structural performance of drycast concrete nanocomposite

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Structural performance of dry-cast concrete nanocomposite ...

10%  Oct 15, 2013  Benefits of relatively low-cost graphite nanoplatelets, used alone or in combination with (micro-scale) polyvinyl alcohol (PVA) fibers, towards enhancement of the structural performance of concrete pipes were evaluated through industrial-scale production and experimental evaluation of concrete pipes. A total of ten pipes were manufactured via the dry-cast method using a zero-slump concrete

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Structural performance of dry-cast concrete nanocomposite ...

Structural performance of dry-cast concrete nanocomposite pipes ... nanoplatelets were used alone or in combination with PVA fibers of micro-scale diameter to enhance the structural performance of dry-cast concrete pipes. ... Fig. 1313SEM image of dispersed graphite nanoplatelets in drycast concrete and pipe structural performance could be ...

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Structural performance of dry-cast concrete nanocomposite ...

Structural performance of dry-cast concrete nanocomposite pipes. October 2013; ... fibers, towards enhancement of the structural performance of concrete pipes were evaluated through industrial ...

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(PDF) Performance Evaluation of Precast Concrete Beams ...

Performance Evaluation of Precast Concrete Beams Reinforced with Multifunctional Graphite Nanomaterials ... Concrete Nanocomposite.” ... fibers, towards enhancement of the structural performance ...

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Performance evaluation of precast concrete beams ...

They were subjected to structural testing four months after production. Concrete specimens were also prepared during casting of the beams for performance of mechanical and durability tests in the laboratory. A pan mixer was used in the precast concrete plant for preparing the concrete nanocomposite

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Performance evaluation of precast concrete beams ...

Experimental results indicated that graphite nanomaterials improved the structural performance of reinforced concrete beams and yielded more distributed and finer flexural crack patterns. Graphite nanoplatelets were found to enhance bonding of reinforced steel to concrete and also to improve the mechanical properties of concrete.

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Structurally Composite, Thermally Efficient Precast Concrete

PRECAST CONCRETE ELEMENTS The shear connections that join the inner and outer wythes through the foam core play a big role in both the thermal and structural behavior of a panel. Traditionally, connections that provide good structural performance have reduced thermal per-formance. For example, connecting the inner wythe to the outer wythe with ...

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Balanced improvement of high performance concrete material ...

Durability and structural tests indicated that the use of graphite nanoplatelets, alone or in combination with synthetic (PVA) fibers, produced significant gains in the durability characteristics, and also benefited the structural performance of precast reinforced concrete products.

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UG Super concrete - Nanocomposite Material

UG Super Concrete - Nanocomposite Material: Super concrete - nanocomposite material achieved strengths above >150 MPa at 28 days under normal conditions or above 180 MPa , effect on the workability of fresh concrete and the evolution of compressive strength enabled the achievement of strengths above 150 to 180MPa after heat treatment for concrete.

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Amirpasha Peyvandi Michigan State University - Academia

Structural performance of dry-cast concrete nanocomposite pipes more. by Amirpasha Peyvandi. Publication Date: 2013 Publication Name: ... Enhancement of the durability characteristics of concrete nanocomposite pipes with modified graphite nanoplatelets more. by

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Structural performance and section optimization of precast ...

Mar 04, 2021  A precast concrete sandwich panel (PCSP) offers a good potential in the application of façade wall due to the improved energy efficiency. In this study, the structural performance of PCSP with pin-type glass fiber reinforced polymer (GFRP) connectors was investigated, and an optimization characterized by ribbed structural wythe was proposed and studied.

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Structural Performance of Precast Foamed Concrete Sandwich ...

Apr 01, 2018  In this paper, experimental and simple analytical studies on the structural behavior of Precast Foamed Concrete Sandwich Panel (PFCSP) were reported. Full-scale tests on six PFCSP panels varying in thickness were performed under axial load applications. Axial load-bearing capacity, load-deflection profiles, load-strain relationships, slenderness ratio, load-displacement, load

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‪Amirpasha Peyvandi‬ - ‪Google Scholar‬

Enhancement of the Durability Characteristics of Concrete Nanocomposite Pipes with Modified Graphite Nanoplatelets. A Peyvandi, P Soroushian, A Balachandra, K Sobolev ... Structural Performance of Dry-Cast Concrete Nanocomposite Pipes. A Peyvandi, P Soroushian. Materials and Structures 48 (1-2), 461-470, 2015. 17:

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Structural shear performance of insulated precast concrete ...

Jul 15, 2020  Twenty five precast concrete sandwich panel were cast by industry partners, Techrete , using Fixinox flat plate shear connectors, and were tested in the Structural Engineering Laboratories at Trinity College Dublin. The standard configuration of a specimen sample is shown in Fig. 1.Each panel contained two plate anchors, to minimize lateral rotation.

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(PDF) Recycled Glass Concrete - ResearchGate

Structural performance of dry-cast concrete nanocomposite pipes. Article. Full-text available ... fibers, towards enhancement of the structural performance of concrete

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03 45 00 Precast Architectural Concrete (07292013)

B. Architectural Precast Concrete shall include the following unit types: 1. Plain smooth faced concrete units. 2. Exposed aggregate units (integral, not surface applied aggregate). 3. Special formed and textured units. C. Precast prestressed structural concrete units

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Enhancement of the structural efficiency and performance ...

Abstract Fiber reinforcement systems are used towards development of pipes with more efficient structural designs, reduced steel reinforcement, increased cover thickness over reinforcement (and thus durability), reduced weight, streamlined geometry (for ease of handling and installation), and enhanced shear resistance. Comprehensive experimental investigations were undertaken to evaluate the ...

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STRUCTURE magazine Lady Liberty Gets a Precast Concrete ...

The mix design for the structural wythe was a 28-day, 7,000-psi mix. The mix design for the face mix was a 28-day, 5,000-psi mix. Both mixes used a corrosion inhibitor. The architect worked extensively with High Concrete Group, which manufactured the precast concrete, to test different formulations to achieve the right color and texture.

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Structural Engineering Publications Structural ...

Investigation of ultra high performance concrete piles for integral abutment bridges, Kam W. Ng, Jessica Garder, and Sri Sritharan PDF Seismic response of precast, posttensioned concrete jointed wall systems designed for low- to midrise buildings using the direct displacement-based approach , M. Ataur Rahman and Sri Sritharan

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Enhancement of the durability characteristics of concrete ...

Graphite nanoplatelets at low dosages (0.05 vol.% of press. concrete) were found to significantly improve the moisture trans- [5] Beliea ND, Monteny J, Beeldens A, Vincke E, Gemert DV, Verstraete W. port performance and acid resistance of concrete without or with Experimental research and prediction of the effect of chemical and biogenic ...

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CICE2010

Structural Performance Evaluation of Precast FRP-Concrete Composite Deck with Concrete Wedge for Cable-Stayed Bridge: 7. Static and Fatigue Behaviors of Precast FRP-Concrete Composite Deck for Cable-Stayed Bridge: 8. Experimental Studies on FRP-Concrete Composite Deck with FRP Perfobond Shear Connectors: 9.

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STRUCTURAL T PERFORMANCE

Precast concrete designed in accordance with ASCE 7-16 Section 14.2.4 and ACI 318 EDO1, b 0.7 0.7 BDO2, b 1.0 1.0 RDO3, b 1.4 1.4 Wood sheathed designed in accordance with ASCE 7-16 Section 14.5 and AFPA (now AWC) Special Design Provisions for Wind and Seismic - 3.0 NA 1 EDO is precast concrete diaphragm Elastic Design Option.

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STRUCTURAL PERFORMANCE OF A FULL-DEPTH PRECAST

concrete bridge deck overhangs, accelerating the construction of concrete bridge decks, by using full-depth precast prestressed concrete deck panels. Full-depth precast overhang panels in combination with cast-in-place (CIP) reinforced concrete are experimentally and analytically investigated to assess the structural performance. Experimental load-

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Design and performance of precast concrete structures

A precast concrete structural system offers many advantages over in-situ casting. For example, greater control over the quality of materials and workmanship, improved health and safety (with casting carried out at ground level rather than at height) and cost efficiency (with standard forms continually re-used) are all realised through the off-site production of structural elements. As a result ...

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Enhancement of the durability characteristics of concrete ...

Oct 01, 2013  After concrete placement and consolidation under pressure, concrete pipes were subjected to steam curing at 60 °C over 10 h, and were then cured at ambient conditions. Pipes were subjected to structural tests (Three-Edge-Bearing test) 28 days after production . Samples were then cored from the less stressed (and uncracked) regions of pipes for ...

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A comprehensive study on no-slump concrete: From ...

Two main applications of zero-slump concrete are precast concrete and roller ... dry-cast concrete nanocomposite pipes. ... to evaluate the structural performance of pipes with nano- and/or micro ...

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Investigation of Flexural Toughness for Steel-and ...

Jun 01, 2019  Structural performance of dry-cast concrete nanocomposite pipes Mater Struct , 48 ( 1–2 ) ( 2015 ) , pp. 461 - 470 CrossRef View Record in Scopus Google Scholar

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Enhancement of Ultrahigh Performance Concrete Material ...

Ultrahigh performance concrete (UHPC) realized distinctly high mechanical, impermeability, and durability characteristics by reducing the size and content of capillary pore, refining the microstructure of cement hydrates, and effectively using fiber reinforcement. The dense and fine microstructure of UHPC favor its potential to effectively disperse and interact with nanomaterials, which could ...

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(PDF) PRECAST CONCRETE STRUCTURES Abdullah Osman ...

Structural Engineering Geospatial Consultants PRECAST CONCRETE STRUCTURES 1. INTRODUCTION The concept of precast (also known as “prefabricated”) construction includes those buildings, where the majority of structural components are standardized and produced in plants in a location away from the building, and then transported to the site for assembly.

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A comprehensive study on no-slump concrete: From ...

Abstract No-slump concrete has two major applications including roller compacted concrete and prefabricated concrete. The durability concerns of the later one; in particular the deterioration of sewer concrete pipes in natural acidic environment, are the authors’ motivation to study the durability properties of no-slump concrete. To this aim, a comprehensive experimental investigation was ...

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CICE2010

Structural Performance Evaluation of Precast FRP-Concrete Composite Deck with Concrete Wedge for Cable-Stayed Bridge: 7. Static and Fatigue Behaviors of Precast FRP-Concrete Composite Deck for Cable-Stayed Bridge: 8. Experimental Studies on FRP-Concrete Composite Deck with FRP Perfobond Shear Connectors: 9.

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Publications Structural and Construction Engineering

The precast concrete element should be heavily reinforced to fulfill all the demands. Using under-reinforced concrete elements would lead to the formation of wide cracks and cracks permanently open. Keywords: Imperfection , numerical simulation , pavement , precast concrete element , reinforcement design , stress analysis.

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High Performance Concrete Chapter 17 Civil Engineering

May 24, 2021  Download File PDF High Performance Concrete Chapter 17 Civil ... TechnologyConcrete TechnologyHandbook of Nanoceramic and Nanocomposite Coatings and MaterialsHigh-Strength ConcretePharmaceutical Care in Digital RevolutionHigh Performance Concrete ... Repairing Concrete, Formwork, Precast Concrete, Concrete Roads, and Industrial Floors. ...

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Structural Design Methodologies for Concrete Pipes with ...

Improved structural designs were developed and experimentally verified for concrete pipes. These designs make effective use of discrete synthetic fiber reinforcement to lower the reinforcing steel ratio, and thus allow for increasing the protective cover of concrete on steel for improved durability. The new concrete pipe design also enhances the toughness and damage resistance of pipes.

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Benefits of Precast - Wells Concrete

Precast concrete provides excellent versatility in aesthetics, structural design, and use. Precast concrete provides a number of architectural benefits. It comes in almost any color, form and texture, and can also be veneered or embedded with natural materials. It can also be utilized as the primary structural system saving material, time, and ...

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