Experimental study on bonding properties of fiber woven net with concrete

This work attempts a new strengthening method (one-step forming) between BFRP (basalt fiber reinforcement polymer) rod and bamboo. The interfacial bonding properties of the one-step forming pull-out specimens are achieved. The specimens are composed of bamboo sticks lamination and recombined bamboo respectively containing the plutruded BFRP rods. Through the experiment, bonding failure modes and typical load-slip curves are obtained. Besides, the ultimate bonding stress is compared to bonded-in method of FRP rod which embedded in wood. At last, anchoring calculation recommendations are delivered.

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Performance Analysis on CRA-Clad Pipes Extruded from Bimetallic Centrifugal Castings

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.287-290.2288 ◽

2011 ◽

Vol 287-290 ◽

pp. 2288-2293 ◽

Cited By ~ 1

Author(s):

Fa Gen Li ◽

Bin Wei ◽

Zhen Quan Bai ◽

Xue Hui Zhao

Keyword(s):

Heat Treatment ◽

Experimental Study ◽

Corrosion Resistance ◽

Chemical Elements ◽

Centrifugal Casting ◽

Interfacial Zone ◽

Bonding Properties ◽

Deformation Stress ◽

Application Requirements ◽

Extrusion Technology

Recently a new method for manufacturing bimetal clad pipes is introduced, which can integrate centrifugal casting with extrusion technology organically. Through experimental study on microstructure and properties of bimetallic clad pipes manufactured by centrifugal casting and extruding, the results indicates that bimetal clad pipes with intact metallurgical interface have good bonding properties. Meanwhile wider interfacial zone will be favorable for reducing deformation stress. However there are still a few technical difficulties about the bimetallic clad pipe. Due to chemical composition and properties difference between backing materials and CRA layer, chemical elements will spread and microstructure will change during the process of production and even mechanical behavior of backing metal pipe and corrosion resistance of CRA layer will decline. To meet application requirements, appropriate heat treatment with bimetal clad pipes seems vita.

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Experimental Study on the Flexural Tensile Properties of Fiber Reinforced Light-Weight Aggregate Concrete

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.341-342.1458 ◽

2013 ◽

Vol 341-342 ◽

pp. 1458-1462

Author(s):

Jian Gang Niu ◽

Jian Bao ◽

Yao Zhong Guo

Keyword(s):

Experimental Study ◽

Steel Fiber ◽

Breaking Strength ◽

Light Weight ◽

Test Results ◽

Fiber Reinforced ◽

Aggregate Concrete ◽

Tension Properties ◽

Bonding Properties ◽

Light Weight Aggregate

In order to investigate the effect of fiber reinforced light-weight aggregate concrete on flexural tension properties, five groups of steel fiber reinforced light-weight aggregate concrete (SFLWAC) specimens with different steel fiber volumes including 0.5%,1.0%,1.5%,2.0%,2.5% and another five groups of plastics-steel fiber reinforced light-weight aggregate concrete (PSFLWAC) specimens with different plastics-steel fiber volumes including 0.5%,0.7%,0.9%,1.1%,1.3% were tested. The test results show that fiber can greatly improve ductility, and there are good interfacial bonding properties between fiber and light-weight aggregate concrete. The test results also show that it is not obvious to the upgrade of the flexural strength of light-weight aggregate concrete of LC30 with plastics-steel fiber. But the addition of steel fiber can gradually improve the breaking strength owing to the increase of steel fiber volumes.

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An Experimental Study on Effect Factors of Post-Installed Bar in Concrete Anchorage and Bonding Performance

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.150-151.460 ◽

2010 ◽

Vol 150-151 ◽

pp. 460-463

Author(s):

Fan Li ◽

Ling Wang ◽

Ming Jie Zhou ◽

Xue Yong Wang

Keyword(s):

Experimental Study ◽

Tensile Strength ◽

Comparative Analysis ◽

Experimental Results ◽

Effect Factors ◽

Bonding Performance ◽

Pull Out ◽

Steel Bar ◽

Bonding Properties ◽

Failure Models

The bonding properties of post-installed bar in concrete are fundamental to evaluate the results of reinforced concrete. Including 102 specimen of post-installed bar and 18 specimen of embedded bar, 120 specimens were tested by pull-out test altogether. Comparative analysis considering diameter of steel bar, tensile strength of concrete, anchoring depth of steel bar, anchorage aperture are conducted. Based on the experimental results, it is shown that the bonding properties of post-installed bar are significantly influenced by steel bar, concrete tensile strength, installed depth bar and anchorage aperture. The ultimate average pullout forces of steels in specimen of post-installed bar and specimen of embedded bar are nearly equal. Three kinds of failure models are obtained. The experimental results can be useful for analyzing and evaluating bonding behaviors of post-installed bar in concrete.

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Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010013955x ◽

1995 ◽

Vol 53 ◽

pp. 636-637

Author(s):

Norio Baba ◽

Norihiko Ichise ◽

Syunya Watanabe

Keyword(s):

Experimental Study ◽

Spherical Aberration ◽

Incident Beam ◽

Optical Parameters ◽

Beam Tilting ◽

Illumination Method ◽

Restoration Method ◽

Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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