Essays about: "shrinkage strain"

Showing result 1 - 5 of 6 essays containing the words shrinkage strain.

1. 1. Modelling Time-Dependent Effects for Segmentally Constructed Prestressed Concrete Bridges

   University essay from Lunds universitet/Avdelningen för Konstruktionsteknik; Lunds universitet/Institutionen för bygg- och miljöteknologi

   Author : Niclas Elfving; Joel Sunesson; [2021]
   Keywords : Concrete; Creep; Segmentally constructed; Prestressing; Post-tensioning; Viscoelastic; Eurocode; Finite Element; Shell elements; Beam elements; Time-dependant; Steel relaxation.; Technology and Engineering;

   Abstract : Tidsberoende effekter, såsom krypning, krympning och stålrelaxation, är ofta svåra att prediktera när det kommer till förspända betongkonstruktioner. Krypning som ett fenomen är komplicerat och förenklas därför i gällande byggnormer (Eurocode), för att underlätta konstruktörens arbete. READ MORE

3. 2. Reinforced Concrete Structures Subjected to Imposed Deformations: A Study of Cracking due to Shrinkage in Slab Foundations for Residential Houses

   University essay from Lunds universitet/Avdelningen för Konstruktionsteknik; Lunds universitet/Institutionen för bygg- och miljöteknologi

   Author : Henrik Johansson; Martin Heinegård; [2020]
   Keywords : Reinforced concrete structures; nonlinear finite element analysis; crack widths; imposed deformations; shrinkage; foundation slabs; fracture mechanics; Atena 2D; Technology and Engineering;

   Abstract : The need for limiting crack widths in reinforced concrete structures is due to durability, tightness towards gaseous and liquid substances, and for aesthetic reasons. Although concrete cracks at relatively low tensile stresses and can not be avoided, strategies for crack control can be adopted to meet the requirements. READ MORE

4. 3. Reinforced Concrete Subjected To Restraint Forces : A comparison with non-linear numerical analyses

   University essay from KTH/Bro- och stålbyggnad

   Author : Niels Brattström; Oliver Hagman; [2017]
   Keywords : Restraint forces; concrete; cracking; restraint degree; crack width; creep; thermal actions; shrinkage; Tvångskrafter; betong; sprickor; inspänningsgrad; sprickvidder; krypning; termisk last; krympning;

   Abstract : In Sweden, it is Eurocode 2 which forms the basis for performing a design of concrete structures, in which methods can be found treating the subject of restrained concrete members and cracking in the serviceability limit state. In the code, both detailed hand calculations procedures as well as simplified methods are described. READ MORE

5. 4. Evaluation of a concrete plug : From the Dome Plug Experiment DOMPLU at Äspö HRL

   University essay from KTH/Betongbyggnad

   Author : Anders Kristiansson; [2014]
   Keywords : DOMPLU; DOPAS; concrete plug; KBS-3V; measurement; full scale test; SKB; nuclear waste repository; DOMPLU; DOPAS; betongplugg; KBS-3V; mätningar; fullskaleförsök; SKB; kärnavfallsförvaring;

   Abstract : In SKB’s Äspö Hard Rock Laboratory (HRL) a full scale test of a concrete plug,part of a sealing structure for the depository of spent nuclear fuel, has been carriedout. The aim of this thesis is to evaluate the behavior of the concrete plug and howit corresponds to assumptions made during the design. READ MORE

6. 5. Waves over Fabric : Why they appear and how to reduce them.

   University essay from Högskolan i Borås/Institutionen Textilhögskolan

   Author : ANNA FRISK; [2013]
   Keywords : Almedahls; waves; grey-weave; weave; fabric; mechanical properties; thermal properties; production line; finishing line; processes; customer complaints; stress; strain; tensile;

   Abstract : Almedahls have for some time started to receive more customer complaints about uneven roller blind fabrics or so-called waves over fabric. The waves are a major problem for Almedahls customers since they make it hard to cut the fabric into roller blinds. READ MORE