Sodium aluminate (NaAlO2) can be used to accelerate hydration of Portland cements. Here, we compare the use of NaAlO2 solutions with deionized water on the hydration of Al‐doped β‐C2S. The...

2019年12月20日 · To track the structural changes during hydration, scanning electron microscopy (SEM) has been carried out which shows the formation of fiber-like morphologies, indicative of early-stage formation of C–S–H for the nanosilica-incorporated samples.

Scanning electron microscope coupled with an energy dispersive spectrometer (SEM-EDS) was used to investigate the morphologies of the carbonation products within the prepared compacts. Specifically, the FEI QUANTA FEG 450 ESEM with a backscattered electron (BSE) detector was used, operating at an accelerating voltage of 10 kV.

结果表明:γ-C_2S和β-C_2S的碳化产物主要是方解石和少量的球霰石,γ-C_2S碳化后还有少量的文石生成,并且γ-C_2S的碳化活性略高;在140℃时,γ-C_2S的水化活性较β-C_2S低很多,当温度升高到200℃时,γ-C_2S的水化活性大幅提升,β-C_2S的水化活性也有一定提升,两者的水化活性差距显著缩小。 γ-C2S basically have slow hydration activity,but β-C2S have relatively high hydration activity at room temperature and atmosphere pressure.

2024年5月15日 · Hence, for the first time, C2 S (2P 6)C 2S/Sr 3D-scaffolds were fabricated by sol-gel method and their characterization (X-Ray diffraction analysis (XRD), scanning electron microscopy (SEM) and Mercury Porosimetry), effect in MSCs proliferation (cytotoxicity and mRNA expression) and osteogenic differentiation (staining and mRNA expression) were ...

2024年1月19日 · By examining common crystalline forms of C2 S (γ-C 2 S and β-C 2S) through microindentation plastometry (MIP), scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDS), thermogravimetry and differential thermogravimetry (TG-DTG), and 29 Si magic angle spinning (MAS) nuclear magnetic resonance (NMR), the physical and ...

In this study, we elucidated the differential expression pattern of messenger RNAs (mRNAs) and circular RNAs (circRNAs) in C2S-treated MSCs and their involvement in the osteogenesis process.

Download scientific diagram | SEM, XRD, and FT-IR pattern of synthesized C2S from publication: Dicalcium silicate hydration behavior in the presence of Na2CO3 and water glass | This study...

2021年11月4日 · 为了实现低碳水泥的工业化生产与应用，近年来通过提高或引入硅酸二钙（C2S）矿物以开发新的低碳水泥体系，如高贝利特水泥、贝利特硫铝酸盐水泥等，已经成为很多国内外学者关注的热点 [4-5]。 因此，研究 C2S 的基础性能对开发新的节能低碳水泥有一定的借鉴意义。 C2S 共存在α、αH’、αL’、β、γ5 种晶型，其中，前 4种晶型均为高温稳定相，只能在较高温度或其他方法稳定晶型的条件下才能存在 [6]。 γ-C2S 可在常温下稳定存在。 根据热力学相 …

Besides, the microstructure and type of silicate tetrahedron and mean chain length (MCL) were studied by scanning electron microscopy (SEM) and 29Si magic-angle-spinning (MAS) NMR, respectively. The main results showed that the chemical compositions for the C–S–H gels have a CaO/SiO2 M ratio almost constant of 1.7 for both C3S and C2S compounds.