In the present study, an experimental investigation was carried out to evaluate the flexural and shear capacity of near surface mounted (NSM) reinforced concrete (RC) beams using carbon fibre reinforced polymer (CFRP) rebars. A total of 16 half scale beams were tested to study the flexural and shear responses of strengthened RC beams. The CFRP rebars were manufactured at structural testing centre using locally developed twisting equipment to strengthen the RC beams. Also, new anchor system was locally developed to predict the tensile characteristics of CFRP bars using universal testing machine. To examine the flexural and shear behaviour, all beams were tested under two-point loading system. It was observed that the NSM strengthened RC beams have higher load carrying capacity than the corresponding control beam in flexure and shear by 68% and 35.6%, respectively. Typical failure modes of the beams during the experimental investigation were CFRP rupture, CFRP debonding, crushing of concrete and shear failure. Finally, a design example has been presented for better understanding in the analysis and design of NSM FRP strengthened RC beams. Further, the values obtained from the analytical study are in good agreement with the experimental values.
- Inderscience Publishers
- Performance of NSM-FRP RC beams in flexure and shear using ...
How data and analytics are keeping Philly’s water safe
CH2M assisted Philadelphia to implement a Surveillance and Response System (SRS) demonstration project under the U.S. Environmental Protection Agency’s (EPA’s) Water Security Initiative. CH2M Global Director Smart Cities and Senior Technology Fellow Dr. Avinash S. Patwardhan and Ken Thompson, CH2M Deputy Director Intelligent Water Solutions and Senior Technology Fellow, identify how big data was used in Philadelphia in order to keep water safe. Big data, analytics and city operationsCity operators...
Tips to maintain your HPLC & UHPLC systems and columns
Recently, Ade Kujore (Cecil Instruments), Tracie Brombos (GenTech Scientific) and I were asked by Angelo De Palma, a well-respected writer for Lab Manager magazine, to contribute to an article about maintaining and caring about your laboratory instruments. Here are my tips/best practices for column and HPLC/UHPC/UPLC system maintenance. Maintaining your LC columns Proper storage of HPLC columns will increase longevity and performance. For long-term storage, it is best to follow manufacturer’s recommendatio...
Using Devices and Analytics in Safety
Technology touches virtually everything we do in modern society and in EH&S, it is becoming more prevalent by the day. Businesses can now use analytics and devices to vastly improve their safety strategy and, thanks to data that is obtainable from both humans and connected machines, make much smarter, strategic EH&S decisions. The rise of the robots The Internet of Things (IoT) may have given rise to kitchen appliances that connect to the web and wristwatches capable of tracking our fitness regimes,...
Method Scaling in Preparative HPLC: Analytical Method & Preparative Method
VOC: “I tried to scale up my analytical HPLC method to prep and it didn’t work.” Andy: This is one of the most common things we hear from chemists wanting to do preparative chromatography. We also hear the following question pretty often too: VOC: “I have a good analytical HPLC method, how do I scale it to prep?” Andy: In this short blog, I will provide some of the basic things to do when trying to scale an analytical method to prep. Analytical Method: Try and develop the best...
Comprehensive analysis of tobacco smoke using TD–GC×GC–TOF MS with Tandem Ionisation
The hazardous constituents of cigarette smoke have attracted considerable attention lately, especially with increasing regulation around the world limiting or banning smoking in public places – and even in private cars if children are present. From an analytical perspective, however, there is much that remains to be learnt about the composition of cigarette smoke, because of its high degree of complexity – tobacco smoke is thought to contain thousands of components across multiple chemical classes...