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Push Pull Testing For Building Industry Supplying Calibrated Measuring Instruments. Mechanical Load Testing Procedures For On Site Proof To Testing Standards.
Push pull testing is normally conducted to establish how strong the material bonding is between a typical bolt and concrete.
Push pull testing procedures are performed according to BS5080 Part 1 standards.
Even though materials used for bonding may be different, it is important to note that testing for bonding strength is an universal principle.
Push pull testing and tensile strength testing is normally performed because many factors may impinge upon apt bonding of the fixings. The greatest concern is that weaknesses may pass unnoticed especially when inspection is only carried out visually. Some of these factors are: degraded strength of the bonding material resulting from low temperature, frost, or when water infiltrates into the joint. Another reason for poor surface bonding strength is as a result of smooth side walls.
The entire strength of a whole set of fixings lose in strength so as to loose the integral strength of the structure because of the essential bonding materials fail. Ultimately, this may cause the construction malfunctions leading to disastrous consequences. Push pull testing means early detection of such problems. As a result, constructors are able to repair the problems. Early fault detection mitigates future higher costs. It also helps to add to the assurance of any fixings integrity.
Push pull testing can be carried out either on a wide test batch or a smaller intensive batch. Testing always entails duplication of the design maximum stress levels planned in construction as stipulated by the standards of the industry. This is not destructive testing so the maximum loads applied as well as the sample size will be decided upon by the on-site engineers.
Push Pull Testing is a detailed stress testing study of the performance of bonded materials. Should problems be found then the Pull Out Testing can be used to rapidly find out the severity of any problem.
Quicker Pull out testing (larger sample testing) can be applied under the circumstances where the costs of the large scale is far reaching and faults have been detected.
Pull Out Tests are for strength testing only where the passing of maximum load tolerances are recorded only. The test methods are the same as Push Pull Tests but only the pass or failure is recorded. While the Push Pull Tests can find problems the quicker Pull Out Tests can quickly find out the extent of such problems.
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