Sustainable Structures and Materials, An International Journal http://ssmij.org/index.php/ssm en-US Sustainable Structures and Materials, An International Journal 2616-4779 Experimental Study of Pile-Soil Interaction of Integral Abutment Bridges with Low-Cyclic Lateral Load http://ssmij.org/index.php/ssm/article/view/84 <p><em>This paper experimentally investigates the mechanism and deformation of circular and rectangular reinforced concrete (RC) piles of integral abutment bridges (IAB). Pseudo-static tests of the RC piles under low-cyclic loading were conducted to simulate the periodic displacement of the IAB due to temperature changes. A lateral displacement load was applied on the pile head and the characteristics of energy dissipation, strain, bending moment, lateral displacement, and pile damage were analyzed. The results show that the ratio of reinforcement and the shape of the section significantly influence the energy dissipation and RC pile ductility. The ratio of reinforcement (1.6% to 3.2%) is suitable for the RC pile, providing excellent energy dissipation and ductility. The lateral resistance of the RC pile accounts for over 50% of the whole soil-pile system in the elastic stage. However, the resistance distribution of the surrounding soil of the pile is more than 50% in the latter stages. </em><em>Furthermore</em><em>, the performance of the circular RC pile was better than the rectangular one. </em><em>It is </em><em>recommended to use the circular pile in bridge design when the RC pile is used as the foundation of IABs, especially in areas with high seismic fortification levels.</em></p> Yizhou Zhuang, Dr. Zelun Chen Said Easa, Dr. Yingang Guo Fuyun Huang, Dr. Zengfeng Li ##submission.copyrightStatement## 2022-03-04 2022-03-04 4 2 1 18 Temperature Control and Monitoring For Mass Concrete in Raft under Hot Weather Condition – An Indian Case Study http://ssmij.org/index.php/ssm/article/view/82 <p>The temperature difference between inner and outer zones of mass concrete possess a great risk and may induce stresses leading to cracking in the concrete. In order to avoid the problems associated with temperature induced stresses in mass concrete, temperature control and monitoring is essential. This paper presents a case study of raft constructed for a 19 storey residential tower at Delhi in India. &nbsp;In this study, various temperature control methods were adopted at site during material selection, concrete mixing, transporting, casting and curing. Based on recorded data it was found that adopted measures helped in control the peak temperature of the concrete as well as the temperature differences in different sections of the concrete. In total, ten thermal sensors were used in the study. Out of which three sensors were embedded at the top, three at the middle and three at the bottom of the foundation. Apart from these, one thermal sensor was kept in ambient temperature conditions for comparison purpose. In the present study, the temperature differences between top, middle and bottom of the concrete is primarily focused. Maximum temperature observed in concrete was 65.50 °C and maximum temperature difference between top and core of concrete was 14.40 °C, both are within specified limits of 70 °C and 20 °C respectively as per the Indian standard codal provisions.</p> P N Ojha Amit Sagar Brijesh Singh Harish Sharma Pranay Singh ##submission.copyrightStatement## 2022-03-14 2022-03-14 4 2 19 28