The anchors injected in mortar joints are shown to have much greater pull-out capacity than that found for anchors in bricks. Passing from 90 to 160mm of embedment depth, a minimum increase by 40% of pull-out strength is observed. The most common failure modes are the sliding failure, ...
Shear strength of epoxy anchors embedded into low strength concrete Constr. Build. Mater., 38 (2013), pp. 723-730 View PDFView articleView in ScopusGoogle Scholar Çolak, 2001 A. Çolak Parametric study of factors affecting the pull-out strength of steel rods bonded into precast concrete ...
The near-surface-mounted (NSM) technique has been raised as an alternative, where FRP strips or rods are inserted into shallow grooves inside the masonry and bonded to the substrate by a stiff epoxy. The advantages of this method over the EB method include significantly higher strengths, ...
1.The relation between bond and slip of CFRP tendons and concrete structure were investigated and the bond destruction mechanism was analized by pull-out test.通过拔出试验,研究了碳纤维筋与混凝土结构的粘结与滑移关系,分析了粘结破坏的机理。 2.In this paper,the bond strength between high-strength li...
Therefore, the local characteristics of the rock, such as roughness and induced fractures, are signi?cant factors in the anchor strength. To obtain realistic strength values, the test holes should be drilled using the same methods as the construction rock bolt holes. 5.4 Rocks with signi?cant ...
The survey focused on three alternative fixing materials such as screw inserts, drive-in nuts and undercut anchors. The pull-out resistance and failure pattern of the specimens with an alternative fastener are compared to those with wood screws. Furthermore, it was tested whether different ...
The results showed that while they all performed better than cement-based mortar-bonded specimens, the use of the epoxy-based chemical adhesive and vinyl-ester-based chemical adhesive pull-out load values were closely related. The anchorage depth and rebar diameter both improve the bond strength ...
This is because a wider strip has a larger surface area in contact with the adhesive and confinement to the bar, which results in a higher bond strength and, thus, a higher load-bearing capacity. Table 6. Comparison between FE and experimental findings of the pullout specimens. SpecimenID...
Fig. 44reflects the effect of epoxy resin content on the pullout strength of the epoxy emulsified asphalt with two kinds ofcuring agents. The pullout strength of epoxy emulsified asphalt rises with the increased epoxy resin content. In terms of the curing agents,curing agentA is more effective...
According to ACI committee 440 recommendations [1], the tensile strength of the concrete and bond integrity of FRP systems should be tested via pull-off bond tests to assess the bond strength and failure modes. Thus, the concept of pullout bond strength of FRP anchors (solely) and pull-off...