Sökning: "round determinate panels"

Hittade 2 uppsatser innehållade orden round determinate panels.

  1. 1. Laboratory testing of shotcrete with fibres of steel, basalt or synthetic materials

    Master-uppsats, KTH/Betongbyggnad

    Författare :Muralidharan Rengarajan; [2020]
    Nyckelord :Fibre reinforced shotcrete; Energy absorption; Residual strength; Fibres; and Laboratory testing;

    Sammanfattning : Shotcrete or sprayed concrete has become an inevitable material for stabilising and supporting hard rock tunnels. To prevent rock block fallouts in the excavated tunnel, shotcrete is pneumatically projected under high pressure on the rock surface. LÄS MER

  2. 2. An experimental study of the validity of the round panel test method for shotcrete

    Master-uppsats, KTH/Betongbyggnad

    Författare :Nadia El zain; [2018]
    Nyckelord :Shotcrete; sprayed concrete; yield line theory; tunnel lining; steel fibers; round determinate panels; test beams; Sprutbetong; runda plattor; tunnelbeklädnad; fiberarmerad sprutbetong; stålfibrer; böjdraghållfasthet; balkar; mätosäkerhet;

    Sammanfattning : Shotcrete (sprayed concrete) was used for the first time in 1914 and has become of  growing importance in stabilizing the excavated tunnel sections over the past century.  Even though the technology develops, there are some difficult tasks such as the design of a bolt anchored tunnel lining made of shotcrete. LÄS MER