𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Calorimetric determination of the effect of additives on cement hydration process

✍ Scribed by Šiler, Pavel; Krátký, Josef; Kolářová, Iva; Havlica, Jaromír; Brandštetr, Jiří

Book ID
119932377
Publisher
Versita
Year
2013
Tongue
English
Weight
362 KB
Volume
67
Category
Article
ISSN
0366-6352

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Possibilities of a multicell isoperibolic-semiadiabatic calorimeter application for the measurement of hydration heat and maximum temperature reached in mixtures of various compositions during their setting and early stages of hardening are presented. Measurements were aimed to determine the impact of selected components’ content on the course of ordinary Portland cement (OPC) hydration. The following components were selected for the determination of the hydration behaviour in mixtures: very finely ground granulated blast furnace slag (GBFS), silica fume (microsilica, SF), finely ground quartz sand (FGQ), and calcined bauxite (CB). A commercial polycarboxylate type superplasticizer was also added to the selected mixtures. All maximum temperatures measured for selected mineral components were lower than that reached for cement. The maximum temperature increased with the decreasing amount of components in the mixture for all components except for silica fume. For all components, except for CB, the values of total released heat were higher than those for pure Portland cement samples.

📜 SIMILAR VOLUMES

Conduction calorimetric studies of the e
Conduction calorimetric studies of the effect of sulphate on the hydration reactions of Portland cement
✍ M.A. Smith; J.D. Matthews 📂 Article 📅 1974 🏛 Elsevier Science 🌐 English ⚖ 510 KB

Conduction calorimetry has been used to study the patterns of early heat evolution during the hydration of Portland cement. In particular, the effect of sulphate on the rate of heat liberation has been investigated with reference to the differences observed depending on whether the sulphate is prese

Effect of gluconates on the hydration of
Effect of gluconates on the hydration of cement
✍ N.B. Singh 📂 Article 📅 1976 🏛 Elsevier Science 🌐 English ⚖ 276 KB

The effect of various gluconates on the hydration of portland cement has been studied employing isothermal microcalorimetry, x-ray diffraction and differential thermal analyses. The results indicate that gluconates act as retarders as follows: Sodium gluconate > Potassium gluconate > Magnesium gluco