mechanical properties and durability of ultra concrete

Mechanical Properties and Durability of Ultra High ...

In this work, the effect of the addition of multi-walled carbon nanotubes (MWCNTs) on the mechanical properties and durability of ultra high strength concrete (UHSC) is reported. First, the MWCNTs were dispersed by a nano sand-mill in the presence of a surfactant in water. The UHSC specimens were pr

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Mechanical Properties and Durability of Ultra High ...

In this work, the effect of the addition of multi-walled carbon nanotubes (MWCNTs) on the mechanical properties and durability of ultra high strength concrete (UHSC) is reported. First, the MWCNTs were dispersed by a nano sand-mill in the presence of a surfactant in water. The UHSC specimens were prepared with various amounts of MWCNTs, ranging from 0% to 0.15% by weight of cement (bwoc).

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Mechanical Properties and Durability of Ultra-High ...

Mechanical Properties and Durability of Ultra-High-Performance Concrete. The purpose of this article was to evaluate the mechanical and durability characteristics of Ultra-high-performance-concrete (UHPC). UHPC is defined as concrete with compressive strength exceeding 150 N/mm2 (21,756 psi).

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Mechanical Properties and Durability of Ultra-High ...

Mar 12, 2012  Abstract: Ultra-high-performance-concrete (UHPC) is defined as concrete with compressive strength exceeding 150 N/mm2 (21,756 psi). UHPC can be fiber reinforced and displays increased mechanical performance and improved durability compared to high-strength concrete. This study presents the influence of curing/exposure conditions and concrete ...

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Mechanical Properties and Durability of Ultra-High ...

Ultra-high performance concrete (UHPC) incorporating coarse aggregate was prepared with common raw materials. Fresh concrete had excellent good workability with slump of 265 mm and slump spread of 673 mm. Compressive strength of UHPC at 56 d reached 150 MPa. However, UHPC exhibited high brittleness in terms of spalling failure which occurred during compression loading.The ratio of splitting ...

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Mechanical Properties and Durability of Ultra High ...

In this work, the effect of the addition of multi-walled carbon nanotubes (MWCNTs) on the mechanical properties and durability of ultra high strength concrete (UHSC) is reported. First, the MWCNTs were dispersed by a nano sand-mill in the presence of a

get price

Mechanical Properties and Durability of Ultra-High ...

Mar 12, 2012  Abstract: Ultra-high-performance-concrete (UHPC) is defined as concrete with compressive strength exceeding 150 N/mm2 (21,756 psi). UHPC can be fiber reinforced and displays increased mechanical performance and improved durability compared to high-strength concrete. This study presents the influence of curing/exposure conditions and concrete ...

get price

Mechanical Properties and Durability of Ultra-High ...

Mechanical Properties and Durability of Ultra-High-Performance Concrete. The purpose of this article was to evaluate the mechanical and durability characteristics of Ultra-high-performance-concrete (UHPC). UHPC is defined as concrete with compressive strength exceeding 150

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Mechanical Properties and Durability of Ultra-High ...

The purpose of this article was to evaluate the mechanical and durability characteristics of Ultra-high-performance-concrete (UHPC). UHPC is defined as concrete with compressive strength exceeding 150 N/mm2 (21,756 psi). UHPC can be fiber reinforced and displays increased mechanical performance and improved durability compared to high-strength concrete.

get price

Mechanical Properties and Durability of Ultra-High ...

In the present study, a viable solution to the abovementioned problems, the Ultra-High-Performance Concrete (UHPC) is investigated due to its better mechanical and durability characteristics. Its low porosity and dense microstructures offer high compressive and flexural tensile strengths.

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Durability and mechanical properties of high strength ...

Mar 01, 2013  Other than the mechanical properties of the concrete, the durability properties of the concrete have to be of high standards in order to sustain a longer life span. The inclusion of mineral admixtures such as Ground Granulated Blast-furnace Slag (GGBS) has been recognised to improve certain concrete properties.

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Ultra-High Performance Concrete FHWA

The mechanical properties of UHPC include compressive strength greater than 21.7 kilopounds per square inch (ksi) (150 Megapascals (MPa)) and sustained postcracking tensile strength greater than 0.72 ksi (5 MPa). Ultra-high performance concrete has a discontinuous pore structure that reduces liquid ingress, significantly enhancing durability ...

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Mechanical Properties of Ultra High Performance Concrete ...

Jan 12, 2010  Mechanical Properties of Ultra High Performance Concrete Produced in the Gaza Strip. The aim of this study is to produce Ultra High Performance Concrete (UHPC) in Gaza strip using materials available at the local markets. Hence, different trial mixes are prepared to achieve a compressive strength in excess of 120 MPa.

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Ultra-high-Performance Concrete: Characteristics, and ...

The mechanical properties of UHPC include compressive strength higher than 150 MPa, and sustained post cracking tensile strength greater than 5 MPa. Ultra-high-performance concrete durability is considerably superior to that of ordinary concrete since its pores are discontinuous, which declines liquid penetration.

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MECHANICAL AND DURABILITY PROPERTIES OF

concrete, it is essential to investigate the fresh, hardened, and durability properties of concrete to promote and escalate its application in the construction industry. This research investigates the fresh, mechanical, and durability properties of 25 MPa recycled aggregate concrete (RAC) made with different RCA replacement levels.

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Mechanical Properties of Ultra High Performance Concrete

A research program is conducted to evaluate the mechanical properties of Ultra High Performance Concrete, target compressive strength at the age of 28 days being more than 150 MPa. The methodology to develop such mix has been explained. The material properties, mix design and curing regime are determined.

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Optimization of Mechanical Properties and Durability of ...

Nov 01, 2006  Title: Optimization of Mechanical Properties and Durability of Reactive Powder Concrete Author(s): Ehab Shaheen and Nigel Shrive Publication: Materials Journal Volume: 103 Issue: 6 Appears on pages(s): 444-451 Keywords: curing; durability; fibers; fracture; hydration; porosity; silica fume Date: 11/1/2006 Abstract: The objective of the mixture design described herein was to achieve a concrete ...

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Mechanical Properties of Ultra High Performance Fiber ...

The fresh and hardened mechanical properties of Ultra High Performance Fiber Reinforced Self Compacting Concrete were studied, such as, workability, self-compacting properties, compressive strength, split cylinder strength, and flexural strength. The effects of using

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Effect of Graphene Oxide on Mechanical Properties and ...

Ultra-high-performance concrete (UHPC) has been used as an advanced construction material in civil engineering because of its excellent mechanical properties and durability. However, with the depletion of the raw material (river sand) used for preparing UHPC, it is imperative to find a replacement material. Recycled sand is an alternative raw material for preparing UHPC, but it degrades the ...

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Mechanical Properties and Durability of Ultra-High ...

Mechanical Properties and Durability of Ultra-High-Performance Concrete. The purpose of this article was to evaluate the mechanical and durability characteristics of Ultra-high-performance-concrete (UHPC). UHPC is defined as concrete with compressive strength exceeding 150

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Mechanical Properties and Durability of Ultra-High ...

The purpose of this article was to evaluate the mechanical and durability characteristics of Ultra-high-performance-concrete (UHPC). UHPC is defined as concrete with compressive strength exceeding 150 N/mm2 (21,756 psi). UHPC can be fiber reinforced and displays increased mechanical performance and improved durability compared to high-strength concrete.

get price

Mechanical Properties of Ultra High Performance Concrete

A research program is conducted to evaluate the mechanical properties of Ultra High Performance Concrete, target compressive strength at the age of 28 days being more than 150 MPa. The methodology to develop such mix has been explained. The material properties, mix design and curing regime are determined.

get price

Mechanical Properties of Ultra High Performance Concrete ...

Jan 12, 2010  Mechanical Properties of Ultra High Performance Concrete Produced in the Gaza Strip. The aim of this study is to produce Ultra High Performance Concrete (UHPC) in Gaza strip using materials available at the local markets. Hence, different trial mixes are prepared to achieve a compressive strength in excess of 120 MPa.

get price

Ultra-High Performance Concrete: Mechanical Performance ...

Jun 28, 2016  Ultra-high performance concrete (UHPC) is a novel construction material exhibiting enhanced mechanical and durability properties, which can lead to economical construction through reducing the cross-sections of structural members with associated materials savings and lower installation and labor costs (Tang 2004).The relatively high initial cost of UHPC has restricted its wider

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Ultra-high-Performance Concrete: Characteristics, and ...

The mechanical properties of UHPC include compressive strength higher than 150 MPa, and sustained post cracking tensile strength greater than 5 MPa. Ultra-high-performance concrete durability is considerably superior to that of ordinary concrete since its pores are discontinuous, which declines liquid penetration.

get price

Mechanical Properties of Ultra High Performance Fiber ...

The fresh and hardened mechanical properties of Ultra High Performance Fiber Reinforced Self Compacting Concrete were studied, such as, workability, self-compacting properties, compressive strength, split cylinder strength, and flexural strength. The effects of using

get price

MECHANICAL AND DURABILITY PROPERTIES OF

concrete, it is essential to investigate the fresh, hardened, and durability properties of concrete to promote and escalate its application in the construction industry. This research investigates the fresh, mechanical, and durability properties of 25 MPa recycled aggregate concrete (RAC) made with different RCA replacement levels.

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Properties of concrete - Wikipedia

Mechanical properties at elevated temperature. Temperatures elevated above 300 °C (572 °F) degrade the mechanical properties of concrete, including compressive strength, fracture strength, tensile strength, and elastic modulus, with respect to deleterious effect on its structural changes.

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Optimization of Mechanical Properties and Durability of ...

Nov 01, 2006  Title: Optimization of Mechanical Properties and Durability of Reactive Powder Concrete Author(s): Ehab Shaheen and Nigel Shrive Publication: Materials Journal Volume: 103 Issue: 6 Appears on pages(s): 444-451 Keywords: curing; durability; fibers; fracture; hydration; porosity; silica fume Date: 11/1/2006 Abstract: The objective of the mixture design described herein was to achieve a concrete ...

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Workability over time and mechanical properties of ultra ...

Sammendrag. Ultra-high performance concrete (UHPC) is characterized by high compressive and tensile strength along with excellent durability due to a densely packed matrix with low porosity. It has a low water-to-binder ratio (w/b) that can be compensated by the supplementation of superplasticizers (SP) to improve its workability.

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Mechanical Properties of Ultra High Performance Concrete ...

A research program is conducted to evaluate the mechanical properties of Ultra High Performance Concrete, target compressive strength at the age of 28 days being more than 150 MPa. The methodology to develop such mix has been explained. The material properties, mix design and curing regime are determined. The material attributes are understood by studying the stress strain behaviour

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Mechanical Properties of Ultra-High Performance Fiber ...

properties in terms of compressive behaviors, tensile behaviors, and durability. this paper investigate the effect of steel fiber (volume fraction and aspect ratio) on the mechanical properties of ultra-high performance concrete such as, Compressive strength, modulus of elasticity, Poisson’s ratio, flexural strength under the name.

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Mechanical Properties of Reactive Power Concrete and Ultra ...

An experimental investigation on the variation of compressive strength, splitting tensile strength and fracture energy, with the ratios of water to binder (W/B) of ultra-high strength concretes, including the reactive power concrete (RPC) and ultra-high strength concrete with coarse aggregate (UHSC), has been carried out. The W/B varied between 0.14 and 0.22 at a constant increment of 0.02.

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