Cementitious compositions having fast-setting properties and inhibited shrinkage
Patent 4157263 Issued on June 5, 1979. Estimated Expiration Date: 
May 4, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 4, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2399411 Cementitious compositions having fast-setting properties and inhibited shrinkage Patent #: 4045237 InventorsAssigneeApplicationNo. 05/902697 filed on 05/04/1978US Classes:106/695With other cement material (e.g., Portland, calcium sulfate, etc.)ExaminersPrimary: Poer, JamesAttorney, Agent or FirmInternational ClassesC04B 7/32 (20060101)C04B 7/00 (20060101) C04B 28/06 (20060101) C04B 28/00 (20060101) AbstractA cementitious composition which when mixed with water is capable of setting rapidly into a hard mass of high compressive strength without substantial shrinkage during setting and early hardening, which exhibits reduced long-term shrinkage, and which possesses a high degree of impermeability to liquid and vapor, is composed of a particulate mixture of portland cement, a calcined gypsum, and high alumina cement. Alternatively, such a cementitious composition can be composed of a particulate mixture of a high alumina cement and pressure calcined gypsum. Additional components such as surface active agents, gas generating or releasing agents and aggregate can be employed, if desired, for the selective improvement of specific properties. | |
