Journal ArticleDOI
The AFm phase in Portland cement
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TLDR
In this article, a scheme of phase balances was proposed to calculate the mineralogical balances of a hydrated cement paste with greater accuracy than hitherto practicable, and experimentally-determined phase relationships were depicted at 25 deg. C.About:
This article is published in Cement and Concrete Research.The article was published on 2007-02-01. It has received 604 citations till now. The article focuses on the topics: AFm phase & Portlandite.read more
Citations
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Performance decay analysis of cementitious composite cladding structure under stochastic aging
TL;DR: In this paper , a computational approach, fusing together a novel physics-based stochastic aging model and phase field fracture model, is developed to assess the mechanical performance decay of aging cladding structure.
Journal ArticleDOI
Carbon Storage in Portland Cement Mortar: Influences of Hydration Stage, Carbonation Time and Aggregate Characteristics
TL;DR: In this paper, the effects of the particle size, carbonation time, curing time and pressure on the efficiency of carbon storage in Portland cement mortar were investigated using pressure chamber experiments.
Diagnosis on Expansion of Heat-Cured Precast Concrete Blocks Due to Delayed Ettringite Formation in Japan
TL;DR: In this article, a diagnosis on precast concrete blocks suspected of experiencing delayed ettringite formation (DEF) was carried out, where the concrete blocks were made of white Portland cement, limestone gravel, and limestone sand mixed with copper slag.
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Working mechanism of calcium nitrate as an accelerator for Portland cement hydration
TL;DR: In this paper , the influence of calcium nitrate (Ca(NO3)2) on early cement hydration was investigated and it was found that the increased Ca concentration in solution accelerated the formation of ettringite and a nitrate-containing AFm phase.
References
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ReportDOI
User's guide to PHREEQC (Version 2)-a computer program for speciation, batch-reaction, one-dimensional transport, and inverse geochemical calculations
David L. Parkhurst,C.A.J. Appelo +1 more
TL;DR: PHREEQC as discussed by the authors is a C program written in the C programming language that is designed to perform a wide variety of low-temperature aqueous geochemical calculations.
Journal ArticleDOI
The Role of Calcium Carbonate in Cement Hydration
TL;DR: In this paper, it is shown by experiment and calculation that much, if not all, of this calcite is reactive and affects the distribution of lime, alumina and sulfate and thereby alters the mineralogy of hydrated cement pastes.
Journal ArticleDOI
Thermodynamic modelling of the hydration of Portland cement
TL;DR: In this paper, a thermodynamic model is developed and applied to calculate the composition of the pore solution and the hydrate assemblage during the hydration of an OPC.
Journal ArticleDOI
Nagra/PSI Chemical Thermodynamic Data Base 01/01
TL;DR: The Nagra/PSI Chemical Thermodynamic Data Base has been updated to support performance assessments of the planned Swiss repositories for radioactive waste as discussed by the authors, and more than 70% of the database contents have been revised.
Journal ArticleDOI
Thermodynamic investigation of the CaOAl2O3CaSO4H2O system at 25°C and the influence of Na2O
D. Damidot,F.P. Glasser +1 more
TL;DR: In this article, the CaOAl2O3CaSO4H2O system at 25°C has been investigated by calculations on the equilibrium solubility surfaces of AH3, C3AH6, CH, C 6 A S 3 H x, C 4 A S H x and gypsum.