Dry mixtures for producing acidresistant cement and mortar compositions
Abstract
Abstract WITH THE USE OF CONDENSED ALUMINUM PHOSPHATES AS HARDENERS, A COMPOSITION CAN BE PREPARED WHICH CONTAINS ALL THE INGREDIENTS NECESSARY FOR MAKING AIC-RERESISTANT WATER GLASS CEMENTS AND MORTARS. THE COMPOSITION CONTAINS AS ESSENTIAL INGREDIENTS AND INERT FILLER MATERIAL, A WATER SOLUBLE ALKALI METAL SILICATE AND, AS THE HARDENER, AN ALUMINUM PHOSPHATE WITH A MOLAR RATIO OF P2O5:AL2O3=1.1 TO 3 WHICH HAS BEEN SUBJECTED TO A THERMAL TREATMENT BY HEATING IT IN A FIRST STAGE TO AT MOST 400*C. AND IN A SUBSEQUENT STAGE TO AT MOST 750*C., THE HEATING BEING CONTINUED IN BOTH STAGES UNTIL THE WEIGHT REMAINS CONSTANT; A WORKABLE WATER GLASS CEMENT OR MORTAR IS OBTINED FROM SUCH COMPOSITIONS BY SIMPLY ADDING WATER. THE NECESSARY AMOUNT OF WATER CAN BE REDUCED AND THE WORKABILITY IMPROVED BY INCORPORATING IN THE COMPOSITION A NON-IONIC OR ANIONIC SURFACTANT. FOR BETTER STORABILITY THE HARDENER OR THE ALKALI METAL SILICATE ARE ADVANTAGEOUSLY HYDROPHOBIZED.
Inventors
- 👤 H Neises
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| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
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