Mostaqbal City Bridge project been designed as Pre-tensioned Girders onsite precast concrete, where Esolution have supplied stressing equipment required for the project as per the specification, tested and calibrated along with the Open Barrel and wedges, Pretensioning grips are anchor grips designed for multi-use. They are chiefly used in the production of factory-made or onsite precast members where the concrete is cast around previously tensioned tendons. Such anchor grips are made to high quality standards to ensure that a high number of reuses is obtained.
Wedges been fabricated with A high degree of dimensional accuracy, automated production, careful heat treatment and strict quality control ensure our products being of the highest quality. By subjecting the wedges to 100% hardness testing and 100% tooth-form testing by means of computer cameras, followed by automatic assembly and the performance of tensile tests, PAUL expends far more effort on testing than is officially required.
the wedges are subjected several times to loads equalling 65% and 80% of the breaking load of the wire or strand with which they are to be used and then once right through to breakage. Of the pretensioning wedges, ones with the lowest and ones with the highest hardness are stressed 10 times with 80% of the breaking load and then once right through to breakage,The wedge-shaped segments are hardened to 60 – 65 HRC. In the hardening shop they are subjected to stringent tests, the results of which are recorded for each delivery. Additional tests are carried out . In a manual test on 1% of the wedges the surface hardness, core hardness and case of depth are checked. In addition, every single post-tensioning wedge and most of the pretensioning wedges undergo an automatic surface hardness test.
The anchor barrels must be absolutely free of cracks as can be well understood if one thinks of the stresses they are required to bear and of what could happen if they were to fail. Although barrels are turned from bars that are guaranteed by the supplier to be free of cracks, all are tested again before delivery on an ultrasonic tester. Only such barrels as have passed this test twice in succession are stamped as having been tested and released for delivery.
Esolution will run all installation, stressing of the cables up to consultant approval, the project feautures pre-tension work in Cairo-Egypt and the process are to be maintained with highest quality for the materials used in pre-stressing/pre-tensioned work
Esolution supply pre-stressing services in many countries in the gulf, North Africa and other countries to highest possible quality in the filed