. The Ransome book; how to make and how to use concrete. work, affect the final strength. A number of methods can be employed to washaggregates when necessary to do so. Washingtroughs can easily be devised and such troughs canbe made to combine the features both of washer andscreen. A suggestion for such a washing device isshown in an accompanying sketch. This trough isset at an angle sufficient to cause the aggregates tobe tumbled down the trough in which when theright amount of water is supplied continuously atthe upper end through a hose or otherwise, the ma-terial will be washed in tumblin
. The Ransome book; how to make and how to use concrete. work, affect the final strength. A number of methods can be employed to washaggregates when necessary to do so. Washingtroughs can easily be devised and such troughs canbe made to combine the features both of washer andscreen. A suggestion for such a washing device isshown in an accompanying sketch. This trough isset at an angle sufficient to cause the aggregates tobe tumbled down the trough in which when theright amount of water is supplied continuously atthe upper end through a hose or otherwise, the ma-terial will be washed in tumbling about and theforeign matter will be removed and carried awayby the water. Just before the contents leave thetrough the sand and pebbles are separated by thescreen fixed at the lower end of the trough. More elaborate washing outfits have to be installedat commercial gravel plants sometimes. On largejobs it is necessary to arrange better facilities forwashing aggregates than are provided by the simpletrough just suggested. MAKE AND HOW TO USE CONCRETE. THE RAN SOME BOOK — HOW TO
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Keywords: ., bookcentury1900, bookdecade1910, bookidranso, booksubjectconcrete
