Essays about: "GGBS"

Showing result 1 - 5 of 6 essays containing the word GGBS.

1. 1. Environmental and technical evaluation of cement reduction and test methods for fibre reinforced shotcrete in tunnels

   University essay from KTH/Betongbyggnad

   Author : Elin Brodd; Lina Östlund; [2022]
   Keywords : Shotcrete; Global Warming Potential; Environmental Product Declaration; Tunnel construction; Fibre reinforcement; Compressive strength; Residual strength; GGBS; Sprutbetong; Klimatpåverkan; Miljövarudeklaration; Tunnelbyggande; Fiberarmering; Tryckhållfasthet; Residualhållfasthet; Granulerad Masugnsslagg;

   Abstract : The dominating support method for hard rock tunnels today is use of fibre reinforced shotcrete in combination with rock bolts. The fibre reinforced shotcrete secures smaller blocks, while rock bolts are used to support larger blocks in the rock. Application of shotcrete is done by spraying against the rock surface using compressed air. READ MORE

3. 2. CLIMATE-SMART CONCRETE APPLIED ON A SLAB FRAME BRIDGE

   University essay from KTH/Betongbyggnad

   Author : Sabina Dal; Sandra Raheb Khalo; [2022]
   Keywords : ;

   Abstract : This study examines alternative actions that are applied to an existing structure in Stockholm in order to reduce the global warming effect, in the form of carbon dioxide emissions. The structure consists of a slab frame bridge with belonging piles in the foundation, of which the building material is reinforced concrete with two different concrete types, namely concrete type C35/45 and concrete type C50/60. READ MORE

4. 3. Environmental and technical evaluation of cement reduction and test methods for fibre reinforced shotcrete in tunnels

   University essay from KTH/Betongbyggnad

   Author : Elin Brodd; Lina Östlund; [2022]
   Keywords : ;

   Abstract : The dominating support method for hard rock tunnels today is use of fibre reinforcedshotcrete in combination with rock bolts. The fibre reinforced shotcretesecures smaller blocks, while rock bolts are used to support larger blocks in therock. Application of shotcrete is done by spraying against the rock surface usingcompressed air. READ MORE

5. 4. Concrete in vertical slipforms : A process for determining a suitable concrete composition

   University essay from KTH/Betongbyggnad

   Author : Ellen Gegerfelt; Alva Hasselqvist; [2021]
   Keywords : Slipforming; fresh concrete; workability; consistency; alternative binders; slipform rate; lifting cracks; delamination; lump formation; Glidformsgjutning; färsk betong; arbetbarhet; konsistens; alternativa bindemedel; glidformshastighet; lyftsprickor; delaminering; klumpbildning;

   Abstract : In the construction industry of today, many projects are getting bigger, higher and more complicated than ever before. The most important material in these projects is concrete and the process of casting has developed a lot during the last century. READ MORE

6. 5. Climate enhanced concrete in the civil engineering industry

   University essay from KTH/Betongbyggnad

   Author : Daniel Hofgård; John Sundkvist; [2020]
   Keywords : Alternative binders; carbon dioxide emissions; concrete for bridges; hydropower structures; wind powerplant foundations; GGBS; fly ash; material parameters; silica fume; trass; volcanic ash.; Alternativa bindemedel; vindkraftsfundament; brobetong; GGBS; flygaska; koldioxidutsläpp; mald granulerad masugnsslagg; materialparametrar; silikastoft; trass; vattenbyggnadsbetong; vulkanaska;

   Abstract : In 2017, the Swedish Parliament stated a new climate law with the goal that Sweden should be climate neutral by 2045. The concrete industry has developed a roadmap on how the goal for 2045 can be achieved, where one way to reduce the carbon emissions from concrete is by replacing a part of the cement clinker with alternative binders in the concrete mix. READ MORE