Q.: We have found that we will have to use some hot cement to place a concrete dome on a water storage tank. This cement will be shipped directly from the mill to the project and there will be little time for it to cool after it comes out of the grinding mill. Is there apt to be a problem in using this hot cement?

A.: Hot cement will affect concrete only to the extent that the temperature of the cement influences the final temperature of the concrete, and that is very little. The problem can be controlled through use of normal hot weather concreting procedures. This is discussed in detail in a paper by William Lerch, "Hot Cement and Hot Weather Concrete Tests," published by the Portland Cement Association in 1955.