Medium bed mortar

Details Medium bed mortar Medium bed mortar

1994-02-07

1996-04-23

Marcantoni, Paul

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

156 63, 156 71, 52389, C04B 1420

Patent

active

055099610

ABSTRACT:
The present invention provides for a medium bed mortar for setting of large tiles. The mortar comprises from 25 to 75 parts by weight of a mortar base composition and 1 part by weight of expanded vermiculite. The presence of the vermiculite in the mortar base supports the trowel ridges of the medium bed mortar of more than 3/8 inch to 5/8 of an inch in height and increases the open time of the medium bed mortar to allow longer working times. In an aspect of the invention there is provided a method for setting of tile on a supporting surface. The method comprises trowelling onto the supporting surface a medium bed mortar composition comprising from about 25 to 75 parts by weight of a mortar base composition and 1 part by weight of expanded vermiculite by means of a ridged trowel to produce ridges of the medium bed mortar composition of greater than 1/4 inch in height and setting the tile in the medium bed mortar to adhere the tile to the supporting surface. The presence of the vermiculite in the mortar base supports the trowel ridges and increases the setting time of the medium bed mortar to allow longer working times.

REFERENCES:
patent: 4142911 (1979-03-01), Ellis et al.
patent: 4280848 (1981-07-01), Ellis et al.
patent: 5185389 (1993-02-01), Victor

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