Journal ArticleDOI
Development of microfine cement grouts by pulverizing ordinary cements
Ioannis A. Pantazopoulos,I. N. Markou,Dimitrios Christodoulou,A. I. Droudakis,Dimitrios K. Atmatzidis,S.K. Antiohos,E. Chaniotakis +6 more
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TLDR
In this article, three different cements (CEM I, CEM II/B-M and CEM IV/B according to EN 197-1) containing 0, 23.5% and 38% of pozzolan, respectively, were pulverized to obtain three additional gradations from each cement, with nominal maximum grain sizes of 40, 20 and 10μm.Abstract:
Three different cements (CEM I, CEM II/B-M and CEM IV/B according to EN 197-1) containing 0%, 23.5% and 38% of pozzolan, respectively, were pulverized to obtain three additional gradations from each cement, with nominal maximum grain sizes of 40, 20 and 10 μm. Cements with the two finer gradations are classified as “microfine” cements. Suspension properties, groutability and effectiveness of all cements were evaluated for water-to-cement ratios (W/C) of 1, 2 and 3 by weight. A superplasticizer was used to optimize rheological properties. The properties and performance of all suspensions tested are affected primarily by W/C ratio and cement fineness. All microfine cement suspensions have acceptable apparent viscosity, behave as Bingham fluids, are stable for W/C = 1, have reasonable setting times for field applications, have mostly predictable groutability and provide satisfactory strength to grouted sands. The finer gradations of II/B-M cement exhibited the best overall behavior and are considered as the most promising compared to similar gradations of the other two cements.read more
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Experimental study on performance of cement-based grouts admixed with fly ash, bentonite, superplasticizer and water glass
TL;DR: In this paper, the ASTM Type I Portland cement (PC), class F fly ash (FA), bentonite (B), superplasticizer (SP) and water glass were designed to improve properties of grouting materials in different aspects.
Journal ArticleDOI
Development of an injectable grout for concrete repair and strengthening
TL;DR: In this paper, the coupled effect of temperature and silica fume addition on rheological, mechanical behaviour and porosity of grouts based on CEMI 42.5R, proportioned with a polycarboxylate-based high range water reducer was investigated.
Journal ArticleDOI
Performance and hydration study of ultra-fine sulfoaluminate cement-based double liquid grouting material
TL;DR: In this article, a double liquid grouting material (ultra-fine sulfoaluminate cement-based grouting materials) was studied with micro-calorimeter, thermal-thermogravimetric (DTA-TG) analysis, scanning electron microscopy and energy spectrum technique (SEM-DES), marsh cone flow time, setting time, compressive strength and expansion/shrinkage tests.
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Rheological and mechanical properties of microfine-cement-based grouts mixed with microfine fly ash, colloidal nanosilica and superplasticizer
TL;DR: In this paper, a microfine-cement-based grout mixed with microfine fly ash (MFA), colloidal nanosilica (NS) and superplasticizer (SP) was designed to ensure desirable fluidity, less leaching and mechanical properties of grouts in geotechnical engineering.
Journal ArticleDOI
Investigation on fundamental properties of microfine cement and cement-slag grouts
TL;DR: In this article, the properties of six different MC grouts (three portland-based and three slag-blended) and two ordinary Portland cements (ASTM I and III) are measured.
References
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Journal Article
Properties of Cement Grouts and Grouted Sands with Additives
Journal Article
Improving Slurry Viscosity and Flow-Curve Measurements
N. I. Heywood,N.J. Alderman +1 more
Journal Article
Ultrafine Cement Tests and Dam Test Grouting
Grout injection in the laboratory
TL;DR: In this paper, the authors proposed a grout injection procedure to check its performances concerning the homogeneity and the reproducibility of the grouted samples, which was validated by three parameters: the cement to water ratio, the rate of discharge of grout and the nature of the soil.