J.C. Hain, Engineer of Masonry Construction, C.M. & St. P. R. R., Chicago, Ill.
Appears on pages(s):
Can anything new be said about sand? The less experienced know what sand is suitable for mortar, and what is not. The Romans made concrete 2000 years ago, and were familiar with the requirements of a good sand, one of its important ingredients. Clean, coarse sharp sand is generally conceded to be the best. With this in view, it is not surprising that apparently little can be said. Although the subject may seem to have been decided thousands of years ago, I still believe there is much to be learned. I can best illustrate my stand by calling your attention to a few sands, with more or less peculiaritiesm and compare their laboratory tests with a standard.