1975. Special Concretes, Mortarsand Products – Portland Cement Association. Ed.:portland Cement Association. ISBN.:0-471-67432-X. Inglês, p. 482
1974. MASLOW, P. Chemical Materials for Construction. Ed.: Structures Publishing Company. ISBN.: 0-912336-07-2. Inglês, p.580
1955. MILLS, A. P.; HAYWARD, H. W. Materials of Construction – Sixth Edition. Ed.: John Wiley & Sons. Inglês, p.650