Performance Analysis of Concrete for Bridge in Cold Area
In order to study the performence of concrete for bridges in cold area,the effects of the amount of antifreeze,curing period and different temperature on the mechanical properties of concrete are analyzed by designing single variable test under different curing temperature,at the same time,the anti-permeability and anti-freezing properties of concrete under low temperature are analyzed,un-der the same curing condition,the compressive strength and dynamic modulus of later concrete will decrease because of the addition of antifreeze Under different curing conditions,adding the same antifreeze agent,the corresponding electric flux is different,the addition of antifreeze agent increases the electric flux of concrete,the anti-chloride ion permeability of low temperature curing concrete with anti-freeze agent is poor at the later stage,and the relative dynamic modulus of concrete decreases with the increase of freezing and thawing times,and the mass loss rate of concrete increases,the results show that the frost resistance of concrete with antifreeze agent is better than that without antifreeze.
low temperature curingbridge concretecompressive strengthanti-permeabilityfrost resistance
NETL
NSTL
万方数据
维普
