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Concrete with rapid-hardening blastfurnace slag cement: The rate of deterioration by lactic and acetic acid
Concrete specimens made with four different cement types were exposed to a simulation liquid containing lactic acid, acetic acid and water. Simulation cycles lasted two weeks. The pH value of the solution was about 2 at the start of each cycle. The solution was changed if the pH value rose to a value above 4 during a single cycle. The specimens were then cleaned with a high pressure hose, brushed and weighed after each cycle. The mass loss was registered. All specimens were subjected to six cycles. The use of blastfurnace slag cement with a high slag content (75 %; CEM III/B 42.5 LH HS) resulted in the lowest mass loss; specimens with blastfurnace slag cement with a lower slag content (57 %; CEM III/A 52.5), ordinary portland cement (CEM I/42.5 R and CEM I/52.5 R) and portland fly ash cement led to mass loss which was respectively 1.5, 3.5 and 3.9 times higher.
Concrete with rapid-hardening blastfurnace slag cement: The rate of deterioration by lactic and acetic acid
Concrete specimens made with four different cement types were exposed to a simulation liquid containing lactic acid, acetic acid and water. Simulation cycles lasted two weeks. The pH value of the solution was about 2 at the start of each cycle. The solution was changed if the pH value rose to a value above 4 during a single cycle. The specimens were then cleaned with a high pressure hose, brushed and weighed after each cycle. The mass loss was registered. All specimens were subjected to six cycles. The use of blastfurnace slag cement with a high slag content (75 %; CEM III/B 42.5 LH HS) resulted in the lowest mass loss; specimens with blastfurnace slag cement with a lower slag content (57 %; CEM III/A 52.5), ordinary portland cement (CEM I/42.5 R and CEM I/52.5 R) and portland fly ash cement led to mass loss which was respectively 1.5, 3.5 and 3.9 times higher.
Concrete with rapid-hardening blastfurnace slag cement: The rate of deterioration by lactic and acetic acid
Braam, R.C. (author) / Kramer, W.A. (author) / Frenay, J.W. (author)
1998
5 Seiten, 1 Bild, 7 Quellen
Conference paper
English
Beton , Milch , organische Säure , Essigsäure , Korrosion , pH-Wert , pH-Messung , Gewichtsverlust , Hochofenzement , Portlandzement , Flugaschenzement , Agrikultur , Abfallprodukt , Additiv , Fermentation , Geschwindigkeit , Milchsäure
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