Reinforced concrete (RC) frames are an integral part of modern construction as they resist both gravity and lateral loads in beams columns. However, the methodologies RC vulnerable to non-engineering defects, particularly developing countries. The most common defect occurs due improper lap splice, which can compromise structural integrity. This research demonstrates easy, low-cost, verifiable experimental technique incorporating micro-concrete evaluate seismic performance a completely...

Long-span suspension bridges are typically designed against wind and earthquake loadings without considering blast loads because existing blast-resistant design guidelines for limited in fact not detailed enough to fully explicate the consequences of a event. This study performed dynamic analysis long-span bridge parametrically evaluate its structural redundancy under small large blasts detonated at different locations. To accomplish this, blast-structure interaction problem was solved by...

Automation and robotics are integral parts of many industries but their potential for field implementation has not been significantly recognized by the construction industry. This is mainly attributed to conventional design practices which undermine benefits offered these new technologies such as repetitions, precision, time savings, increased safety. There a need advanced materials 3D-printing systems capable constructing structural elements with performance that emulates conventionally...

This paper presents a simplified approach to assess the safety of main cable and suspenders long-span suspension bridges under blast loads, whereby two-layer solution is adopted solve blast-bridge interaction problem: (1) aspect modelled as nodal load by simulating area pressure contour on deck surface; (2) bridge simulated 3D fishbone skeleton FE model. The detailed implicit dynamic analysis performed small large sized blasts detonated at different locations evaluate redundancy in...

Steel reinforcement corrosion in concrete structures such as bridges, industrial plants, marine structures, and coastal buildings is a growing concern due to its impact on cost, safety, serviceability. Corrosion leads spalling, cracking, reduced diameter, which can compromise structural integrity. This study examines the behavior of columns with corroded two phases. In first phase, 72 150 × mm cross-sectional dimensions 300 length were cast subjected an accelerated technique. The examined...

The significance of long-span bridges being susceptible to wind-induced vibrations and the need for evaluating their aerodynamic performance is focus this study. main emphasis on experimental methods assessing bridges’ stability, using sectional model tests with free vibration technique. dynamic properties are determined from measured response, various system identification methods, including modified Ibrahim time domain (MITD) iterative least squares (ILS) two-degree-of-freedom systems...

Abstract Reinforced concrete (RC) frames are an integral part of modern construction as they resist both gravity and lateral loads in beams columns. However, the methodologies RC vulnerable to non-engineering defects, particularly developing countries. The most common defect entails due improper lap splice, which can compromise structural integrity. This research demonstrates easy, low-cost, verifiable experimental technique incorporating micro-concrete evaluate seismic performance a...

Malaria is a vector-borne disease spread by the bites of female Anopheles mosquitoes. According to WHO, 247 million new cases malaria worldwide were identified in 95 countries and territories only 2021. There are an estimated 600,000 deaths caused each year. Thus, effective preventive measures needed control this threat. The geographic distribution mosquitoes at community level often lacking, yet knowledge vital for prevention efforts. Currently, field data sampling remote rural areas...

Plastic waste is a non-biodegradable material that poses challenges for easy disposal and can lead to environmental hazards. In this study, plastics were added 80/100 bitumen at weight ratio of 0%–1.5%, several tests conducted evaluate the performance modified bitumen, including softening point, ductility, flash fire points, penetration grade tests. The results showed ductility value decreased significantly when plastic content exceeded 0.5% by bitumen. Therefore, it was recommended optimal...

Reinforced concrete (RC) frames have been an indispensable part of the construction industry for several decades because they resist both gravity and lateral loads such that entire structure achieves a certain level performance against seismic as per performance-based design philosophy. The procedures RC often encounter many non-engineering defects, especially in developing countries where quality assurance check is cumbersome usually ignored. Among these presence insufficient rebar splice...