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In this paper, the shape of the spinneret capillary was discussed, and optimized spinneret capillaries were successfully processed by a computer numerical control processing method which takes a C-shape silver electrode as the basic unit. Based on the optimised spinning process, a new type of square 8-hole hollow PET fibre was prepared by the experimental method.

As one of the key steps in the process of durability design and redesign, corrosion monitoring of reinforcement in concrete is of importance. To ensure the concrete durability of the quay structure, corrosion monitoring systems are utilized in Port Said East Container Terminal - Phase 2, Egypt. Embedded half-cell potential reference electrodes and anode ladder systems were used together. Early stage corrosion monitoring data in a precast slab is presented. Comparison of half-cell potential and anode ladder system data give some comprehensive understanding of the mechanism of the corrosion monitoring.