公开(公告)号：US20250091963A1

公开(公告)日：2025-03-20

申请号：US18965317

申请日：2024-12-02

Applicant: GCP Applied Technologies Inc.

Inventor： Elizabeth Burns ,  David Geary ,  Dany Vincent ,  Huy The BUI

IPC: C04B40/02 ,  C04B24/06 ,  C04B24/24 ,  C04B41/00 ,  C04B41/53 ,  C04B41/72 ,  C04B103/20

Abstract: Disclosed are surface retarder composition and method for etching cementitious materials which achieve a desirable light “acid etch” look without using muriatic (hydrochloric) acid or sand blasting, removing the human health and environmental concerns. Formulations in accordance with embodiments disclosed herein are easier to remove from formwork or molds after demolding than conventional retarder paints. Surface retarders prevent the hydration of cement particles, which allows the uncured layer of paste next to the form to be removed such as by washing with water or other fluids, or by brushing, revealing aggregates. Also disclosed are molded cement and concrete materials or articles exhibiting such light etch.

公开(公告)号：US20210061721A1

公开(公告)日：2021-03-04

申请号：US16960532

申请日：2019-01-08

Applicant: GCP Applied Technologies Inc.

Inventor： Elizabeth G. BURNS ,  David GEARY ,  Dany VINCENT ,  Huy The BUI

IPC: C04B40/02 ,  C04B41/00 ,  C04B41/53 ,  C04B41/72 ,  C04B24/06 ,  C04B24/24

Abstract: Disclosed are surface retarder composition and method for etching cementitious materials which achieve a desirable light “acid etch” look without using muriatic (hydrochloric) acid or sand blasting, removing the human health and environmental concerns. Formulations in accordance with embodiments disclosed herein are easier to remove from formwork or molds after demolding than conventional retarder paints. Surface retarders prevent the hydration of cement particles, which allows the uncured layer of paste next to the form to be removed such as by washing with water or other fluids, or by brushing, revealing aggregates. Also disclosed are molded cement and concrete materials or articles exhibiting such light etch.