Poured Concrete Walls vs. Concrete Block
Concrete block was used to build thousands of basement foundation walls in Cincinnati and other parts of the nation in the 1950's building boom. Many of the builders and block layers failed to realize that block mortar typically only has 1/3 the strength in tension as concrete. Those block walls have a long horizontal crack in the bed joint about four feet from the floor. But you can build block walls that withstand the test of time.