Sökning: "Porstruktur"
Visar resultat 1 - 5 av 7 avhandlingar innehållade ordet Porstruktur.
1. Hydration, pore structure, and related moisture properties of fly ash blended cement-based materials : Experimental methods and laboratory measurements
Sammanfattning : Cement-based materials, such as mortar and concrete, are the most employed construction materials in the world. Cement is an important component; it reacts with water to form a glue, called cement paste, which causes the material to harden. Today, cement production accounts for a significant portion of the world’s annual carbon dioxide emissions. LÄS MER
2. Kalkputs- porstrukturens betydelse för beständighet
Sammanfattning : SammanfattningVid restaureringar av historisk kalkputs kan det vara svårt att uppnå den beständighet som är önskvärd. Idag händer det att nygjord kalkputs fryser ned efter bara ett par vintrar. För att förstå och lösa problemen kring kalkputs behöver problemet studeras ur olika synvinklar. LÄS MER
3. Kalkputs : porstrukturens betydelse för beständighet
Sammanfattning : When restoring historic lime plaster it can be difficult to reach the required durability. Today newly made lime plaster can fall off due to frost damages after only a couple of winters. To understand and solve these problems, the subject has been studied from different perspectives. LÄS MER
4. Gasification of biochars: Evolution of pore structure, effects of alkalis and alkali release
Sammanfattning : Renewable energy sources are indispensable to meet the rising demand of energy usage while reducing the negative environmental impact of utilising fossil fuels. Gasification is an efficient technology to convert biogenic waste into valuable gaseous products. LÄS MER
5. The influence of ageing on the salt-frost resistance of concrete
Sammanfattning : Abstract This thesis presents the results of an investigation of the influence of ageing on the salt-frost resistance of concrete. The ageing mechanisms investigated were hydration, drying and carbonation. LÄS MER