The compatibility of three nano-montmorillonite (NMt) dispersions in hydrating cement binders was investigated and a new theory linking the nanostructure of nanoclay dispersions to their effect on the macroscale performance of cement pastes is presented. Two aqueous organomodified NMt dispersions (one dispersed with non-ionic fatty alcohol and the other with anionic alkyl aryl sulfonate) and one aqueous inorganic NMt dispersion (dispersed with sodium tripolyphosphate) were characterized via transmission electron microscopy imaging and crystallography, X-ray diffraction, Scanning electron microscopy/X-ray energy dispersive spectroscopy, and thermogravimetric analysis/differential thermogravimetry. With this characterization protocol, the way carbon loading and surfactants interact with the nanostructure of the nanoclay dispersions in light of their addition in composite cements was clarified. The suggested methodology is suited for the characterization of nanoclay dispersions and the new theory developed will open up a new horizon for the understanding and exploitation of nano-montmorillonite as a supplementary cementitious material.

研究了三种纳米蒙脱土（NMt）分散体在水合水泥粘合剂中的相容性，并提出了一种新理论，将纳米粘土分散体的纳米结构与其对水泥浆的宏观性能的影响联系起来。通过透射电子显微镜成像和晶体学，X射线衍射，X射线衍射分析了两种有机改性NMt水性分散液（一种分散于非离子脂肪醇中，另一种分散于阴离子烷基芳基磺酸盐）和一种无机NMt水性分散液（经三聚磷酸钠分散）。扫描电子显微镜/ X射线能量色散光谱，以及热重分析/差示热重分析。使用此表征协议，阐明了碳负载量和表面活性剂与纳米粘土分散体的纳米结构相互作用的方式（鉴于它们在复合水泥中的添加）。所提出的方法学适合于表征纳米粘土分散体，并且开发的新理论将为理解和开发纳米蒙脱石作为辅助胶结材料开辟新的视野。