Journal ArticleDOI
Microstructural study of sulfate attack on ordinary and limestone portland cements at ambient temperature
TLDR
In this article, an investigation on the mechanism of sulfate attack on Portland cements (PCs) containing limestone filler is presented based on the analysis of microstructure and composition of mortar specimens (ASTM C 1012) stored for 2 years in sodium sulfate solution.About:
This article is published in Cement and Concrete Research.The article was published on 2003-01-01. It has received 181 citations till now. The article focuses on the topics: Ettringite & Portland cement.read more
Citations
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Journal ArticleDOI
Durability of concrete exposed to leaching and external sulphate attacks
TL;DR: In this paper, a leaching and external sulphate attack on concrete lead to dissolution of hydration products, mainly portlandite, and in case of ingress of sulphate ions to formation of expansive products such as gypsum and ettringite.
Journal ArticleDOI
Physical and microstructural aspects of sulfate attack on ordinary and limestone blended Portland cements
TL;DR: In this article, the consequences of external sulfate attack were investigated by traditional test methods, including length and mass change, as well as by a newly developed, surface sensitive ultrasonic method, using Leaky Rayleigh waves (1 MHz).
Journal ArticleDOI
Mechanism of expansion of mortars immersed in sodium sulfate solutions
TL;DR: In this paper, a refinement of the crystallization pressure hypothesis was proposed to explain sulfate related expansion, and it was shown that expansion is related to the transformation of monosulfate crystals embedded in the C-S-H to ettringite.
Journal ArticleDOI
Sulfate attack on cementitious materials containing limestone filler — A review
TL;DR: In this paper, a conceptual graphical analysis is proposed to relate the degree of surface deterioration and mineralogical composition of attacked surface to the main variables of external sulfate attack: water/cementitious material ratio, limestone content and C 3 A content of the cement.
Journal ArticleDOI
Biochemical attack on concrete in wastewater applications: A state of the art review
TL;DR: In this paper, the authors present a review of the literature, outlining the various research approaches undertaken in an effort to address this problem, and the different strategies employed are compiled and discussed.
References
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Book
The chemistry of cement and concrete
TL;DR: The chemistry of cement and concrete as discussed by the authors, The chemistry of concrete and its properties, and the relationship between concrete and cement, is a classic example of such an approach. But it is not suitable for outdoor use.
Journal ArticleDOI
Studies on the carboaluminate formation in limestone filler-blended cements
TL;DR: In this paper, a study about the hydration of pure C3A phase with CaCO3 in the presence or not of gypsum and in a calcium hydroxide solution is related to hydration products of portland and limestone-blended cements.
Journal ArticleDOI
Mechanism of sulfate attack on portland cement concrete — Another look
TL;DR: The chemical phenomenon of ettringite formation as a result of reaction between sulfate water and hydration products of portland cement does not adequately explain all the physical manifestations of the sulfate attack as discussed by the authors.
Journal ArticleDOI
Microstructural and microanalytical studies of sulfate attack. I. Ordinary portland cement paste
R.S. Gollop,H.F.W. Taylor +1 more
TL;DR: In this paper, a sample of Portland cement pastes that had been stored for 6 months in solutions of sodium or magnesium sulfate was examined by scanning electron microscopy using backscattered electron imaging and X-ray microanalysis.
Journal ArticleDOI
Thaumasite formation in Portland-limestone cement pastes
TL;DR: In this article, small cylinders made at a water:solids ratio of 0.5 from Portland cement with 0, 5, 15, and 30% limestone additions were cured in water at room temperature for 28 days.