A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
An Assessment of Efficiency Factors of Recycled Aggregate Concrete Bottle-Shaped Struts
The efficiency factors of bottle-shaped struts have been reanalysed using strut-and-tie models based on shear test data published in the literature. A total of 80 beam specimens made of recycled aggregate concrete, as well as control beam specimens of purely natural aggregate concrete, were considered in this study. The strut efficiency factor is the measure of performance of deep beams when they are analysed using strut-and-tie models. The measured values of efficiency factors of the recycled aggregate concrete bottle-shaped struts have been compared with those made of natural aggregate concrete and with the predictions of current design codes like the ACI 318-14, Eurocode2 and the AASHTO LFRD Bridge Design Specifications. The comparison of code recommendations has been made in order to make sure is the strut-and-tie modelling provisions of current design codes to evaluate strut efficiency factors of natural aggregate concrete bottle-shaped struts can conservatively be used for recycled aggregate concrete bottle-shaped struts or not. The results of the reanalysis indicate that the efficiency factors of natural as well as recycled aggregate concrete bottle-shaped struts are highly conservative when figured out against the predictions of AASHTO-2014, whereas both ACI 318-14 and Eurocode 2 gave predominantly unconservative efficiency factor predictions.
An Assessment of Efficiency Factors of Recycled Aggregate Concrete Bottle-Shaped Struts
The efficiency factors of bottle-shaped struts have been reanalysed using strut-and-tie models based on shear test data published in the literature. A total of 80 beam specimens made of recycled aggregate concrete, as well as control beam specimens of purely natural aggregate concrete, were considered in this study. The strut efficiency factor is the measure of performance of deep beams when they are analysed using strut-and-tie models. The measured values of efficiency factors of the recycled aggregate concrete bottle-shaped struts have been compared with those made of natural aggregate concrete and with the predictions of current design codes like the ACI 318-14, Eurocode2 and the AASHTO LFRD Bridge Design Specifications. The comparison of code recommendations has been made in order to make sure is the strut-and-tie modelling provisions of current design codes to evaluate strut efficiency factors of natural aggregate concrete bottle-shaped struts can conservatively be used for recycled aggregate concrete bottle-shaped struts or not. The results of the reanalysis indicate that the efficiency factors of natural as well as recycled aggregate concrete bottle-shaped struts are highly conservative when figured out against the predictions of AASHTO-2014, whereas both ACI 318-14 and Eurocode 2 gave predominantly unconservative efficiency factor predictions.
An Assessment of Efficiency Factors of Recycled Aggregate Concrete Bottle-Shaped Struts
Lecture Notes in Civil Engineering
Kondraivendhan, B. (editor) / Modhera, C. D. (editor) / Matsagar, Vasant (editor) / Chaudhari, Abhishek Devidas (author) / Suryawanshi, Shiwanand R. (author)
2022-05-14
7 pages
Article/Chapter (Book)
Electronic Resource
English
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