Hydration products and microstructural properties analysis of magnesium phosphate cement comprising with industrial residues

Haque, M. Aminul; Chen, Bing; Maierdan, Yierfan; Wang, Jianming

doi:10.1016/j.conbuildmat.2022.128228

Cited by 5 publications

(1 citation statement)

References 37 publications

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“…The XRD patterns of the clean paste specimens of different samples after curing for 28 d are shown in Figure 3b. The spectrum of the blank control group shows the diffraction peaks of Ca(OH) 2 , CaCO 3 , SiO 2 , C 2 S, and C 3 S [31,32]. The Ca(OH) 2 , C 2 S, and C 3 S peaks at 2θ = 32.3 • have the highest intensity, indicating that the 28-day cement is not fully hydrated and contains a large number of unreacted substances.…”

Section: Analysis Of Hydration Productsmentioning

confidence: 99%

The Effects of Various Silicate Coatings on the Durability of Concrete: Mechanisms and Implications

Li,

Song,

Zhang

et al. 2024

Buildings

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Silicate solutions can improve the durability of concrete conveniently and effectively. To horizontally compare the enhancement effects of different composite silicate solutions, three types of silicate surface treatment agents were prepared by using sodium silicate, potassium silicate, and lithium silicate as the main agents, along with urea, sodium polyacrylate, catalysts, and fluoro-carbon surfactants as the adjuvants. Furthermore, their effects on the durability of concrete were compared. The results showed that silicate surface treatment could reduce the content of Ca(OH)2, increase the content of hydrated calcium silicate (C-S-H), and improve the compactness and hydrophobicity of the hardened cement surface. Although the three surface treatments enhanced the durability of concrete, the effects differed based on the complexities and mixtures. The sodium silicate compounded with potassium silicate performed the best of all three, wherein the content of the C-S-H gel increased by 389.8%, the permeability decreased by 60.6%, the water contact angle improved to 83.5° and the chloride ion resistance and freeze–thaw resistance of concrete increased by 36.7% and 37.34%, respectively, compared with the control sample.

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Section: Analysis Of Hydration Productsmentioning

confidence: 99%

The Effects of Various Silicate Coatings on the Durability of Concrete: Mechanisms and Implications

Li,

Song,

Zhang

et al. 2024

Buildings

View full text Add to dashboard Cite

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Magnesium cements and their carbonation curing: a state-of-the-art review

Haque,

Dai,

Zhao

2024

Low-carbon Mater. Green Constr.

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The Portland cement (PC) production industry is a key contributor of CO2 emission. The demand of cement is mounting day by day due to the rapid infrastructure development in the world. Consequently, CO2 discharge from the construction sector is continuously increasing and accounts for about 8% of the total CO2 emission, which becomes a global concern nowadays. Wide applications of eco-friendly cements can significantly reduce the CO2 release. Therefore, use of magnesium cements (MCs) might be a promising solution to ease such concern. As a rapid hardening cement, MCs can be characterized as low-carbon due to their lower embodied energy and carbon storage ability during the service. This review mainly summarizes the findings of previous studies related to the carbonation performances of PC blended with magnesia and MCs products, and particularly, the influence of Accelerated carbonation curing (ACC) process on the properties of MCs and corresponding CO2 sequestration performance. The effects of ACC on mechanical strength, hydration and mineral carbonation mechanisms, pore structures, pore solution pH and thermal properties are discussed. The limitations of existing research are also discussed, which may provide the directions for future research and development of MC material products.

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Experimental study on solidified dredged sediment with MgO and industrial waste residue

Kong

Zhang

Liang

et al. 2023

Construction and Building Materials

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Hydration products and microstructural properties analysis of magnesium phosphate cement comprising with industrial residues

Cited by 5 publications

References 37 publications

The Effects of Various Silicate Coatings on the Durability of Concrete: Mechanisms and Implications

The Effects of Various Silicate Coatings on the Durability of Concrete: Mechanisms and Implications

Magnesium cements and their carbonation curing: a state-of-the-art review

Experimental study on solidified dredged sediment with MgO and industrial waste residue

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