EP 3908559 A4 20220928 - ACTIVATION OF NATURAL POZZOLAN AND USE THEREOF
Title (en)
ACTIVATION OF NATURAL POZZOLAN AND USE THEREOF
Title (de)
AKTIVIERUNG VON NATÜRLICHEM PUZZOLAN UND VERWENDUNG DAVON
Title (fr)
ACTIVATION DE LA POUZZOLANE NATURELLE ET SON UTILISATION
Publication
Application
Priority
- US 201916241994 A 20190108
- US 2020012812 W 20200108
Abstract (en)
[origin: WO2020146551A1] An activated pozzolan composition includes a fine interground particulate blend of an initially unactivated natural pozzolan and a supplementary cementitious material (SCM) different than the initially unactivated natural pozzolan. The initially unactivated natural pozzolan may include volcanic ash or other natural pozzolanic deposit having a moisture content of at least 3%, and the activated pozzolan composition can have a moisture content less than 0.5% The initially unactivated natural pozzolan may have a particle size less than 1 mm before intergrinding with the SCM. The SCM used to activate the initially unactivated natural pozzolan can be initially coarse or granular with a size greater than 1-3 µm and may include granulated blast furnace slag, steel slag, other metallurgical slag, pumice, limestone, fine aggregate, shale, tuff, trass, geologic material, waste glass, glass shards, basalt, sinters, ceramics, recycled bricks, recycled concrete, refractory materials, other waste industrial products, sand, or natural mineral.
IPC 8 full level
C04B 7/13 (2006.01); C04B 14/06 (2006.01); C04B 14/14 (2006.01); C04B 18/14 (2006.01); C04B 28/00 (2006.01); C04B 28/02 (2006.01); C04B 28/04 (2006.01); C04B 28/32 (2006.01); C04B 38/10 (2006.01); C04B 40/00 (2006.01)
CPC (source: EP)
C04B 28/006 (2013.01); C04B 28/02 (2013.01); C04B 28/04 (2013.01); C04B 28/32 (2013.01); C04B 38/10 (2013.01); C04B 40/0042 (2013.01); Y02P 40/10 (2015.11); Y02W 30/91 (2015.05)
Citation (search report)
- [XI] US 2018194679 A1 20180712 - GUYNN JOHN M [US]
- [X] GB 2116162 A 19830921 - GRACE W R & CO
- See references of WO 2020146551A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2020146551 A1 20200716; CA 3125963 A1 20200716; CN 113490651 A 20211008; EP 3908559 A1 20211117; EP 3908559 A4 20220928; MX 2021008245 A 20211104
DOCDB simple family (application)
US 2020012812 W 20200108; CA 3125963 A 20200108; CN 202080016077 A 20200108; EP 20737936 A 20200108; MX 2021008245 A 20200108