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
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
Citations
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Workability and Mechanical Properties of Superplasticized Microfine Cement Grouts
TL;DR: In this paper , workability and mechanical properties of superplasticized microfine cement grouts (SMCG) with various Superplasticizer (SPs) are evaluated systematically, and the results show that the dispersion effects of SP on rheological behavior were followed by PCE, M and N in order of the influence degree.
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Experimental Investigation and Numerical Verification on Diffusion of Permeable Polymers in Sandy Soils with Considering Grouting Parameters
Journal ArticleDOI
Influence of bleeding characteristic of cement slurry on performance of penetration grouted sand
Journal ArticleDOI
Polynomial neural network model to estimate the stress–strain behavior of zeolite-cement injected sand
TL;DR: In this article , a polynomial neural network (PNN) model was used to predict stress (q)-strain (ε) behavior of zeolite-cement injected sand.
References
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Book
The rheology of fresh concrete
TL;DR: In this article, the authors discuss the application and extension of established rheological techniques to the measurement of workability in place of ''ad hoc' empirical methods, and show that cement pastes behave according to the Bingham model at low shear rates.
Book
Engineering Principles of Ground Modification
TL;DR: Mechanical modification hydraulic modification physical and chemical modification modification by inclusions and confinement.
Journal ArticleDOI
Yield stress: A time-dependent property and how to measure it
TL;DR: In this paper, the authors reviewed the different aspects of the yield stress phenomenon and tried a synthesis of knowledge and concluded that the choice of observation time or shear rate to use should be related to the characteristic time of the flow process to which the result is to be applied.
Journal ArticleDOI
Direct Determination of the Flow Curves of Non‐Newtonian Fluids. III. Standardized Treatment of Viscometric Data
Irvin M. Krieger,Samuel H. Maron +1 more
TL;DR: In this article, a scheme for systematizing the handling of viscometric data through use of the variables apparent fluidity φa and shearing stress F is proposed.
Journal ArticleDOI
Penetrability due to filtration tendency of cement-based grouts
Daniel Eklund,Håkan Stille +1 more
TL;DR: The possibilities of sealing structures are of great importance from both an economical and environmental point of view as discussed by the authors, and Grouting as a method of strengthening and sealing rock, soil and concrete is widely used.