𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Mechanochemical activation of high alumina cements — hydration and thermomechanic behaviour. II

✍ Scribed by A.N. Scian; E. Pereira

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
586 KB
Volume
24
Category
Article
ISSN
0008-8846

No coin nor oath required. For personal study only.

✦ Synopsis

The study about the hydraulic behaviour of the CA25 and the mechanochemical activated CA25 cements started in Part 1 is completed. The hydration anomalies are studied through the analysis of the AI +3 and Ca +2 ions in solution at the end of the solubilization period. With this purpose a non-conventional analysis technique has been developed. The thermomechanical behaviour of concretes made with both the original and the activated cements are analysed, understanding its performance through their microstructure and texture. The observed differences are correlated with the proposed interpretation for the hydration of these kind of cements.

📜 SIMILAR VOLUMES

Microanalysis of high-alumina cement cli
Microanalysis of high-alumina cement clinker and hydrated HAC/SLAG mixtures
✍ D.L. Rayment; A.J. Majumdar 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 597 KB

Typical chemical compositions of monocalcium aluminate (CA\*), dicalcium silicate (C,S), the ferrite phase and of pleochroite present in HAC clinker have been determined by electron probe microanalysis. The composition of stratlingite (C2ASH 8) present in five year old concrete samples prepared from

The chemistry of hydration of high alumi
The chemistry of hydration of high alumina cement in the presence of accelerating and retarding admixtures
✍ S.A. Rodger; D.D. Double 📂 Article 📅 1984 🏛 Elsevier Science 🌐 English ⚖ 723 KB

The effect of accelerators, and in particular lithium salts and citric acid solutions, on the setting time of high alumina cement has been studied using calorimetry, solution analysis and X-ray diffraction techniques. Results are discussed with respect to the ternary CaO-AI203-H20 solubility diagram

Expansion characteristics of a compounde
Expansion characteristics of a compounded-expansive additive and pre-hydrated high alumina cement based expansive additive
✍ Yan Fu; Jian Ding; J.J. Beaudoin 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 732 KB

The expansion characteristics of a newly developed compoundedexpansive additive (CEA) and a pre-hydrated high alumina cement based particulate expansive additive are reported. Effect of temperature during pre-hydration and drying of high alumina cement is studied. The quick setting mechanism and vol

Study of stabilized phases in high alumi
Study of stabilized phases in high alumina cement mortars part II effect of CaCO3 added to high alumina cement mortar subjected to elevated temperature curing and carbonation
✍ M. Pérez; T. Vázquez; F. Triviño 📂 Article 📅 1984 🏛 Elsevier Science 🌐 English ⚖ 476 KB

The effects of adding ground limestone to high alumina cement mortar were studied. The hydration was c~ed out at 60°0 to form the cubic hydrate C AM directly, hence avoiding the conversion of CAM to o I O3AM6, an~ a~ 20 C, Other experiments involved subsequent carbonation with CO 2 an~ thermal ~reat

Hydration and hydraulic properties of th
Hydration and hydraulic properties of the Q phase in the system CaOAl2O3MgOH2O referred to high alumina cements
✍ I. Kaprálik; L. Stevula; F. Hanic 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 429 KB

Hydration and hydraulic properties of the quaternary phase Q = C20A13M~S 3 were investigated. The phase is located in the subsystem C2S-CA-C~AT-M~) ih th~ z-one of the variable mineral composition of high alumina cern~nts (HACk. Relations between the composition of the Q phase and the phase composit