This section is from the book "Cyclopedia Of Architecture, Carpentry, And Building", by James C. et al. Also available from Amazon: Cyclopedia Of Architecture, Carpentry And Building.
The place and manner of making breaks or joints in floor construction at the end of a day's work, is a subject that has been much discussed by engineers and construction companies. But there has not been any general agreement yet as to the best method and place of constructing these joints. Wherever joints are made, great care should be exercised to secure a bond between the new and the old concrete.