2017年4月24日 · Based on X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscope (SEM) analyses, we deduce that the use of HRW in Portland cement mortars produces a more compact, dense, and durable microstructure with fewer voids due to a higher degree of hydration.

Geopolymer mortars showed higher resistance to the HCl and magnesium sulfate compared to cement mortar. XRD and EDX analyses showed enhanced formations of Si-O-Si and C-A-S-H bonds in GGBS ...

2024年12月2日 · The current study aimed to examine the effects of minimal doses of NT particles on white Portland cement via XRD coupled with Rietveld and VESTA software to analyze the crystal structure behavior at the atomic and nanolevels in WPC mortar.

2010年4月1日 · This paper reports the first application of XRD-CT to cementitious materials combined with X-μCT. The aims of the present study were to assess the feasibility of scanning tomography with a powder diffraction-based contrast on complex heterogeneous systems such as mortar and cement samples.

2024年7月24日 · X-ray diffraction (XRD): To identify the crystalline phases present in the TiO 2-doped OPC mortar, a Rigaku Ultima IV diffractometer operating at 40 kV and 30 mA with Cu Kα radiation (wavelength of 1.541 Å) was used.

As a result of the dry density and compressive strength results, it was determined that the mixture containing 25% waste PET is considered as a lightweight mortar and suitable for structural...

2023年2月15日 · XRD ex-situ requires many samples to obtain an evolution curve, with several steps involving stopping the hydration reaction and using the TGA technique, but it delivers reliable phase composition values that are similar to those reported in the literature.

X-ray powder diffraction (XRD) has been used for several decades to identify and measure the mass fractions of various crystalline phases in portland cement. More recently, a combination of scanning electron microscopy with X-ray microanalysis (SEM/XMA) and

Results showed that the cement-free mortar samples with fly ash had the more superior long-term mechanical properties (i.e. flexural and compressive strengths and volumetric compaction via...

2022年8月1日 · Aiming to reduce the environmental impact of ordinary Portland cement (OPC) production and to improve specific concrete properties, several types of supplementary cementitious materials (SCMs) can be blended with cement. These materials (e.g., fly ash, metakaolin, and granulated blast furnace slag) contain high amorphous contents [1].