Hydration process of cement in the presence of a cellulosic additive. A calorimetric investigation

Article Abstract:

The effect of four additives constituting a typical Portland cement on the hydration kinetics is evaluated by means of differential scanning calorimetry (DSC) while the hydration products are studied. The additive inhibits the growth of stable cubic hydrated phases (C3AH6), with the advantage of the metastable hexagonal phases being formed in the earliest minutes of hydration.

Italy, Cement, hydraulic, Cement Manufacturing, Portland Cement, Observations, Hydration (Chemistry)

---

Near-infrared spectroscopy investigation of the water confined in tricalcium silicate pastes

Article Abstract:

Near-infrared (NIR) spectroscopy is used to investigate the evolution of the vibrational spectrum of water entrapped in a tricalcium in a tricalcium silicate paste. The NIR analysis of water in the confined C-S-H growing matrix during the setting process has provided reliable semiquantitative information on the water confined in the [C.sub.3]S paste.

Calcium & Compounds, Near infrared spectroscopy, Water chemistry, Calcium compounds

---

Hydration kinetics of tri-calcium silicate in the presence of superplasticizers

Article Abstract:

The experiment is conducted using the Differential Scanning Calorimetry (DSC) to study the hydration kinetics of tri-calcium silicate (C3S) in the presence of superplasticizers. The results show that the activation energy of the nucleation and growth stage is doubled in the presence of superplasticizers, which are the most effective additives.

Industrial inorganic chemicals, not elsewhere classified, Calcium Silicate, Superplasticity

Similar abstracts:

• Abstracts: Reaction pathways of acetylene on Pd/W(211): a TPD and HREELS investigation. Ionization and solvation of CsCl interacting with solid water
• Abstracts: Characterization of methyl viologen in the channels of zeolite L. Orientation of fluorescent dyes in the nano channels of zeolite L
• Abstracts: Adsorption properties of C10E8 at the water-hexane interface. Dynamic elasticity of adsorption layers in the presence of internal reorientation processes
• Abstracts: Surface modification of carbon nanofiber with high degree of graphitization. Characterization and modeling of the nonfaradaic response of ultrahigh surface area carbon fibers by electrochemical flow injection analysis
• Abstracts: Dynamics of n-hexane inside silicalite, as studied by (super 2)H NMR:. Probe molecule kinetic studies of adsorption on MCM-41

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.