Sökning: "basalt and synthetic fibres"

Hittade 2 uppsatser innehållade orden basalt and synthetic fibres.

  1. 1. EVALUATION OF ENVIRONMENTAL AND TECHNICAL PERFORMANCE OF ALTERNATE FIBRES FOR SHOTCRETE IN TUNNELS

    Master-uppsats, KTH/Betongbyggnad

    Författare :Shilpa Anand; [2022]
    Nyckelord :Shotcrete; Life cycle assessment; Environmental Product Declaration; Global warming potential; steel; basalt and synthetic fibres; flexural strength; energy absorption.;

    Sammanfattning : Tunnels in hard and jointed rock are normally excavated in an arch shape to enable the rock mass to support its weight. Since the beginning of the 1980's, fibre reinforced shotcrete (FRS) in combination with rock bolts have been the dominating support method for hard rock tunnels. LÄS MER

  3. 2. 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