Cement in its Conventional Uses: Problems and Possibilities [and Discussion]

Although Portland cement is used almost exclusively in the construction industry it can nevertheless form the basis of certain special products that perform similarly to cast iron, timber or aluminium. In this paper, some of the parameters that characterize Portland cement are discussed in relation to the requirements of the user. It is acknowledged that as a consequence of improved manufacturing processes modern Portland cements are not identical with those produced several decades ago, but there are misconceptions about these changes, which are discussed.