Searched for: subject%3A%22bentonite%22
(1 - 19 of 19)
document
Flessati, L. (author), Vecchia, Gabriele Della (author), Musso, Guido (author)
Cement-bentonite cut-off walls are commonly employed in geoenvironmental applications to limit ground water flow and pollutant transport. The wide diffusion of this artificial material in the current practice is not only due to its low permeability, but also to its simplicity of use. In this paper, experimental evidences about the role of...
journal article 2023
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Dieudonné, A.A.M. (author), Gatabin, Claude (author), Dridi, Wissem (author), Talandier, Jean (author), Collin, Frédéric (author), Charlier, Robert (author)
This paper presents a comprehensive investigation of the swelling behaviour of a compacted bentonite–sand mixture subjected to hydration under constant volume conditions. Contrary to previous studies, the tested sample was isotropically compacted before being hydrated under constant volume conditions until full saturation was reached. The...
journal article 2023
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Pleij, Lodewijk (author)
The soil-grout interface friction was measured to be in between 0.0 [kPa] and 14 [kPa]. To measure this friction, a special research method was invented that enabled a tunnel to be recreated. With this setup, any formation could be used. The formation could be created with a hole in the middle which simulated a borehole. Next, by filling and...
master thesis 2022
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Zheng, Dongzhu (author), Bezuijen, Adam (author), Talmon, A.M. (author)
This paper presents an improvement on a previous model for predicting the Marsh funnel (MF) test that is used in slurry shield tunneling for evaluating the rheological properties of bentonite slurries. The improvement focuses on the prediction of the dynamic part for fluids with small MF times. The velocity profile of the Herschel-Bulkley...
journal article 2022
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Shakeel, A. (author), Kirichek, Alex (author), Chassagne, C. (author)
Kaolinite suspensions are known to have quite fast settling behaviour and Newtonian character, particularly at low concentrations, due to the non-swelling nature of their constitutive particles. On the other hand, bentonite is known for its swelling and interacting nature, which leads to the formation of a network structure, even at low...
journal article 2021
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Rawat, Abhishek (author), Lang, Linzhi (author), Baille, Wiebke (author), Dieudonné, A.A.M. (author), Collin, Frederique (author)
A methodology for identifying and calibrating the material parameters for a coupled hydro-mechanical problem is presented in this paper. For validation purpose, a laboratory-based water infiltration test was numerically simulated using finite element method (FEM). The test was conducted using a self-designed column-type experimental device,...
journal article 2020
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Ambrosi, Matteo (author)
During the advance of a tunnel boring machine (TBM), the torque applied to rotate the cutterhead must overcome the resisting moments acting on it. Hence, one of the major concerns of TBM design is to determine the torque and power requirements of the excavation machine. The first empirical approach for torque estimation was developed in the 80’s...
master thesis 2019
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Karunarathne, Venura Kiloshana (author), Paul, Suvash Chandra (author), Šavija, B. (author)
In this study, the use of nano-silica (nano-SiO<sub>2</sub>) and bentonite as mortar additives for combating reinforcement corrosion is reported. More specifically, these materials were used as additives in ordinary Portland cement (OPC)/fly ash blended mortars in different amounts. The effects of nano-silica and bentonite addition on...
journal article 2019
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Sedighi, Majid (author), Thomas, Hywel R. (author), Vardon, P.J. (author)
This paper presents an investigation of coupled thermal, hydraulic, and chemical behavior of a compacted bentonite buffer under the heating and hydration conditions of geological disposal of high-level nuclear waste. The study presented provides further insight into the evolution of hydro-geochemistry of the compacted bentonite and the clay...
journal article 2018
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de Wolf, J.S. (author)
This thesis aims to analyse the conservatism in the current Dutch recommendations on the external friction angle 𝛿 of diaphragm walls: 𝛿 = 𝑚𝑖𝑛[𝜙, 20°] (for curved slip surfaces) (CUR/COB, 2010), by means of an experimental investigation. Based on literature, two sources of conservatism are identified: 1) filter cake contamination by excavated...
master thesis 2016
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Foortse, B. (author)
People all around the world live and work in low-lying areas. Low-lying areas have to be protected against high water levels in rivers and at sea by a water protection system (e.g. by dunes, dikes and barriers). Dikes are an important component within water protection systems. Generally, dikes are described as elongated naturally occurring or...
master thesis 2016
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Van Dalen, J.H. (author), Bosch, J.W. (author), Broere, W. (author)
Flow processes, taking place during the concreting of diaphragm wall panels (D-wall panels), are of great importance for the quality of the wall. During this phase, the bentonite, present in the excavated trench, should be completely replaced by concrete in a controlled way. In literature several cases are described in which this process...
conference paper 2015
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Flow processes, taking place during the concreting of diaphragm wall panels (D-wall panels), are of great importance for the quality of the wall. During this phase, the bentonite, present in the excavated trench, should be completely replaced by concrete in a controlled way. In literature several cases are described in which this process...
conference paper 2015
document
Van Dalen, J.H. (author), Bosch, J.W. (author), Broere, W. (author)
Flow processes, taking place during the concreting of diaphragm wall panels (D-wall panels), are of great importance for the quality of the wall. During this phase, the bentonite, present in the excavated trench, should be completely replaced by concrete in a controlled way. In literature several cases are described in which this process...
conference paper 2015
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Broere, W. (author)
Face stability of microtunnelling TBMs is an important aspect for a safe and controlled project execution. Lack of proper face support can lead to sudden collapse with resulting large settlements. Guidelines for minimal and maximal support pressures in most codes do not take the infiltration of bentonite suspension in coarser soils into account....
journal article 2014
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Van der Waal, K.T. (author)
Bentonite is a clay that is used in many industrial applications. Company X required an investigation on the bentonite that is mined by Company Y. Currently Company X produces cat litter only from her bentonite, but other applications might be of economical interest to the company. After scoping down to 4 applications other than cat litter ...
bachelor thesis 2014
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Ooms, M.C. (author)
A research was undertaken to find the suitability of Turkish calcium bentonite from the mines of a Company. Four samples of bentonite mines in the {\"U}nye region are researched, the M1, M2, M3 and M4 mine. The suitability of drilling fluid, foundry sand, soil improvement and bleaching earth applications is found through research on the...
bachelor thesis 2014
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Lubach, A.J. (author)
This report is part of my master thesis research for the master ‘Underground Space Technology’ at the faculty of Civil Engineering and Geosciences at Delft University of Technology. Recent calamities e.g. at Vijzelgracht station, part of the North/South line in Amsterdam, triggered the need for research on diaphragm walls and the occurrence of...
master thesis 2010
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Verhoef, P.N.W. (author)
Review of the application of the Methylene Blue adsorption test (titration spot method) applied to geomaterials (soils and rocks). With this method the Cation Exchange Capacity (CEC) of fine soils or fine grounded rock powder can be determined. Swelling clays have a high CEC and even small quantities (less than 1 mass % can be detected by this...
report 1992
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