Sökning: "Varying Aperture Long Slot – VALS"

Hittade 2 uppsatser innehållade orden Varying Aperture Long Slot – VALS.

1. 1. Evaluation of Real Time Grouting Control Theory Using a Varying Aperture Long Slot- VALS

   Master-uppsats, KTH/Jord- och bergmekanik

   Författare :Elizaveta Pronina; [2018]
   Nyckelord :Grouting; Real Time Grouting Control theory-RTGC; Penetration Length; Cement-Based Grout; Varying Aperture Long Slot – VALS; hydraulic aperture;

   Sammanfattning : The main goal of the grouting is to seal the fractures in the rock mass,improve the strength properties of the rock mass and decrease deformability. However,the overuse of the grouting should be avoided due mainly to economic reasons,optimizing the project time and sometimes severe environmental issues. LÄS MER

3. 2. Application of Dynamic Grouting to Improve the Grout Spread Using Varying Aperture Long Slot (VALS) : AN EXPERIMENTAL STUDY

   Master-uppsats, KTH/Jord- och bergmekanik; KTH/Byggvetenskap

   Författare :Robabeh Hosseini; Yalta Steven; [2018]
   Nyckelord :grout penetrability; filtration tendency; varying aperture long slot; sealing; cement-based grout; dynamic grouting; bruksinträngningsförmåga; filtrationstendens; VALS; tätning; cementbaserade injekteringsmedel; dynamisk injektering;

   Sammanfattning : In the past centuries, grouting has been one of the most common techniques in geotechnical engineering to strengthen and seal underground structures. Concerning increasing demands for tightness and cost efficiency, cement-based grout has been one the most frequent used materials. LÄS MER