نتایج جستجو برای: steel and polypropylene fibers

تعداد نتایج: 16870870  

Journal: :Periodica Polytechnica-civil Engineering 2022

The behavior of concrete structures after being exposed to elevated temperatures is considered one the great vital concerns in Civil Engineering. Moreover, as temperature have adverse effects on mechanical properties members, it’s important find solutions improve these at temperature. This study aims investigate effect supplementary cementitious materials (SCM) high performance (HPC) compressiv...

2017
Luca Fambri Izabela Dabrowska Riccardo Ceccato Alessandro Pegoretti Mohamed Khayet

Hydrophylic fumed silica AR974 was tested as a potential nanofiller for the production of composite isotactic polypropylene filaments/fibers (containing 0.25–2 vol % of nanoparticles) via melt compounding and subsequent hot drawing. The objectives of this study were as follows: (i) to investigate the effects of the composition and the processing conditions on the microstructure and the thermal ...

Journal: :Journal of food protection 2008
Sónia Silva Pilar Teixeira Rosario Oliveira Joana Azeredo

Listeria monocytogenes is an important pathogen responsible for major outbreaks associated with food products. Adhesion to surfaces leads to significant modifications in cell physiology. The aim of this work was to determine the adhesion ability of 10 isolates of L. monocytogenes to eight materials commonly used in kitchens and to evaluate the viability of the adhered cells. The materials assay...

2013
Amit Rana

Fibres are generally used as resistance of cracking and strengthening of concrete. In this project, I am going to carry out test on steel fibre reinforced concrete to check the influence of fibres on flexural strength of concrete. According to various research papers, it has been found that steel fibres give the maximum strength in comparison to glass and polypropylene fibres. Hence, in this pr...

2013
Narendra Reddy Yiqi Yang

Biocomposites developed from wheat gluten using water without any chemicals as plasticizer and jute fibers as reinforcement have much better flexural and tensile properties than similar polypropylene composites reinforced with jute fibers. Wheat gluten is an inexpensive and abundant co-product derived from renewable resources and is biodegradable but non-thermoplastic. Previous attempts at deve...

Journal: :علوم و تکنولوژی پلیمر 0
وحید حدادی علی اکبر یوسفی تقی گنجی مرتضی خسروی

blown bitumen (110/10) was mixed with heavy vacuum slops (h.v.s), 60/70 penetration grade bitumen and recycled isotactic polypropylene (ipp) at different levels. the resulting resins were used to impregnate non-woven poly(ethylene terephthalate) fibers to form composites. the modulus and penetration grade of the resulting bituminous resins were determined. it was found that these bituminous res...

Journal: :E3S web of conferences 2021

Geopolymer is a relatively new substance that has sparked surge of research into nearly every field geopolymers in recent years. It's still on the verge becoming competitive OPC concrete alternative. Mechanical, hardness, and fire resistance properties geopolymer are exceptional. There been no/limited effect fiber integration concrete. In fire-exposed concrete, can help to resist spalling. The ...

2012
Hanh Tran Lucia Saliba Edward Chandratnam Isidro Turingan Wayne Hawthorne

INTRODUCTION Adhesions to mesh/tacks in laparoscopic ventral hernia repair are often cited as reasons not to adopt its evidence-based superiority over conventional open methods. This pilot study assessed the occurrence of adhesions to full-sized Polypropylene and Gore-tex DualMesh Plus meshes and the possibility for adhesion prevention using fibrin sealant. METHODS Two 10-cm to 15-cm pieces ...

2016
Chang-Mou Wu Wen-You Lai Chen-Yu Wang

The effects of surface treatment of flax fibers featuring vinyltrimethoxy silane (VTMO) and maleic anhydride-polypropylene (MAPP) on the mechanical properties of flax/PP composites were investigated. α-polypropylene (α-PP) and β-polypropylene (β-PP) were used as matrices for measuring the mechanical properties of the flax fiber/polypropylene (flax/PP) composites. Flax/PP composites composed of ...

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