Early age setting, shrinkage and tensile characteristics of ultra high performance fiber reinforced concrete

Yoo, Doo Yeol; Park, Jung Jun; Kim, Sung Wook; Yoon, Young Soo

doi:10.1016/j.conbuildmat.2012.12.015

Cited by 127 publications

(47 citation statements)

References 17 publications

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“…Reduction of the crack opening prevents water and harmful chemicals from entering the matrix, which in turn increases its durability. When designed properly, fibers can efficiently control and arrest cracks promoted by mechanical loading or shrinkage of the matrix [37,38]. The addition of suitable fibers can significantly alter the behavior of an intrinsically brittle cementitious matrix, creating a tough and ductile material [39].…”

Section: Crack Bridgingmentioning

confidence: 99%

Impact of surface plasma treatment on the performance of PET fiber reinforcement in cementitious composites

Trejbal

Kopecký

Tesárek

et al. 2016

Cement and Concrete Research

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Section: Crack Bridgingmentioning

confidence: 99%

Impact of surface plasma treatment on the performance of PET fiber reinforcement in cementitious composites

Trejbal

Kopecký

Tesárek

et al. 2016

Cement and Concrete Research

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“…However, some studies (Brown 2006;Graybeal 2007;Habel 2004;Morin et al 2001) showed that the setting time for UHPC can be delayed for up to 30-40 h due to the set retarding effect of high SP dosage. Furthermore, it was observed that surface covering of freshly mixed UHPC delayed its setting time (Yoo et al 2013). …”

Section: Setting Timementioning

confidence: 99%

“…In another study, Graybeal (2006) defined the initial setting time as ''a penetration resistance of 3.45 MPa (0.5 ksi) at 15 h after casting'' and the final setting time as ''a penetration resistance of 27.60 MPa (4 ksi) at about 18-20 h after casting'' based on AASHTO T197 (2000). Generally, the reported setting time of UHPC ranged from 6 to 12 h depending on the mixture design (Richard and Cheyrezy 1995;Yoo et al 2013;Kazemi and Lubell 2012). However, some studies (Brown 2006;Graybeal 2007;Habel 2004;Morin et al 2001) showed that the setting time for UHPC can be delayed for up to 30-40 h due to the set retarding effect of high SP dosage.…”

Section: Setting Timementioning

confidence: 99%

Ultra-High Performance Concrete: Mechanical Performance, Durability, Sustainability and Implementation Challenges

Abbas

Nehdi

Saleem

2016

Int J Concr Struct Mater

321

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In this study, an extensive literature review has been conducted on the material characterization of UHPC and its potential for large-scale field applicability. The successful production of ultra-high performance concrete (UHPC) depends on its material ingredients and mixture proportioning, which leads to denser and relatively more homogenous particle packing. A database was compiled from various research and field studies around the world on the mechanical and durability performance of UHPC. It is shown that UHPC provides a viable and long-term solution for improved sustainable construction owing to its ultrahigh strength properties, improved fatigue behavior and very low porosity, leading to excellent resistance against aggressive environments. The literature review revealed that the curing regimes and fiber dosage are the main factors that control the mechanical and durability properties of UHPC. Currently, the applications of UHPC in construction are very limited due to its higher initial cost, lack of contractor experience and the absence of widely accepted design provisions. However, sustained research progress in producing UHPC using locally available materials under normal curing conditions should reduce its material cost. Current challenges regarding the implementation of UHPC in full-scale structures are highlighted. This study strives to assist engineers, consultants, contractors and other construction industry stakeholders to better understand the unique characteristics and capabilities of UHPC, which should demystify this resilient and sustainable construction material.

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“…Shrinkage had negative impacts on the durability of UHPC, which needed to be controlled [12]. The incorporation of shrinkage reducing admixture and expansive agent was the effective method to improve the volume stability of UHPC.…”

Section: Introductionmentioning

confidence: 99%

Effects of Shrinkage Reducing Agent and Expansive Admixture on the Volume Deformation of Ultrahigh Performance Concrete

Qin

Zhang

et al. 2017

Advances in Materials Science and Engineering

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This paper investigated the influences of shrinkage reducing agent and expansive admixture on autogenous and drying shrinkage of ultrahigh performance concrete (UHPC) containing antifoaming admixture. The shrinkage reducing agent was used at dosage of 0.5%, 1%, and 2% and the expansive admixture was used at dosage of 2% to 4% by mass of cementitious material. The results show that the air content of UHPC increases with the higher addition of shrinkage reducing agent and expansive admixtures. However, the fluidity, compressive strength, and shrinkage of UHPC exhibit a declining tendency. The usage of expansive agent at dosage of 4% significantly reduces the shrinkage of UHPC. The 7-day autogenous shrinkage was decreased by 16.0% and 28-day drying shrinkage was decreased by 29.5%, respectively. Shrinkage reducing agent at dosage of 2% reduced the 7-day autogenous shrinkage by 44.3% and 28-day drying shrinkage by 50.2%. Compared with expansive admixture, shrinkage reducing agent exhibits more efficient shrinkage reduction effect on UHPC.

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Early age setting, shrinkage and tensile characteristics of ultra high performance fiber reinforced concrete

Cited by 127 publications

References 17 publications

Impact of surface plasma treatment on the performance of PET fiber reinforcement in cementitious composites

Impact of surface plasma treatment on the performance of PET fiber reinforcement in cementitious composites

Ultra-High Performance Concrete: Mechanical Performance, Durability, Sustainability and Implementation Challenges

Effects of Shrinkage Reducing Agent and Expansive Admixture on the Volume Deformation of Ultrahigh Performance Concrete

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