RT Conference Proceedings
T1 Reuse of waste paper sludge as supplementary cementing material
A1 Frías, M.
A1 Rodríguez, O.
A1 De Rojas, M. I.Sánchez
A1 Nebreda, B.
A1 Vegas, I.
A1 Urreta, J.
A1 García, R.
A1 Vigil, R.
AB This paper shows the possibility of reutilize paper sludge waste as supplementary cementing material for the cement manufacture. This industrial waste consists essentially of a mixture of organic matter (30%) and inorganic compound, such as calcite and clay minerals. The raw paper sludge does not present pozzolanic properties, but once calcined at 650°C during 2 hours, exhibits high pozzolanic activity, similar to silica fume at 28 days, as a consequence of the transformation of kaolinite into metakaolinite. Calcined paper sludge was used as partial Portland cement replacements of 0, 5, 10 and 20%. Enhancement in compressive strength was appreciably obtained for 10 and 20% substitution levels from 7 days on. Furthermore, calcined paper sludge slightly reduces the initial and final setting times of cement paste.
PB Minerals, Metals and Materials Society
SN 9780873397261
YR 2008
FD 2008
LK https://hdl.handle.net/11556/1608
UL https://hdl.handle.net/11556/1608
LA eng
NO Frías , M , Rodríguez , O , De Rojas , M I S , Nebreda , B , Vegas , I , Urreta , J , García , R & Vigil , R 2008 , Reuse of waste paper sludge as supplementary cementing material . in Proceedings of the 2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008 . Proceedings of the 2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008 , Minerals, Metals and Materials Society , pp. 1499-1506 , 2008 Global Symposium on Recycling, Waste Treatment and Clean Technology, REWAS 2008 , Cancun , Mexico , 12/10/08 .
NO conference
DS TECNALIA Publications
RD 26 jul 2024