Miracle concrete: the great modern industry (1909)
Miracle Pressed Stone Co. · Miracle Pressed Stone Co. · leaf 15
be filled with cement. To state this in another way, if the concrete is made up ofsand and gravel, such proportion of cement should be usedwith the sand as is equal to the voids in the sand, and suchquantity of this resulting mortar of sand and cement should beused with the crushed stone or gravel,… … Illustration No. 6—Removing the Block for Curing DETERMINATION OF VOIDS. To determine the voids in the sand, or the material to beused as an aggregate, what is known as the water test isemployed. In preparing for this test the sand or gravel must beperfectly dry. Sand has greater volume when wet. A…
