Sökning: "concrete crack"

Visar resultat 16 - 20 av 101 uppsatser innehållade orden concrete crack.

1. 16. Concrete reinforced with FRP rebars : Evaluation of durability and behaviour in the Service Limit State (SLS)

   Master-uppsats, Luleå tekniska universitet/Byggkonstruktion och brand

   Författare :David Ottosson; [2021]
   Nyckelord :GFRP; Durability; SLS; Atena;

   Sammanfattning : One of the most common building materials is concrete and it has been for a long time. To overcome its low tensile capacity concrete structures are normally reinforced with steel rebars. LÄS MER

3. 17. Performance of reinforced concrete bridges strengthened with Carbon Fiber Reinforced Polymers : Case study: Essinge Bridge over Pampaslänken

   Master-uppsats, KTH/Bro- och stålbyggnad; KTH/Jord- och bergmekanik

   Författare :Zeinab Mirzahassanagha; Eva Malo; [2021]
   Nyckelord :CFRP; External Strengthening Method; RC Bridges; Curved Substrate; Finite Element Modelling; Kolfiberväv; Extern Förstärkningsmetod; Betongarmerade broar; Konkav yta; Finita Elementa Modellering;

   Sammanfattning : This master thesis deals with the performance of existing reinforced concrete bridges strengthened with externally bonded carbon fibre reinforced polymers (CFRP). One of the main aims of this work is to understand the functionality of such an external strengthening method applied to a concave surface in a heavy concrete structure such as a bridge. LÄS MER

4. 18. Numerical simulations of shear reinforced concrete beams subjected to blast loads

   Master-uppsats, KTH/Betongbyggnad

   Författare :Anton Frank; Andreas Fristedt; [2021]
   Nyckelord :Numerical simulations; shear reinforcement; blast loads; dynamic shear failure; Numeriska simuleringar; tvärkraftsarmering; luftstötvåg; dynamiskt skjuvbrott;

   Sammanfattning : Historical accidents and experimental investigations have made apparent that blast loaded concrete members are prone to fail in brittle shear rather than a ductile flexure mode. Air blasts from accidental detonations or explosives may cause severe damage to buildings and infrastructure and it is of great importance that load carrying members can withstand the impulse that arise to avoid progressive collapses. LÄS MER

5. 19. Shear strength of prestressed concrete beams without shear reinforcement : A comparison between equations

   Master-uppsats, KTH/Betongbyggnad

   Författare :Bawan Azad; [2021]
   Nyckelord :Shear force; prestress concrete; design provisions; Eurocode; carrying capacity; parametric study; concrete beam; Tvärkraft; förspänd betong; dimensioneringsbestämmelser; Eurokod; bärförmåga; parameterstudie; betongbalk;

   Sammanfattning : A new version of EN 1992-1-1, Eurocode 2 for Design of Concrete Structures, is under development and one of the most discussed topics is shear capacity for prestressed concrete beams without shear reinforcement, partly because shear failure occurs suddenly and can have catastrophic consequences. For the new version of Eurocode, there are a total of three proposed equations to replace the two equations that currently exist in EN 1992-1-1 for shear capacity of prestressed concrete beams without shear reinforcement. LÄS MER

7. 20. Klimatoptimering av källargrundläggning för större byggnader

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Avdelningen för Konstruktionsteknik; Lunds universitet/Institutionen för bygg- och miljöteknologi

   Författare :Martin Bitzén; John Jacobsson; [2021]
   Nyckelord :källarväggar; betong; kolstålsarmering; rostfri armering; grundläggning; Eurocode; exponeringsklasser; vattentäthet; sprickbredd; koldioxidutsläpp; enkätstudie; Technology and Engineering;

   Sammanfattning : Due to increased environmental and climate awareness, great emphasis has been placed on both research and development of environmental impact of buildings. Scientific research on climate optimization of both structural frames and floors is well developed. LÄS MER