Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Nanomaterial And Cellulosic Rheology Modifiers For 3D Concrete Printing
Viscosity and static yield stress are significant rheological properties for 3D concrete printing (3DCP), in which process high static yield stress is associated with high buildability and shape stability and low viscosity is associated with extrudability and pumping. The challenge in concrete rheology lies in decoupling the effect of admixtures on these two properties, i.e., achieving high static yield stresses while still maintaining moderately low viscosities. In meeting this challenge, provided here is an additive system of nanoclays and viscosity modifying admixtures that can tailor the rheological properties of cement composites to meet 3DCP performance requirements. Further, because 3DCP is a technology of scales, any additive must meet scalability and stability requirements for construction, i.e., ease of processing in abundance and relatively low cost, and exhibit an extended shelf life.
Nanomaterial And Cellulosic Rheology Modifiers For 3D Concrete Printing
Viscosity and static yield stress are significant rheological properties for 3D concrete printing (3DCP), in which process high static yield stress is associated with high buildability and shape stability and low viscosity is associated with extrudability and pumping. The challenge in concrete rheology lies in decoupling the effect of admixtures on these two properties, i.e., achieving high static yield stresses while still maintaining moderately low viscosities. In meeting this challenge, provided here is an additive system of nanoclays and viscosity modifying admixtures that can tailor the rheological properties of cement composites to meet 3DCP performance requirements. Further, because 3DCP is a technology of scales, any additive must meet scalability and stability requirements for construction, i.e., ease of processing in abundance and relatively low cost, and exhibit an extended shelf life.
Nanomaterial And Cellulosic Rheology Modifiers For 3D Concrete Printing
KAWASHIMA SHIHO (Autor:in) / DOUBA ALAEDDIN (Autor:in)
06.01.2022
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
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SILYL FUNCTIONAL CELLULOSIC RHEOLOGY MODIFIERS FOR SILANES IN CONSTRUCTION APPLICATIONS
| Europäisches Patentamt | 2024