Novel in-situ controllably grown CSH: Synthesis, characterization and the effect on cement hydration

Liu, Bao; Zhou, Han; Pan, Ganghua; Meng, Han; Li, Dongxu

doi:10.1016/j.cemconcomp.2023.105044

Cited by 14 publications

(1 citation statement)

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“…In addition, calcium hydroxide (CH) is another primary product of calcium silicate hydration, the content of which is about 25% wt. [38][39][40]. The formulations of the cement paste hydrations are summarized in Table 1.…”

Section: Cementmentioning

confidence: 99%

Review of the Interactions between Conventional Cementitious Materials and Heavy Metal Ions in Stabilization/Solidification Processing

Liu

Tan

et al. 2023

Materials

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In the past few decades, solidification/stabilization (S/S) technology has been put forward for the purpose of improving soil strength and inhibiting contaminant migration in the remediation of heavy metal-contaminated sites. Cement, lime, and fly ash are among the most common and effective binders to treat contaminated soils. During S/S processing, the main interactions that are responsible for improving the soil’s behaviors can be summarized as gelification, self-hardening, and aggregation. Currently, precipitation, incorporation, and substitution have been commonly accepted as the predominant immobilization mechanisms for heavy metal ions and have been directly verified by some micro-testing techniques. While replacement of Ca2+/Si4+ in the cementitious products and physical encapsulation remain controversial, which is proposed dependent on the indirect results. Lead and zinc can retard both the initial and final setting times of cement hydration, while chromium can accelerate the initial cement hydration. Though cadmium can shorten the initial setting time, further cement hydration will be inhibited. While for mercury, the interference impact is closely associated with its adapted anion. It should be pointed out that obtaining a better understanding of the remediation mechanism involved in S/S processing will contribute to facilitating technical improvement, further extension, and application.

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Section: Cementmentioning

confidence: 99%