The phrase "a concrete set" is correct and usable in written English.
It can be used when referring to a specific, defined collection of items or elements that are tangible or clearly identifiable.
Example: "In our research, we analyzed a concrete set of data collected from various sources to draw our conclusions."
Alternatives: "a specific collection" or "a defined group".
On the basis of our survey results, students generally appreciated the fact that they were performing experiments as they are done in research settings, without having a concrete set of expected results (Table 2).
Include a table with a concrete set of deadlines for finishing major components of the project.
But interpreting the agreement into a concrete set of rules is proving an immensely complicated task.
But we were able to nail down a concrete set of interests within the Thomas Chapel community present there.
The main aim of this paper is to determine a concrete set of success factors to be considered when designing an eParticipation initiative.
Diplomats involved in the negotiations, wary that the Iranians might be trying to stall, are now discussing how to present a concrete set of demands that Iran must first meet.
Circuits also provide a concrete setting in which to learn the key concept of "equivalence" --- an important aspect of abstraction.
By providing a concrete setting of a business organization, Marx's scenario is exactly the kind of test-bed that lends itself to contextual analysis.
The research issues, analytical concepts, and theoretical arguments associated with the proposed model are explicated and illustrated in a concrete setting--the evolution of village election in an agricultural town in northern China, from 2000 to 2008.
Clapper counters that allowing the federal court to decide the constitutionality of the FAA in this circumstance would result in the court examining the effects of the FAA in the abstract, not in a concrete setting.
Women Leading in AI says that it is offering policy makers a head start by proposing a very concrete set of ten principles to get AI back on track and make it inclusive.
