Essays about: "Swelling clay"

Found 5 essays containing the words Swelling clay.

  1. 1. Stratigraphy and palaeoenvironment of the early Jurassic volcaniclastic strata at Djupadalsmölla, central Skåne, Sweden

    University essay from Lunds universitet/Geologiska institutionen

    Author : Per Wahlquist; [2023]
    Keywords : volcaniclastic; Djupadalsmölla; CSVP; palynomorphs; early Jurassic; late Pliensbachian; Earth and Environmental Sciences;

    Abstract : From the almost 200 volcanic outcrops in the Central Skåne Volcanic Province (CSVP), only three are of volcaniclastic material. These volcanoclastics, and the transition to the underlying crystalline basement, have been investigated for the first time in a drill core (KBH2) from Djupadalsmölla in order to understand the stra-tigraphy, depositional process, age of deposition, and depositional environment. READ MORE

  3. 2. Design of tunnel support for single zones with swelling clay

    University essay from KTH/Jord- och bergmekanik

    Author : Taha Faris Nihayat; [2022]
    Keywords : Swelling clay; Rock support; Weakness zone; Design; Tunnel;

    Abstract : Swelling clay is an important and challenging geological feature in tunnelling projects.The behaviour of swelling clay is influenced by many internal and external factors.This, combined with a lack of experience and knowledge has resulted in challengeswhen accounting for the swelling phenomena. READ MORE

  4. 3. LABORATORY TESTING RELATED TO UNLOADING MODULUS OF SOFT CLAY

    University essay from Lunds universitet/Geoteknik; Lunds universitet/Institutionen för byggvetenskaper

    Author : Sofia Hasselberg; [2018]
    Keywords : CRS; unloading modulus; storage time; clay; Technology and Engineering;

    Abstract : The unloading modulus, together with the permeability, are responsible for the swelling process of a soil that is subjected to unloading. Studies to examine the unloading modulus of clay has previously been performed and several relationships describing this parameter has hence been developed. READ MORE

  5. 4. The Incidence and Associated Geotechnical Issues of Swelling Clay in Stockholm

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Anna Clark; Viktoria Clarin; [2015]
    Keywords : Tunnel stability; swelling clay; reinforcement; Söderström fault; swelling pressure; Tunnelstabilitet; svällande lera; förstärkning; Söderströmsförkastningen; svälltryck;

    Abstract : The Incidence and Associated Geotechnical Issues of Swelling Clay in Stockholm  Viktoria Clarin & Anna Clark  Previous tunnel failures have shown that inadequate reinforcement in tunnels can lead to cave-ins, whereby swelling clay is one of several factors that can result in these damages. Swelling clay minerals possess the ability to absorb water molecules and cations leading to an increase in volume. READ MORE

  6. 5. The swelling pressure of bentonite and sand mixtures

    University essay from KTH/Skolan för kemivetenskap (CHE)

    Author : Sandra Sánchez González; [2013]
    Keywords : Swelling pressure; bentonite and sand mixture; crystalline swelling; osmotic swelling; mechanistic model; montmorillonite.;

    Abstract : The compacted bentonites are used as buffer and backfill materials for engineering barriers for high-level nuclear waste repositories located underground. For this purpose, it is very important to evaluate the swelling characteristics of this clay. The swelling capacity is one of the most important properties of the bentonite clay. READ MORE