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Mohammad Sadegh Tale Masoule and Ali Ghahremaninezhad
This study investigates the hydration, microstructure, autogenous shrinkage, electrical resistivity, and mechanical properties of Portland cement pastes modified with PEG-PPG triblock copolymers with varied molecular weights. The early age properties inc...
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Haitang Zhu, Yunjian He, Dongdong Ji, Jiyu Tang and Chuanchuan Li
In the precast building structure, the joint is the key part that affects the mechanical performance of the assembly structure. By selecting coarse and fine fraction aggregate; adding high quality mineral admixture, expansive agent, and water-reducing ag...
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Niall Holmes, Mark Tyrer and Denis Kelliher
This paper presents a prediction of chemical shrinkage volume created during the hydration of two cements over time using a thermodynamic model. Chemical shrinkage in hydrating cements is a result of internal volume change over time within sealed conditi...
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Bernard A. Zulu, Shingo Miyazawa and Nobukazu Nito
Thermal stresses are generated in concrete during the accelerated curing process in precast concrete. These stresses may cause concrete to crack, which would have a negative effect on the general concrete performance. This paper provides the results of t...
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Zhenming Li, Xingliang Yao, Yun Chen, Tianshi Lu and Guang Ye
Alkali-activated slag and fly ash (AASF) materials are emerging as promising alternatives to conventional Portland cement. Despite the superior mechanical properties of AASF materials, they are known to show large autogenous shrinkage, which hinders the ...
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Bernard A. Zulu, Shingo Miyazawa and Nobukazu Nito
Accelerated curing is used for mass production in the precast concrete industry. Autogenous shrinkage and drying shrinkage occur in concrete, during and after accelerated curing. Thus, thermal cracks may occur in concrete due to both heating and cement h...
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David O. Nduka, John O. Ameh, Opeyemi Joshua and Rapheal Ojelabi
Self-cured concrete is a type of concrete with a special ability to reduce autogenous shrinkage responsible for early-stage cracking. It is useful generally for the construction of high rise buildings and bridges. The application and use of this techniqu...
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Carlos Videla, Cristián Gaedicke
Pág. Page 64 - 77
In this research, the most important properties of HPC were analyzed. The study was focused on HPC with specified28 days compressive cylindrical strengths between 60 to 110 MPa and made with locally available materials: RapidHardening Portland Blast Furn...
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