EP 0891310 A1 19990120 - METHODS FOR MAKING GEOPOLYMERIC CEMENTS AND CEMENTS RESULTING FROM THESE METHODS
Title (en)
METHODS FOR MAKING GEOPOLYMERIC CEMENTS AND CEMENTS RESULTING FROM THESE METHODS
Title (de)
VERFAHREN ZUR HERSTELLUNG GEOPOLYMEREN ZEMENTE UND ZEMENTE HERGESTELLT DURCH DIESES VERFAHREN
Title (fr)
METHODES DE FABRICATION DE CIMENTS GEOPOLYMERIQUES ET CIMENTS OBTENUS PAR CES METHODES
Publication
Application
Priority
- FR 9800059 W 19980114
- FR 9700332 A 19970115
Abstract (en)
[origin: FR2758323A1] The invention concerns a method for making geopolymeric cement consisting in producing a reaction mixture containing (parts in weight of dry matter):<u>reagent (I):</u>100 parts by weight of aluminosilicate oxide [Si2O5,Al2O2]9[Si2O5,Al2(OH)3], or simplified below as (Si2O5Al2O2)(IV-V); <u>reagent (II):</u> 30-55 parts of alkali silicate in which the mol ratio M2O/SiO2 ranges between 0.5 and 0.8, M representing Na and/or K or the mixture Na+K; <u>reagent (III):</u> 80-110 parts of basic silicate, in glass state, consisting partly of gehlenite, akermanite and wollastonite; <u>reagent (IV):</u> 150-250 parts of alkali aluminosilicate containing at least 5 % by weight of (Na2O+K2O), preferably at least 8 % by weight; then in hardening said mixture by adding water: After hardening the geopolymeric cements are made of two distinct phases: a) a glass phase having a MAS NMR spectrum for <29>Si with a band ranging between -85 and -89ppm, and a MAS NMR spectrum for <27>Al with a resonance at 54-58ppm; b) a crystalline phase having a MAS NMR spectrum for <29>Si with a band ranging between -90ppm and -115ppm, and a MAS NMR spectrum for <27>Al with a resonance at 57ppm.
IPC 1-7
IPC 8 full level
C04B 12/00 (2006.01)
CPC (source: EP)
C04B 12/005 (2013.01); C04B 28/006 (2013.01); C04B 2111/00017 (2013.01); C04B 2111/00189 (2013.01); C04B 2111/00767 (2013.01); Y02P 40/10 (2015.11); Y02W 30/91 (2015.05)
C-Set (source: EP)
Citation (search report)
See references of WO 9831644A1
Designated contracting state (EPC)
DE ES IT
DOCDB simple family (publication)
FR 2758323 A1 19980717; FR 2758323 B1 19990806; AU 5871298 A 19980807; EP 0891310 A1 19990120; WO 9831644 A1 19980723
DOCDB simple family (application)
FR 9700332 A 19970115; AU 5871298 A 19980114; EP 98902074 A 19980114; FR 9800059 W 19980114