✦ LIBER ✦

Surface area and pore structure of hydrothermal reaction products of granulated blast furnace slag

✍ Scribed by S.A. Abo-El-Enein; R.Sh. Mikhail; M. Daimon; R. Kondo

Publisher: Elsevier Science
Year: 1978
Tongue: English
Weight: 612 KB
Volume: 8
Category: Article
ISSN: 0008-8846
DOI: 10.1016/0008-8846(78)90003-0

No coin nor oath required. For personal study only.

✦ Synopsis

Specific surface areas and pore structure studies were carried out on autoclaved slag-lime and slag-quartz-lime pastes. Autoclaving temperatures were 181 and 213°C. Water and nitrogen adsorption isotherms were measured and their results are comparatively discussed. The specific surface areas measured by water were appreciably higher than the nitrogen surface areas, whereas the total pore volumes measured by water were found to be smaller. A probable explanation was given to this unexpected behaviour, based mainly on the interaction between the polar water molecule and the ionic surface, which takes place in a pore structure with narrower entrance way than inside pore size. This interaction might interfere with the further adsorption, blocking the entrances to further capillary condensation of water vapour.

📜 SIMILAR VOLUMES

Hardened portland blast-furnace slag cem

Hardened portland blast-furnace slag cement pastes: I. Effects of additives on surface area and on pore structure

✍ R.Sh. Mikhail; W.E. Mourad; V.K. Gouda 📂 Article 📅 1974 🏛 Elsevier Science 🌐 English ⚖ 672 KB

Portland blast-furnace slag cement pastes were prepared with various water/cement ratios. Specific surface areas and pore structures of the hardened pastes were investigated by nitrogen adsorption. The "accessibility" of the nitrogen molecules to the pore structure is discussed in terms of degree of

A discussion of the paper “air entrainme

A discussion of the paper “air entrainment in portland blast furnace slag cement pastes: Effects on strength and pore structure” by R. Sh. Mikhail, A. M. Youssef and M. Shater

✍ Bryant Mather 📂 Article 📅 1978 🏛 Elsevier Science 🌐 English ⚖ 103 KB

The paper by Mikhail et al. was of especial interest to me since it extends work that I had some connection with previously (Mather 1957). I was, however, confused by certain aspects of the paper and hope that they may be clarified. Beginning with the "Introduction" the authors cite work by Burba,