𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Studies of strength mechanism in newly developed chemically bonded ceramics in the system CaOSiO2P2O5H2O

✍ Scribed by Jiashan Hu; D.K. Agrawal; R. Roy

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
517 KB
Volume
18
Category
Article
ISSN
0008-8846

No coin nor oath required. For personal study only.

✦ Synopsis

Strength data are presented on totally new room temperature setting cements in CaO-SiO2-P2Os-I-I20 system. These compositions lie in the range of CAO:45-65, P2Os:29-5ff, SiO-2:4-20 (wt.%) and were prepared by sol-gel techniques ufmgcalcium nitrate and lactate, phosphoric acid and Ludox as precursors. Pressed pellets of the calcined powders were hydrated for times ranging from 1 day to 90 days at room temperature, 85 ° and 100°C. Typical values of splitting tensile strength near 15 MPa were common at room temperature, and 28 MPa at 100°C; maximum strengths of 31 MPA were achieved at 100°C for 1 day of hydration in some compositions.

📜 SIMILAR VOLUMES

Study of the system CaOSiO2CO2H2O in
Study of the system CaOSiO2CO2H2O in relation to scawtite under hydrothermal conditions
✍ I. Kaprálik; L. Števula; J. Petrovič; F. Hanic 📂 Article 📅 1984 🏛 Elsevier Science 🌐 English ⚖ 368 KB

Hydrothermal studies showed the location of scawtite in the narrow internal tetrahedron foshagite-xonotlite-CO2-H20 of the system CaO-SiO2-C02-H20 and its compatibility with the calcium silicate hydrates in the 4-phase assemblages. The phase assemblages in this region involve scawtite, foshagite, xo

Tobermorite formation in the system CaO,
Tobermorite formation in the system CaO, C3SSiO2Al2O3NaOHH2O under hydrothermal conditions
✍ R. Gabrovšek; B. Kurbus; D. Mueller; W. Wieker 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 368 KB

## Tobermorite formation was studied in the system C; C3S-S-A-N-H in suspension at 180°C. Tobermorites forw~d were ~vestigated by the molybdate method and by ='AI and ~Si MAS NMR with a purpose to evaluate the influence of aluminum and sodium ions on the changes of secondary arrangements of basic

The role of sulphates in cement clinkeri
The role of sulphates in cement clinkering reactions: phase formation in the system CaOAℓ2O3Fe2O3SiO2CaSO4K2SO4
✍ Y.B. Pliego-Cuervo; F.P. Glasser 📂 Article 📅 1979 🏛 Elsevier Science 🌐 English ⚖ 521 KB

The CaO-rich portions of the systems CaO-A~203-SiO2-K2SO,, CaO-AC203-K2SO,-CaSO,, CaO-A~203-SiO2-K2SO,-CaSO, and CaO-A~203-Fe203-CaSO,-K2SO, have been studied experimentally. Schemes are presented showing phase assemblages compatible at subsolidus temperatures. Melting commences at about 825°C in as

Relationship between raw mixture and min
Relationship between raw mixture and mineralogical composition of sulphoaluminate belite clinkers in the system CaOSiO2Al2O3Fe2O3SO3
✍ J. Majling; S. Sahu; M. Vlna; Della M. Roy 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 258 KB

The mineralogical (phase) composition of sulphoaluminate belite cement clinkers was calculated using phase compatibility data of the relevant portion of the five component oxide system CaO-SiO2-A1203-Fe203-SO 3 and was plotted in the plane of three component raw mix. In result a phase fields map (PF

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