scholarly journals Comparative Study on Performance of Precast Structural Insulated Panels with Different Shear Connectors

2021 ◽  
Author(s):  
Ajith M ◽  
Bharati Raj ◽  
Keerthy M Simon
Keyword(s):  
Comparative Study ◽  
Structural Integrity ◽  
High Strength ◽  
Shear Connector ◽  
Ductile Materials ◽  
Thermal Transmittance ◽  
Shear Connectors ◽  
Thermal Bridge ◽  
Structural Insulated Panels ◽  
U Value

Structural insulated panels (SIPs) made by sandwiching an insulating material from both sides have been used in buildings to enhance thermal resistance without loss in structural integrity. New innovations to improve its compositeness are also being explored. One method is to use shear connector made of high thermal resistant and ductile materials. This connects two outer wythes through insulation layer. The outer material can be of any type of high compressive strength concrete. These are usually reinforced with steel or carbon or glass fiber. The use of light weight and high strength materials helps to reduce the overall thickness of the structure. As the material of shear connector acts as a thermal bridge across the outer wythes, materials with low U value (thermal transmittance) are preferred. In this paper, an attempt has been made to carry out a comparative study on the performance of SIPs with shear connectors manufactured using different materials.

scholarly journals Behavior of an Advanced Bolted Shear Connector in Prefabricated Steel-Concrete Composite Beams

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2958 ◽  
Author(s):  
Jun Chen ◽  
Wei Wang ◽  
Fa-Xing Ding ◽  
Ping Xiang ◽  
Yu-Jie Yu ◽  
...  
Keyword(s):  
Composite Structures ◽  
Concrete Slab ◽  
Concrete Strength ◽  
High Strength ◽  
Fe Model ◽  
Building Structures ◽  
Shear Connector ◽  
Test Results ◽  
Shear Connectors ◽  
Bolt Pretension

The high-strength bolt shear connector in prefabricated concrete slab has advantages in applications as it reduces time during the construction of steel-concrete composite building structures and bridges. In this research, an innovative and advanced bolt shear connector in steel-concrete composite structures is proposed. To investigate the fundamental mechanical behavior and the damage form, 22 static push-off tests were conducted with consideration of different bolt dimensions, the reserved hole constraint condition, and the dimension of slab holes. A finite element (FE) model was established and verified by using test results, and then the model was utilized to investigate the influence of concrete strength, bolt dimension, yield strength, bolt pretension, as well as length-to-diameter ratio of high strength bolts on the performances of shear connectors. On the basis of FE simulation and test results, new design formulas for the calculation of shear resistance behavior were proposed, and comparisons were made with current standards, including AISC, EN 1994-1-1, GB 50017-2017, and relevant references, to check the calculation efficiency. It is confirmed that the proposed equation is in better agreement with the experimental results.

A Comparative Study of Ultimate Strength and Behaviour of Steel Concrete Composite Beam with Shear Connectors Subjected to Pure Torsion

2016 ◽  
Vol 13 (10) ◽  
pp. 6892-6895
Author(s):  
J Thivya ◽  
R Malathy ◽  
D Tensing
Keyword(s):  
Comparative Analysis ◽  
Comparative Study ◽  
Ultimate Strength ◽  
Composite Beam ◽  
Torsion Test ◽  
Shear Connector ◽  
Pure Torsion ◽  
Shear Connectors ◽  
Physical Response ◽  
Strength And Stiffness

This study concerns the employment of pure torsion analysis to determine ultimate strength of composite beam with shear connectors. The effect of shear connector is used for increasing the strength and stiffness of composite beam. This behavior is influenced by physical response of the beam under pure torsion. Totally 12 beams are tested and comparative analysis has been made within this 12 beams. The curvature, rotation and angle of twist are calculated throughout entire load by torsion test. This investigation proves that the composite beam with 75 mm spaced shear connector provides good ultimate strength.

Failure Mode Attribution Analysis of PBL Shear Connector

2013 ◽  
Vol 351-352 ◽  
pp. 683-686
Author(s):  
Wen Jiang Zhang ◽  
Er Xia Du ◽  
Bei Zhan Liu ◽  
Shao Chong Yang
Keyword(s):  
Failure Mode ◽  
Material Properties ◽  
High Strength Concrete ◽  
Failure Modes ◽  
Steel Plate ◽  
High Strength ◽  
Shear Connector ◽  
Related Factors ◽  
Shear Connectors ◽  
Attribution Analysis

Investigation on PBL shear connectors failure modes and their related factors is conducted. On the basis of analysis on the detail mechanism of PBL shear connectors failure modes, the relations between the construction factors and failure modes are summarized. A reasonable way of failure mode is proposed for exerting the material properties of all components in PBL shear connector. As reference to construction and design of PBL shear connector, it is advised that the high strength concrete should be used, and the strength of steel plate should be not less than that of rebar. The position and posture of rebar cannot be ignored.

COMPARATIVE STUDY OF THE STRUCTURAL INTEGRITY OF SPERMATOZOA IN EPIDIDYMAL, EJACULATED AND CRYOPRESERVED SEMEN OF STALLIONS

2017 ◽  
Vol 52 (2) ◽  
pp. 274-281
Author(s):  
M.M. Atroshchenko ◽  
◽  
V.V. Kalaschnikov ◽  
Ye.Ye. Bragina ◽  
A.M. Zaitsev ◽  
...  
Keyword(s):  
Comparative Study ◽  
Structural Integrity

scholarly journals Electrochemical treatment of high strength chrome bathwater: A comparative study for best-operating conditions

2021 ◽  
pp. 100093
Author(s):  
Vishakha Gilhotra ◽  
Rekha Yadav ◽  
Aditi Sugha ◽  
Laxmi Das ◽  
Ashutosh Vashisht ◽  
...  
Keyword(s):  
Comparative Study ◽  
High Strength ◽  
Electrochemical Treatment ◽  
Operating Conditions

scholarly journals Soil microbiomes mediate degradation of vinyl ester-based polymer composites

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Adam M. Breister ◽  
Muhammad A. Imam ◽  
Zhichao Zhou ◽  
Md Ariful Ahsan ◽  
Juan C. Noveron ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Polymer Composite ◽  
Structural Integrity ◽  
Abiotic Factors ◽  
High Strength ◽  
Strength Properties ◽  
Naturally Occurring ◽  
Structural Applications ◽  
Acrylate Esters ◽  
Bacterial Groups

AbstractPolymer composites are attractive for structural applications in the built environment due to their lightweight and high strength properties but suffer from degradation due to environmental factors. While abiotic factors like temperature, moisture, and ultraviolet light are well studied, little is known about the impacts of naturally occurring microbial communities on their structural integrity. Here we apply complementary time-series multi-omics of biofilms growing on polymer composites and materials characterization to elucidate the processes driving their degradation. We measured a reduction in mechanical properties due to biologically driven molecular chain breakage of esters and reconstructed 121 microbial genomes to describe microbial diversity and pathways associated with polymer composite degradation. The polymer composite microbiome is dominated by four bacterial groups including the Candidate Phyla Radiation that possess pathways for breakdown of acrylate, esters, and bisphenol, abundant in composites. We provide a foundation for understanding interactions of next-generation structural materials with their natural environment that can predict their durability and drive future designs.

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