关键词: 预制混凝土;后浇混凝土;粘结劈拉强度;粘结面粗糙度;温度

Abstract: Based on the experimental study of adhesive splitting tensile test of post pouring concrete on precast concrete , the effects of specific factors on the adhesive splitting tensile performance were investigated . These factors are as follows: pouring method of post pouring concrete , interfacial roughness , temperature .Results show that under the same working condition , the horizontal pouring concrete adhesive splitting tensile strength significantly is greater than the vertical to the casting adhesive splitting tensile strength , adhesive splitting tensile strength increases significantly with the increase of interfacial roughness , adhesive splitting tensile strength falls sharply with the increase of temperature , to 300 ℃, it is 50%lower than adhesive splitting tensile strength of the normal temperature .The obtained experimental results can provide the evidence for clarifying adhesive splitting tensile mechanism as well as the reference for the development of precast concrete structures .

Key words: precast concrete;post pouring concrete;adhesive splitting tensile strength;interfacial roughness;temperature