scholarly journals REVALUATION OF SHEAR RESISTANCE OF PERFOBOND STRIP CONSIDERING DIFFERENCE OF RIB PLATE AND CONCRETE BLOCK ARRANGEMENT

2018 ◽  
Vol 74 (1) ◽  
pp. 22-27
Author(s):  
Minh Hai NGUYEN ◽  
Akinori NAKAJIMA ◽  
Naoki TAKAHASHI ◽  
Miryu MIZUTORI ◽  
Masaki ONO ◽  
...  
Keyword(s):  
Concrete Block ◽  
Shear Resistance ◽  
Block Arrangement

EXPERIMENTAL STUDY ON SHEAR RESISTANCE EVALUATION OF PERFOBOND STRIP WITHOUT PENETRATING REBAR

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Nguyen Minh Hai ◽  
Nakajima Akinori
Keyword(s):  
Experimental Study ◽  
Concrete Block ◽  
Shear Resistance ◽  
Hybrid Structures ◽  
Shear Connector ◽  
Concrete Compressive Strength ◽  
Shear Connectors ◽  
Concrete Members ◽  
Stress Transmission ◽  
Push Out

In steel-concrete hybrid members and structures, to ensure required stress transmission between the steel and the concrete members, shear connectors are generally arranged between the two. A perfobond strip is widely used as the shear connector in various hybrid structures, and when applying the perfobond strip it is important to confirm its shear resistance. In this study, the shear resistance of the perfobond strip without the penetrating rebar is investigated experimentally by employing a simple push-out specimen. As a result, a design formula is proposed for evaluating the shear resistance of the perfobond strip, taking into account the dimensions of concrete block and the thickness of the perfobond plate, as well as the perforation diameter, and the concrete compressive strength.

scholarly journals Experimental Study on the Shear Behavior of Bolted Concrete Blocks with Oblique Shear Test

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Bo Meng ◽  
Hongwen Jing ◽  
Shengqi Yang ◽  
Yingchao Wang ◽  
Biao Li
Keyword(s):  
Shear Strength ◽  
Shear Failure ◽  
Normal Force ◽  
Concrete Block ◽  
Shear Resistance ◽  
Shear Behavior ◽  
Failure Plane ◽  
Residual Shear Strength ◽  
Apparent Cohesion ◽  
Concrete Blocks

The shear behavior of concrete blocks reinforced by fully grouted bolts with different diameters was studied in this paper. More than 90 intact cubic samples (100 mm × 100 mm × 100 mm) with bolts ranging from 2 mm to 5 mm in diameter were tested at a constant stain rate of 0.5 mm/min. An oblique shear apparatus, which could simultaneously apply shear and normal force on tested samples at three slope angles (53°, 58°, and 63°) of a predetermined shear plane, was employed. The results indicate that the bolt has no evident influence on the shear behavior of intact concrete blocks at the prepeak shear strength stage. The bolt could significantly reduce the shear strength drop in the peak shear strength of the concrete block and contribute to reserving the residual shear strength of concrete blocks, especially at steep slope angles of the shear failure plane. The shear resistance provided by the bolt to the concrete block at the residual shear slip stage has a positive relationship with the diameter. The bolt with a larger diameter inflected in the vicinity of the shear failure plane of concrete block at the postpeak shear strength stage; additional normal force and direct shear resistance could still be persistently provided. Two empirical equations of the apparent cohesion and apparent internal angle of the bolted concrete block were obtained by linear regression considering rb, which is the ratio of the cross-sectional area of the bolt to that of the bolted concrete block.

Causes of Failure in the Concrete Block Business

1906 ◽  
Vol 61 (1578supp) ◽  
pp. 25282-25283
Author(s):  
O. U. Miracle
Keyword(s):  
Concrete Block ◽  
Causes Of Failure
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