Concrete Peel off and Breakage

The design life for building is identified by the project's actual requirement.There is a highway with a designed life of 100 years,but it appears serious concrete peel off problems in the pier bodies and lid beams of grand bridge,medium bridge and exchange overpass before the highway′s construction work completed.Through actual survey and field sampling and analysis of the project,it indicates the causes of concrete deterioration are the content of coarse aggregate stone power,and it has not taken a better conservation measures after the incorporation of silica fume and concrete,coupled with severe effects of chlorine in salt spray zone.These causes accelerated the concrete deterioration phenomenon.Therefore,it must be paid attention by design and construction units.