this in-vitro study sought to assess the push-out bond strength of a total etch and 2 self-etch bonding systems to intracanal dentin of primary anterior teeth (pat).thirty-six primary anterior teeth were randomly divided into 3 groups of 5(th) generation (single bond 2), 6(th) generation (clearfil se) and 7(th) generation (single bond universal) bonding agents. the canal orifice was restored wi...

self-desiccation is the major source of autogenous shrinkage and crack formation in low water-binder ratio (w/b) concretes which can be reduced by internal curing. in this paper performance of high strength self consolidating concrete (hs-scc) with w/b of 0.28 and 0.33 including autogenous shrinkage, drying shrinkage, compressive strength, and resistance to freezing-thawing was investigated. th...

High-strength concrete (HSC) has been broadly applied to various civil structures for its advantages including high compressive strength and excellent durability creep resistance. However, the brittleness of HSC raises concern about use in practice. So far study on continuous reinforced beams is limited. This work investigates structural response beams, results are compared with those counterpa...

Nowadays, concrete with strength higher than 50 MPa is utilized due to the ever increasing need for higher strength and prolonged healing properties. Despite the widespread use of high-strength concrete, only a few research projects have been conducted on the punching shear strength of high-strength concrete slabs. Reinforced concrete flat slabs are widely employed in structural systems. The lo...

While some post-weld treatment techniques increase the fatigue life mainly due to induced compressive residual stress others are trying create a smooth transition at weld toes. One of latter is profiling. This study investigates effect profiling for four different steel types from S355 S900 including one duplex stainless-steel and performs comparison with high frequency mechanical impact (HFMI)...