https://mail.lifescienceglobal.com/pms/index.php/jrups/issue/feed 2026-01-19T10:23:33+00:00 Support Manager support@lifescienceglobal.com Open Journal Systems <p>This journal aims to bring together participants from academia and industry in highlighting the advances in polymer research along with its application to global development. The journal seeks to promote and disseminate knowledge of the various topics and technologies of Polymer research in various sectors like industry, agriculture, health, water, shelter and environmental management. The journal will disseminate the research results among development policymakers, scholars and practitioners with a hope to identify new research directions. It can also have practical implications within interdisciplinary developing fields such as functional / specialty polymers, biomaterials, drug delivery, electronic applications, composites, conducting polymers, liquid crystalline materials; and bring contribution in new fabrication techniques.</p> https://mail.lifescienceglobal.com/pms/index.php/jrups/article/view/10796 2026-01-19T10:23:33+00:00 Alyaa Abdulrazzaq Azeez alyaaabdulrazzaq@yahoo.com

<p class="04-abstract">Near-surface-mounted strengthening with polymer-based carbon fiber-reinforced polymer (CFRP) bars has been proved as one of the efficient techniques in enhancing the shear capacity of reinforced concrete RC deep beams. This paper presents an experimental investigation on the shear behavior of RC deep beams strengthened with NSM CFRP bars. Five identical RC deep beam specimens with the same geometry and internal steel reinforcement were tested under two-point loading. One specimen was left un-strengthened as a control beam; while four specimens have been strengthened by CFRP bars embedded in the shear zone with two orientations, 0°/90° and 45°/135°, and two spacing configurations, 100 and 150 mm. Response parameters of prime interest included first shear cracking load, ultimate shear capacity, crack pattern, and mid-span deflection. The findings of the experiment demonstrated that NSM CFRP strengthening improved the shear performance of deep beams; depending on the orientation and spacing of the CFRP bars, shear capacity augmentation ranged from about 14% to 47% in comparison to the control specimen. Additionally, at similar load levels, strengthened beams demonstrated a 10% to 40% decrease in mid-span deflections and fracture widths. The test results demonstrate how well polymer-based CFRP bars inserted using the NSM technology improve the stiffness and shear strength of RC deep beams.</p>

2026-01-19T00:00:00+00:00 Copyright (c) 2026 https://mail.lifescienceglobal.com/pms/index.php/jrups/article/view/10797 2026-01-19T10:20:39+00:00 Kamal Ali Mohammed kamal.alfadhly@atu.edu.iq Thaer Matlab Mezher info@lifescienceglobal.com

<p>The structural behavior and thermally induced stresses of steel members play an important role in the safety, serviceability and long-term performance of civil engineering structures exposed to high temperatures and high humidity. Variations in stiffness, thermal deformation and stress redistribution directly affect the bearing capacity, deflection limit and durability of structural components, especially when polymer-based coatings and hybrid polymer-metal systems are used for environmental protection. In this study, a numerical investigation is performed to measure the thermomechanical response of commonly used structural steels (AISI 304, 316, 1020 and 1045) subjected to coupled thermal and humid conditions. Key structural parameters including elastic stiffness degradation, thermal deflection and thermal stress development are evaluated to support rational material selection and performance-based structural design. The results show that increasing temperature gives a significant increase in deflection for all steel grades due to a reduction in Young's modulus, while the thermally induced stress decreases as a result of hardness softening. Carbon steels (1020 and 1045) exhibit low thermal deflection and high structural stiffness, while stainless steels (304 and 316) exhibit superior resistance to moisture-induced corrosion and environmental degradation, which is essential for durability-oriented structural applications. These findings highlight the inherent trade-off between structural stiffness, thermal compatibility and environmental resistance when choosing a steel substrate.</p>

2026-01-19T00:00:00+00:00 Copyright (c) 2026