Micro-granulose particulates
AssigneeW. R. Grace & Co.-Conn.
InventorsNeal S. Berke, Antonio J. Aldykiewicz, Jr., Noah D. Budiansky, Arnon Bentur
Life of this patent
Estimating the term…
Abstract
Substantially hydrated cementitious particulates useful for delivering admixtures and additives into adhesives, coatings, paints, and other matrix compositions such as cement, concrete, masonry, mortar, fireproofing, shotcrete, and others. Preferred embodiments include intermixing at least one admixture, water, and hydratable cementitious binder to provide a substantially hydrated hardened mass and comminuting the hardened mass into particulates. Alternatively, or in addition, one or more admixtures may be coated onto the external surface area of the particulates, which are microscopically granulosic, to provide accurate and high level loading.
Claims26
A process comprising:
- intermixing a hydratable cementitious binder, at least one admixture in the amount of no less than 10% based on dry weight of cementitious binder and no greater than 95% based on dry weight of cementitious binder, said at least one admixture comprising a water reducer, superplasticizer, set retarder, set accelerator, air entraining admixture, air detraining admixture, shrinkage reducing admixture, corrosion inhibiting admixture, alkali reactivity reducer, permeability reducing admixture, bonding agent, pumping aid, gas former, colorant, grouting agent, dampproofing agent, biocide agent, or mixture thereof, and water to obtain a hydratable cementitious slurry;
- allowing said slurry to harden into a substantially hydrated mass;
- and comminuting the hardened mass into a plurality of particulates having an average particle diameter no less than 5 micrometers and having an average particle diameter no greater than 6 centimeters, said plurality of particulates thereby comprising at least one admixture in the amount of no less than 10% based on dry weight of cementitious binder and no greater than 95% based on dry weight of cementitious binder, said at least one admixture comprising a water reducer, superplasticizer, set retarder, set accelerator, air entraining admixture, air detraining admixture, shrinkage reducing admixture, corrosion inhibiting admixture, alkali reactivity reducer, permeability reducing admixture, bonding agent, pumping aid, gas former, colorant, grouting agent, dampproofing agent, biocide agent, or mixture thereof.
The particulates of wherein said particulates have a loss on ignition of no less than 5% and a loss on ignition no greater than 45%, as determined in accordance with JIS R 5202.
Dependencies are inferred from the claim text.