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Novel cement chemistries

A chemical reagent, curing glue technology, applied in the field of cement, can solve the problems of changing abundance and geographical dependence of source

Active Publication Date: 2019-01-04
SOLIDIA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main problem with SCM is source-to-source variability, abundance, and geographical dependence of source

Method used

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  • Novel cement chemistries
  • Novel cement chemistries
  • Novel cement chemistries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0156] A 4"x8" cylinder was made with a cement consisting primarily of 80% crystalline phase melilite, 5% dolomite and 12% amorphous phase. The particle size distribution of the cement is 3 microns for d10, 11 microns for d50, and 75 microns for d90. A mixture of cement, sand and gravel is mixed with a saturated solution of tartaric acid and cast into a mold. The samples were cured for two days and subjected to compression testing. The strength is 2000psi.

[0157] By making such adjustments to the gelled material, in some cases it was found that the modified gelled material (e.g., addition of Al, Mg, and / or Fe) 2 It cannot be cured under the reaction of carbon dioxide source, and when the curing agent is tartaric acid, oxalic acid or some 2 Synthetic chemical reagents do react when they are synthesized.

[0158] In other embodiments, by CO 2 Synthetic chemical reagents can be organic acids or can be produced from CO 2 Compounds synthesized alone or possibly with other p...

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Abstract

A cementitious composition comprises a crystalline phase and an amorphous phase, and an activator selected from the group of materials comprising inorganic bases. In some cases the crystalline phase is gehlenite. In some cases the crystalline phase is anorthite. In some cases the amorphous phase is amorphous calcium aluminum silicate. In some cases the activator is elected from OPC (1-70 wt%), free lime (1-20 wt%), calcium hydroxide (1-20 wt%), and alkali hydroxides (NaOH, KOH 1 to 10 wt%), individually or in combination. A low lime cementitious material is cured by reaction with a curing reagent that includes a reagent chemical that is synthesized from CO2. Examples of such a reagent are oxalic acid and tartaric acid.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to co-pending U.S. Provisional Patent Application Serial No. 62 / 280,296, filed January 19, 2016, and co-pending U.S. Provisional Patent Application Serial No. 62 / 281,260, filed January 21, 2016 and interests, the entire contents of which are incorporated herein by reference in their entirety. technical field [0003] The present invention relates generally to cementitious / pozzalonic materials, particularly cements that cure in the presence of activators, and cements that cure by reaction with carbon dioxide. Background technique [0004] Various types of cement have been used in construction for thousands of years, including concrete. Conventional cement sets in the presence of water. [0005] The 1st century BC Roman architect and engineer Marcus Vitruvius Polio wrote his Ten Books on Architecture. (Vitruvius, Ten Books on Architecture, Harvard University Press, 1914) writing about ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B12/00C04B12/04C04B28/26C04B40/02
CPCC04B28/006C04B28/188Y02P40/18C01F11/18C01P2004/80C04B40/0231C04B7/153C04B7/243C04B12/005C04B28/28C04B28/10Y02W30/91Y02P40/10C04B24/04C04B7/02C04B14/041C04B18/08C04B18/141C04B22/062C04B22/064C04B24/06
Inventor 瓦西特·阿塔坎
Owner SOLIDIA TECH
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