cements, mastic defined in 1909 yearcements, mastic - Cements, Mastic;
cements, mastic - Pulverised baked bricks, quicklime, and wood ashes, equal parts; mix thoroughly, and dilute with olive-oil; this mastic hardens almost immediately in the air, and never cracks beneath water.
Mastic for wood block floors
Mastic for bedding wood sills on stone, etc
Mastic for kitchen range and stove workFine sharp sand, 28 lb.; powdered litharge, 14 lb.; quicklime, 4 lb.; linseed-oil to make a mass like putty.
Mastic Cement for Covering the Fronts of Houses50 parts, by measure, of clean dry sand, 50 of limestone (not burned) reduced to grains like sand, or marble dust, and 10 parts of red lead, mixed with as much boiled linseed-oil as will make it slightly moist. The bricks to receive it should be covered with 3 coats of boiled oil, laid on with a brush, and suffered to dry before the mastic is put on. It is laid on with a trowel like plaster, but it is not so moist. It becomes hard as stone in a few months. Care must be exercised not to use too much oil.
Serbat's MasticFinely pulverised sulphate of lead is pounded together with 1 part of old linseed-oil in a suitable apparatus. Repeat the operation twice, adding each time 1 part of finely pulverised pyrolusite. It is then preserved in a stone vessel closed with wet bladder. Another direction for preparing this mastic is as follows: Triturate 5 parts of zinc oxide and 5 of sulphate of lead with about 4 of linseed-oil, then add gradually 10 parts of finely ground pyrolusite and a like quantity of colcothar, and pound the whole in a cast-iron mortar with an iron pestle, adding gradually 100 parts more of pyrolusite and a like quantity of colcothar. The cement is good when sufficiently thick, and at the same time so flexible that it can be rolled out between the fingers without breaking. If the cement has become hard add some more oil and work it thoroughly with the iron pestle.
near cements, mastic in Knolik
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