Skip to main content

Observation of time-dependent hydration reaction by X-ray diffractometry

AppNote XRD1141: Observation of time-dependent hydration reaction by X-ray diffractometry


Cement reacts with water to form hydrates, which gradually condense and harden. This hardening is caused when the formed hydrates coat cement particles and bind them together. A detailed understanding of the hydrate formation process is expected to lead to the elucidation of the mechanism of condensation and hardening. Since the X-ray diffraction method is a powerful analytical technique for crystalline phase identification, it can identify crystalline hydrates such as ettringite and monosulfate in cements. In this analysis example, we observed changes in the crystalline phase of ordinary Portland cement over time with a water cement ratio (W/C) of 25%.

XRD products from Rigaku

Advanced state-of-the-art high-resolution XRD system powered by Guidance expert system software

Highly versatile multipurpose X-ray diffractometer with built-in intelligent guidance

New 6th-generation general purpose benchtop XRD system for phase i.d and phase quantification

Compact X-ray diffractometer for quality control of materials that is easy to use and is ideal for routine work

Laboratory micro-spot XRD residual stress analysis with both iso- and side-inclination methods

Windows®-based software suite for Rigaku's X-ray diffractometers

high energy resolution pixel detector capable of 0, 1, and 2D measurements

2D X-ray detector with latest semiconductor technology designed for home lab diffractometers