Show I Ca Cem Cement ment nt Mortar Preferred for Hollow Tile Work Hollow building tile should be set with cement mortar composed om posed by measure of one part portland cement to not more than three parts clean sharp sand to which there may be added hydrated lime not exceeding IP 15 per cent by volume of ot the cement The percentage of t lime added Is always figured on the quantity of the cement used therefore 15 per cent centIs Is equal to about sixth one-sixth part by measure of ot the cement The lime specified Is not needed to tomake tomake tomake make the mortar stronger but to make male It more plastic and und easier to handle hundle Mortar containing lime will Adhere better to the tile makes a u neater Job and results In a saving In labor Too much lime must not be used as It weakens the mortar A straight hf lime mortar however rich the mixture Is not suitable for tor setting hollow tile tUe A sand containing a quantity of loam must not nut he bE used for cement pIn plastering or stucco Sand containing a little clay may maybe maybe be used If It the grains are Arc not coated r |