Blar i NTNU Open på forfatter "Scherer, George W."
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FOAM INDEX MEASUREMENTS ON MIXES OF AIR ENTRAINING AGENTS, SUPERPLASTICIZERS AND FLY ASH-CEMENT- FILLER BLENDS
Jacobsen, Stefan; Nordahl-Pedersen, Henrik; Omer Rasol, Hawar; Lødemel, Øyvind Olsen; Tunstall, Lori; Scherer, George W. (Chapter, 2016)Foam Index (FI) measurements were made to investigate the foaming efficiency of different AEAs with varying cements (OPC, blended), fly ashes (FA) and fillers, and the effect on foaming of mixing sequence of AEA and SP. ... -
Freezing induced stresses in concrete-steel composite beams and effect of air voids
Jacobsen, Stefan; Scherer, George W. (Chapter, 2016)The thermal expansion match between concrete and steel is lost when freezing occurs, owing to enhanced shrinkage caused by cryosuction in the pore solution and the high coefficient of thermal expansion (CTE) of ice. Freezing ... -
Predicting AEA dosage by Foam Index and adsorption on Fly Ash
Jacobsen, Stefan; Ollendorff, Margrethe; Geiker, Mette Rica; Tunstall, Lori; Scherer, George W. (Chapter; Conference object; Preprint, 2012)Abstract: The unpredictable air entrainment in fly ash concrete caused by carbon in fly ash was studied by measuring adsorption of Air Entraining Agents (AEA) on the fly ash and by Foam Index (FI) testing. The FI test ... -
Production and Documentation of Frost Durable High-Volume Fly Ash Concrete: air entrainment, cracking and scaling in performance testing
Shpak, Andrei (Doctoral theses at NTNU;2020:366, Doctoral thesis, 2020)Concrete with moderate replacement levels of fly ash (FA) has been used for decades and considered sustainable in harsh environments. If the replacement levels become high (FA/C > 40…50%), the range of properties from fresh ...