Lightweight mortar components for 3D printing.

Claims

------28 / 05 / 2569------(OCR)OCR09WP1. Lightweight mortar composition for 3D printing consists of: - Cement 20-50% by weight - Fine aggregate 30-60% by weight - Lightweight aggregate or lightweight admixture 8-15% by weight - Expansion agent 2-10% by weight with specific characteristics: - Lightweight aggregate or lightweight admixture contains at least 50% biomass ash or activated carbon - Lightweight aggregate or lightweight admixture has a particle size smaller than 600 microns (at least 20%) - Biomass ash or activated carbon has a stable carbon content of at least 60% - Expansion agent consists of calcium sulfate and calcium oxide or calcium sulfoaluminate. Cement 2.Lightweight mortar compositions for 3D printing as per Patents 1 and 2, where the cement is composed of one or more of Portland cement, hydraulic cement, blended cement, high aluminacement or aluminate cement, calcium sulfoaluminate cement, or alkaline activated cement, and the blainefineness of the cement is between 2,700 and 5,600 square centimeters per gram.

3. Any one of the lightweight mortar compositions for 3D printing as per Patents 1 and 2, where the cement is a blended cement with a clinker content not exceeding 92% and the blainefineness of the cement is between 3,500 and 5,000 square centimeters per gram. 4.Lightweight mortar compositions for 3D printing as per any of Patents 1 through 3, where the fine aggregate consists of one or more pieces of sand, crushed sand, crushed limestone, recycled aggregate, or inert particles that do not react with cement, with an average particle size larger than 600 microns at less than 10% and a fineness modulus between 2.3 and 5.

55. Lightweight mortar compositions for 3D printing as per any of Patents 1 through 4, where the lightweight aggregate or lightweight admixture consists of one or more pieces of biomass ash or activated carbon at least 50%. Lightweight mortar compositions for 3D printing as per any of Patents 1 through 5, where the expansion agent consists of one or more pieces of calcium oxide 50-90% by weight of the expansion agent and calcium sulfate 10-40% by weight of the expansion agent, or consists of expansion agents in the calcium sulfoaluminate cement group with a calcium sulfoaluminate cement content of 5-20% by weight of the expansion agent.

7. Any lightweight mortar composition for 3D printing under Relief 1 contains one or more additives or compounds that include retardants, thickeners, flow enhancers, redispersible powder, or fibers.

8. Any lightweight mortar composition for 3D printing under Relief 7 contains one or more retardants that are sodium, silicofluoride, sucrose, or gluconate functional group compounds.

9. Any lightweight mortar composition for 3D printing under Relief 7 or 8 contains one or more thickeners that are cellulose or starch ethers.

10. Any lightweight mortar composition for 3D printing under Reliefs 7 through 9 contains one or more flow enhancers that are naphthalene, melamine, or polycarboxylate. 11.

11. Lightweight mortar components for 3D printing as per any one of Patents 7 through 10, in which the mortar composition includes one or more redispersible powders of the acetate, acrylic, vinyl acetate, epoxy, or ethylene vinyl acetate group, with a content of 0-5% by weight of dry mortar.

12. Lightweight mortar components for 3D printing as per any one of Patents 7 through 11, in which the mortar composition includes fibers consisting of one or more natural, synthetic, or metallic fibers, with a content per fiber type between 0.5-4% by weight of dry mortar.

13. Lightweight mortar components for 3D printing as per any one of Patents 7 through 12, in which the water ratio by weight of water to dry mortar is between 0.18 and 0.3, and the water-mixed mortar has a wet density of less than 1,800 kg / m³ and a dry density of less than 1,600 kg / m³.

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