Experimental Study on Concrete Slab Combined with Permanent Cement Formwork with Joints

2011 ◽  
Vol 243-249 ◽  
pp. 1283-1287
Author(s):  
Xiao Ruan Song ◽  
Pei Ge Liu ◽  
Xiao Yun Zhang ◽  
Yu Ting Qu ◽  
Ji Min Xu
Keyword(s):  
Experimental Study ◽  
Bearing Capacity ◽  
Concrete Slab ◽  
Bond Quality ◽  
Static Test ◽  
Composite Cement ◽  
Ordinary Concrete ◽  
Composite Slabs

In this research, a kind of composite cement plates are utilized as permanent formworks, and poured concrete together to form composite slabs. Through static test of composite slabs with different bonding modes of interface between formwork and concrete, bearing capacity, deformability and cooperation states of concrete and composite formwork are studied. Through static test of composite slabs with splicing joints formworks at different positions, bond quality near the splicing joints are observed visually, stress nature and deformability variations resulted from different splicing joint positions of formwork are analyzed. And meanwhile, stress and deformability of the ordinary concrete slab without formwork is researched under the same conditions. Through above experiments, acting as a part of the slab, how composite formwork influence bearing capacity and deformability of the combined slab is investigated.

Experimental Study about Bearing Capacity and Deformation on Concrete Composite Slabs with Additional Bars

2013 ◽  
Vol 482 ◽  
pp. 7-10
Author(s):  
Jian Hua Cui ◽  
Chuan Yang Weng ◽  
Yun Lin Liu
Keyword(s):  
Experimental Study ◽  
Bearing Capacity ◽  
Failure Mode ◽  
Static Loading ◽  
Flexural Behavior ◽  
Flexural Properties ◽  
Effective Height ◽  
Composite Slabs

Through the experiments of four concrete composite slabs under static loading to compare their flexural properties (deflection, bearing capacity, failure mode), this paper discusses the influence of composite slabs flexural behavior on different length of additional bars and sectional effective height. The results showed that they will improve the bearing capacity effectively by reasonably increasing the sectional effective height and controlling the length of additional bars.

Discussion on Design Method of Bearing Capacity for Profiled Steel Plate-concrete Composite Floor Slab

2020 ◽  
Vol 5 (1) ◽  
pp. 9-10
Author(s):  
Yumu Liu ◽  
◽  
Li Peng ◽  
Keyword(s):  
Bearing Capacity ◽  
Steel Plate ◽  
Design Method ◽  
Concrete Slab ◽  
Steel Plates ◽  
Floor Slab ◽  
Ordinary Concrete ◽  
Calculation Results ◽  
Steel Composite ◽  
The Common

Profiled steel composite floor slab is widely used for its advantages of convenient construction and flexible design. In this paper, the structural forms and structural requirements of the composite floor slab with profiled steel plates are introduced, then the design and calculation principles are described.Through the comparative analysis of the composite floor slab and ordinary concrete slab calculation, results show that the composite slab of profiled steel plate has more bearing capacity than the common concrete slab of the same specification and can save cost effectively.

Durability of Ordinary Concrete after Heating at High Temperature

2016 ◽  
Vol 711 ◽  
pp. 428-435 ◽  
Author(s):  
Hélène Carré ◽  
Céline Perlot ◽  
Atef Daoud ◽  
Md Jihad Miah ◽  
Bassem Aidi
Keyword(s):  
Experimental Study ◽  
Compressive Strength ◽  
High Temperature ◽  
Absorption Coefficient ◽  
Bearing Capacity ◽  
Mercury Porosimetry ◽  
Target Temperature ◽  
Load Bearing Capacity ◽  
Ordinary Concrete ◽  
Durability Index

After a fire, the concrete structures are usually repaired. This repair requires a diagnosis so as to know the areas to be preserved and the areas to be demolished. In this analysis, the load-bearing capacity is often the primary endpoint. However, the question of the durability of the structure must also be asked. This experimental study aims to assess the durability of one ordinary concretes after heating at high temperature (up to 600 °C). The ordinary concrete have a compressive strength at 28 days of about 40 MPa. Five characteristics were determined for each target temperature (20, 120, 250, 400 and 600 °C): the compressive strength, the water porosity, the nitrogen permeability, the pore distribution by mercury porosimetry and the absorption coefficient. The evolution of the characteristics with temperature are evaluated. Their evolution with compressive strength is analysed and durability index are detailed. The results show that some correlation exist between the characteristics in particular between nitrogen permeability and water porosity. The evolution of durability index shows that the compressive strength is not sufficient to evaluate the durability of concrete after heating.

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.

scholarly journals Bearing Capacity of Steel-Polystyrene Concrete Slab

2021 ◽  
Vol 1079 (6) ◽  
pp. 062003
Author(s):  
Ya B Kostyuchenko ◽  
A A Varlamov ◽  
V I Rimshin ◽  
G S Bykov ◽  
S Roschina
Keyword(s):  
Bearing Capacity ◽  
Concrete Slab

scholarly journals Experimental Study on Residual Bearing Capacity of Existing Prestressed Concrete Hollow Slab Beam

2021 ◽  
Vol 632 ◽  
pp. 022063
Author(s):  
Baoqun Wang ◽  
Dejin Xing ◽  
Chengyong Chen ◽  
Zhongnan Tian ◽  
Gangnian Xu
Keyword(s):  
Experimental Study ◽  
Bearing Capacity ◽  
Prestressed Concrete

Experimental Investigation for Horizontal Ultimate Bearing Capacity and Target Ductility Factor Improvement Results of the RC Column Reinforced by AFL with Damages

2014 ◽  
Vol 488-489 ◽  
pp. 497-500
Author(s):  
You Lin Zou ◽  
Pei Yan Huang
Keyword(s):  
Bearing Capacity ◽  
Ultimate Bearing Capacity ◽  
Test Results ◽  
Rc Columns ◽  
Static Test ◽  
Rc Column ◽  
Ductility Factor ◽  
Secant Stiffness ◽  
Function Relationship ◽  
Reversed Cyclic

Deem test results from the low reversed cyclic loading quasi-static test with 2 RC columns as the basic information of secant stiffness damage of the reference column and take use of the TMS instrument in the test to artificially make the damage percentage of secant stiffness of the RC column as 33%, 50% and 66%, 6 damaged columns in total; reinforce the 6 damaged columns and 2 undamaged ones under the same conditions with AFL, through quasi-static contrast test. Test results show that it is able to effectively boost horizontal ultimate bearing capacity and ductility deformability of the RC columns with AFL for reinforcement; besides, there is a linear function relationship between horizontal ultimate bearing capacity, target ductility factor, and damage percentage of secant stiffness.

scholarly journals Experimental study of the dynamic behavior of ordinary concrete under local compression

2021 ◽  
Vol 14 ◽  
pp. e00528
Author(s):  
Feiting Shi ◽  
Yanan Gan ◽  
Zhangjie Cai ◽  
Yubing Du ◽  
Zhengdong Zhi
Keyword(s):  
Experimental Study ◽  
Dynamic Behavior ◽  
Ordinary Concrete
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