Topic
Mortar
About: Mortar is a research topic. Over the lifetime, 25024 publications have been published within this topic receiving 218739 citations.
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TL;DR: In this paper, the authors focused on the use of coal bottom ash from Tefereyre (Niger) power plant coal-fuelled, as a fine aggregate in cementitious mortar.
61 citations
TL;DR: It is shown by this study that the electrochemical impedance behavior of mortars varies in the process of carbonation, and it has been found that the parameter is a function ofcarbonation depth and of Carbonation time.
Abstract: A new electrochemical model has been carefully established to explain the carbonation behavior of cement mortar, and the model has been validated by the experimental results. In fact, it is shown by this study that the electrochemical impedance behavior of mortars varies in the process of carbonation. With the cement/sand ratio reduced, the carbonation rate reveals more remarkable. The carbonation process can be quantitatively accessed by a parameter, which can be obtained by means of the electrochemical impedance spectroscopy (EIS)-based electrochemical model. It has been found that the parameter is a function of carbonation depth and of carbonation time. Thereby, prediction of carbonation depth can be achieved.
61 citations
TL;DR: In this article, the possibility of using environmentally-friendly mortars (with crushed bricks replacing sand) as bedding mortars for repair of historical building was studied, and the use of recycled bricks instead of virgin sand, if finely ground, could allow to strongly improve mortar-brick bond strength; while, if roughly ground, it could allow a good compromise between vapour permeability and capillary absorption of mortar.
61 citations
TL;DR: In this article, the efficiency of a migrating corrosion inhibitor in stopping or reducing corrosion of steel has been investigated in saturated (sat.) calcium hydroxide (Ca[OH]2) solutions and mortar.
Abstract: The efficiency of a migrating corrosion inhibitor in stopping or reducing corrosion of steel has been investigated in saturated (sat.) calcium hydroxide (Ca[OH]2) solutions and mortar. In solution, a slight decrease of the corrosion rate was found when the inhibitor blend (10%) was added after the onset of pitting corrosion. Investigation of the diffusion rate in mortar demonstrated the high mobility of the hydroxyalkylamine molecule in porous cement paste. Thus, it was assumed that it is, in principle, possible to obtain high inhibitor concentrations at the rebar to influence corrosion rate. However, on reinforced mortar samples showing chloride-induced pitting corrosion, no reduction of the corrosion rate could be detected after inhibitor application. The discrepancy between the observed high diffusion rate and the lack of corrosion mitigation was rationalized by the fact that only the diffusion of the volatile component of the inhibitor was measured. Migration of the nonvolatile component (car...
61 citations
TL;DR: In this article, the effects of glass powder (GP) as a partial precursor on properties of both OPC and alkali-activated slag (AAS) mortars were evaluated.
61 citations