bygg- och miljöteknik, Konstruktionsteknik

Cement and Concrete Research

0008-8846 (ISSN)

Vol. 41 244-254

Drivkrafter

Hållbar utveckling

Ämneskategorier

Materialteknik

Samhällsbyggnadsteknik

Husbyggnad

Styrkeområden

Materialvetenskap

DOI

10.1016/j.cemconres.2010.11.007