Optimum Design of a Ribbed Slab: A Brief Overview | Chapter 2 | Research and Developments in Engineering Research Vol. 6

 This member aimed to develop the design of reinforced cement concrete (RCC) teased slab, as known or named at another time or place waffle slab in accordance with the Indian RCC code (IS 456:2000). The linked cost of the reinforcement, actual, and formwork, which adds until the cost of the ribbed ingot, is the objective function of the optimisation problem. The direct design approach was used to analyse the waffle hunk.  The objective function was created afterwards a thorough reasoning of the ribbed slab. For miscellaneous grades of concrete, the optimisation process was secondhand. The comparative findings for differing concrete grades are filed and presented in level form.  Optimization for reinforced cement concrete (RCC) teased slab is pictorial and the results of the optimum design and conventional design are distinguished. The optimization question is a constrained nonlinear register problem (NLPP). The mathematical model was resolved by using MATHEMATICA operating system. The nonlinear programming problem was resolved by using the established step size arrangement. In the fixed step size order, the problem was examined for different values accompanying constant step time. From the analysis, it was establish that savings of up to 25 portion can be got by optimizing the reinforced ribbed rod.

Author(s) Details:

S. M. Imran,
Structural Engineering, School of Engineering and Technology, Kengeri Campus, Christ University, Bangalore – 560074, Karnataka, India.

R. Raghunandan Kumar,
Department of Civil Engineering, School of Engineering and Technology, Kengeri Campus, Christ University, Bangalore – 560074, Karnataka, India.

Arun Kumar,
Department of Sciences and Humanities, School of Engineering and Technology, Kengeri Campus, Christ University, Bangalore – 560074, Karnataka, India.

Please see the link here: https://stm.bookpi.org/RADER-V6/article/view/11549

A Study on RC Beams with Externally Bonded Carbon Fiber Reinforced Polymer (CFRP) Fabrics | Chapter 09 | Novel Perspectives of Engineering Research Vol. 10

 The flexural behaviour of carbon fibre reinforced polymer (CFRP) reinforced concrete (RC) beams is investigated in this work. Externally bonded CFRP fabric has been proved to be adaptable to a wide range of structures. This approach is currently being used to reinforce constructions such as columns, beams, walls, slabs, and so on. For flexural strengthening, 10 RC beams were cast and tested up to failure under monotonic and cyclic loads over an effective span of 3000 mm. The beams were constructed using under-reinforced concrete beams. Eight beams were reinforced with bonded CFRP fabric in a single layer and two layers parallel to the beam axis at the bottom and tested to failure under virgin conditions; the remaining two beams served as control specimens. The static and cyclic responses of all of the beams were evaluated in terms of strength, stiffness, ductility ratio, energy absorption capacity factor, compositeness of CFRP fabric and concrete, and failure modes. FEA software ANSYS was used to forecast the theoretical moment-curvature relationship as well as the load-displacement response of the strengthened and control beams. The results of the numerical (ANSYS) and experimental analyses have been compared. The reinforced beams had higher flexural strength, flexural stiffness, and composite action till failure, according to the findings. To get the desired outcomes, it was determined that at least two layers of CFRP fabric should be bonded. When compared to the control specimen, the strengthened beams RB1 (single layer) and RB3 (two layer) have a 20 percent and 45 percent increase in flexural strength, respectively, and the experimental and numerical (ANSYS) results are in close agreement.

Author(S) Details

R. Balamuralikrishnan
Department of Civil and Environmental Engineering, College of Engineering, NUST, Sultanate of Oman, Oman.

C. Antony Jeyasehar
Department of Civil and Structural Engineering, Annamalai University, Annamalainagar, 608 002, Tamil Nadu, India.

View Book:- https://stm.bookpi.org/NPER-V10/article/view/6513

Assessment of Concrete Mixes Replaced with Fly Ash and Reinforced with Steel and Polypropelene Fibres: Advanced Study | Chapter 12 | Emerging Trends in Engineering Research and Technology Vol. 6

This paper presents a series of tests for characterizing the structural behavior of fibre reinforced concrete subjected to different loading. The experimental program involves investigation of fly ash replaced concrete with two types of fibres i.e. Steel fibre and polypropylene fibre. Plain concrete and conventionally fly ash replaced reinforced concrete specimens have also been casted and tested in the laboratory. The mechanical properties of Conventional M30 grade of concrete and concrete with cement replaced by fly ash and reinforced with steel and polypropylene fibres of three volume fractions of 0.2% to 1.4% are studied. This research is to study about the mechanical properties of fly ash with steel and polypropylene as a strengthening material. 

Author(s) Details

Dr. S. Suresh
Department of Civil Engineering, Sona College of Technology, Salem, Tamil Nadu, India.

A. Sabarinathan
Anna University, Chennai, Tamil Nadu, India.

View Book :- http://bp.bookpi.org/index.php/bpi/catalog/book/200