Journal ArticleDOI
The AFm phase in Portland cement
Reads0
Chats0
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
More filters
Journal ArticleDOI
Effects of sodium nitrate and OPC-GGBS concrete mix composition on phase transition of pore water at subzero temperatures
TL;DR: In this paper , the formation of ice was examined for various pastes and concretes of OPC-GGBS based, while exposed to a constant temperature of −15 °C. The ice formation and its effects on the binder matrix microstructure was studied using differential scanning calorimetry (DSC), ultrasonic pulse velocity (UPV) and Scanning Electron Microscopy- Energy Dispersive Spectrometry (SEM-EDS).
Journal ArticleDOI
Chemical transformation behavior of cement hydrates deteriorated by low concentration acid
TL;DR: In this paper, the authors present pH1.1.5, pH2.1, pH3.5, pH4.1, pH5.5 and pH6.
Journal ArticleDOI
Sea Sand Concrete Chloride Ion Diffusion and Combination of Curing
TL;DR: In this article, the 28 days of age in sea sand Mohr method was used to evaluate the sea sand for ordinary concrete and fly ash concrete microstructure and mineral composition, and determined the different types of water-soluble chloride ion concentration to the chloride ion binding characteristics in the study of sea sand in concrete.
Journal ArticleDOI
Durability of eco-efficient binary cement mortars based on ichu ash: Effect on carbonation and chloride resistance
TL;DR: In this article , the performance of mortars containing ichu ash as a potential environmentally sound alternative to traditional pozzolans (at 6% and 10% replacement levels) under CO 2 and chloride ion rich environments, in order to evaluate the capacity of this material to produce more sustainable and durable blended cements.
References
More filters
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.