Show r ConCI ete on the Fal m r Here is a simple method of test testing testing mg ing sand to find out whether hether it has hasto hasto hasto to much clay Guth w ith it to make a 1 des r able concrete Put 1 t inches of the t tr table h sand into i g pint pmt preserving preserving pr jar r rill rail the jar with pith cle clew water ster to within an inch indi of the top Fasten the lid hd until th Shake Shahe the jar thoroughly whole hole ISell is well sell mixed Set the jar a at aside ar aside aside t r side and end allow the contents to settle The sand will III go to the botton The clay cla and lo loam will form a la cr er on top of or the sand and If more than three 1 eights of a i inch of clay or loam shows s hows the sand is i not clean enough for making concrete Either Lither a ner ne I found th the source of sand must be or sand must be washed to nd rid it of the surplus of cHy clay and loins 10 farmers Bulletin 1279 F r obtainable on application application cation to the United States Dep Deput t meat ment of Agriculture Wn Washington D DC DC DC C gees gi gl es directions for a simple ar for tor washing s sand and grael gra as well ell as other valuable ble sug- sug suggestions sug suggestions relative e to plain concrete fot fOI farm use |