Topic
Cement
About: Cement is a research topic. Over the lifetime, 68440 publications have been published within this topic receiving 829356 citations.
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TL;DR: In this paper, the authors describe the laboratory and field studies of the development of Magnesium Phosphate Cement, an advanced material for speedy repair of concrete pavements, and highlight special considerations on the use of the material and its procedure of application.
232 citations
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TL;DR: In this article, the possibility of reusing ceramic materials waste from container glass, bricks and tiles of red-clay ceramic industry in Portugal as partial cement replacement in mortar and concrete was examined.
232 citations
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TL;DR: In this paper, the authors examined the relative influences of ITZ and micro-cracking on the oxygen diffusivity, oxygen permeability and water sorptivity of cement-based materials.
Abstract: Available experimental investigations on the effect of the aggregate–paste ‘interfacial transition zone' (ITZ) on mass transport properties of cement-based materials appear to be ambiguous. While some studies have found a deleterious effect of the ITZ, results from others seem to suggest otherwise. The present study examines the relative influences of ITZ and microcracking on the oxygen diffusivity, oxygen permeability and water sorptivity, to further enhance understanding of the links between microstructure and transport properties. Specimens of several neat cement pastes, mortars and concretes were prepared and tested. Variables include water/cement (w/c) ratio (0·3 and 0·5), binder type (CEM I and CEM II with 8% silica fume), curing period (3 and 90 days), aggregate volume fraction (0–70%) and preconditioning temperature (50°C and 105°C). 105°C drying was adapted to induce microcracking. Backscattered electron microscopy and image analysis were applied to characterise the microstructure, in particular ...
232 citations
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TL;DR: In this article, a series of findings relating to the alkali-silica reaction are reported, and the results of SEM/EDX and XRD analysis of the materials showed that activated fly ash mortars performed better than the Portland cement equivalents.
232 citations
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TL;DR: In this article, the sulfate resistance of blended Portland cement with fly ash and ground rice husk ash (RHA) was studied, and it was shown that RHA was more effective than fly ash in reducing the expansion of the mortar bars and the pH values.
232 citations