Pozzolan-based additive agent and uses thereof
OwnerPhilippe Fortininventor
Life of this patent
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Abstract
An additive agent comprising pozzolan and methylcellulose, for the preparation of a concrete mixture of a hygroscopic vegetal-based concrete material comprising lime and the additive agent is described herein. The lime may be hydrated lime and the pozzolan may be a metakaolin. Proportions of each element are between 50% to 80% by weight of lime, between 20% and 50% by weight of pozzolan and between 0.3% and 1.5% by weight of methylcellulose. A concrete mixture and a solid concrete material made from such mixture include hemp hurds as an aggregate. The additive agent may also be used in the preparation of a concrete mixture or of a binder formulation for use in the concrete mixture. A variety of applications including prefabricated construction components are made from this material.
Claims17
An additive agent for preparation of a solid concrete material, of a concrete mixture or of a binder formulation for the concrete mixture, consisting of metakaolin and methylhydroxyethyl cellulose.
A combination for preparation of a solid concrete material, of a concrete mixture or of a binder formulation for the concrete mixture, consisting essentially of:
- an additive agent consisting of metakaolin and methylhydroxyethyl cellulose;
- a binder;
- and
- an aggregate having vegetal fibers.
A solid concrete material consisting essentially of:
- an additive agent consisting of metakaolin and methylhydroxyethyl cellulose;
- a binder having hydrated lime;
- and
- an aggregate having vegetal fibers,
- wherein the aggregate and the additive agent are dispersed within the binder;
- and
- wherein the additive agent and the binder form a dry portion, the dry portion having:
- between 20% to 90% by weight of hydrated lime;
- between 10% and 80% by weight of metakaolin and
- between 0.2% and 1.5% by weight of methylhydroxyethyl cellulose.
A concrete mixture consisting essentially of an additive agent consisting of metakaolin and methylhydroxyethyl cellulose;
- a binder having hydrated lime;
- an aggregate having vegetal fibers;
- and
- water,
- wherein the aggregate is coated at least partially by a paste made of the additive agent, the binder and the water;
- and
- wherein the additive agent and the binder form a dry portion, the dry portion having:
- between 20% to 90% by weight of hydrated lime;
- between 10% and 80% by weight of metakaolin;
- and
- between 0.2% and 1.5% by weight of methylhydroxyethyl cellulose.
A binder formulation for a concrete mixture of a hygroscopic vegetal-based concrete material, the binder formulation consisting essentially of:
- an additive agent consisting of metakaolin and methylhydroxyethyl cellulose;
- and
- hydrated lime, and
- wherein proportions of the binder formulation are of:
- between 20% to 90% by weight of hydrated lime;
- between 10% and 80% by weight of metakaolin;
- and
- between 0.2% and 1.5% by weight of methylhydroxyethyl cellulose.
Dependencies are inferred from the claim text.