Results 21 to 30 of about 15,932 (235)

Activation of Blast Furnace Slag with CFB Fly Ash as a Supplementary Binder Material: Hydration Products and Effects of Sulfate Attack

Crystals, 2021
Circulating Fluidized Bed (CFB) combustion is a clean technology for burning, with advantages of adapting to a large variety of fuel, high combustion efficiency, lower NOx emissions, and stable operation. The residue collected from the ash-hoppers of the
Guan-Yu Chen, Wei-Hsing Huang
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Long-term properties and microstructure change of engineered cementitious composites subjected to high sulfate coal mine water in drying-wetting cycles

Materials & Design, 2021
The mine water environment in underground reservoirs poses great threat to the durability of artificial concrete dams, mainly due to the coupled sulfate and drying-wetting cycles.
Zhenbo Wang, Peng Sun, Jianping Zuo, Chang Liu, Yudong Han, Zishan Zhang   +5 more
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Evaluation of Relationship between Water Absorption and Durability of Concrete Materials

Advances in Materials Science and Engineering, 2014
Environment has significant effects on the water absorption of concrete materials. This paper presents an experimental study of the influence of water absorption on the durability of concrete materials.
S. P. Zhang, L. Zong
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Examination of sulfate resistance of nano-alumina added ordinary Portland cement paste, focusing on the two different crystallinity of nano-aluminas

International Journal of Concrete Structures and Materials, 2023
This study examined the influence of the crystallinity of added nano-alumina on the sulfate resistance of ordinary Portland cement (OPC) paste. Two crystalline types of nano-aluminas (α-and γ-phase) were incorporated in cement pastes, which were exposed ...
Juan Yu, Sungwon Sim, Haemin Song, Dohoon Kim, Kyungcheol Jang, Dongho Jeon, Seung Cho, Jae Eun Oh   +7 more
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Statistical Model for Predicting the Optimum Gypsum Content in Concrete

Journal of Engineering, 2023
The problem of internal sulfate attack in concrete is widespread in Iraq and neighboring countries.This is because of the high sulfate content usually present in sand and gravel used in it.
Zena Kudair Abbas, Riyadh S. Al-Rawi , Ali H. Al-Neaime   +2 more
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Cracking of residential concrete foundations in eastern Connecticut, USA from oxidation of pyrrhotite

Case Studies in Construction Materials, 2022
Extensive cracking in thousands of residential foundations in eastern Connecticut is found to be due to expansions from oxidation of pyrrhotite in crushed gneiss coarse aggregate in concrete.
Dipayan Jana
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Experimental study on sulfate resistance of concrete with recycled aggregate modified with polyvinyl alcohol (PVA)

Case Studies in Construction Materials, 2021
Using the wastes as a recycled concrete aggregate (RCA) is a promising technology to reduce the impact of construction and demolition wastes on the environment and the shortage of natural resources.
Haider M. Al-Baghdadi
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Stochastic Dynamic Model of Sulfate Corrosion Reactions in Concrete Materials considering the Effects of Colored Gaussian Noises

Complexity, 2019
The corrosion reactions in concrete materials subjected to external environment attack can lead to the deterioration of concrete. However, the effects of internal fluctuations on the corrosion reaction process have not been reported in current studies on
Tao Li, Bin Zhang
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Experimental Study on Mechanism of Graphene Oxide-Modified Coral Sand Cement Mortar to Resist Sulfate Erosion

Geofluids, 2022
Coral sand particles with low strength and rich pores affect the mechanical properties and durability of their cement-based materials. This paper investigates the mechanical properties and internal pore evolution of graphene oxide-modified coral sand ...
Bin Chen, Jianlin Zhang, Yanlin Zhao, Yiwei Lu   +3 more
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Combined influence and mechanism of superabsorbent polymers and waterborne epoxy coatings on the durability of self-curing concrete under compound sodium and magnesium sulfate attacks

Case Studies in Construction Materials
The corrosion of concrete structures near seawater leads to severe performance deterioration and significant economic losses. A novel method to enhance resistance to compound sulfate attack in concrete was investigated, where superabsorbent polymer (SAP)
Wenzhen Wang, Aiqin Shen, Juanlan Zhou, Obas John Ebohon, Qiwei Zhan   +4 more
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