自密实混凝土与老混凝土粘结面的抗剪试验研究

Research on the shear behavior of the adhesion of self-compacting concrete and old concrete

以自密实混凝土为新混凝土,选取Z形试件作为新老混凝土粘结面抗剪性能试件和整体伴随试件.在万能压力机上进行直剪试验,对自密实混凝土与老混凝土粘结面的抗剪性能进行研究.对照前人有关普通混凝土的试验结果,比较自密实混凝土和普通混凝土与老混凝土的粘结面的抗剪性能.研究表明,具有优良工作性能的自密实混凝土与老混凝土的粘结面的抗剪承载力优于普通混凝土.

With the self- compacting concrete taken as the new concrete, Z - shape has been selected as the configuration of adhesive specimens of young on old concrete with the monolithic new concrete specimens as their companion specimens. Their behavior of shear has been tested by multifunctional testing system. Referring to others＇ outcome for comparing the shearing property of self- compacting concrete with normal concrete on the old, the study in the shear behavior of the adhesion of self- compacting and old concrete has been carried out. The results show that the shearing strength of self- compacting concrete with superior workability on the old is better then the normal concrete.