Experimental Research on Properties of UHPC Based on Composite Cementitious Materials System

Kong, Fande; Xu, Fang; Xiong, Qiuyang; Xu, Sihong; Li, Xiang; Fu, Wenxiang; Guo, Zhijiong

doi:10.3390/coatings12081219

Cited by 3 publications

(3 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…vehicular traffic, and corrosive agents can lead to deterioration and reduced functionality of expansion joints [3]- [6]. Regular inspection, maintenance, and repair are essential to extend their service life and prevent disruptions to bridge operations.…”

Section: Introductionmentioning

confidence: 99%

The first application of ultra‑high performance Concrete Link Slab in Malaysia

Tan,

Hafezolghorani,

Mohamed

et al. 2024

AEJ

View full text Add to dashboard Cite

Conventional expansion joints in road bridges often suffer from issues like leakage, debonded seals, concrete damage, and short service life. To address these problems, a solution involving flexible link slabs using normal strength concrete (NSC) was proposed. While this method can enhance serviceability and reduce maintenance costs, it lacks durability and tensile strength. Recent interest has focused on cast-in-situ ultra-high performance concrete (UHPC) link slabs due to their exceptional mechanical properties, early strength, durability, ductility, and energy-absorption capabilities. However, there is limited information on their field implementation. To address this gap, a pilot UHPC link slab was designed and implemented to replace a damaged bituminous plug expansion joint in a Malaysian road bridge. The pilot link slab followed New York State Department of Transport (NYSDOT) guidelines and used a high early strength UHPC mix with minimal shrinkage through the combination of expansive agents and shrinkage-reducing admixture (SRA). Monitoring the project over two years has shown no performance concerns with the UHPC link slab. This paper provides a comprehensive overview of the construction process, along with experimental results on the mechanical properties and shrinkage characteristics of the new UHPC.

show abstract

Section: Introductionmentioning

confidence: 99%

The first application of ultra‑high performance Concrete Link Slab in Malaysia

Tan,

Hafezolghorani,

Mohamed

et al. 2024

AEJ

View full text Add to dashboard Cite

show abstract

“…Current issues in the field of bridge expansion joints include premature wear and deterioration [4], which often result from exposure to harsh environmental conditions such as heavy rainfall, temperature fluctuations, and the presence of corrosive agents [5]. Additionally, inadequate sealing and drainage systems can lead to water and debris accumulation within the joints, further accelerating deterioration and compromising safety [6]. Addressing these issues is essential for ensuring the long-term performance and safety of bridges, especially in regions with challenging climates [7].…”

Section: Introductionmentioning

confidence: 99%

Optimizing Cement Asphalt Mortar Mixtures for Bridge Expansion Joints in Tropical Climates: Performance and Durability Assessment

Kim,

2023

Buildings

View full text Add to dashboard Cite

In this study, the suitability of various Cement Asphalt Mortar (CAM) mixtures for bridge expansion joint applications in tropical climates was quantitatively assessed. A comprehensive analysis encompassed key properties, including mixing stability, flowability, unconfined compressive strength, expansion characteristics, and resistance to acidic and alkali environments. The influence of high-temperature exposure on unconfined compressive strength and the microstructural features were also examined. The results revealed a discernible trend: lower cement content, in conjunction with anionic Asphalt Emulsion (AE) or epoxy resin, significantly enhanced mixing stability and flowability while contributing to improved unconfined compressive strength and chemical degradation resistance. Notably, epoxy resin emerged as a valuable component in mitigating high-temperature-induced strength reduction, indicating potential promise for CAM mixture design. SEM analysis visually supported these findings by highlighting the microstructural distinctions among CAM mixtures. Quantitatively, the findings indicated that CAM mixtures with a 25% cement content and 75% anionic AE exhibited an 11% improvement in mixing stability, along with a 13% enhancement in flowability, relative to the control mixture with 100% cement. Additionally, CAM mixtures incorporating epoxy resin (at various percentages) with anionic AE exhibited a significant 15% resistance to high-temperature-induced UCS reduction, surpassing other mixtures. The SEM micrographs visually confirmed the superior microstructural connectivity achieved with epoxy resin, further validating the observed enhancements. These quantitative results offer a robust foundation for tailoring CAM mixture compositions to optimize their suitability for rigorous infrastructure projects in tropical climates.

show abstract

“…Among the various cements available for concrete, sulfoaluminate cement (SAC)-based binders have attracted a great deal of attention. SAC meets many essential requirements for these applications, namely, it is quick setting and develops high early strength (Kong et al, 2022). As a rapid-hardening cement, SAC has been increasingly used for building in cold regions and in repair structures due to its notable properties such as high early strength, freezing resistance, and low permeability and alkalinity (Cai and Zhao, 2016).…”

Section: Introductionmentioning

confidence: 99%

An experimental study and axial tensile constitutive model of the toughness of PP-SACC for rapid repairs

Xie¹,

et al. 2023

Front. Built Environ.

View full text Add to dashboard Cite

To improve the economic benefits of engineered cementitious composites and control the repair cycle, repair materials were designed, with the key components of the mixture being low-cost polypropylene (PP) fibers and fast-setting sulfoaluminate cement. The effects of water/binder ratio, fiber content, and aggregate particle size on the flowability, mechanical properties, and toughness of the polypropylene fiber-reinforced sulfoaluminate cementitious composite (PP-SACC) were explored. Based on experimentally measured axial tensile stress–strain curves, a constitutive model of PP-SACC was derived in terms of fiber content and water/binder ratio. Additionally, the correlation coefficients representing the relationships of the mixture indices with the tensile properties were explored based on revised gray relational analysis. Test results indicated that fiber content and water/binder ratio were the most important factors affecting the mechanical properties, toughness, and fluidity of the material; in contrast, the influence of aggregate size was slight. The PP-SACC mixture with an aggregate size of 75 µm, a water/binder ratio of 0.30, and a fiber content of 3.0% demonstrated an excellent degree of toughness and exhibited a flexural hardening phenomenon under bending load.

show abstract

Experimental Research on Properties of UHPC Based on Composite Cementitious Materials System

Cited by 3 publications

References 24 publications

The first application of ultra‑high performance Concrete Link Slab in Malaysia

The first application of ultra‑high performance Concrete Link Slab in Malaysia

Optimizing Cement Asphalt Mortar Mixtures for Bridge Expansion Joints in Tropical Climates: Performance and Durability Assessment

An experimental study and axial tensile constitutive model of the toughness of PP-SACC for rapid repairs

Contact Info

Product

Resources

About