Research On High Performance Concrete In Section Of TJ-3of Harbin-Dalian Passenger Line

Winter is very cold and long in Section TJ-3of Harbin-Dalian passenger dedicated line. Surface water or groundwater of this section eroded to the concrete structure. The concrete must resist cold, erosion, racking in construction. This study of high performance concrete combined with actual situation of Harbin-Dalian passenger dedicated line.This paper researches the source of materials along the bid section, according to the requirements of concrete quality in current railway standard, the specific technical indicators are tested for local main materials, raw materials which satisfy the requirements of high performance concrete are selected.Combined with the techniques of the incorporation of active admixture, superplasticizer and air entraining agent, in this paper, we tested with high performance concrete which meets workability of construction, strength, durability, volume stability and other requirements of the section, and optimized the mix proportion which considers the economy.By testing the workability, mechanical properties, durability of high performance concrete, we get the high performance concrete which meet the construction requirements of the TJ-3section.When applying the preparatedhigh performance concrete which are suitable for the construction environment of TJ-3section, its effect is good. It can guarantee the construction quality of blocks of concrete beam and slab.