The XH-60/300 restraint pull-off bond strength Tester developed and produced by Tiandi Xinghuo is suitable for bonding ribbed steel bars and substrate concrete with anchoring adhesives, and determines the bond strength of the device under the condition of restraint pull-out.
The instrument is composed of a hand pump, a hydraulic cylinder, a pressure sensor, a data acquisition instrument and a high-pressure hose. The pump body is made of precision cast steel for a long service life. The hydraulic cylinder is a hollow fail-safe type, and the XH series hollow cylinder has a handle and can be connected to the high-pressure hose through a quick coupling. The data logger reads intuitively and reads the tensile force (kn) value directly. The instrument is compact, easy to carry, small in size and light in weight. The hand pump can also be used as a power source for general-purpose low-flow high-pressure oil.
The working principle of the constrained pull-off bond strength Tester is as follows: when the jack and the center hole of the pressure sensor are sleeved around the measured rod, a suitable fixture is selected to clamp the part of the measured rod that exposes the center hole; Under the action of the hydraulic pressure of the pressure pump, the oil pressure is transmitted to the jack cylinder through the oil pipe, and the piston rod moves outward against the sensor and the special chuck; The pressure acts directly on the shell of the anchor, and then transmits to the clamp, which clamps the measured rod after being stressed, and finally promotes the rod to be pulled outward. At this time, the pressure gauge on the pressure pump shows the corresponding force (kN) value, which reflects the tensioning force of the measured rod.
