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Push pull testing is normally conducted to establish the strength of the material bonding is between a typical fixing 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 usually performed because many factors may effect apt bonding of the fixings. The greatest concern is that some of these factors may pass unnoticed when only visual inspection is conducted. Some of these factors are: degraded strength of the bonding material resulting from low temperature, frost, or when contaminants infiltrates into the joint. Another reason for poor surface bonding strength is as a result of smooth side walls.

The overall strength of a whole set of fixings may be weaker so as to loose the integral strength of the structure because of the vital bonding materials fail. Ultimately, this may cause the construction malfunctions leading to disastrous results. Push pull testing means early diagnosis of such problems. As a result, constructors can repair the problems. Early fault detection reduces future higher costs. It also gives an assurance of any fixings integrity.

Push pull testing is conducted either on a wide test batch or a smaller intensive batch. Testing always entails duplication of the design maximum stress levels anticipated in construction as stipulated by the standards of the industry. This is not destructive testing so the maximum loads applied together with the sample size will be determined 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 quickly find out the severity of any problem.

Quicker Pull out testing (larger sample testing) could be used under the circumstances where the costs of the large scale is far reaching and problems have been detected.

Pull Out Tests are for strength testing only and will only show the pass or fail of maximum loads being tested. The test methods are the same as Push Pull Tests but only the pass or failure is recorded. Push Pull Testing is normally used to detect problems the quicker Pull Out Tests can quickly find out the extent of such problems.

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