Binding geopolymeric mixture

• Main Authors: SKVARA FRANTISEK DOC. RNDRSC, ALLAHVERDI ALI
• Format: Patent
• Language: Czech; English
• Published: 12.03.2003
• Edition: 7
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF NATURAL STONE

Pojivov geopolymern sm s tvrdnouc p°i teplot ch 15 a 95 .degree.C, ur en pro v²robu kaÜ , malt a beton sest vaj c z 35,01 a 93,90 % hmotn. elektr rensk ho pop lku s m rn²m povrchem 100 a 600 m.sup.2.n./kg, 0 a 40 % hmotn. l tky s m rn²m povrchem 200 a 600 m.sup.2.n./kg, vybran ze skupiny tvo°en mlet²m sl nkem portlansk ho cementu, vysokopecn granulovanou struskou, 5 a 15 % hmotn. alkalick ho aktiv toru, jako je sm s sodn ho a/nebo draseln ho vodn ho skla a NaOH i KOH, vyj d°en jako % hmotn. Na.sub.2.n.O i K.sub.2.n.O, s pom rem SiO.sub.2.n./Na.sub.2.n.O i K.sub.2.n.O je rovno 0,1 a 1,0, a 1,1 a 9,99 % hmotn. hlinit p° sady obsahuj c nejm n 35 % hmotn. Al.sub.2.n.O.sub.3.n., jako jsou nap°. hlinitany v penat , sl nek hlinitanov ho cementu, gibbsit, boemit, bezvod² Al.sub.2.n.O.sub.3.n., kalcinovan² nebo nekalcinovan² bauxit, hlinit² j l, sl n, hydroxid hlinit², sl da, s v²hodou m hlinit p° sada v ce ne 50 % hmotn. stic menÜ ch ne 60 .mi.m.\ In the present invention there is disclosed a binding geopolymeric mixture hardening at temperatures within 15 to 95 degC and intended for producing slurries, mortars and concretes. The mixture comprises 35.01 to 93.90 percent by weight of fly ash with specific surface area within the range of 100 to 600 me2/kg, 0 to 40 percent by weight of a substance with specific surface area within the range of 200 to 600 me2/kg being selected from the group consisting of ground Portland clinker and blast furnace granulated slag,5 to 15 percent by weight of an alkali activator, such as a mixture of sodium and/or potassium water-glass and NaOH or KOH expressed as percent by weight of Nai2O or Ki2O with SiOi2/Nai2O or Ki2O ratio being equal to 0.1 to 1.0, and 1.1 to 9.99 percent by weight of an aluminium additive containing at least 35 percent by weight of Ali2Oi3 such as calcium aluminates, alumina cement clinker, gibbsite, boehmite, anhydrous Ali2Oi3, calcined or non-calcined bauxite, aluminous clay, calcareous clay, aluminium hydroxide or mica. Preferably, more than 50 percent by weight of the aluminium additive particle size is less than 60 microns. A Binding geopolymer mix, hardening at temperatures from 15 to 95 degrees C, designed for the production of paste, malt and concrete consisting of 35.01 to 93.9% by weight of fly ash with a specific surface of 100 to 600 m /kg, 0 to 40% by weight of material with a specific surface of 200 to 600 m /kg, selected from a group composed of ground Portland clinker, granulated blast-furnace slag and 5 to 15% of an alkali activator, for example a mix of sodium and/or potassium silica glass and NaOH or KOH, expressed as % by weight of Na2O or K2O, with a ratio of SiO2/Na2O or K2O equalling 0.1 to 1.0, and 1.1 to 9.99% by weight of aluminous admixtures containing at least 35% by weight of Al2O3, for example calcium aluminate, sintered aluminous cement, gibbsite, boemite, anhydrous Al2O2, calcinated or non-calcinated bauxite, aluminous clay, calcareous clay, aluminium hydroxide or mica. Advantageously the aluminous admixture should have more than 50% of particles smaller than 60 microns.