| Title |
Dirbtinių užpildų, pagamintų iš organinių atliekų, gamyba ir tyrimai / |
| Translation of Title |
Manufacture and research of artificial aggregates made from organic wastes. |
| Authors |
Korobka, Renaldas |
| Full Text |
|
| Pages |
64 |
| Keywords [eng] |
artificial aggregates ; wood sawdust ; cement ; oil shale ash ; CO2 emissions |
| Abstract [eng] |
The Master's thesis analyses the production and use of artificial fillers made from organic waste in mortars. The aim of the thesis is to develop an environmentally friendly artificial aggregate made from wood sawdust and shale ash for use in cement mortars. Furthermore, it is investigated how different types of chemical additives influence the interaction between the hydration of wood sawdust and cement composite. The literature analysis part reviews the chemical composition of wood and which compounds in wood weaken the hydration of cement. The effect of wood on the physical and mechanical properties of the cement-wood composite is also reviewed. The theoretical part analyses the possible ways and chemicals to counteract the negative effects of sawdust on the interaction with cement. The presently known cement hydration accelerators and their principles of operation are reviewed. In the experimental part, artificial aggregates of different compositions were produced and analysed, and one composition was selected for further investigations in mortars. In further studies, mortars were created by replacing the volumetric sand with the developed artificial aggregate. The effect of the aggregates on the physical and mechanical properties of the mortars, as well as on the resistance to surface freezing and thawing, was determined by laboratory tests. Calculations of the CO2 footprint for the production of different mortar compositions were carried out. |
| Dissertation Institution |
Kauno technologijos universitetas. |
| Type |
Master thesis |
| Language |
Lithuanian |
| Publication date |
2025 |
