| 摘要 |
A FLEXIBLE PROTECTIVE AND WATERPROOFING MEMBRANE INCLUDES FLEXIBLE POLYMER SHEET HAVING AN OPEN-TEXTURED SURFACE ON EACH OF ITS OPPOSITE FACES DEFINING INTERCONNECTED INTERNAL VOIDS OPEN TO THE ATMOSPHERE AND CAPABLE OF BEING IMPREGNATED BY A CEMENTITIOUS BONDING MATERIAL. IN THE DESCRIBED PREFERRED EMBODIMENTS, EACH OF THE OPEN-TEXTURED SURFACES IS A FIBROUS SURFACE LAYER, AND WHEREIN AT LEAST ONE OF THE FIBROUS SURFACE LAYERS IS PRE-IMPREGNATED WITH A CEMENTITIOUS BONDING MATERIAL BASED ON PORTLAND OR OTHER WATER HARDENABLE CEMENT WHICH IS SUBSTANTIALLY IN A NON-HYDRATED CONDITION.
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