scholarly journals Experimental and numerical studies on the structural response of normal strength concrete slabs subjected to blast loading

2018 ◽  
Vol 174 ◽  
pp. 242-255 ◽  
Author(s):  
Martin Kristoffersen ◽  
Jon Eide Pettersen ◽  
Vegard Aune ◽  
Tore Børvik
Keyword(s):  
Structural Response ◽  
Blast Loading ◽  
Concrete Slabs ◽  
Normal Strength Concrete ◽  
Strength Concrete ◽  
Numerical Studies ◽  
Normal Strength

Nonlinear analysis of normal- and high-strength concrete slabs

1993 ◽  
Vol 20 (4) ◽  
pp. 696-707 ◽  
Author(s):  
H. Marzouk ◽  
Z. W. Chen
Keyword(s):  
Finite Element ◽  
Parametric Study ◽  
High Strength Concrete ◽  
High Strength ◽  
Nonlinear Finite Element ◽  
Concrete Slabs ◽  
Normal Strength Concrete ◽  
Tension Stiffening ◽  
Strength Concrete ◽  
Normal Strength

Concrete slabs supported on four edges and loaded axially and transversely are used in many civil engineering applications. High-strength concrete slabs are commonly used for marine structures and offshore platforms. The catastrophic nature of the failure exhibited by reinforced concrete slabs when subjected to concentrated loads has been a major concern for engineers over many years. Therefore, there is a great need to develop accurate numerical models suitable for normal-strength or high-strength concrete in order to reflect properly its structural behaviour.Proper simulation of the post-cracking behaviour of concrete has a significant effect on the nonlinear finite element response of such slabs. Cracking and post-cracking behaviour of concrete which includes aggregate interlock, dowel action, and tension-stiffening effects is especially crucial for any nonlinear concrete analysis. The post-cracking behaviour and the fracture energy properties of high-strength concrete are different from those of normal-strength concrete. This can be realized by comparing the experimental testing results of plain normal- and high-strength concrete. The experimental results of testing plain high-strength concrete in direct tension indicated that the total area under the stress - crack width curve in tension is different from that of normal-strength concrete.A suitable softening and tension-stiffening model is recommended for high-strength concrete; other existing models suitable for normal-strength concrete are discussed. The proposed post-cracking behaviour models are implemented in a nonlinear finite element program in order to check the validity of such models by comparing the actual experimental data with the finite element results. Finally, a parametric study was conducted to provide more insight into the behaviour of high-strength concrete slabs subjected to combined uniaxial in-plane loads and lateral loads. The effects of the magnitude of in-plane load and the sequence of loading on the structural behaviour of such slabs are examined. Key words: high-strength concrete, slabs, punching shear, fracture energy, tension-softening, tension-stiffening, parametric study.

Explosive spalling of normal strength concrete slabs subjected to severe fire

2010 ◽  
Vol 44 (5) ◽  
pp. 943-956 ◽  
Author(s):  
Faris Ali ◽  
Ali Nadjai ◽  
Abid Abu-Tair
Keyword(s):  
Concrete Slabs ◽  
Normal Strength Concrete ◽  
Explosive Spalling ◽  
Strength Concrete ◽  
Severe Fire ◽  
Normal Strength

Cyclic Response of Steel Fiber Reinforced Normal Strength Concrete Exterior Beam-Column Joint Under Reversed Cyclic Load

2020 ◽  
Vol 17 (9) ◽  
pp. 3940-3946
Author(s):  
B. Nambiyanna ◽  
H. M. Nayan ◽  
R. Prabhakara
Keyword(s):  
Structural Response ◽  
Fiber Reinforced ◽  
Normal Strength Concrete ◽  
Response Curves ◽  
Earthquake Loads ◽  
Strength Concrete ◽  
Moment Resisting ◽  
Column Joint ◽  
Normal Strength ◽  
And Performance

Failure investigation studies on a large number of buildings exposed to earthquake loads revealed that Beam-Column Joint (BCJ) is the most critical structural regions in any moment resisting RC structure. The structural response of RC moment resting frame system under the earthquake loads mainly depends on the behavior and performance of the BCJ. It should be designed and detailed properly to ensure safety and serviceability of the structure under various earthquake loads. In the present Experimental work, Normal Strength Concrete (NSC) Fiber Reinforced Beam-Column Joint specimens are cast and are subjected to Cyclic loading. Proportions of steel fibers used are 0%, 0.5% and 1%. Load response curves have been plotted to demonstrate change in the Energy absorption, Stiffness Degradation and Ductility factors.

Behaviour of high- and normal-strength concrete at early ages

2005 ◽  
Vol 57 (6) ◽  
pp. 339-345 ◽  
Author(s):  
X. Jin ◽  
Y. Shen ◽  
Z. Li
Keyword(s):  
Normal Strength Concrete ◽  
Strength Concrete ◽  
Normal Strength

scholarly journals Cyclic behavior of GFRP strengthened infilled RC frames with low and normal strength concrete

2019 ◽  
Vol 26 (1) ◽  
pp. 30-42 ◽  
Author(s):  
Mehmet Emin Arslan ◽  
Ahmet Durmuş ◽  
Metin Hüsem
Keyword(s):  
Lateral Loading ◽  
Cyclic Behavior ◽  
Test Results ◽  
Normal Strength Concrete ◽  
Strength Concrete ◽  
Rc Frames ◽  
Load Carrying ◽  
Concrete Blocks ◽  
Normal Strength ◽  
Infilled Rc Frames

AbstractThis paper presents the experimental behavior of plane, non-strengthened and glass fiber reinforced polymer (GFRP) strengthened infilled reinforced concrete (RC) frames with low strength concrete (LSC) and normal strength concrete (NSC) under lateral reversed cyclic loading. For this purpose, eight full-scale, one-bay, one-storey plane and infilled (brick and aerated concrete blocks which are commonly used in RC construction) RC frames with LSC and NSC were produced and in-plane lateral loading tests were carried out. Test results indicate that infill walls considerably change the behavior of frames by increasing rigidity and load carrying capacity. By contrast, GFRP fabric used for strengthening of infilled RC frames improves ductility, load carrying and energy dissipation capacity of infilled frames with LSC and NSC as well. After all the test results were evaluated together, a GFRP strengthened brick infilled frame demonstrated the best performance under cyclic lateral loading.

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