✦ LIBER ✦

Properties of portland cement-silica fume pastes I. Porosity and surface properties

✍ Scribed by R.F. Feldman; Huang Cheng-Yi

Publisher: Elsevier Science
Year: 1985
Tongue: English
Weight: 505 KB
Volume: 15
Category: Article
ISSN: 0008-8846
DOI: 10.1016/0008-8846(85)90141-3

No coin nor oath required. For personal study only.

✦ Synopsis

Properties such as porosity, pore-slze distribution, surface area and drying shrinkage are determined for silica fume-portland cement blends (0-30% silica fume) cured from I to 180 days at w/(c+sf) of 0.25 and 0.45. Porosity was measured by helium, mercury and water techniques. It is shown that in paste blends a discontinuous pore structure is formed after as little as seven days of curing due to reaction of Ca(OH) 2 with silica fume. The pores are not so large as those in mortars owing to the lack of interface effects.

Total porosities of the blends can only be measured by a water technique, whereas for plain cement pastes other techniques are applicable.

📜 SIMILAR VOLUMES

Hardened portland cement pastes of low p

Hardened portland cement pastes of low porosity I. Materials and experimental methods

✍ Marvin Yudenfreund; Ivan Odler; Stephen Brunauer 📂 Article 📅 1972 🏛 Elsevier Science 🌐 English ⚖ 889 KB

Hardened portland cement pastes of low p

Hardened portland cement pastes of low porosity IV. Surface area and pore structure

✍ Ivan Odler; Julius Hagymassy Jr.; Edward E. Bodor; Marvin Yudenfreund; Stephen B 📂 Article 📅 1972 🏛 Elsevier Science 🌐 English ⚖ 712 KB

On the properties of freshly made Portla

On the properties of freshly made Portland cement paste. Part I. Origins of the colloidal behaviour of cement paste

✍ S. Chatterji 📂 Article 📅 1986 🏛 Elsevier Science 🌐 English ⚖ 212 KB

A freshly made Portland cement paste is a very unusual fluid. It behaves like a colloidal suspension, although cement particles are much coarser than conventional colloid size. The origins of this colloidal behaviour of a cement paste have been traced to high density and high viscosity of the paste

Studies on water and nitrogen adsorption

Studies on water and nitrogen adsorption on hardened cement pastes I development of surface in low porosity pastes

✍ R.Sh. Mikhail; S.A. Abo-El-Enein 📂 Article 📅 1972 🏛 Elsevier Science 🌐 English ⚖ 755 KB

Comparison of mechanical properties of c

Comparison of mechanical properties of compacted calcium hydroxide and portland cement paste systems

✍ J.J. Beaudoin 📂 Article 📅 1983 🏛 Elsevier Science 🌐 English ⚖ 299 KB

Mechanical properties of Ca(OH) 2 are compared with those of portland cement paste at different por?slties. Intrinsic values of modulus of elasticity (E) and mlcrohardness (H) for Ca(OH) 2 compacts were obtained by extrapolatlng to zero porosity log E and log H versus porosity curves. The values for

Effect of some liquefying agents on prop

Effect of some liquefying agents on properties and hydration of portland cement and tricalcium silicate pastes

✍ I. Odler; Th. Becker 📂 Article 📅 1980 🏛 Elsevier Science 🌐 English ⚖ 594 KB

The effect of a melamine sulfonate resin, anaphthalene sulfonate resin and a sulfonated lignin on the rheological properties and the hydration of portland cement and tricalcium silicate pastes was studied. In addition to improving the flow properties of the pastes all three substances retarded the h