Topic
Ettringite
About: Ettringite is a research topic. Over the lifetime, 2702 publications have been published within this topic receiving 67056 citations. The topic is also known as: woodfordite.
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TL;DR: In this article, a two-stage process for the removal of sulfate from a nano-filtration (NF) reject stream was proposed and the results indicated that the removal kinetics is not a limiting factor for the practicability of the process.
46 citations
TL;DR: In this paper, phase characterizations, physical properties and strength of environment-friendly cold-bonded fly ash lightweight aggregates were investigated using thermogravimetry results.
46 citations
TL;DR: Oil shale ash wastes are considered as the biggest pollution sources in Estonia and thus determining the composition and properties of oil shale ash sediment are important to assess its environmental implications and also its possible reusability.
46 citations
TL;DR: In this article, the effects of lithium carbonate on the properties of dual liquid high water material have been studied through micro testing, including hydration heat tests, X-ray diffraction, scanning electron microscopy, and thermogravimetric analysis.
46 citations
TL;DR: In this paper, the time-dependent relation between phase development and flow behavior of cement paste was investigated at two different temperatures (20 and 30 °C) over a period of two hours.
Abstract: In order to gain a deeper understanding of the rheological development of hydrating ordinary Portland cement (OPC) pastes at initial state, and to better understand their underlying processes, quantitative X-ray diffraction (XRD) analysis and rheological measurements were conducted and their results combined. The time-dependent relation between phase development and flow behavior of cement paste was investigated at two different temperatures (20 and 30 °C), over a period of two hours. Regarding the phase development during hydration, ettringite precipitation was identified as the dominant reaction in the first two hours. For both temperatures, the increasing ettringite content turned out to correlate very well with the loss of workability of the reacting cement paste. An exponential relationship between ettringite growth and flow behavior was observed that could be explained by applying the Krieger-Dougherty equation, which describes the influence of solid fraction on the viscosity of a suspension.
46 citations