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use of high strength strainhardening cementitious

use of high strength strainhardening cementitious

Use of high strength Strain-Hardening Cementitious ...

Apr 10, 2018  To design high strength SHCC, it is desirable to maintain a low water/binder ratio (w/b ratio) and introduce a proper amount of silica fume. Several mixes investigated in this study are listed in Table 1.In all mixes, 20% of the cement was replaced by silica fume as in , and the w/b ratio was no higher than 0.18.Silica sands with particle size less than 1.4 mm were used as fine aggregates.

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Use of high strength Strain-Hardening Cementitious ...

The present study explores a new repair technique using high strength Strain-Hardening Cementitious Composites (SHCC) in the aforementioned situation. With SHCC compensating for the area loss of rebars, splicing additional reinforcements or removing a large amount of concrete is not necessary. In this paper, the design of high strength SHCC was ...

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Use of high strength Strain-Hardening Cementitious ...

1 3 Use of high strength Strain-Hardening Cementitious Composites for 4 flexural repair of concrete structures with significant steel corrosion 5 6 7 Yixin Chen, Jing Yu ⇑, Christopher K.Y ...

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(PDF) Use of high strength Strain-Hardening Cementitious ...

Use of high strength Strain-Hardening Cementitious Composites for flexural repair of concrete structures with significant steel corrosion April 2018 Construction and Building Materials 167:325-337

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Use of high strength Strain-Hardening Cementitious ...

The present study explores a new repair technique using high strength Strain-Hardening Cementitious Composites (SHCC) in the aforementioned situation. With SHCC compensating for the area loss of rebars, splicing additional reinforcements or removing a large amount of concrete is not necessary. In this paper, the design of high strength SHCC was ...

get price

Use of high strength Strain-Hardening Cementitious ...

1 3 Use of high strength Strain-Hardening Cementitious Composites for 4 flexural repair of concrete structures with significant steel corrosion 5 6 7 Yixin Chen, Jing Yu ⇑, Christopher K.Y ...

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Performance‐enhancement of high‐strength strain‐hardening ...

Feb 12, 2021  Nano-SiO 2 (NS), due to its prominent nucleation and pozzolanic effects, holds the promise to effectively enhance the tensile and compressive properties of high-strength strain-hardening cementitious composite (HS-SHCC) at both early age (1d, 3d) and normal curing age (28d). The influence of nano-SiO 2 (NS) on the hydration, microstructure and mechanical properties of HS

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Tensile behavior of high-strength strain-hardening cement ...

Aug 01, 2017  The high-strength SHCC matrix is similar to that presented in other works; see e.g. .It was initially designed by the authors for an optimal interaction with 12 mm long and 20 μm thick HDPE fibers and was developed based on a PVA-SHCC matrix by increasing considerably the cement content and by reducing the water-to-binder ratio to 0.18. To increase the packing density a part of cement

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Engineered/strain-hardening cementitious composites (ECC ...

Aug 01, 2021  Engineered/Strain-Hardening Cementitious Composites (ECC/SHCC) are fiber-reinforced cement-based materials with tensile strain-hardening and multiple-cracking characteristics. In this study, ultra-high-strength ECC (UHS-ECC) with a compressive strength over 210 MPa was successfully developed for the first time.

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A strain-hardening cementitious composites with the ...

Apr 15, 2017  The ultra-high ductile cementitious composites (UHDCC) has the averaged tensile strain ranging 8% to 12% corresponding to the peak stress. • The compressive strength of UHDCC cubes ranges from 45.9 MPa to 121.5 MP, while the cylinder strength ranges from 20 MPa to 90 MPa.. In some cases, the compressive strain hardening behaviors was observed.

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Strain hardening ultra-high performance concrete (SHUHPC ...

Aug 01, 2017  1. Introduction. Ultra-high performance concrete (UPHC) represents a group of cement-based materials that achieves compressive strength exceeding 150 MPa , .The ultra-high strength of UHPC can effectively reduce the size of structural members and thus lowering the concrete usage, mitigating the environmental impact , and also resulting in greater flexibility in architectural design .

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High Strength Lightweight Strain-Hardening Cementitious ...

High strength lightweight concrete was originally designed for potential structural applications. However, the brittle nature and higher permeability became the main drawbacks for further broad application. In this case, it is imperative to develop a special type of high strength strain hardening lightweight cementitious composite, offering higher ductility, lower permeability and considerable ...

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Shear strengthening of reinforced concrete beams with high ...

Jul 23, 2020  Strain-hardening cementitious composite (SHCC) was widely recognized as a material that possesses great potential in the repair and strengthening of reinforced concrete (RC) structures. SHCC can usually achieve high ductility with multiple cracking behavior and it also has excellent durability. Moreover, high tensile strength can also be achieved with proper mix design. In this study ...

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Engineered cementitious composite - Wikipedia

Engineered Cementitious Composite (ECC), also called Strain Hardening Cement-based Composites (SHCC) or more popularly as bendable concrete, is an easily molded mortar-based composite reinforced with specially selected short random fibers, usually polymer fibers. Unlike regular concrete, ECC has a strain capacity in the range of 3–7%, compared to 0.01% for ordinary portland cement (OPC ...

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MPhil in Civil Engineering - Shear Strengthening of ...

Aug 19, 2021  MPhil in Civil Engineering - Shear Strengthening of Reinforced Concrete Beams with Significant Corroded Stirrups using High Strength Strain-hardening Cementitious Composites (HS-SHCC) 19 August 2021. 10:30am - 1:30pm. Meeting ID: 924 0068 8628, Passcode: 005927, HKUST. Share Email Add to Calendar. Event Format. Thesis Defense.

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(PDF) Use of high strength Strain-Hardening Cementitious ...

Use of high strength Strain-Hardening Cementitious Composites for flexural repair of concrete structures with significant steel corrosion April 2018 Construction and Building Materials 167:325-337

get price

Performance‐enhancement of high‐strength strain‐hardening ...

Feb 12, 2021  Nano-SiO 2 (NS), due to its prominent nucleation and pozzolanic effects, holds the promise to effectively enhance the tensile and compressive properties of high-strength strain-hardening cementitious composite (HS-SHCC) at both early age (1d, 3d) and normal curing age (28d). The influence of nano-SiO 2 (NS) on the hydration, microstructure and mechanical properties of HS

get price

Use of high strength SHCC for the repair of concrete ...

The present study focuses on a new repair methodology based on the use of high strength Strain-Hardening Cementitious Composite (SHCC). With the SHCC providing tensile load carrying capacity to compensate for the steel loss, splicing of additional steel reinforcement is no longer necessary. The amount of concrete removed to provide the bond ...

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High Strength Lightweight Strain-Hardening Cementitious ...

High strength lightweight concrete was originally designed for potential structural applications. However, the brittle nature and higher permeability became the main drawbacks for further broad application. In this case, it is imperative to develop a special type of high strength strain hardening lightweight cementitious composite, offering higher ductility, lower permeability and considerable ...

get price

Strength Improvement of Strain-Hardening Cementitious ...

Sep 09, 2017  Strain-hardening cementitious composites (SHCCs) exhibiting tensile strain-hardening and multiple cracking are attractive for many structural applications. However, the high cement content makes typical SHCCs less ecofriendly than conventional concrete.

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DEVELOPMENT OF HIGH STRENGTH HIGH DUCTILITY

2nd International RILEM Conference on Strain Hardening Cementitious Composites 12-14 December 2011, Rio de Janeiro, Brazil 2 Recently, there have been a few notable investigations on combining high compressive strength and high tensile ductility in one concrete with limited success.

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Shear strengthening of reinforced concrete beams with high ...

Use of high strength Strain-Hardening Cementitious Composites for flexural repair of concrete structures with significant steel corrosion Article Full-text available

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Strength Improvement of Strain-Hardening Cementitious ...

This material is designed based on micromechanical principles [4][5] and is also popularly known as strain-hardening cementitious composites (SHCC) [6] [7] [8] or ultra-high toughness cementitious ...

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High-Strength, Strain-Hardening Cement-Based Composites ...

Apr 07, 2018  This article presents an investigation on the tensile behavior of high-strength, strain-hardening cement-based composites (HS-SHCC) made with four different types of high-performance polymer microfibers. In particular, high-density polyethylene (HDPE), poly(p-phenylene-terephthalamide) (aramid), as-spun poly(p-phenylene-2,6-benzobisoxazole ...

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Use of high strength, high ductility engineered ...

Use of high strength, high ductility engineered cementitious composites (ECC) to enhance the flexural performance of reinforced concrete beams November 2020 Journal of

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STRAIN HARDENING OF REINFORCEMENT IN CONCRETE

Grade 380 Grade 380 was a high strength, low ductility reinforcing steel used in New Zealand until ~1989. It has much poorer properties than later high strength reinforcement types. Non-metric Before metrification of reinforcement occurred in 1973, New Zealand used a variety of reinforcement to British and US Standards. Most common amongst

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Effect of Steel Fibers on Behavior of Ultra High ...

UHPC, Steel Fibers, strain hardening. 1. Introduction . The . use of (UHPC) in structural applications has significantly increased owing to its numerous advantages compared with conventional normal concrete (NC) and high-performance concrete (HPC). UHPC exhibits superior properties in terms of compressive behaviors, tensile behaviors, and ...

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Multifunctional use of SAP in strain-hardening cement ...

This paper describes the material behaviour of a strain hardening cement-based composite (SHCC) at high strain rates. The results of highly dynamic spall experiments using a Hopkinson bar at ...

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Christopher Kin Ying LEUNG 梁堅凝 Department of Civil and ...

Chen, Y., Yu, J. and Leung, C.K.Y. “Use of High Strength Strain-hardening Cementitious Composites for Flexural Repair of Concrete Structures With Significant Steel Corrosion”, Construction and Building Materials, Vol.167, pp.325-337 (2018)

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