• Experimental Study on High-Early-Strength Precast Concrete

    Download Citation | Experimental Study on High-Early-Strength Precast Concrete | High-early-strength precast concrete technology can improve production …

  • Experimental study on precast concrete moment‐resisting ...

    Apr 14, 2021· Connection failure between precast components greatly increases the risk of collapse of a precast concrete (PC) frame during earthquakes. In this study, a PC frame structure system with sector lead-viscoelastic damper (SLVD) is proposed, in which the SLVD not only protects the wet connection but also absorbs input energy in earthquakes.

  • Experimental Study on Seismic Behavior of Double-Wall ...

    To study the seismic behavior of Double-Wall Precast Concrete (DWPC) shear wall, three full scale specimens are tested and compared under low-cyclic reversed loading, including two DWPC shear walls and one normal Cast-In-Situ (CIS) shear wall. By observing their experimental phenomena and failure modes, contrasting their displacement ductility coefficients, hysteretic curves, skeleton curves ...

  • Early High Strength Concrete Advantages and Challenges

    High Strength concrete is also one of them. The history of high strength concrete is about 35 years old, in late 1960s the invention of water reducing admixtures lead to the high strength precast products and structural elements in beam were cast in situ using high strength concrete.

  • Experimental Study on Seismic Performance of Precast ...

    Experimental Study on Seismic Performance of Precast Reinforced Concrete Core Walls T. Nakachi Fukui University of Technology, Japan R. Tokunaga DKshiken Co., Ltd., Japan SUMMARY: Multistory core walls installed in high-rise reinforced concrete buildings effectively reduce seismic vibration. In

  • Large-scale experimental study on pocket connections in ...

    An experimental investigation was designed and conducted on a large-scale concrete frame constructed out of GFRP reinforced precast concrete elements with four different types of pocketless ...

  • (PDF) EXPERIMENTAL RESEARCH OF PRECAST CONCRETE FLOOR ...

    EXPERIMENTAL RESEARCH OF PRECAST CONCRETE FLOOR BLOCKS WITH IMPROVED RESISTANCE TO HIGH TEMPE. RATURE.pdf. Content available from CC BY-SA 4.0: 56ee58d308ae59dd41c6870a.pdf.

  • Performance of Precast Concrete Beam-to-Column …

    guideline for precast concrete struc­ tures has been recognized by both de­ signers and researchers. '-3 A workshop conducted by the Applied Technology Council on the design of prefabricated concrete buildings for earthquake loads 1 was held in 1981 to determine current knowledge of precast concrete structures and to identify research needs.

  • Experimental study on emulative hybrid precast concrete ...

    Apr 29, 2016· The reversed cyclic lateral loading experiments were conducted on three, full scale, emulative hybrid precast concrete shear wall specimens with different post-tensioned forces and one reference monolithic RC shear wall specimen, and the measured results were then discussed in this paper. The emulative hybrid wall combined grouted vertical reinforcements with unbonded post …

  • EXPERIMENTAL INVESTIGATION ON NANO ALUMINA …

    Particularly suitable for precast concrete and other high early strength requirements. To significantly improve the workability of site mixed and precast concrete without increasing water demand. The p H value of SP 430 is 7 to 8 [4]. 3. EXPERIMENTAL WORK 3.1 Mix Proportioning The proportioning of mix for conventional concrete

  • An Experimental Study to Produce High Early Strength …

    applications. High-early-strength concrete is used for prestressed concrete to allow for early stressing; precast concrete for rapid ... An Experimental Study to Produce High Early Strength Concrete (IJIRST/ Volume 2 / Issue 05/ 025) ... By our experimental study, we have concluded for M40 grade of normal concrete and with plasticizers the ...

  • A Review on Precast Cement Concrete Paver Blocks Using Fly …

    They also have high early strength gain curing time 24hours at 60°C and OPC is curing 28 days in water so geopolymer concrete used Benefit in the manufacture paver block. M Ravi et al. (2012) analyzed that experimental study on strength characteristics and water absorption of …

  • FLEXURAL PERFORMANCE ON RC AND PRECAST CONCRETE …

    In this experimental study, it was clarified the structural performance of reinforced concrete (RC) and precast concrete (PCa) columns with ultra-high-strength materials. Anti-symmetrical cyclic lateral loads and varying axial loads corresponding to the axial load acting on the exterior column in lower story were applied to the column specimens ...

  • STRUCTURAL PROPERTIES OF HIGH STRENGTH CONCRETE AND …

    T1 - STRUCTURAL PROPERTIES OF HIGH STRENGTH CONCRETE AND ITS IMPLICATIONS FOR PRECAST PRESTRESSED CONCRETE. AU - Shah, S. P. AU - Ahmad, Shuaib H. PY - 1985. Y1 - 1985. N2 - Experimental data on the structural properties of high strength concrete left bracket f prime //c greater than 6000 psi (42 MPa) right bracket are reported.

  • Experimental Testing of Precast Concrete Cladding for ...

    Oct 18, 2013· Experimental Testing of Precast Concrete Cladding for Building Facade Systems Kurt M. McMullin, Eugenia Tai and Tu-An Ma San Jose State University Abstract: Since 1998, San Jose State University has conducted research into the seismic behavior of building façade systems, particularly the precast concrete cladding systems. This

  • An Experimental Study to Produce High Early Strength Concrete

    The main aim of this study is to produce high early strength concrete and helping for boosting of construction work and to achieve economy. The main application of our research work is in the field of temporary works. In temporary WORKS if we are

  • A Study on the Development of Non-PC High-Early-Strength ...

    Abstract. This study aims to develop a rapidly hardening type of concrete to achieve the removal of form intensity (more than 10MPa) using the method of curing at room temperature in order to solve some economic environmental problems by omitting the steam curing process involved in producing PC (Precast Concrete).

  • Experimental study on precast concrete sandwich panel with ...

    Experimental study on precast concrete sandwich panel with cross-shaped GFRP connectors Author: Huang, Junqi Jiang, Qing Chong, Xun Ye, Xianguo Wang, Decai Journal: Magazine of Concrete Research Issue Date: 2018 Page: 1-49

  • Development of a fast-hardening retarding high-early ...

    Dec 23, 2020· To widen bridges, a usual method is to cast joint connections between new and old bridge decks without traffic interruption. The traffic vibrations have negative influence on the quality of joint connections. Shortening the construction time can alleviate the impact on the traffics, a fast-hardening retarding high-early-strength concrete (FRHC) for the connections is in need. In this study ...

  • Experimental Study on the Shear Behavior of Precast Wall ...

    The precast shear wall behavior in the serviceability and ultimate limit states depends on the shear and shear-flexural behavior of the joints between the precast components or between the precast component and footing. This study presents a series of tests on the shear strength of joints, which were applied to the interface of precast shear walls.

  • (PDF) LITERATURE WORK STUDY OF PRECAST CONCRETE BEAM …

    M. N. KATAOKA, M. A. FERREIRA, A. L. H. C. EL DEBS, A study on the behavior of beam-column connections in precast concrete structures: experimental analysis, Ibracon Structures and Materials Journal, Volume 5, Number 5, 2012: Due to the large increase in the 42 use of precast concrete structures in multistory buildings, this work covers a study ...

  • Large-scale experimental study on pocket connections in ...

    This paper presents the results of an experimental study on a full-scale precast concrete frame reinforced with glass fibre reinforced polymer (GFRP) bars that was tested to failure under lateral cyclic loading. Within the frame four different pocket connections are tested that will …

  • Experimental Study on High-Early-Strength Precast Concrete

    Experimental Study on High-Early-Strength Precast Concrete. High-early-strength precast concrete technology can improve production efficiency and save energy. The use of early-strength type polycarboxylate water reducers can shorten the setting time of concrete and steam curing time of precast concrete and can significantly improve the early ...

  • Effectiveness of High-Early Strength Concrete Class 50AF ...

    Effectiveness of High-Early Strength Concrete Class 50AF with Polypropylene Fibers as a Cost-Effective Alternative for Field-Cast Connections of Precast Elements in Accelerated Bridge Construction By PIs: Arya Ebrahimpour and Mustafa Mashal Students: Maximilian Casanova, Utsa Rashique, Christopher Clauson, and Ali Shokrgozar Prepared for

  • Flexural Behavior of High-Early-Strength Self ...

    A research program investigated the application of high-early-strength self-consolidating concrete (SCC) for precast, prestressed bridge girders. The SCC and conventional concrete (CC) in mixtures had a target 16-h release strength of 34 MPa (5,000 psi).

  • Experimental study on the development of compressive ...

    This paper focused on developing compressive strength without steam curing of precast concrete. • Calcium-based hardening accelerator for C 3 S was used for early-stage strength.. Compressive strength of concrete was more than 10 MPa after 9 h of curing at 20 °C experimentally.. Hardening accelerator 1–3% of cement mass is proper for setting time and compressive strength.

  • Development of high early strength in concrete ...

    Jun 20, 2019· Rapid repair and retrofit of existing infrastructures demand durable high early strength materials that not only deliver sufficient strength within a short time after placement but also significantly prolong the maintenance interval. This research paper presents the effects on the mechanical properties and durability of alccofine concrete of the addition of calcium nitrate as a non-chloride ...

  • Experimental Testing of Precast Connections for Jointed ...

    cost advantage of adopting a precast concrete building core over a traditional cast in-situ core. Figure 1. Example of a wet joint in jointed precast concrete cores. The first objective of this experimental study was to assess the behaviour of WSP connections.

  • Experimental Study on High-Early-Strength Precast Concrete

    Download Citation | Experimental Study on High-Early-Strength Precast Concrete | High-early-strength precast concrete technology can improve production …

  • Experimental study on precast concrete moment‐resisting ...

    Apr 14, 2021· Connection failure between precast components greatly increases the risk of collapse of a precast concrete (PC) frame during earthquakes. In this study, a PC frame structure system with sector lead-viscoelastic damper (SLVD) is proposed, in which the SLVD not only protects the wet connection but also absorbs input energy in earthquakes.

  • Experimental Study on Seismic Behavior of Double-Wall ...

    To study the seismic behavior of Double-Wall Precast Concrete (DWPC) shear wall, three full scale specimens are tested and compared under low-cyclic reversed loading, including two DWPC shear walls and one normal Cast-In-Situ (CIS) shear wall. By observing their experimental phenomena and failure modes, contrasting their displacement ductility coefficients, hysteretic curves, skeleton curves ...

  • Early High Strength Concrete Advantages and Challenges

    High Strength concrete is also one of them. The history of high strength concrete is about 35 years old, in late 1960s the invention of water reducing admixtures lead to the high strength precast products and structural elements in beam were cast in situ using high strength concrete.

  • Experimental Study on Seismic Performance of Precast ...

    Experimental Study on Seismic Performance of Precast Reinforced Concrete Core Walls T. Nakachi Fukui University of Technology, Japan R. Tokunaga DKshiken Co., Ltd., Japan SUMMARY: Multistory core walls installed in high-rise reinforced concrete buildings effectively reduce seismic vibration. In

  • Large-scale experimental study on pocket connections in ...

    An experimental investigation was designed and conducted on a large-scale concrete frame constructed out of GFRP reinforced precast concrete elements with four different types of pocketless ...

  • (PDF) EXPERIMENTAL RESEARCH OF PRECAST CONCRETE FLOOR ...

    EXPERIMENTAL RESEARCH OF PRECAST CONCRETE FLOOR BLOCKS WITH IMPROVED RESISTANCE TO HIGH TEMPE. RATURE.pdf. Content available from CC BY-SA 4.0: 56ee58d308ae59dd41c6870a.pdf.

  • Performance of Precast Concrete Beam-to-Column …

    guideline for precast concrete struc­ tures has been recognized by both de­ signers and researchers. '-3 A workshop conducted by the Applied Technology Council on the design of prefabricated concrete buildings for earthquake loads 1 was held in 1981 to determine current knowledge of precast concrete structures and to identify research needs.

  • Experimental study on emulative hybrid precast concrete ...

    Apr 29, 2016· The reversed cyclic lateral loading experiments were conducted on three, full scale, emulative hybrid precast concrete shear wall specimens with different post-tensioned forces and one reference monolithic RC shear wall specimen, and the measured results were then discussed in this paper. The emulative hybrid wall combined grouted vertical reinforcements with unbonded post …

  • EXPERIMENTAL INVESTIGATION ON NANO ALUMINA …

    Particularly suitable for precast concrete and other high early strength requirements. To significantly improve the workability of site mixed and precast concrete without increasing water demand. The p H value of SP 430 is 7 to 8 [4]. 3. EXPERIMENTAL WORK 3.1 Mix Proportioning The proportioning of mix for conventional concrete

  • An Experimental Study to Produce High Early Strength …

    applications. High-early-strength concrete is used for prestressed concrete to allow for early stressing; precast concrete for rapid ... An Experimental Study to Produce High Early Strength Concrete (IJIRST/ Volume 2 / Issue 05/ 025) ... By our experimental study, we have concluded for M40 grade of normal concrete and with plasticizers the ...

  • A Review on Precast Cement Concrete Paver Blocks Using Fly …

    They also have high early strength gain curing time 24hours at 60°C and OPC is curing 28 days in water so geopolymer concrete used Benefit in the manufacture paver block. M Ravi et al. (2012) analyzed that experimental study on strength characteristics and water absorption of …

  • FLEXURAL PERFORMANCE ON RC AND PRECAST CONCRETE …

    In this experimental study, it was clarified the structural performance of reinforced concrete (RC) and precast concrete (PCa) columns with ultra-high-strength materials. Anti-symmetrical cyclic lateral loads and varying axial loads corresponding to the axial load acting on the exterior column in lower story were applied to the column specimens ...

  • STRUCTURAL PROPERTIES OF HIGH STRENGTH CONCRETE AND …

    T1 - STRUCTURAL PROPERTIES OF HIGH STRENGTH CONCRETE AND ITS IMPLICATIONS FOR PRECAST PRESTRESSED CONCRETE. AU - Shah, S. P. AU - Ahmad, Shuaib H. PY - 1985. Y1 - 1985. N2 - Experimental data on the structural properties of high strength concrete left bracket f prime //c greater than 6000 psi (42 MPa) right bracket are reported.

  • Experimental Testing of Precast Concrete Cladding for ...

    Oct 18, 2013· Experimental Testing of Precast Concrete Cladding for Building Facade Systems Kurt M. McMullin, Eugenia Tai and Tu-An Ma San Jose State University Abstract: Since 1998, San Jose State University has conducted research into the seismic behavior of building façade systems, particularly the precast concrete cladding systems. This

  • An Experimental Study to Produce High Early Strength Concrete

    The main aim of this study is to produce high early strength concrete and helping for boosting of construction work and to achieve economy. The main application of our research work is in the field of temporary works. In temporary WORKS if we are

  • A Study on the Development of Non-PC High-Early-Strength ...

    Abstract. This study aims to develop a rapidly hardening type of concrete to achieve the removal of form intensity (more than 10MPa) using the method of curing at room temperature in order to solve some economic environmental problems by omitting the steam curing process involved in producing PC (Precast Concrete).

  • Experimental study on precast concrete sandwich panel with ...

    Experimental study on precast concrete sandwich panel with cross-shaped GFRP connectors Author: Huang, Junqi Jiang, Qing Chong, Xun Ye, Xianguo Wang, Decai Journal: Magazine of Concrete Research Issue Date: 2018 Page: 1-49

  • Development of a fast-hardening retarding high-early ...

    Dec 23, 2020· To widen bridges, a usual method is to cast joint connections between new and old bridge decks without traffic interruption. The traffic vibrations have negative influence on the quality of joint connections. Shortening the construction time can alleviate the impact on the traffics, a fast-hardening retarding high-early-strength concrete (FRHC) for the connections is in need. In this study ...

  • Experimental Study on the Shear Behavior of Precast Wall ...

    The precast shear wall behavior in the serviceability and ultimate limit states depends on the shear and shear-flexural behavior of the joints between the precast components or between the precast component and footing. This study presents a series of tests on the shear strength of joints, which were applied to the interface of precast shear walls.

  • (PDF) LITERATURE WORK STUDY OF PRECAST CONCRETE BEAM …

    M. N. KATAOKA, M. A. FERREIRA, A. L. H. C. EL DEBS, A study on the behavior of beam-column connections in precast concrete structures: experimental analysis, Ibracon Structures and Materials Journal, Volume 5, Number 5, 2012: Due to the large increase in the 42 use of precast concrete structures in multistory buildings, this work covers a study ...

  • Large-scale experimental study on pocket connections in ...

    This paper presents the results of an experimental study on a full-scale precast concrete frame reinforced with glass fibre reinforced polymer (GFRP) bars that was tested to failure under lateral cyclic loading. Within the frame four different pocket connections are tested that will …

  • Experimental Study on High-Early-Strength Precast Concrete

    Experimental Study on High-Early-Strength Precast Concrete. High-early-strength precast concrete technology can improve production efficiency and save energy. The use of early-strength type polycarboxylate water reducers can shorten the setting time of concrete and steam curing time of precast concrete and can significantly improve the early ...

  • Effectiveness of High-Early Strength Concrete Class 50AF ...

    Effectiveness of High-Early Strength Concrete Class 50AF with Polypropylene Fibers as a Cost-Effective Alternative for Field-Cast Connections of Precast Elements in Accelerated Bridge Construction By PIs: Arya Ebrahimpour and Mustafa Mashal Students: Maximilian Casanova, Utsa Rashique, Christopher Clauson, and Ali Shokrgozar Prepared for

  • Flexural Behavior of High-Early-Strength Self ...

    A research program investigated the application of high-early-strength self-consolidating concrete (SCC) for precast, prestressed bridge girders. The SCC and conventional concrete (CC) in mixtures had a target 16-h release strength of 34 MPa (5,000 psi).

  • Experimental study on the development of compressive ...

    This paper focused on developing compressive strength without steam curing of precast concrete. • Calcium-based hardening accelerator for C 3 S was used for early-stage strength.. Compressive strength of concrete was more than 10 MPa after 9 h of curing at 20 °C experimentally.. Hardening accelerator 1–3% of cement mass is proper for setting time and compressive strength.

  • Development of high early strength in concrete ...

    Jun 20, 2019· Rapid repair and retrofit of existing infrastructures demand durable high early strength materials that not only deliver sufficient strength within a short time after placement but also significantly prolong the maintenance interval. This research paper presents the effects on the mechanical properties and durability of alccofine concrete of the addition of calcium nitrate as a non-chloride ...

  • Experimental Testing of Precast Connections for Jointed ...

    cost advantage of adopting a precast concrete building core over a traditional cast in-situ core. Figure 1. Example of a wet joint in jointed precast concrete cores. The first objective of this experimental study was to assess the behaviour of WSP connections.