With the revival of the Olympic Games in the modern era, the pentathlon returned in two formats. The athletics pentathlon was a modern variation on the original events, with a competition over five track and field events.
Aggregate is defined as a complete amount. An example of an aggregate would be the total number of students in all of one grade level. Aggregate means to combine or mix together. An example of aggregate is to mix ingredients for concrete together.
Aggregates comprise 60 to 75 percent of the total volume of concrete. The type and size of aggregate used depends on the thickness and purpose of the final concrete product. Relatively thin building sections call for small coarse aggregate, though aggregates up to six inches in diameter have been used in large dams.