Experimental Researches on the Behavior of Polypropylene Pipes at the Physical-mechanical Testing

Lately, PP-R pipes have become increasingly popular in terms of drinking water installations and heating. Comparated to the classic pipes from copper or steel, pipes from propylene are much easier to use, they have obvious qualities and they are marketed at a much lower price. The study aims a comparative analysis of the physical-mechanical properties of the four most common types of pipes from propylene, which are currently found in commerce : simple without insertion(PP-R), with insert of composite fiber (PP-R-CF), with insert of basalt fiber (PP-R-BF) and with insert of aluminium (PP-R-AIF). Experimental research showed that from the point of view of thermal expansion, the best behavior is from the pipes from propylene without any insert and the value of the thermal expansion coefficient for the reinforcement pipe with basaltic fiber is very small. After these attempts at tensile, it resulted that all four samples which were analyzed from the point of view of the tensile strength, don�t exceed the limit that was given by the manufacturer (10-30 MPa), the values obtained being: for pipe from polypropylene of 17 MPa, for pipe from polypropylene with insert of aluminium of 18 MPa, for the test tube from pipe of polypropylene with insert of basalt fiber of 29 MPa and for the test tube from pipe of polypropylene with insert of composite fiber of 30 MPa. Therefore, from the point of view of the behavior at tensile and bending, the best behavior is from the pipes from polypropylene with insert of basalt fiber and pipes from polypropylene with insert of composite fiber.

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Further Investigation on Damage Model of Eco-Friendly Basalt Fiber Modified Asphalt Mixture under Freeze-Thaw Cycles

Applied Sciences ◽

10.3390/app9010060 ◽

2018 ◽

Vol 9 (1) ◽

pp. 60 ◽

Cited By ~ 18

Author(s):

Wensheng Wang ◽

Yongchun Cheng ◽

Guirong Ma ◽

Guojin Tan ◽

Xun Sun ◽

...

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Asphalt Mixture ◽

Basalt Fiber ◽

Asphalt Mixtures ◽

Splitting Tensile Strength ◽

Stiffness Modulus ◽

Freeze Thaw ◽

Damage Characteristics ◽

Indirect Tensile

The main distresses of asphalt pavements in seasonally frozen regions are due to the effects of water action, freeze-thaw cycles, and so on. Basalt fiber, as an eco-friendly mineral fiber with high mechanical performance, has been adopted to reinforce asphalt mixture in order to improve its mechanical properties. This study investigated the freeze-thaw damage characteristics of asphalt mixtures reinforced with eco-friendly basalt fiber by volume and mechanical properties—air voids, splitting tensile strength, and indirect tensile stiffness modulus tests. Test results indicated that asphalt mixtures reinforced with eco-friendly basalt fiber had better mechanical properties (i.e., splitting tensile strength and indirect tensile stiffness modulus) before and after freeze-thaw cycles. Furthermore, this study developed logistic damage models of asphalt mixtures in terms of the damage characteristics, and found that adding basalt fiber could significantly reduce the damage degree by about 25%, and slow down the damage grow rate by about 45% compared with control group without basalt fiber. Moreover, multi-variable grey models (GM) (1,N) were established for modelling the damage characteristics of asphalt mixtures under the effect of freeze-thaw cycles. GM (1,3) was proven as an effective prediction model to perform better in prediction accuracy compared to GM (1,2).

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TECHALLOY GLASSEAL 52

Alloy Digest ◽

10.31399/asm.ad.ni0260 ◽

1979 ◽

Vol 28 (5) ◽

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Thermal Expansion ◽

Physical Properties ◽

Surface Treatment ◽

Tensile Properties ◽

Iron Alloy ◽

Heat Treating ◽

Nickel Iron ◽

Nickel Iron Alloy

Abstract TECHALLOY GLASSEAL 52 is a nickel-iron alloy produced for glass-to-metal seals with higher than normal thermal-expansion glasses such as Types 0120 and 9010, and certain ceramics. It has relatively good mechanical properties: a tensile strength of 80,000 psi and an elongation of 35%. It is used in a number of applications where expansion is required to be almost linear to 1000 F. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: Ni-260. Producer or source: Techalloy Company Inc..

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Mechanical Properties of Reinforced Polymer Concrete with Three Types of Resin Systems

Proceedings of the Institution of Civil Engineers - Construction Materials ◽

10.1680/jcoma.21.00060 ◽

2022 ◽

pp. 1-24

Author(s):

Mostafa Hassani Niaki ◽

Morteza Ghorbanzadeh Ahangari ◽

Abdolhossein Fereidoon

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Compressive Strength ◽

Impact Strength ◽

Flexural Strength ◽

Polyurethane Foam ◽

Basalt Fiber ◽

Polymer Concrete ◽

Weight Percentage ◽

Reinforced Polymer

This paper studies the mechanical properties of polymer concrete (PC) with three types of resin systems. First, the effect of 0.5 wt% up to 3 wt% basalt fiber on the mechanical properties of a quaternary epoxy-based PC is investigated experimentally, and the best weight percentage of basalt fiber is obtained. The results show that adding basalt fiber to PC caused the greatest enhancement within 10% in compressive strength, 10% in flexural strength, 35% in the splitting tensile strength, and 315% in impact strength. In the next step, the effect of nanoclay particles on the mechanical properties of basalt fiber-reinforced PC (BFRPC) is analyzed experimentally. Nanoclays increase the compressive strength up to 7%, flexural strength up to 27%, and impact strength up to 260% but decrease the tensile strength of the PC. Field-emission scanning electron microscopy (FESEM) analysis is performed to study the fracture surface and morphology of various concrete specimens. In the last step, we consider the effect of two other different resin systems, rigid polyurethane and rigid polyurethane foam on the mechanical properties of reinforced polymer concrete. A comparison study presents that the epoxy PC has a higher specific strength than the polyurethane and ultra-lightweight polyurethane foam PC.

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Mechanical and Thermal Properties of R-High Density Polyethylene Composites Reinforced with Wheat Straw Particleboard Dust and Basalt Fiber

International Journal of Polymer Science ◽

10.1155/2018/5101937 ◽

2018 ◽

Vol 2018 ◽

pp. 1-10

Author(s):

Min Yu ◽

Haiyan Mao ◽

Runzhou Huang ◽

Zhenghao Ge ◽

Pujian Tian ◽

...

Keyword(s):

Mechanical Properties ◽

Thermal Expansion ◽

Wheat Straw ◽

High Density Polyethylene ◽

Coefficient Of Thermal Expansion ◽

Basalt Fiber ◽

High Density ◽

Mechanical And Thermal Properties ◽

Linear Coefficient ◽

Loading Level

The effect of individual and combined particleboard dust (PB dust) and basalt fibers (BFs) on mechanical and thermal expansion performance of the filled virgin and recycled high density polyethylene (HDPE) composites was studied. It was shown that the use of PB dust had a positive effect on improving mechanical properties and on reducing linear coefficient of thermal expansion (LCTE) values of filled composites, because the adhesive of the particle board held the wheat straw fibers into bundles, which made PB dust have a certain aspect ratio and high strength. Compared with the commonly used commercial WPC products, the flexural strength of PB dust/VHDPE, PB dust/RHDPE, and PB dust/VHDPE/RHDEPE at 40 wt% loading level increased by 79.9%, 41.5%, and 53.9%, respectively. When 40 wt% PB dust was added, the crystallization degree of the composites based on three matrixes decreased to 72.5%, 45.7%, and 64.1%, respectively. The use of PB dust can help lower the composite costs and increase its recyclability. Mechanical properties and LCTE values of composites with combined BF and PB dust fillers varied with PB dust and BF ratio at a given total filler loading level. As the BF portion of the PB dust/BF fillers increased, the LCTE values decreased markedly, which was suggested to be able to achieve a desirable dimensional stability for composites. The process provides a useful route to further recycling of agricultural wastes.

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Experimental Investigation on the Mechanical Properties and Microstructure of Basalt Fiber Reinforced Engineered Cementitious Composite

Materials ◽

10.3390/ma13173796 ◽

2020 ◽

Vol 13 (17) ◽

pp. 3796

Author(s):

Qiang Du ◽

Changlu Cai ◽

Jing Lv ◽

Jiao Wu ◽

Ting Pan ◽

...

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Flexural Strength ◽

Basalt Fiber ◽

Sem Analysis ◽

Splitting Tensile Strength ◽

Cementitious Composite ◽

Fiber Reinforced ◽

Bond Quality ◽

Engineered Cementitious Composite

This study investigated fundamental mechanical properties of a basalt fiber reinforced engineered cementitious composite (BF-ECC) with different volume fractions of basalt fiber (BF), water–binder ratio (W/B) and fly ash (FA) content. The compressive strength, splitting tensile strength, flexural strength and static modulus of BF-ECC were studied at 3, 28 and 56 days, respectively, to explore their development along the ages. Furthermore, the scanning electron microscopy (SEM) analysis was conducted to evaluate the microstructure of BF-ECC. Experiment results demonstrated that bond quality between the BF and the matrix is good, which leads to a significant increase in the flexural strength and splitting tensile strength. The pozzolanic effect of FA obviously improved the splitting tensile and flexural strength of BF-ECC after 56 days of curing, and the appropriate content of the FA content in the BF-ECC ranges from 50% to 60%.

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Some Physical and Mechanical Properties of Pbo Fiber

MRS Proceedings ◽

10.1557/proc-134-307 ◽

1988 ◽

Vol 134 ◽

Cited By ~ 5

Author(s):

J. Im ◽

P.A. Percha ◽

D.S. Yeakle

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Thermal Expansion ◽

Tensile Properties ◽

Coefficient Of Thermal Expansion ◽

Physical And Mechanical Properties ◽

Gage Length ◽

Dead Load ◽

Fiber Tension ◽

Pbo Fiber

ABSTRACTThe tensile properties of poly (paraphenylene benzobisoxazole) or PBO fiber strands were studied using two variables: gage length and the number of twists per inch. The gage length was varied from 1 to 10 inches with 2 twists of the fiber per inch. The effect of the number of twists per inch was studied by varying the number of twists from zero to 10 along a 5-inch gage length. The trends of tensile strength and modulus due to these variables were established and appropriate explanations of these behaviors are provided.The coefficient of thermal expansion (CTE) was studied on bare strands of PBO and Kevlar 49 (a product of Du Pont de Nemours & Co.) fibers, using a Du Pont 943 Thermomechanical Analyzer (TMA) equipped with a film and fiber tension assembly. The axial CTE of both fibers exhibited a dependence on the small dead load employed to keep the fibers straight. Kevlar 49 fiber, when wet, attained a much less negative value of CTE than when dry. In contrast, PBO fiber absorbed very little moisture, and the CTE remained unchanged.

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Analyze the effect of phosphorus on the mechanical properties and microstructure on cast iron

MATEC Web of Conferences ◽

10.1051/matecconf/201820405008 ◽

2018 ◽

Vol 204 ◽

pp. 05008

Author(s):

Achmad Sambas ◽

Ananto Gamawan ◽

Sophiadi Gunara

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Cast Iron ◽

Mechanical Testing ◽

Aluminum Electrolysis ◽

Point Of View ◽

Carbon Anode ◽

Electrolysis Process ◽

Microstructure Observation ◽

Phosphorus Alloy

Cast Iron FC250 with phosphorus alloy is used as electrode connector in the aluminum electrolysis process at PT. Indonesia Asahan Aluminium (Inalum), that is used to connect the rod with carbon anode. It will be crushed after the carbon anode dimension is reduced, that takes approximately 30 days. In order to make crushing process easier, phosphorus alloy then added into such FC250. The objective of the study is determining phosphorus effect on FC 250. The methodology consists of determine the test specimens, initiate such specimen of casting by varying the amount of phosphorus percentage of 0.3%, 0.5%, 0.7% and 0.9%, then perform mechanical testing and microstructure observation on each specimen. The result is, as the percentage of phosphorus in FC 250 increased, so its hardness value whereas the value of the tensile strength even decreased. Form the microstructure point of view, the “steadit” increased as well in line with the rise of phosphorus.

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Basalt Reinforced Plastic - Development and Modeling of Part

Materials Science Forum ◽

10.4028/www.scientific.net/msf.994.115 ◽

2020 ◽

Vol 994 ◽

pp. 115-124

Author(s):

Josef Vosáhlo ◽

Martina Ryvolová

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Basalt Fiber ◽

Composite Plates ◽

Industrial Applications ◽

Strength Test ◽

Woven Fabric ◽

Basalt Fibers ◽

Tensile Strength Test ◽

Reinforced Plastic

Basalt fibers are increasingly emerging as reinforcement of composite materials. Their use is purely technical, depending on the properties of the basalt fibers: thermal, chemical and electrical resistance, good mechanical properties and low environmental impact. Basalt fibers reinforced plastics penetrate to automotive, aerospace, building construction and building reparation, industrial applications, oil industry and sport tools. The topic of the paper is to find out the mechanical properties of basalt fiber reinforced plastic (BFRP) and to create a model of split pin that is originally made of steel. Basalt woven fabric was selected for this experiment. Two weave - plain and twill was available. Tensile strength test was made in three basic directions: 0°, 90° and 45°. Epoxy resin was used for production composite plates with one layer basalt reinforcement. Tensile strength test of composite plates provided input parameters for numerical model of small composite part - split pin. Real composite split pin will produced according to modeling properties. Weight decrease was supposed, this assumption was confirmed.

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Characterization of Internal Defects and Fiber Distribution of BFRC Based on the Digital Image Processing Technology

Crystals ◽

10.3390/cryst11080847 ◽

2021 ◽

Vol 11 (8) ◽

pp. 847

Author(s):

Fengbin Chen ◽

Bin Xu ◽

Huazhe Jiao ◽

Zhuen Ruan ◽

Juanhong Liu ◽

...

Keyword(s):

Mechanical Properties ◽

Image Processing ◽

Tensile Strength ◽

Compressive Strength ◽

Digital Image Processing ◽

Digital Image ◽

Basalt Fiber ◽

Fiber Content ◽

Fiber Distribution ◽

Fiber Concrete

Adding basalt fiber into concrete can significantly improve its mechanical properties. In order to explore the influence of basalt fiber content on the uniaxial compressive strength and splitting tensile strength of concrete and the mechanism of fiber action, this paper conducts compressive and splitting tensile tests on three kinds of basalt fiber concrete specimens with different fiber content and obtains the relationship between the macro mechanical properties and the fiber content. At the same time, with the help of CT scanning equipment and digital image processing technology, the microstructure of basalt fiber concrete with three groups of fiber content is reconstructed, and the pore, crack, and fiber distribution are quantitatively described using the calculation and processing function of the Avizo reconstruction software. The results show that when the optimal fiber content is 3 kg/m3, the improvement rates of uniaxial compressive strength and splitting tensile strength are 31.9% and 23.7%, respectively. The network structure formed by fiber in concrete has the best compactness and the least number of pores, with an average sphericity of 0.89 and an average pore volume of 20.26 μm3. Through analysis, it was found that the initial defects of basalt fiber concrete exist in the form of pores, and the addition of basalt fiber will destroy the large pore size of concrete, change the pore size distribution, and increase the average sphericity; The distribution of the fiber in the concrete is a three-dimensional network, and the distribution of the fiber in the initial defect distribution area is parallel to the direction of pore arrangement.

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Effect of Fluidity of Cement Mortar and Dispersion of Basalt Fibers on Mechanical Properties of BFRC Composites

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.671-674.1869 ◽

2013 ◽

Vol 671-674 ◽

pp. 1869-1872 ◽

Cited By ~ 1

Author(s):

Wen Min He ◽

Shuan Fa Chen ◽

Chuang Wang ◽

Xue Gang Zhang ◽

Rui Xiong

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Compressive Strength ◽

Fly Ash ◽

Cement Mortar ◽

Basalt Fiber ◽

Cement Matrix ◽

Basalt Fibers ◽

Dispersion Degree ◽

Actual Effectiveness

Basalt fiber (BF) has a lot of advantageous properties. The actual effectiveness of the fiber depends greatly on their dispersion degree in the composites. With the help of ultrasonic wave and a dispersant carboxymethyl cellulose (CMC), the even dispersion of short basalt fibers in water is realized. The fluidity of the basalt fiber cement mortar becomes less as the fiber content increasing. When the fluidity of mortar of BFRC is greater than 170mm, the even dispersion of short basalt fibers in BFRC can be realized. Fly ash can effectively improve the fluidity of BFRC and the density of cement matrix. When the amount of fly ash replaces the cement less than 25% by weight, it can improve both the compressive strength and tensile strength at age of 28 days.

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