William A. Radford · Radford Architectural Company · leaf 35
und cement must be used in the man-ufacture of blocks to secure a product thatwill withstand time wear and the gases ofthe atmosphere. What causes certain ce-ments to swell and expand after beingmixed with water is not known definitely.The cause is generally attributed to lackof proportioning of… … Fig. 21—Top of cellar wall at the junction with cellarwindows. Detail shows method of construction. Curing Stone by Steam. The blocks, all made by the dry tampprocess, are placed in a room whose wallsare air tight and the room is opened onlyto admit additional blocks or for thesprinkling six to…
