specializing in the production of large, medium and small concrete mixers, concrete mixing stations, stabilized soil mixing stations and other equipment. It is a heavy industry enterprise integrating R & production and sales.
7.6.1 Engineered cementitious composites (ECC) One way to minimize crack widths in concrete is through the use of engineered cementitious composites (ECC) as developed by Li (2003, 2005) and by Li and Stang (2004). ECC is a fibre reinforced cementitious composite, containing typically about 2% fibres by volume.
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Sep 04, 2009 The engineered cementitious composites are an improved category of concrete that consists of composites and is highly crack resistant. It has a high toughness characteristic due to which it can resist fractures, and after the creation of a crack, unlike normal concrete, it hardens.
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On Engineered Cementitious Composites (ECC) A Review of the Material and Its Applications Victor C. Li1 Received 25 April 2003, revised 14 August 2003 Abstract This article surveys the research and development of Engineered Cementitious Composites (ECC) over the
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Jan 01, 2010 Engineered cementitious composites (ECCs), a special type of HPFRCC, represent a new concrete material that offers significant potential to reduce the durability problem of concrete structures. Unlike ordinary concrete and fiber-reinforced concrete materials, ECC strain-hardens after first cracking, as do ductile metals, and it demonstrates a ...
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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) paste, mortar or concrete. ECC therefore acts more like a ductile metal material rather than a brittle glassmateri
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高达12%返现 May 01, 2019 Abstract. The development of Engineered Cementitious Composites (ECC) would not be complete without real world applications of the material. Field applications serve many purposes. First, it provides the opportunity to translate basic material properties, high tensile strain ductility of ECC in particular, to enhanced structural performance.
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Jan 30, 2019 ECC (Engineered Cementitious Composites) has the advantages of high toughness, spalling resistance, smaller micro cracks width and high impermeability. ECC has broad application prospects such as dam repair, pavement slab patch and reinforcement of earthquake damage components , , , , , , , , .
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Keywords: polyethylene fibers, engineered cementitious composites, nanofibrilliated celluloses, rheology, ultra-high ductility, fracture toughness. Citation: Liang L, Yang J, Lv G, Lei Z, Li X and Liu Q (2021) Surface-Functionalized Nanocelluloses as Viscosity-Modifying Agents in Engineered Cementitious Composites. Front.
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of composite tensile properties important for structural safety at ultimate limit state. 1. Introduction Engineered Cementitious Composites (ECC) represents a special kind of high performance fiber-reinforced ce-mentitious composites featuring high tensile ductility. Unlike concrete and conventional fiber-reinforced con-
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Engineered Cementitious Composites (ECC) – Material, Structural, and Durability Performance ... a brittle fracture that lim its the capacity of the steel/concrete beam. T he single fracture in .
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strength and fracture energy characteristics of Engineered Cementitious Composites (ECCs) made with Class-F fly ash. ECC is a concrete with high ductility that exhibits strain-hardening and ...
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Jan 01, 2010 Engineered cementitious composites (ECCs), a special type of HPFRCC, represent a new concrete material that offers significant potential to reduce the durability problem of concrete structures. Unlike ordinary concrete and fiber-reinforced concrete materials, ECC strain-hardens after first cracking, as do ductile metals, and it demonstrates a ...
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Introduction. Engineered cementitious composites (ECCs) are a novel structural material with high resistance to crack and damage and were originally proposed by Li and Leung (Li and Leung, 1992).With the addition of fibers, the tensile strain–hardening characteristic of more than 2% ultimate tensile strain can be obtained, which is approximately 200 times that for ordinary concrete.
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While unbonded concrete and hot mixture asphalt overlays have been commonly used for concrete pave-ment rehabilitation, cracking due to stress concentration still limits the service life of pavement overlays. The use of ductile concrete such as Engineered Cementitious Composite (ECC) should suppress this brittle fracture at the base of the ...
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Nov 22, 2016 Proceeding of the 2nd Makassar • Li V.C., Kanda T., Engineered cementitious composites for structural application, ASCE J. Materials in Civil Engineering • Engineered Cementitious Composites (ECC) – Material, Structural, and Durability Performance Victor C. Li University of Michigan, Ann Arbor, MI 48109 • Engineered Cementitious ...
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Apr 26, 2021 1.Introduction. To address the intrinsic cracking and fracture induced performance degradation of concrete structures and improve the resilience, durability, and sustainability of the infrastructure, the engineered cementitious composites (ECC) promise to be quite damage tolerant and suppress the commonly occurred degradation of concrete infrastructures, for instance, the
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May 01, 2019 Abstract. The development of Engineered Cementitious Composites (ECC) would not be complete without real world applications of the material. Field applications serve many purposes. First, it provides the opportunity to translate basic material properties, high tensile strain ductility of ECC in particular, to enhanced structural performance.
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International Association of Fracture Mechanics for Concrete and Concrete Structures (IA-FraMCoS), and the German Structural Concrete Committee ... Impedance of an Engineered Cementitious Composite.....292 Danah Saraireh, Steve Walls, Benny Suryanto, Gerard Starrs, ... Strengthening and Repair with Carbon Concrete Composites – the First ...
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provides updated knowledge on various cement-based composites, including self-consolidation concrete, ultra-high-strength concrete, and extruded and engineered cementitious composites. Chapter 7 focuses the fracture behavior of concrete and provides the basic knowledge of frac-ture mechanics of concrete.
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Nov 01, 2008 A new strain hardening composite, ultra high performance strain hardening cementitious composite (UHP-SHCC), with a dense matrix was developed and tested by Kunieda et al. .This material combines excellent protective performance, similar to that of ultra high performance fiber reinforced concrete (UHPFRC), with a significantly higher tensile strain hardening (up to 2%) at peak
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The current research addresses Engineered Cementitious Composites (ECC) as a new alternative for retrofitting damaged concrete beams. Twenty-one plain concrete beams with pre-defined artificial cracks were prepared and repaired using different combinations of ECC alone or together with Carbon Fiber Reinforced Polymers (CFRP).
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Abstract This article presents the novel use of a super ductile fiber reinforced cementitious composite for repair and retrofit of concrete structures. Research in repair and retrofit demands immediate attention because of rapidly deteriorating and heightened safety requirements of civil infrastructures worldwide. The strain-hardening Engineered Cementitious Composites have been developed with ...
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Books. Co-Editor (with C. Leung, K. William and S. Billington), Fracture Mechanics of Concrete Structures, published by IA-FRAMCOS, 2004. Co-Editor (with A. Brandt and I. Marshall), Brittle Matrix Composites 7, published by Woodhead Publishing, 2003. Co-Editor (with A. Brandt and I. Marshall), Brittle Matrix Composites 6, published by Woodhead Publishing, 2000.
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The aim of this paper is to present preliminary results regarding Engineered Cementitious Composites (ECC) and their behavior when experimentally assessing their fracture energy, by measuring the flexural tensile strength (limit of proportionality, residual). As a characteristic of a ductile material, fracture energy is an important parameter when assessing ECC post-cracking residual stresses.
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of concrete structures. Research in repair and retrofit demands immediate attention because of rapidly deteriorating and heightened safety requirements of civil infrastructures worldwide. The strain-hardening Engineered Cementitious Composites have been developed with the aid of fracture mechanics and micromechanics. It is emphasized that
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While unbonded concrete and hot mixture asphalt overlays have been commonly used for concrete pave-ment rehabilitation, cracking due to stress concentration still limits the service life of pavement overlays. The use of ductile concrete such as Engineered Cementitious Composite (ECC) should suppress this brittle fracture at the base of the ...
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Apr 26, 2021 1.Introduction. To address the intrinsic cracking and fracture induced performance degradation of concrete structures and improve the resilience, durability, and sustainability of the infrastructure, the engineered cementitious composites (ECC) promise to be quite damage tolerant and suppress the commonly occurred degradation of concrete infrastructures, for instance, the
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The use of Engineered Cementitious Composites (ECC) for structural design requires a number of assumptions of the material, some of which can be drastically different from those suitable for normal concrete and tension-softening fiber reinforced concrete. This contribution focuses on design assumptions of the constitutive models of ECC in ...
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Abstract This article presents the novel use of a super ductile fiber reinforced cementitious composite for repair and retrofit of concrete structures. Research in repair and retrofit demands immediate attention because of rapidly deteriorating and heightened safety requirements of civil infrastructures worldwide. The strain-hardening Engineered Cementitious Composites have been developed with ...
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@article{osti_5529324, title = {Application of fracture mechanics to cementitious composites}, author = {Shah, S P}, abstractNote = {This work contains 27 chapters which cover recent advances in fracture mechanics applied to cement-based composites: concrete, reinforced concrete, and fiber reinforced concrete. The book, based on a NATO Advanced Study Institute, is a comprehensive survey of ...
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International Association of Fracture Mechanics for Concrete and Concrete Structures (IA-FraMCoS), and the German Structural Concrete Committee ... Impedance of an Engineered Cementitious Composite.....292 Danah Saraireh, Steve Walls, Benny Suryanto, Gerard Starrs, ... Strengthening and Repair with Carbon Concrete Composites – the First ...
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Nov 01, 2008 A new strain hardening composite, ultra high performance strain hardening cementitious composite (UHP-SHCC), with a dense matrix was developed and tested by Kunieda et al. .This material combines excellent protective performance, similar to that of ultra high performance fiber reinforced concrete (UHPFRC), with a significantly higher tensile strain hardening (up to 2%) at peak
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About the author. Baoguo Han received his PhD in the field of smart materials and structures from the Harbin Institute of Technology, China, in 2005.He is currently a professor of civil engineering in the Dalian University of Technology, China. His main research interests include cement and concrete materials, smart materials and structures, multifunctional composites, nanotechnology, sensing ...
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Oct 11, 2017 Kobayashi K, Lizuka T, Kurachi H, et al. (2010) Corrosion protection performance of high performance fibre reinforced cement composites as a repair material. Cement Concrete Comp 32: 411–420. doi: 10.1016/j.cemconcomp.2010.03.005 [17] Maalej M, Li VC (1995) Introduction of strain-hardening engineered cementitious composites in the design of ...
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11. Multiscale modelling of multiple-cracking fracture behaviour of engineered cementitious composites 12. Structural behavior and numerical modelling of impact response of ECC slabs 13. A constitutive model for numerical modelling of steel fibre reinforced concrete 14.
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In this study, engineered cementitious composites (ECC), a type of high-performance fiber-reinforced cementitious composites, was introduced into the ultrathin whitetopping overlay application. ECC material has been developed by Li on the basis of micro mechanical theory over the past decade (14). ECC, with less than 2% (by total
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Rapid repair and retrofit of existing infrastructures demand durable high early strength materials that not only deliver sufficient strength within a few hours of placement but also significantly prolong the maintenance interval. The invention comprises a class of newly developed polyvinyl alcohol (PVA) fiber-reinforced high early strength engineered cementitious composites (ECC) materials ...
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