High Performance Prestressed Polymer Mortar System in the Application of Concrete Structure Reinforcement

2011 ◽  
Vol 287-290 ◽  
pp. 930-933
Author(s):  
Xue Feng Zhang ◽  
Ye Ma ◽  
Chun Xia Song
Keyword(s):  
Concrete Structure ◽  
High Performance ◽  
Steel Wire ◽  
High Strength ◽  
Construction Process ◽  
Practical Applications ◽  
Good Corrosion Resistance ◽  
High Performance Polymer ◽  
Polymer Mortar ◽  
Organically Combine

High performance polymer mortar and the high strength prestressed steel wire characteristics are researched and analysised in this paper. High performance prestressed polymer mortar system is proposed in the application of concrete structure reinforcement on the basis of those two existing material of china, reinforcement construction process and successful practical applications is also given. This technology organically combine high-performance polymer mortar with prestressed steel with fire resistance, good corrosion resistance, strong anti-aging, anti-cracking, durability and other advantages, so it is worth further study and extension application.

Experimental Investigation of Stresses in Winch Drums Subjected to Multilayer Spooling Loads From Synthetic Fibre Ropes

2019 ◽  
Author(s):  
Reidar André Skarbøvik ◽  
Henry Piehl ◽  
Sverre Torben ◽  
Mette Lokna Nedreberg ◽  
Vilmar Æsøy
Keyword(s):  
Experimental Investigation ◽  
High Performance ◽  
Synthetic Fibre ◽  
Steel Wire ◽  
High Strength ◽  
Wire Rope ◽  
First Results ◽  
Large Water ◽  
Marine Applications ◽  
And Control

Abstract In many marine applications, modern high-performance synthetic fibre ropes have replaced, and are continuing to replace, well-known steel wire rope solutions due to the low weight of the synthetic ropes removing limitations for operations at large water depths. In some cases, replacement of steel wires with synthetic ropes has caused permanent deformations and damage to multilayer winch drums, indicating that synthetic fibre ropes can cause larger pressure on winch drums than steel wire. This paper presents the first results from a novel experimental investigation of a multilayer winch subjected to a selection of braided high-performance synthetic fibre ropes and a reference steel wire rope. The tested ropes, with nominal diameters between 12 and 20mm, are spooled at different tensile loads and with maximum number of layers in the range of 10 to 19. The experiments utilize a test rig with two winch drums, controllable spooling gear and sheaves with load cells to apply and control required load and speed during spooling. Measurements from twelve biaxial strain gauges on the inside of a thick high-strength drum are used to measure stresses in the structure. The results show that the selected fibre ropes induce considerably larger stress in the winch drum than the steel wire rope. This confirms that design of multilayer winch drums with high-performance synthetic fibre ropes requires special considerations and that the guidance for multilayer stress calculations, related to steel wire ropes, in DNV-GL-0378 “Standard for offshore and platform lifting appliances” is not applicable for synthetic fibre rope applications.

Analysis the Flexural Properties of RC Beams Strengthened by High Strength Steel Wire Mesh and Polymer Mortar Using the Finite Element

2013 ◽  
Vol 444-445 ◽  
pp. 1067-1071
Author(s):  
Li Ping Sun ◽  
Zheng Liu ◽  
Yan Zi Liu
Keyword(s):  
High Strength Steel ◽  
Steel Wire ◽  
High Strength ◽  
Wire Mesh ◽  
Flexural Properties ◽  
Rc Beams ◽  
Reinforced Beams ◽  
Practical Engineering ◽  
Polymer Mortar ◽  
Steel Wire Mesh

The high strength steel wire mesh and polymer mortar reinforcement technology has the advantages of high strength, high temperature resistance,corrosion,resistant, etc. In this paper,we analysis the flexural properties of RC beams strengthened by it using ANSYS.To bear the same moment in the same area of the reinforcement steel strand, and then get effect of different span and different reinforcement methods (comparative beam, direct reinforced beams,and secondary load of reinforced beams) on flexural load-carrying capacity and deflection, then compare and analysis,and draws the conclusion which can provide reference for practical engineering.

The Progress and Prospects of the Research on Reinforcing RC Column with High Strength Steel Wire Mesh and High-Performance Mortar

2014 ◽  
Vol 488-489 ◽  
pp. 809-812
Author(s):  
Jia Qi Wang ◽  
Min Duan ◽  
Ping Shi Li
Keyword(s):  
High Performance ◽  
Steel Wire ◽  
High Strength ◽  
Wire Mesh ◽  
Rc Column ◽  
Project Study ◽  
Beam Shear ◽  
Stainless Steel Wire Mesh ◽  
Steel Wire Mesh ◽  
Shear Bending

The high strength stainless steel wire mesh and high-performance mortar reinforcement has been gradually applied in construction, bridge reinforcement project. Study of the reinforcement at home and abroad mainly focus on research of strengthening RC beam shear, bending, and seismic performance. Although the application of RC column has already been carried out, there is also a short of basic technical an applied research for further study. After looking through a large amount of references, this article gives a summary of the present study about reinforcing RC column with the reinforcement, draws some conclusions and predicts the prospect of development.

UHPFRC as Repair Material for Fire-Damaged Reinforced Concrete Structure – A Review

2015 ◽  
Vol 802 ◽  
pp. 283-289 ◽  
Author(s):  
Muhd Afiq Hizami Abdullah ◽  
Mohd Zulham Affandi Mohd Zahid ◽  
Badorul Hisham Abu Bakar ◽  
Fadzli Mohamed Nazri ◽  
Afizah Ayob
Keyword(s):  
Reinforced Concrete ◽  
Concrete Structure ◽  
High Performance ◽  
Steel Fibre ◽  
High Strength ◽  
Fiber Reinforced Concrete ◽  
Repair Material ◽  
Reinforced Concrete Structure ◽  
Normal Concrete ◽  
High Performance Fiber

Exposure of concrete to intense heat will cause deterioration of its strength and durability. Previously, the fire-damaged concrete was repaired using the shotcrete and normal concrete. Recent studies utilize fibre reinforced polymer (FRP) in repairing fire-damaged concrete. Ultra High Performance Fiber Reinforced Concrete (UHPFRC) mostly developed using fine size aggregate, cement, silica fume, super plasticizer and reinforced with steel fibre has an excellent mechanical properties compared to high strength concrete and with an addition of steel fibre in the UHPFRC enhances its ductility behaviour which is not possessed by normal concrete, hence, UHPFRC indicates a promising candidate as repair material to fire-damaged concrete. The aim of this paper is to review on the properties of UHPFRC to be utilized as repair material to fire-damaged concrete structure based on previous research on UHPFRC and fire-damaged structure.

High Performance, Light weight Thermoplastic/Rare Earth Alloy Magnets

1999 ◽  
Vol 577 ◽  
Author(s):  
Jun Xiao ◽  
Joshua U. Otaigbe
Keyword(s):  
Rare Earth ◽  
High Performance ◽  
Mechanical Performance ◽  
High Strength ◽  
Polyphenylene Sulfide ◽  
Exploratory Research ◽  
Rare Earth Alloy ◽  
Crystal Polymer ◽  
High Performance Polymer

ABSTRACTWe report progress on our exploratory research on surface modification of magnetic NdFeB fillers, characterization of suitable magnetic rare earth alloy powders and high-performance polymer matrices, processability, and properties of novel thermoplastic/NdFeB magnets. The results suggest that blending liquid crystal polymer (LCP) with a high-thermoplastic polymer such as polyphenylene sulfide (PPS) provides the required balance of properties. These properties include superior magneto-mechanical performance, minimal melt viscosity at optimal NdFeB volume loading, enhanced thermal stability, high stiffness, high strength, improved dimensional stability, and excellent chemical resistance; making the thermoplastics magnets suitable for use in high temperature and aggressive environments where commercial polymer-bonded magnets are not useable.

scholarly journals Applications of a LITS semi-empirical model in plain and reinforced concrete members subjected to a uniaxial compressive load

2017 ◽  
Vol 10 (2) ◽  
pp. 317-332
Author(s):  
T. E. T. BUTTIGNOL
Keyword(s):  
Reinforced Concrete ◽  
Empirical Model ◽  
High Performance ◽  
Thermal Strain ◽  
Compressive Load ◽  
High Strength ◽  
Reinforced Concrete Column ◽  
Practical Applications ◽  
Concrete Members ◽  
Semi Empirical

Abstract This paper describes a LITS (Load Induced Thermal Strain) semi empirical model and two practical applications in simple and reinforced concrete members. The model allows a preliminary and straightforward quantification of the total strain of concrete structures submitted to heating and a sustained compressive load, without the need to use complex numerical analyses. The model takes into account the effect of the thermal expansion restraint due to the boundary conditions (temperature and compressive load) and can be adopted for several types of concretes (conventional, high strength and ultra high performance). In the first example, the total deformations of simple concrete specimens from KHOURY (2006) are determined. In the second example, the total displacement of a reinforced concrete column from SCHNEIDER et al (1994) is calculated. A comparison between the results of the model and the experimental values demonstrated the reliability of the semi-empirical model to obtain a preliminary quantification of the total deformations of concrete.

Studies on RC Beams Strength with Steel Wires Using Nolinear Finite Element Method

2013 ◽  
Vol 690-693 ◽  
pp. 895-899
Author(s):  
Cao Song ◽  
Jing Ya Zhou ◽  
Hong Mei Zhang
Keyword(s):  
Finite Element ◽  
Failure Mode ◽  
Steel Wire ◽  
High Strength ◽  
Wire Mesh ◽  
Finite Element Software ◽  
Reinforced Beams ◽  
Before And After ◽  
Polymer Mortar ◽  
Steel Wire Mesh

High strength stainless steel wire mesh-polymer mortar reinforcement method was a kind of advanced reinforcement technique.The present study attempted to do a model analysis on the test of the high strength steel wire mesh-polymer mortar reinforcement of less stress beams by using finite element software ANSYS. The study was conducted through the analysis of the three factors of the tested bending reinforcement beam’s deflection, deformation and stress and comparison of the changes of the beam’s ultimate load and failure mode before and after reinforcement.The results of ANSYS analysis and the test showed that the failure mode shifts from less reinforcement damaged into reinforcement destruction;the crack loading value of the reinforced beams increased indicating that the beam bottom reinforcement layer had a significant effect on the increase of the beam’s crack loading. Increased significantly compared to non-reinforced ultimate bearing capacity of reinforced beams. the ANSYS finite element simulation agrees well with the experimental value.

ALCHEMI of B2-Ordered Fe50Al45Me5 alloys

1996 ◽  
Vol 54 ◽  
pp. 548-549
Author(s):  
Ian M. Anderson
Keyword(s):  
Room Temperature ◽  
Iron Aluminide ◽  
Low Density ◽  
Intermetallic Alloys ◽  
Practical Applications ◽  
Alloying Additions ◽  
Site Distribution ◽  
Good Corrosion Resistance ◽  
Room Temperature Ductility ◽  
The Matrix

B2-ordered iron aluminide intermetallic alloys exhibit a combination of attractive properties such as low density and good corrosion resistance. However, the practical applications of these alloys are limited by their poor fracture toughness and low room temperature ductility. One current strategy for overcoming these undesirable properties is to attempt to modify the basic chemistry of the materials with alloying additions. These changes in the chemistry of the material cannot be fully understood without a knowledge of the site-distribution of the alloying elements. In this paper, the site-distributions of a series of 3d-transition metal alloying additions in B2-ordered iron aluminides are studied with ALCHEMI.A series of seven alloys of stoichiometry Fe50AL45Me5, with Me = {Ti, V, Cr, Mn, Co, Ni, Cu}, were prepared with identical heating cycles. Microalloying additions of 0.2% B and 0.1% Zr were also incorporated to strengthen the grain boundaries, but these alloying additions have little influence on the matrix chemistry and are incidental to this study.

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