表面能对砂浆断裂能、强度及收缩性能的影响

Influences of Surface Energy on Fracture Energy,Strength and Shrinkage Properties of Mortar

以水泥砂浆为研究对象,对不同水分含量及不同表面张力溶液下砂浆的断裂能、强度及收缩膨胀性能进行了研究。试验结果表明:砂浆的断裂能、强度随着水分含量的增加和浸泡液体表面张力的增大而减小,在全干燥状态下砂浆的表面能最大,相应的断裂能和强度也最大。海水浸泡后砂浆断裂能及强度显著降低。随着浸泡液体表面张力的增大,砂浆的膨胀应变线性增大。

Fracture energy,strength,shrinkage and expansion properties of cement mortar are studied under different moisture content and surface tension solutions.Results indicate that the fracture energy and strength of mortar are lower according to moisture content and surface tension of immersion liquids increasing.Under total drying condition,the surface energy of mortar is highest,and the fracture energy and strength are maximal too.After seawater immersion,the fracture energy and strength of mortar decreased significantly.The swelling strain of mortar increases linearly with the increase of surface tension of immersion liquids.