Bonding strength test method assessment for Cross-Laminated Timber Derived Stressed-Skin Panels (CLT SSP)

2017 ◽  
Vol 50 (4) ◽  
Author(s):  
Emilio Luengo ◽  
Eva Hermoso ◽  
Juan Carlos Cabrero ◽  
Francisco Arriaga
Keyword(s):  
Bonding Strength ◽  
Strength Test ◽  
Test Method ◽  
Cross Laminated Timber ◽  
Skin Panels

scholarly journals An Innovative Test Method for Tensile Strength of Concrete by Applying the Strut-and-Tie Methodology

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2776 ◽  
Author(s):  
Wen-Cheng Liao ◽  
Po-Shao Chen ◽  
Chung-Wen Hung ◽  
Suyash Kishor Wagh
Keyword(s):  
Tensile Strength ◽  
Test Methods ◽  
Standard Test ◽  
Strength Test ◽  
Tension Test ◽  
Test Method ◽  
Direct Tension ◽  
Direct Tension Test ◽  
Strut And Tie ◽  
Tensile Strength Test

Tensile strength is one of the important mechanical properties of concrete, but it is difficult to measure accurately due to the brittle nature of concrete in tension. The three widely used test methods for measuring the tensile strength of concrete each have their shortcomings: the direct tension test equipment is not easy to set up, particularly for alignment, and there are no standard test specifications; the tensile strengths obtained from the test method of splitting tensile strength (American Society for Testing and Materials, ASTM C496) and that of flexural strength of concrete (ASTM C78) are significantly different from the actual tensile strength owing to mechanisms of methodologies and test setup. The objective of this research is to develop a new concrete tensile strength test method that is easy to conduct and the result is close to the direct tension strength. By applying the strut-and-tie concept and modifying the experimental design of the ASTM C78, a new concrete tensile strength test method is proposed. The test results show that the concrete tensile strength obtained by this proposed method is close to the value obtained from the direct tension test for concrete with compressive strengths from 25 to 55 MPa. It shows that this innovative test method, which is precise and easy to conduct, can be an effective alternative for tensile strength of concrete.

Development of a shear strength test method for NITE–SiC joining material

2011 ◽  
Vol 417 (1-3) ◽  
pp. 383-386 ◽  
Author(s):  
Hun-Chea Jung ◽  
Tatsuya Hinoki ◽  
Yutai Katoh ◽  
Akira Kohyama
Keyword(s):  
Shear Strength ◽  
Strength Test ◽  
Test Method ◽  
Shear Strength Test

Effect of Liquid Oxidation Surface Treatment on Bonding Properties of Wood/Polyethylene Composites

2011 ◽  
Vol 66-68 ◽  
pp. 907-910 ◽  
Author(s):  
Xiao Lei Teng ◽  
Ming Wei Di
Keyword(s):  
Contact Angle ◽  
Bonding Strength ◽  
Strength Test ◽  
Treated Sample ◽  
Before And After ◽  
Bonding Properties ◽  
Shear Bonding Strength ◽  
Scanning Electron ◽  
Oxidation Surface ◽  
Polyethylene Composites

In this paper the surface of wood/polyethylene (PE) composites were treated by liquid oxidation, and the structure of surface for wood/polyethylene composites before and after treatment was characterized by contact angle, fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM); combined with bonding strength test, the effect of concentration for handling solution and addition of oxidant on bonding properties of wood/polyethylene composites was also investigated. The results showed that the contact angle of surface for wood/polyethylene composites reduced and the surface wettability had been improved after liquid oxidation; the -C-O- and C=O functional groups were formed on the treated surface and the surface roughness increased; meanwhile, the shear bonding strength for the treated sample increased significantly after treatment. And these changes would be more obvious when enhancing the concentration of handling solution and adding oxidant.

scholarly journals Potency Of Sugarcane Bagasse Ash Partial Substitution Of Cement In Concrete

2019 ◽  
Author(s):  
Ismail Marzuki ◽  
Erniati Bachtiar ◽  
ASRI MULYA SETIAWAN ◽  
SRIGUSTY
Keyword(s):  
Compressive Strength ◽  
Sugarcane Bagasse ◽  
Construction Material ◽  
Standard Condition ◽  
Strength Test ◽  
Test Method ◽  
Partial Substitution ◽  
Sugar Factory ◽  
Compressive Strength Test ◽  
Sugarcane Bagasse Ash

the availability of sugarcane bagasse ash produced by Arasoe Sugar Factory, it is not used utilized. That sugarcane bagasse ash has size very fine that it can pollute the air. The sugarcane bagasse ash has silicate content, and it has pozzolan properties. The needs of construction material are something that to think about that. It is an alternative to substitute the using of cement in concrete construction. This study is aimed to find the potential of sugarcane bagasse ash in Arasoe Sugar Factory for partial substitution of cement in concrete. The sample made from the variety of sugarcane bagasse ash 0%, 2.5%, 5%, and 7.5% as partial substitution of cement in concrete. The ratio of water and cement is 0.45. The specimen of concrete is taken care in standard condition at the laboratory and compressive strength test when the sample is in 28, 45, and 62 days old. The compressive strength test refers to ASTM C39/ C39M-01 (Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens). The development of compressive strength of concrete with many variations of sugarcane bagasse ash 0% 2.5%, 5% is increasing along with the age of concrete, however in contrast with 7.5% of sugarcane bagasse ash the decreasing in 60 days old later. Partial substitute of sugarcane bagasse ash in concrete is possible to do in an amount about 5% of sugarcane bagasse ash

scholarly journals Experimental Study of Brazilian Tensile Strength of Concrete Under Static Loads

2020 ◽  
Vol 206 ◽  
pp. 01018
Author(s):  
Rui Li ◽  
Lei Liu ◽  
Zhihua Zhang ◽  
Huaming An
Keyword(s):  
Tensile Strength ◽  
Testing Machine ◽  
Damage Index ◽  
Modern Society ◽  
Strength Test ◽  
Test Method ◽  
Tensile Failure ◽  
Brazilian Tensile Strength ◽  
Failure Patterns ◽  
Tensile Strength Test

Concrete is one of the most significant materials in modern society. It is widely used in many projects. Thus it is essential to study the strength and the failure patterns of this material. As well known, the compressive strength is much higher than the tensile strength for concrete. Thus, it is easy to fail due to the tensile strength for concrete. Thus, this paper focuses on the study of the tensile strength of the concrete and its failure patterns. Three types of concretes are made for studying the tensile strengths and the failure patterns of the concretes. Then the Brazilian tensile strength test method is employed in this study. The mythology of calculating tensile strength by the Brazilian tensile strength test method is introduced. Many discs are made for the tests. The Rock mechanics testing machine is used to excavate pressure on the top and bottom of the disc. It is concluded that the failure of the disc is along the vertical diameter between the top and bottom plates contacting the dis. The tensile failure is not obviously influenced by the ratios of the materials while the tensile strength is significantly influenced by the ratios of the concrete. The damage index of concrete is also proposed to describe the capabilities of resisting failure.

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