In this paper, calcium silicate hydrate (CSH) gel and calcium silicate hydrate doped with asphalt emulsion (EACSH) were synthesised using Na₂SiO₃•9H₂O, Ca (NO₃)₂•4H₂O, NaOH, deionised water and anionic asphalt emulsion. N₂ isothermal adsorption, X‐ray diffraction (XRD) and scanning electron microscopy (SEM) were used to study the effect of asphalt emulsion on morphology and porosity of CSH. The Frenkel–Halsey–Hill (FHH) model was used to analyse the surface fractal characteristics. The results showed that the asphalt emulsion had little effects on the change of specific surface areas and the distribution of the micropores for CSH gel, which may be related to the absence of the intercalation reaction and the “opening” effect. The asphalt emulsion could promote the formation of mesoporous hydrated calcium silicate and decreased the number of mesopores in CSH gel but had little effects on the macroporous and microporous structure of CSH. The calculation results of the FHH model showed that the fractal characteristics between CSH and EACSH were different. The emulsifier may adsorb CSH gels result in globular accumulation state.

中文翻译：

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沥青乳液对水合硅酸钙凝胶的影响：形貌和孔隙率

本文采用Na ₂ SiO ₃ •9H ₂ O，Ca（NO ₃）₂ •4H ₂ O，NaOH，去离子水和Na ₂ SiO ₃ •9H ₂ O合成了水合硅酸钙（CSH）凝胶和掺有沥青乳液的硅酸钙水合物（EACSH）。阴离子沥青乳液。N ₂等温吸附，X射线衍射（XRD）和扫描电子显微镜（SEM）用于研究沥青乳液对CSH形态和孔隙率的影响。Frenkel–Halsey–Hill（FHH）模型用于分析表面分形特征。结果表明，沥青乳液对比表面积的变化和CSH凝胶微孔分布的影响很小，这可能与无插层反应和“开放”效应有关。沥青乳液可以促进介孔水合硅酸钙的形成，并减少CSH凝胶中介孔的数量，但对CSH的大孔和微孔结构影响很小。FHH模型的计算结果表明，CSH和EACSH之间的分形特征是不同的。