Punching shear resistance of lightweight aggregate concrete slabs

1990 ◽  
Vol 42 (152) ◽  
pp. 171-176 ◽  
Author(s):  
J. L. Clarke ◽  
F. K. Birjandi
Keyword(s):  
Lightweight Aggregate ◽  
Shear Resistance ◽  
Punching Shear ◽  
Lightweight Aggregate Concrete ◽  
Concrete Slabs ◽  
Aggregate Concrete

Study on Prestressed Concrete Slabs with Lightweight Aggregate

2012 ◽  
Vol 450-451 ◽  
pp. 338-342
Author(s):  
Ming Jie Mao ◽  
Qiu Ning Yang
Keyword(s):  
Shear Strength ◽  
Prestressed Concrete ◽  
Lightweight Concrete ◽  
Concrete Slab ◽  
Lightweight Aggregate ◽  
Punching Shear ◽  
Lightweight Aggregate Concrete ◽  
Concrete Slabs ◽  
Low Permeability ◽  
Aggregate Concrete

A lightweight aggregate with low permeability was employed in the concrete slab; and the strength of the slab is mainly discussed. The purpose of present study is to evaluate experimentally the punching shear strength of lightweight concrete slab, and to propose the punching shear strength equation for the slab with lightweight aggregate concrete. The applicability of the proposed equation to the both reinforced concrete and pre-stressed concrete slabs with lightweight aggregate concrete.

scholarly journals Experimental Investigations on Punching Shear of Flat Slabs Made from Lightweight Aggregate Concrete

2018 ◽  
Vol 64 (4) ◽  
pp. 293-306 ◽  
Author(s):  
M. Gołdyn ◽  
Ł. Krawczyk ◽  
W. Ryżyński ◽  
T. Urban
Keyword(s):  
Lightweight Concrete ◽  
Variable Parameter ◽  
Lightweight Aggregate ◽  
Reinforcement Ratio ◽  
Punching Shear ◽  
Lightweight Aggregate Concrete ◽  
Experimental Investigations ◽  
Concrete Slabs ◽  
Aggregate Concrete ◽  
Flat Slabs

Abstract In the paper the results of experimental investigations concerning flat slabs made from reinforced lightweight concrete with sintered fly ash aggregate CERTYD were presented. In the research program 6 models made in a natural scale were included. The main variable parameter was slab longitudinal reinforcement ratio. The aim of investigation was the experimental verification of efficiency of double-headed studs as punching shear reinforcement. In the existing technical approvals such kind of reinforcement was allowed only in normal concrete slabs. It was demonstrated that double-headed studs can be an effective transverse reinforcement of lightweight aggregate concrete slabs. The use of double-headed studs resulted in increase in the ultimate load from 19% to 44%, depending on the slab reinforcement ratio which ranged from 0.5% to 1.2%. The comparative analysis showed that the Eurocode 2 provisions were conservative in relation to the experimental results, which were on average 42% higher than the theoretical ones however with a very low 7% coefficient of variation.

scholarly journals Hidden Capital as an Alternative Method for Increasing Punching Shear Resistance of LWAC Flat Slabs

2019 ◽  
Vol 65 (4) ◽  
pp. 309-328
Author(s):  
M. Gołdyn ◽  
T. Urban
Keyword(s):  
Experimental Studies ◽  
Lightweight Aggregate ◽  
Shear Resistance ◽  
Punching Shear ◽  
Lightweight Aggregate Concrete ◽  
Control Element ◽  
Aggregate Concrete ◽  
Steel Fibres ◽  
Flat Slabs ◽  
Alternative Method

AbstractIn the paper an alternative method for increasing punching shear resistance of the flat slabs from lightweight aggregate concrete by means of hidden steel fibre reinforced capital was presented. Previous experimental studies demonstrated that the addition of steel fibres to concrete allows for increase in the punching shear resistance of flat slab. Steel fibres modify the tensile strength of concrete, which translates into increased ductility of the material. The results of the experimental investigations were presented, the aim of which was to assess the effectiveness of the proposed solution. For economic and technological reasons, a hidden capital of a height equal to half of the slabs depth was made so that the top reinforcement could be installed later. It was found that presented solution allowed to increase the load carrying capacity by about 36% with respect to the control element, made entirely of lightweight aggregate concrete.

Experimental investigations on punching shear of lightweight aggregate concrete flat slabs

2019 ◽  
Vol 197 ◽  
pp. 109371 ◽  
Author(s):  
Tadeusz Urban ◽  
Michał Gołdyn ◽  
Łukasz Krawczyk ◽  
Łukasz Sowa
Keyword(s):  
Lightweight Aggregate ◽  
Punching Shear ◽  
Lightweight Aggregate Concrete ◽  
Experimental Investigations ◽  
Aggregate Concrete ◽  
Flat Slabs

Experimental Study on Flexural Behaviors of All-Lightweight Aggregate Concrete Slabs

2012 ◽  
Vol 535-537 ◽  
pp. 1918-1922
Author(s):  
Yan Min Yang ◽  
Hao Zhang
Keyword(s):  
Experimental Study ◽  
Concrete Slab ◽  
Lightweight Aggregate ◽  
Lightweight Aggregate Concrete ◽  
Concrete Slabs ◽  
Intensity Level ◽  
Story Structure ◽  
Aggregate Concrete ◽  
Ordinary Concrete ◽  
Section Size

In order to study the feasibility that whether the all-lightweight aggregate concrete slabs can be the structural member， we test on 6 pieces of all-lightweight aggregate concrete slabs. The flexural behaviors of all-lightweight aggregate concrete slabs which have the same intensity level and section size is analyzed comparatively under the same mode of action， but different reinforcement situation. The result shows that the all-lightweight aggregate concrete slab has certain bearing capacity and deformation capacity. It can replace the ordinary concrete slab as load-bearing member. The experimental study in the paper can provide a basis of the lightweight and energy-saving multi-story structure.

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