Effects of Variable Humidity on the Creep Behavior of

In the past decade, creep behavior of concrete under constant humidity has been ... Three types of exposure conditions were established in the laboratory to ... S. K. Park, “Long-term behavior of fiber-reinforced-polymer-plated concrete beams ...

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BEHAVIOR OF STEEL FIBER REINFORCED CONCRETE SLAB DUE TO

1 Steel fiber type Undulated 11 2 Steel fiber types flat 11 3 Steel fiber type Hooked 12 4 (a) Size of steel fiber 13 4 (b) Type of steel fibers used in this research 13 5 Construction SFRC slab in Giant Hypermarket 14 6 The Stress strain behavior of steel fiber for normal concrete strength containing 50 mm hooked end. 17 7

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Relaxation, Creep, and Fatigue Behavior of Carbon Fiber

Fiber reinforced plastics (FRPs) are a promising alternati. ... Title: Relaxation, Creep, and Fatigue Behavior of Carbon Fiber Reinforced Plastic Tendons ... Different types of FRP tendons have been developed to potentially replace steel ... to examine the effect of repeated loading on the elastic modulus, Poisson's ratio, and ...

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Experimental Investigation on Creep Behavior of Fibre

Experimental Investigation on Creep Behavior of Fibre Reinforced High Strength Concrete ... creep, also known as the Pickett effect is the additional creep strain in excess changes in its environment. The ... is a type of fiber reinforced concrete. Glass fiber

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The Effect of Elevated Temperature on Concrete Materials and

Effect of elevated temperature on stress-strain behavior of a quartz concrete. ... Compressive strength of concretes with limestone and other aggregate types . ... Influence of load level and temperature on the creep of normal concrete . ... fibers (stainless steel, fiberglass, tungsten, niobium, molybdenum) can be added to ...

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for HYBRID FRP-CONCRETE COLUMN Contract No. BD224 - FDOT

Investigating the behavior of CFFT beam-columns, with different levels of fiber ... Effect of confinement on creep of concrete core is not as significant as the effect of ... the under-reinforced specimens with thin FRP tubes and off-axis fibers.

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Steel Fiber Reinforced Concrete FAQ - Bekaert.com

How will steel fibers affect my concrete mix design? ... a material with well known engineering properties; e modulus, Poisson's ratio, tensile strength and creep.

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Creep behaviour of cracked steel and macro-synthetic fibre

Oct 12, 2015 · Abstract. The study of creep behaviour of fibre concrete in cracked conditions is nowadays one of the main subjects of interest; many research groups in the world are working on this matter and the development of test methods and the definition of parameters for its characterization becomes an urgent necessity.

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Flexural Creep Behavior of Steel and Polypropylene Fiber

Jul 27, 2020 · While the mechanism responsible for the time-dependent crack opening of steel fibre reinforced concrete has been associated with the fibre pull-out, a combination of pull-out creep and fibre creep...

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Effect of Fibers on High-Temperature Mechanical Behavior and

This study was aimed to investigate the effect of steel, polypropylene (PP), and hybrid (steel + PP) fibers on high-temperature mechanical properties of reactive powder concrete (RPC). The mechanical properties considered are cubic compressive strength, axial or prismatic compressive strength, split-tensile strength, flexural strength, elastic modulus, peak strain, and stress-strain behavior ...

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Fibre Reinforced Concrete

17. Types of Fibers Types Tensile Strength Young's Modulus Ultimate Elongation Specific Gravity ( Mpa ) ( 103 Mpa ) ( % ) Steel 275 - 2758 200 0.5 for fibrous concrete is generally 5 to 10 times that of plain concrete depending on the volume of fiber. 20. Structural behaviour of FRC  Flexure The...

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Creep in Concrete, Factors affecting Creep & Effects of

Concrete creep is defined as: deformation of structure under sustained load. Basically, long term pressure or stress on concrete can make it change shape. This deformation usually occurs in the direction the force is being applied. Like a concrete column getting more compressed, or a beam bending. Creep does not necessarily cause concrete to fail or break apart.

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Factors Influencing Creep of Cracked Fibre Reinforced Concrete

FRC-Creep 2016, Proceedings of International RILEM Workshop on Creep Behaviour in Cracked Sections of Fibre Reinforced Concrete, Valencia, Spain Buratti, N., Mazzotti, C.: Effects of different types and dosages of fibres on the long term behaviour of fibre-reinforced self-compacting concrete.

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Creep and shrinkage of concrete - Wikipedia

Creep and shrinkage of concrete are two physical properties of concrete.The creep of concrete, which originates from the calcium silicate hydrates (C-S-H) in the hardened Portland cement paste (which is the binder of mineral aggregates), is fundamentally different from the creep of metals and polymers.

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Creep-Effect on Mechanical Behavior of Concrete Confined by FRP

15 Oct 2009 ... Despite many successes in concrete creep studies, its effect on the ... concrete cylindrical columns confined by fiber-reinforced polymer ... The elastic modulus of the two types of concrete was 37.1 and 37.9 GPa, respectively.

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PDF Tensile Creep Behavior of Concrete Subject to Constant Restraint at

However, the viscoelastic behavior of concrete under tension might be different from that under The results show that parameter q6 is sensitive to cementi-tious material types, and concrete containing 30 "Tensile stress-strain behavior of concrete under various rates of loading and the role of creep on the behavior." "Effect of fiber addition on the autogenous shrinkage of silica fume concrete."

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A Comparative Experimental Study on the Flexural Behavior of

The effects of the type of concrete, compressive strength of the concrete, and tensile rebar ratio on the flexural behavior of the High-strength fiber-reinforced concrete (HSFRC) is an advanced cement composite material reinforced with steel fiber and has a limited porosity for a concrete matrix.

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A review on effect of different fiber types on fiber reinforced

2018. 6. 8. — Keywords: Concrete, Fiber Reinforced, Concrete behavior, Flexural ... and properties of concrete after addition of fiber and the effect of type, shape and ... Creep, Shrinkage and Cracking of Restrained Concrete at Early Age ...

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Effect of fiber types on creep behavior of concrete - X-mol

2015. 12. 28. — X-MOL提供的期刊论文更新,Construction and Building Materials——Effect of fiber types on creep behavior of concrete,Qingxin Zhao, ...

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multi-scale investigation of tensile creep of ultra- high performance

2.1 Shear Behavior of Beams Made of Fiber-Reinforced Concrete. 5 ... Figure 2.28: Effect of fiber reinforcement and w/cm on creep [Altoubat and Lange, ... Figure 5.30: Voids around fibers due to lack of compaction in a non-thermally treated.

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Creep and shrinkage behavior of ultra high-performance concrete

A complete creep behavior study for concrete specimens. Interim recommendations for Ultra High Performance Fibre-Reinforced Concretes (UHPFRC) were released in 2002 by the Association Française de Génie Civil (AFGC)/Service d'études techniques des routes et autoroutes (SETRA)...

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Creep behaviour of high performance fiber reinforced concrete

Two kinds of fiber-reinforced high performance concrete mixes using those additives and a cocktail of polyvinyl alcohol (PVA) fibers have been developed and ...

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Effect of fiber types on creep behavior of concrete | Semantic

Abstract In this paper, the effect of fiber types such as steel fiber, polyvinyl alcohol (PVA) fiber, polypropylene (PP) fiber and basalt fiber, on the creep of concrete ...

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Effects of Aggregate Types on the Stress-Strain Behavior of

However, according to this study, the dilation behavior of FRP-confined lightweight concrete is also highly related to the fine aggregate properties. Moreover, the different fine aggregates types could further affect the ultimate condition of FRP-confined lightweight concrete, the discussion is given in the following sections.

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Creep and Strength Retention of Aramid Fibers

from that relating to creep, so it is impossible to dis-entangle the two effects from this earlier testing. It is expensive and time-consuming to determine retained strength. A series of tests have to be carried out subjecting the fiber to a creep load, and after a pre-determined time it has to be tested for failure.

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Effect of fiber shape on mechanical behavior of steel fiber

diameters. This paper introduces experimental study relevant to impact of fiber shape on mechanical behavior of steel fiber in fiber reinforced concrete FRC using three femouse steel fiber types and different cases of embedded length into concrete matrix.

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Effets of Steel Fiber Contents on Flexural Creep Behavior of

Test results showed that steel fiber content has a significant effect on the flexural creep behavior of high-strength concrete and long-term flexural load with 40% ...

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Fiber-reinforced concrete - Advantages, types and applications

The major factors affecting the characteristic of fiber-reinforced concrete are a water-cement ratio, percentage of fibers, diameter and length of fibers. Given below are different types of fiber-reinforced concrete used in construction. Steel Fiber Reinforced Concrete. Steel fiber is a metal reinforcement.

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CREEP AND SHRINKAGE PERFORMANCE OF ... - Eprint UTM

of Concrete. 177. 4.5.1.2 Effect of Kenaf Fibre on the Vebe of Concrete 179 xii ... fibre[129]. 28. 2.8. Mechanical properties of several types of bio fibres. [136]. 31.

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Experimental and Analytical Analysis of Creep of Steel Fibre

coefficient is 11.1% in the case of the SFRC type C30/37 FL. 1.5/1.5, while in the case of C30/37 ... effects on creep properties of concrete [8]. Mangat and Azari ...

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Experimental Investigation on the Creep Property of Carbon

2018. 11. 14. — The previous research on the creep behavior of CFRP tendons can be ... This is because higher stress leads to straighter fibers and larger viscous ... El-Hacha R. Prestressing Concrete Structures with FRP Tendons (ACI ...

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Postcrack creep of polymeric fiber-reinforced concrete in flexure

2000. 2. 1. — Results of an experimental investigation of the creep-time behavior of polypropylene and nylon fiber-reinforced concrete (FRC) are presented. ... Resource Type: Journal Article ... The effect of CFRP laminates, bonded to the soffit of precracked reinforced concrete rectangular and tee beams, is investigated ...

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Concrete - Sika Fiber Technology

FIBER REINFORCED CONCRETE IS concrete to which fibers have been added ... production to improve its cracking and fracturing behavior. ... significant effect until during the hardening process they ... creep of the concrete but do not coun-.

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Creep Behavior Of High Performance Fiber Reinforced Concrete

Creep Bahaviour for high performance fibre reinforced concrete. Concrete Grade on Creep. Early Age Thermal Creep Effect. Jirasek Proceedings. Scientists and concrete technologists have been working on the development of new types of concrete. The final creep coefficient is a useful measure of the creeping capacity of concrete and increases with time at an ever-decreasing rate.

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Creep Rupture Performance of Basalt Fiber-Reinforced Polymer

This did not have any effect on the test results ... The results of the creep rupture tests are ... of the creep rupture properties of BFRP bars. Different classes of structures have ...

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A New Look at Tensile Creep of Fiber-Reinforced Concrete

Keywords: basic creep; curing; drying creep; early age behavior; fiber reinforcement; ... The effects of steel fibers on basic creep, stress induced shrinkage, and ...

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Experimental investigation of creep and shrinkage of

and humidity, the type of cement, concrete mix, and cross- sectional ... Predictions about shrinkage and creep of concrete are very important for evaluating time-dependent effects on ... behaviour of an ultra lightweight cement composite. (ULCC) up to ... polypropylene fibers on shrinkage and cracking of concretes”,. Mater.

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Creep - Concrete Technology Questions and Answers - Sanfoundry

Answer: c Explanation: If creep effect is considered at a given load, the modulus determined is referred to as long term modulus of elasticity. Answer: b Explanation: Aggregate has therefore a direct effect on the long-term deformations of concrete because a high elastic modulus aggregate will produce a...

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Creep and Shrinkage of Self-Compacting Concrete with and

Creep and Shrinkage of Self-Compacting Concrete with and without Fibers Farhad Aslani, Shami Nejadi Journal of Advanced Concrete Technology,volume ( ), pp.11 2013 251-265 Recent Progress in Research on and Code Evaluation of Concrete Creep and Shrinkage in Japan

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Recommendations for Design and Construction of High

The name “High Performance Fiber Reinforced Cement Composites” comes from the excellent ... II-8 Tensile performance and size effect of HPFRCC. 62. II-9 Examination examples of tensile creep characteristics of HPFRCC. 69. III-1 Fatigue ... Design and prediction of materials behavior are possible on the basis of ...

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