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Hema, C.
- Dressing of Structural Cracks using Bio Concrete
Abstract Views :256 |
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Authors
Affiliations
1 Department of Civil Engineering, Jerusalem College of Engineering, Chennai - 600100, Tamil Nadu, IN
2 Department of Civil Engineering, Bharath University, Chennai – 600073, Tamil Nadu, IN
1 Department of Civil Engineering, Jerusalem College of Engineering, Chennai - 600100, Tamil Nadu, IN
2 Department of Civil Engineering, Bharath University, Chennai – 600073, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 8, No 32 (2015), Pagination:Abstract
Microbiology induced cracks remediation technique is a method that has been proved beyond doubt of its efficiency. The review of literature carried out in this area indicates, that the work related to quantification of repair technique in comparison with conversional methods of repair is scarce. The investigation includes two different types of specimens namely cubes and damaged RC beams subjected to high temperature, that are already available. For the cube specimens two different water cement ratios (0.56) with normal, porous (no compaction) and cracked cubes are included. The cracking of cues is done in a pre determined way by inserting a 0.5mm thick aluminum plate to a depth of 75mm top on a 100mm size of concrete cube of m20 grade mix B. sphaericus is used for investigations. The investigation of damaged beams includes three different digress of damages namely, low medium, and high, determined by rebound hammer and Ultrasonic pulse velocity test. The comparison of results of cubes and rehabilitated beams lead to the conclusion, that the bio concrete application is the most effective one the cement mortar is the least effective method.Full Text
- Multiband Ring Shaped Fractal MIMO Antenna
Abstract Views :270 |
PDF Views:0
Authors
Affiliations
1 Department of Electronics and Communication Engineering, Sri Krishna College of Technology, IN
2 Department of Electronics and Communication Engineering, Dr. Mahalingam College of Engineering and Technology, IN
1 Department of Electronics and Communication Engineering, Sri Krishna College of Technology, IN
2 Department of Electronics and Communication Engineering, Dr. Mahalingam College of Engineering and Technology, IN
Source
ICTACT Journal on Communication Technology, Vol 10, No 2 (2019), Pagination: 1988-1993Abstract
A Ring shaped multiband fractal 2×2 MIMO antenna is proposed. The monopole antenna supports applications such as Bluetooth, GPS and PCS. The proposed antenna is fed with microstrip line feed. The antenna is designed with two different orientations 0° fractal ring antenna and 180° shifted fractal ring antenna. The antenna is simulated on 2D EM-simulator of ADS software. FR4 substrate is used and the overall size of the designed antenna is 70mm×45.3mm×1.6mm. The antenna is designed to operate for multiple frequencies with increase in gain, directivity, bandwidth and radiation efficiency. The 0 Fractal Ring configuration is better in terms of gain compared with 180 ring design.Keywords
Ring Antenna, MIMO, Fractal, Multiband.
References
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