Push pull testing is normally carried out in order to gauge how strong the fixings are between a typical fixing and concrete.
Calibrated push pull force gauges are used to measure mechanical load testing strengths of the fixings.
No matter what type of bonding material used, the actual testing principles remain the same.
Push pull testing and tensile strength testing is usually performed because many factors which effect proper bonding of the fixings. The biggest concern is that weaknesses may not be noticed when only visual inspection is conducted. Some of these factors are: degraded strength of the bonding material caused by low temperature, frost, or when contaminants infiltrates into the joining compound. Another reason for insufficient bonding strength is as a result of smooth side walls.
The entire integrity of the whole structure may be weaker so as to loose the integral strength of the structure due to the vital bonding materials being weak. Ultimately, this may cause the construction failures leading to disastrous consequences. Push pull testing gives you early diagnosis of such problems. Because of this, constructors can rectify the problems. Early fault finding mitigates future problems. This also gives an assurance of any fixings overall strength.
Push pull testing is conducted either on large scale or a smaller intensive batch. Testing always entails maximum design load stress testing planned in construction as required by the standards of the industry. This is not destructive testing so the actual loads applied together with the sample size are determined by the on-site engineers.
Push Pull Testing is a sampling as a quality assurance measure. Should problems be found then the Pull Out Testing could be used to rapidly detect the extent of any identified problem.
Quicker Pull out testing (larger sample testing) can be used in instances when the costs of the mass testing is far reaching and faults have been found.
Pull Out Tests can quickly test more fixings and will only show the pass or fail of maximum loads being tested. The test methods are identical as Push Pull Tests but only the pass or failure is recorded. Push Pull Testing is normally used to detect problems the rapid Pull Out Tests can quickly find out the extent of any identified problems.
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