scholarly journals Assessment of glass fiber-reinforced polyester pipe powder in soil improvement

2021 ◽  
Author(s):  
Baki Bağriaçik ◽  
Ahmet Beycioğlu ◽  
Szymon Topolinski ◽  
Emre Akmaz ◽  
Sedat Sert ◽  
...  
Keyword(s):  
Bearing Capacity ◽  
Glass Fiber ◽  
Sandy Soil ◽  
Soil Improvement ◽  
Reinforced Soil ◽  
Shallow Foundation ◽  
Engineering Properties ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced ◽  
Foundation Model

AbstractThis study investigates the use of glass fiber-reinforced polyester (GRP) pipe powder (PP) for improving the bearing capacity of sandy soils. After a series of direct share tests, the optimum PP addition for improving the bearing capacity of soils was found to be 12%. Then, using the optimum PP addition, the bearing capacity of the soil was estimated through a series of loading tests on a shallow foundation model placed in a test box. The bearing capacity of sandy soil was improved by up to 30.7%. The ratio of the depth of the PP-reinforced soil to the diameter of the foundation model (H/D) of 1.25 could sufficiently strengthen sandy soil when the optimum PP ratio was used. Microstructural analyses showed that the increase in the bearing capacity can be attributed to the chopped fibers in the PP and their multiaxial distribution in the soil. Besides improving the engineering properties of soils, using PP as an additive in soils would reduce the accumulation of the industrial waste, thus providing a twofold benefit.

Bearing Capacity Improvement of Shallow Foundations Using Cement-Stabilized Sand

2016 ◽  
Vol 723 ◽  
pp. 795-800 ◽  
Author(s):  
Habib Rasouli ◽  
Hana Takhtfirouzeh ◽  
Abbasali Taghavi Ghalesari ◽  
Roya Hemati
Keyword(s):  
Bearing Capacity ◽  
Soil Stabilization ◽  
Cement Content ◽  
Experimental Tests ◽  
Dry Weight ◽  
Soil Improvement ◽  
Reinforced Soil ◽  
Shallow Foundation ◽  
Engineering Properties ◽  
Suitable Material

In order to attain a satisfactory level of safety and stability in the construction of structures on weak soil, one of the best solutions can be soil improvement. The addition of a certain percentage of some materials to the soil may compensate for its deficiency. Cement is a suitable material to be used for stabilization and modification of a wide variety of soils. By using this material, the engineering properties of soil can be improved. In this study, the effect of soil stabilization with cement on the bearing capacity of a shallow foundation was studied by employing finite element method. The material properties were obtained by conducting experimental tests on cement-stabilized sand. Cement varying from 2% to 8% by soil dry weight was added for stabilization. The effect of reinforced soil block dimensions, foundation width and cement content were investigated. From the results, it can be figured out that by stabilizing the soil below the foundation to certain dimensions with the necessary cement content, the bearing capacity of the foundation will increase to an acceptable level.

Experimental study on axial compression buckling of glass fiber reinforced plastics solid pole with circular cross-section

2022 ◽  
pp. 136943322110542
Author(s):  
Jianhui Si ◽  
Shixiong Qiu ◽  
Shuyang Feng ◽  
Jiebin Chen ◽  
Zhenshan Wang
Keyword(s):  
Bearing Capacity ◽  
Glass Fiber ◽  
Axial Compression ◽  
Slenderness Ratio ◽  
Circular Cross Section ◽  
Resin Matrix ◽  
Fiber Reinforced ◽  
Reinforced Plastics ◽  
Glass Fiber Reinforced ◽  
Fiber Reinforced Plastics

Glass fiber reinforced plastics are widely used in civil engineering because of their advantages such as light weight, high strength, good pollution resistance, and corrosion resistance. This study investigated the buckling bearing capacity, failure characteristics, and slenderness ratios of GFRP solid bars with circular cross-sections subjected to axial compression. A total of 18 specimens were categorized into six groups. The slenderness ratios ranged from 57 to 123. It was found from experiments that the instability mode of the specimens was extreme point instability, and a bearing capacity platform phenomenon was observed when overall lateral instability occurred. The failure mode was axial and transverse tearing failure of the material in the middle of the specimen. During buckling, the tensile side was transformed from the compression of the resin matrix to tension in the fibers. The elastic modulus of glass fiber was much lower than that of the resin matrix. After tension occurred, increased deformation led to a rapid increase in lateral bending, which resulted in the phenomenon of the bearing platform. At ultimate deformation, brittle failure of the specimen occurred. The buckling load of the specimen decreased sharply with an increase in the slenderness ratio, and stress ratios decreased from 34.95% to 6.73%. It is suggested that the slenderness ratio not exceed 80. Finally, based on experimental results, a practical method for calculating the stable bearing capacity of solid GFRP poles is proposed.

Experimental Investigations of Masonry Columns Strengthened by SGFRP under Eccentric Loads

2013 ◽  
Vol 351-352 ◽  
pp. 1509-1513
Author(s):  
Zhi Zhang ◽  
Qian Gu ◽  
Qi Ming Yu
Keyword(s):  
Bearing Capacity ◽  
Glass Fiber ◽  
Seismic Behavior ◽  
Failure Modes ◽  
Fiber Reinforced Polymer ◽  
Experimental Investigations ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced Polymer ◽  
Reinforced Polymer ◽  
Glass Fiber Reinforced

5 masonry columns were strengthened by Sprayed Glass Fiber Reinforced Polymer (SGFRP) in this paper, and a research of the seismic behavior of them tested by eccentric loading experiment was presented. The failure modes of the strengthened masonry columns were illustrated and strengthening effects of them were discussed. The results showed that the bearing capacity of the reinforced columns increased greatly, and the ductility of them also improved significantly. Comparing the strengthening effects of the columns when the thickness of SGFRP and the number of glass fiber are different, some reasonable reinforce suggestions are proposed.

Load bearing capacity of rice husk added glass fiber reinforced hollow block wall

2020 ◽  
Author(s):  
Srija Juluru ◽  
R. Divahar ◽  
G. Harishwar Goud ◽  
N. Mohan Chand ◽  
L. Rahul Reddy
Keyword(s):  
Bearing Capacity ◽  
Glass Fiber ◽  
Rice Husk ◽  
Fiber Reinforced ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Glass Fiber Reinforced ◽  
Hollow Block ◽  
Block Wall

scholarly journals Load-Bearing Capacity and Fracture Behavior of Glass Fiber-Reinforced Composite Cranioplasty Implants

2017 ◽  
Vol 15 (4) ◽  
pp. e356-e361 ◽  
Author(s):  
Jaakko M. Piitulainen ◽  
Riina Mattila ◽  
Niko Moritz ◽  
Pekka K. Vallittu
Keyword(s):  
Plastic Deformation ◽  
Bearing Capacity ◽  
Glass Fiber ◽  
Resin Matrix ◽  
Fiber Reinforced ◽  
Loading Test ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Glass Fiber Reinforced ◽  
Elastic And Plastic Deformation

Background Glass fiber-reinforced composites (FRCs) have been adapted for routine clinical use in various dental restorations and are presently also used in cranial implants. The aim of this study was to measure the load-bearing capacity and failure type of glass FRC implants during static loading with and without interconnective bars and with different fixation modes. Methods Load-bearing capacities of 2 types of FRC implants with 4 different fixation modes were experimentally tested. The sandwich-like FRC implants were made of 2 sheets of woven FRC fabric, which consisted of silanized, woven E-glass fiber fabrics impregnated in BisGMA-TEGDMA monomer resin matrix. The space between the outer and inner surfaces was filled with glass particles. All FRC implants were tested up to a 10-mm deflection with load-bearing capacity determined at 6-mm deflection. The experimental groups were compared using non-parametric Kruskal-Wallis analysis with Steel-Dwass post hoc test. Results FRC implants underwent elastic and plastic deformation until 6-mm deflection. The loading test did not demonstrate any protrusions of glass fibers or cut fiber even at 10-mm deflection. An elastic and plastic deformation of the implant occurred until the FRC sheets were separated from each other. In the cases of the freestanding setup (no fixation) and the fixation with 6 screws, the FRC implants with 2 interconnective bars showed a significantly higher load-bearing capacity compared with the implant without interconnective bars. Conclusions FRC implants used in this study showed a load-bearing capacity which may provide protection for the brain after cranial bone defect reconstruction.

Experimental Study on Concrete-Filled Glass Fiber Reinforced Gypsum Wall Panel Compression Members

2012 ◽  
Vol 446-449 ◽  
pp. 16-22
Author(s):  
Kao Zhong Zhao ◽  
Feng Wang ◽  
Xiao Feng Bian
Keyword(s):  
Bearing Capacity ◽  
Glass Fiber ◽  
Structural Design ◽  
Thickness Ratio ◽  
Fiber Reinforced ◽  
Wall Panel ◽  
Glass Fiber Reinforced ◽  
Compression Members ◽  
Wall Panels ◽  
Capacity Calculation

The concrete-filled glass fiber reinforced gypsum wall panel is a kind of panel that the inside cavums of the glass fiber hollow gypsum panel are filled with concrete, which can be used as the bearing wall of a building. The influences of eccentricity distance and height to thickness ratio on the bearing capacity of the compression wall panels were studied, and the failure mechanism and bearing capacity of compression wall panels were gained through the experiments of twenty-seven(nine groups) axial compression wall panel specimens and twenty-seven(nine groups) eccentric compression wall panel specimens. The analysis results indicate that the bearing capacity of compression wall panels is obviously affected by the eccentricity distance and height to thickness ratio, and there is a linear relation between bearing capacity and eccentricity distance. The bearing capacity calculation formula of the concrete-filled glass fiber reinforced gypsum wall panel is obtained by regression analysis, which provides reliable gist for structural design of concrete-filled glass fiber reinforced gypsum wall panel buildings.

Sign in / Sign up

Export Citation Format

Share Document