✦ LIBER ✦

Phenomenological approach to the role of C3A in the hardening of portland cement pastes

✍ Scribed by Sandor Popovics

Publisher: Elsevier Science
Year: 1976
Tongue: English
Weight: 445 KB
Volume: 6
Category: Article
ISSN: 0008-8846
DOI: 10.1016/0008-8846(76)90096-x

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

The composition of the C-S-H phases in p

The composition of the C-S-H phases in portland cement pastes

✍ D.L. Rayment; A.J. Majumdar 📂 Article 📅 1982 🏛 Elsevier Science 🌐 English ⚖ 718 KB

The composition of the calcium silicate hydrate (C-S-H) present in Portland cement pastes from eight days to five years old, and in concrete samples ten years old, has been determined by electron probe mlcro-analysis. The dependence of C-S-H composition on water/cement ratios has also been studied.

A review of the mechanisms of set-retard

A review of the mechanisms of set-retardation in portland cement pastes containing organic admixtures

✍ J.F. Young 📂 Article 📅 1972 🏛 Elsevier Science 🌐 English ⚖ 951 KB

Various mechanisms have been proposed to explain how organic admixtures affect the hydration of cement clinker compounds. These are reviewed and discussed critically. Complex formation between the organic compounds and aluminate or silicate ions may enhance the initial reactivity of the anhydrous co

The role of Ca(OH)2 in the breakdown of

The role of Ca(OH)2 in the breakdown of Portland cement concrete due to alkali-silica reaction

✍ S. Chatterji 📂 Article 📅 1979 🏛 Elsevier Science 🌐 English ⚖ 262 KB

Both field observations and subsequent laboratory experiments showed that the presence of free Ca(OH)~ is a necessary condition for the breakdown of a PortlaHd cement concrete structure due to the destructive alkali-silica reaction. The complete removal of free Ca(OH) 2 either by leaching with a con

The hydration of Portland cement, C3S an

The hydration of Portland cement, C3S and C2S in the presence of a calcium complexing admixture (EDTA)

✍ N.L. Thomas; D.D. Double 📂 Article 📅 1983 🏛 Elsevier Science 🌐 English ⚖ 625 KB

The effect of EDTA, a calcium chelating agent, on the early hydration of Portland cement, C3Sand B-C2S has been studied by solution analysis and electron microscopy. EDTA is a retarder of cement hydration. Under normal conditions of hydration, the silica levels in solution are very low (<0.05 raM) b

A reply to discussion by Z. P. Bazant of

A reply to discussion by Z. P. Bazant of the paper “Drying shrinkage of portland cement pastes I. Microcracking during drying”

✍ C.-L. Hwang; J.F. Young 📂 Article 📅 1985 🏛 Elsevier Science 🌐 English ⚖ 116 KB

Professor Bazant's concerns regarding the estimation of unrestrained drying shrinkage values for cement paste must be resolved if such values are to be used in the prediction of concrete shrinkage. We are in full agreement with regard to his statements about concrete. The presence of rigid, nonshrin

An electrical conductivity method for me

An electrical conductivity method for measuring the effects of additives on effective diffusivities in portland cement pastes

✍ Aye Aye Kyi; Bill Batchelor 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 695 KB

Effective diffusivities are important in describing corrosion and leaching of contaminants in cementitious systems. An electrical conductivity procedure has been used to measure the effective diffusivities of compounds in cementitious systems containing the additives fly ash, silica fume, sodium sil