dicalciumsilicate monohydrate

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 碱土金属氧阴离子化合物
• 英文名称: dicalciumsilicate monohydrate
• 英文别名: dicalcium silicate hydrate；dicalciumsilicate monohydrate Ca2SiO4*H2O, α；Calcium;silicate;hydrate；calcium;silicate;hydrate
• 化学式: 2Ca*H₂O*O₄Si
• 分子量: 190.254
• InChiKey: JVDMHQLZYZEQNK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -6.34
• 重原子数：
  7
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  93.2
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  silica 、 dicalciumsilicate monohydrate 、 calcium oxide 以 水 为溶剂， 生成 xonotlite
  参考文献：
  名称：

  Winkler, A.; Wieker, W., Zeitschrift fur Anorganische und Allgemeine Chemie

  摘要：

  DOI：
• 作为产物：
  描述：

  silica 、 calcium oxide 以 水 为溶剂， 以<1的产率得到dicalciumsilicate monohydrate
  参考文献：
  名称：

  Winkler, A.; Wieker, W., Zeitschrift fur Anorganische und Allgemeine Chemie

  摘要：

  DOI：

文献信息

• Winkler, A.; Wieker, W., Zeitschrift fur Anorganische und Allgemeine Chemie
  作者：Winkler, A.、Wieker, W.

  DOI：——

  日期：——
• Study on the early crystallization of calcium silicate hydrate (C-S-H) in the presence of polycarboxylate superplasticizers
  作者：J. Plank、M. Schönlein、V. Kanchanason

  DOI：10.1016/j.jorganchem.2018.02.005

  日期：2018.8

  Calcium silicate hydrate (C-S-H) presents the strength-providing phase in hardened cement and concrete. Its nucleation and very early overall growth are not yet fully understood. Here, the impact of methacrylate ester-based PCEs (a common type of dispersant used to fluidize concrete) on the nucleation and crystallization of C-S-H precipitated from aqueous solutions of Ca(NO3)(2) and Na2SiO3 was investigated. It was found that in the absence of PCEs, most unexpectedly globular nanoparticles of C-S-H with a diameter of similar to 20-60 nm are favored. Thereafter, within less than 1 h the globuli convert to the well-known nanofoils of C-S-H. According to these observations, the very early C-S-H is formed following a non-classical nucleation mechanism. In the presence of PCEs, the initial globules show a core-shell morphology, presumably with PCE polymers as shell which delays the conversion to the nanofoils for several hours. The PCE polymers exhibiting higher anionicity delayed the transformation to nanofoils more than the PCEs possessing lower anionic charge. (C) 2018 Elsevier B.V. All rights reserved.