This study investigated the bond behavior of reinforced concrete members subjected to corrosion and rehabilitated by partial depth repair using self-compacting concrete. Twelve beam-end specimens (600 × 500 × 250 mm) were tested, and two bonded lengths were considered (250 mm and 350 mm) to study the bond behavior of cleaned corroded rebar repaired by partial depth repair concrete. Two levels of corrosion were studied (5% and 10%) and were compared with control specimens (non-corroded specimens). A commercial prepacked self-compacting concrete (SCC) was used as the partial depth repair concrete and was compared to monolithic normal concrete (MNC) specimens. The bond stress-slip behavior was assessed using three linear variable differential transformers (LVDTs). Two LVDTs were placed at the loaded end of the rebar, and a third was placed at the free end, to measure the free-end slip. Generally, for the same bonded length, the average bond strength of the repaired clean rebar increased as the corrosion level increased. As the bonded length increased from 250 mm to 350 mm, the average bond strength decreased, and the corresponding bar slip increased. The beam-end specimens with the 250 mm bonded length failed by splitting of the concrete. However, the failure mode of the beam-end specimens with the 350 mm bonded length was a combination of pull-out and splitting failure or bar yield and splitting failure.

本研究研究了使用自密实混凝土对钢筋混凝土构件进行腐蚀并通过部分深度修复进行修复后的粘结性能。测试了十二个梁端试样（600×500×250 mm），并考虑了两个粘结长度（250 mm和350 mm），以研究用局部深度修复混凝土修复的清洁腐蚀钢筋的粘结性能。研究了两种腐蚀水平（5％和10％），并与对照样品（未腐蚀的样品）进行了比较。将商品预包装的自密实混凝土（SCC）用作部分深度修补混凝土，并将其与整体式普通混凝土（MNC）试样进行比较。使用三个线性可变差分变压器（LVDT）评估了粘结应力-滑移行为。在螺纹钢的加载端放置了两个LVDT，然后将三分之一放在自由端，以测量自由端滑移。通常，对于相同的粘结长度，修复后的干净钢筋的平均粘结强度会随着腐蚀程度的增加而增加。随着粘结长度从250 mm增加到350 mm，平均粘结强度降低，相应的滑移率也增加。粘结长度为250 mm的梁端试样由于混凝土分裂而失效。但是，结合长度为350 mm的梁端试样的破坏模式是拉出和分裂破坏或钢筋屈服和分裂破坏的组合。平均粘结强度降低，相应的滑移率增加。粘结长度为250 mm的梁端试样由于混凝土分裂而失效。但是，结合长度为350 mm的梁端试样的破坏模式是拉出和分裂破坏或钢筋屈服和分裂破坏的组合。平均粘结强度降低，相应的滑移率增加。粘结长度为250 mm的梁端试样由于混凝土分裂而失效。但是，结合长度为350 mm的梁端试样的破坏模式是拉出和分裂破坏或钢筋屈服和分裂破坏的组合。