Forschungsbereich Für Baustofflehre, Werkstofftechnologie Und Brandsicherheit / Research Center of Building Materials, Material Technology, and Fire Safety Science

Bölcskey, Elemer; Bruckner, Heinrich; Deix, Karl; Kirnbauer, Johannes; Lebeda, Christian; Oswald, Monika

doi:10.7767/9783205202264-006

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Young’s moduli of building materials (data from Bölcskey et al, 2014; Dauchez et al, 2008; Gomes et al, 2014; Kamali-Bernard et al, 2004 and Ramírez-Gómez et al, 2013). …”

Section: Introductionmentioning

confidence: 99%

“…However, as there are different inorganic binders for stabilisation/solidification/immobilisation and only cement is considered in this study, a short review on the Young’s moduli of cement and cementitiously bound material is given, and the term ‘cement addition’ is used. Hardened cement has a Young’s modulus of approximately 19 GPa (Kamali-Bernard et al, 2004), which might decrease over time due to the dissolution of portlandite (Ca(OH) 2 ).However, concrete, which is composed of hardened cement and aggregate, has a Young’s modulus of about 40 GPa (Bölcskey et al, 2014), which is in the same range as that of the aggregate alone (Hsieh et al, 2014). It has been shown that the Young’s modulus of concrete increases with the share of aggregate and the maximum particle radius of the aggregate (Li et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of cement addition and briquetting of rock wool on its geomechanical stability in landfills

et al. 2020

View full text Add to dashboard Cite

Landfilling of mineral wool waste in big bags at separate landfill compartments is required in Austria. This results in enormous differences in the Young’s moduli between common construction and demolition (C&D) waste compartments and mineral wool compartments, which causes severe accidents in terms of overturned vehicles due to sudden subsidence of the subsurface. Conditioning of mineral wool waste might be applied to adjust its geomechanical behaviour to that of common C&D waste but has never been investigated scientifically before. In this study we compare three scenarios for the conditioning of rock wool for landfilling: (A) loosely packing, (B) cutting comminution + cement addition and (C) cutting comminution + cement-supported briquetting. The performance of the different sample bodies under landfill conditions was simulated at the lab scale by cyclic loading (1223–3112 N, up to 160 cycles) using a ‘Wille Geotechnik UL 300’ press. The deformation was monitored during the experiment and Young’s modulus was derived graphically, whereas the test execution was piston controlled. The Young’s modulus increased during the experiments from 0.2 MPa to 4.6 MPa for scenario (A), from 0.6 MPa to 20.5 MPa for scenario (B) and from 7.5 MPa to 111.0 MPa for scenario (C). These results show that a combination of comminution and cement-supported briquetting significantly increases the geotechnical performance of mineral wool waste with respect to landfilling, which is still three orders of magnitude below that of common C&D waste, which is in the range of 30,000 MPa.

show abstract

“…Young’s moduli of building materials (data from Bölcskey et al, 2014; Dauchez et al, 2008; Gomes et al, 2014; Kamali-Bernard et al, 2004 and Ramírez-Gómez et al, 2013). …”

Section: Introductionmentioning

confidence: 99%