公开(公告)号：WO2022106320A2

公开(公告)日：2022-05-27

申请号：PCT/EP2021/081576

申请日：2021-11-12

Applicant: SIKA TECHNOLOGY AG

Inventor： PARDOS, Yolanda ,  QUESADA,, Javier

IPC: C04B28/04 ,  C04B40/06 ,  C04B2111/00482 ,  C04B2111/00577 ,  C04B2111/22 ,  C04B2111/27 ,  C04B2111/72 ,  C04B40/0608

Abstract: The invention relates to a method for the refurbishment of porous construction materials said method comprising the steps of - mixing water and a composition C, said composition C comprising, a) 100 mass parts of Portland Cement, b) 1 – 18 mass parts, preferably 1 – 10 mass parts, more preferably 1 – 7.5 mass parts, still more preferably 1 – 6 mass parts, especially 1 - 5 mass parts of calcined clay, c) optionally 10 - 250 mass parts of aggregates, - applying the mixture thus obtained to a porous construction material, and - optionally hardening the applied mixture. The invention also relates to a composition comprising Portland cement, calcined clay, and optionally aggregate to be used in a method for the refurbishment of porous construction materials.

公开(公告)号：WO2019038297A1

公开(公告)日：2019-02-28

申请号：PCT/EP2018/072582

申请日：2018-08-21

Applicant: SIKA TECHNOLOGY AG

Inventor： EVANS, Craig ,  MARTIN, Ian ,  PARDOS, Yolanda ,  GARCIA, Ramiro ,  GRANIZO, Luz

IPC: C04B24/28 ,  C04B28/02

Abstract: The present invention relates to a compostion comprising: - at least one waterbased polyurethane dispersion containing ethylene oxide units, - at least one cement, and - at least one mineral filler. The composition can be mixed and applied without coagulation of the polyurethane dispersion. Upon curing, it has a high strength and good adhesion properties, with surprisingly low shrinkage and most surprisingly good water impermeability properties. It is particularly suitable for the use as repair mortar, waterproofing mortar or screed mortar.