混凝土粘结强度，拉离和锚拉出测试仪

粘结强度和锚固试验

粘结强度和拉脱试验
Bond strength and pull-off testing refer to a test method outlined in ASTM C1583 and D4541. This type of testing is used to evaluate and provide a qualitative value of coatings applied to a concrete or other substrate surface. The test result provides a quantifiable value that conveys the amount of force needed to separate the coating from the substrate. Pull-off and bond strength testing provides a popular method of testing both the adequacy of a coating’s adhesion, 以及它的故障点. In order to test the pull-off strength of a coating on concrete, the technician would use one of the variety of pull-off testers supplied by 洪堡, 如 DY-2拉脱测试仪 或者我们的 hc - 2988a键合测试套件，25kN压力表.

The bonding strengths of a wide and varied range of materials including concrete, 的文章, 修复迫击炮, 环氧树脂涂料, 层压制品, 塑料, paints and enamels may be accurately determined using this Bond Tester. Adequate direct tensile strength or bonding strength between two layers is important if repairs to concrete structures or additional overlays and screeding on existing concrete is to be structurally sound. The pull-off test as a means of projecting the compressive strength of concrete and other materials involves bonding a circular steel disk to the surface by means of an epoxy resin adhesive. 然后对圆盘施加可控的拉力, and as the strength of the bond becomes greater than that of the material under stress it will eventually fail in tension. From the area of the disk and the force applied at failure it is possible to calculate a nominal tensile strength for the material.

一般情况下, 将圆盘(多莉)粘接在准备好的测试表面上, this is allowed to cure and a partial core is cut around the disk into the substrate. The pull-off tester is then attached to the disk and a pulling pressure is applied to the disk. By initiating the pressure source, pressure is slowly increased to the actuator within the system. When the pressure in the actuator becomes greater than the bond strength between the coating and the substrate, separation will occur and the actuator-dolly assembly will lift the coating from the substrate. The maximum pressure indicator of the system’s pressure gauge provides a direct reading of the pressure at which the pull-off occurred. This measured pull-off force provides a direct indication of the strength of adhesion between the coating and the substrate. This test can also be run as a quality-control test where a desired, predetermined force is applied to the disk in order to see if the coating can withstand the applied force, which provides an accurate pass/fail evaluation according to industry standards.

起锚测试
洪堡 supplies a range of portable testers for testing the crucial holding force of anchors and fixings in construction materials. These anchor testers can be used to measure the performance of the anchor installation, and verify that it will resist specific pull-out forces in the lab or onsite. 起锚测试 can be used as a quality control measure in the lab or onsite. 在实验室评估锚定系统时, 锚固应采用相同的方式和方法安装, and in the same material it is envisioned or projected to be used in a construction project.

Onsite anchor pull-out testing is usually required for two distinct purposes: to determine the suitability of an anchor fixing and to determine the allowable resistance of the anchor to pull-out failure, or to validate the quality of the installation of anchors in a particular application.

进行起锚试验, 锚固测试仪配有一个兼容的螺柱适配器, 哪个连接到锚定装置. The anchor tester then applies a load with the use of a mechanical screw arrangement acting through a hydraulic load cell, 哪一个测量直接施加在锚上的载荷.

洪堡 provides an extensive selection of Anchor Pull-Out testers with pulling capabilities from 5kN to 145kN. An array of different bridge sizes and heights are also available. 我们的标准职责锚测试仪 hc - 2957 du锚测试套件，带25kN压力表 available with a 25kN analog gauge as standard, but can be upgraded to a digital gauge. 一个中型测试套件 HC-2960中型锚测试套件，带50kN压力表 is available with many accessories to tailor it to almost any application.

我们还提供重型锚测试仪， hc -2959重型测试套件- 50kN. 该锚测试仪可以处理高达145千牛的应用.

模拟和数字替代仪表, 以及广泛提供的测试适配器, 延伸腿和连接盘可以在这里找到, 也.