Expert System for Selecting Concrete Constituents


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Title: Expert System for Selecting Concrete Constituents

Author(s): J. R. Clifton and B. C. Oltikar

Publication: Special Publication

Volume: 98


Appears on pages(s): 1-24

Keywords: aggregates; alkali-aggregate reactions; artificial intelligence; computer programs; concrete durability; corrosion; freeze-thaw durability; mix proportioning; sulfate attack; General

Date: 3/3/1987

A large amount of specialized factual and heuristic knowledge on the relations between the design of concrete mixtures, including the constituents, and the durability of concrete has been gained through research and field experience. Effective dissemination of this knowledge should result in fewer incidents of premature deterioration of concrete. Expert systems appear to be an effective means for transferring the knowledge on the durability of concrete obtained through laboratory and field studies and experiences to engineers and designers responsible for the design, construction, and maintenance of concrete structures. Durcon is a prototype expert system being developed to give recommendations on the selection of constituents for durable concrete. The purpose of developing Durcon is to demonstrate the application of expert systems to improve the process of selecting construction materials. Four major deterioration problems are covered by Durcon: freezing and thawing, corrosion of reinforcing steel, sulfate attack, and alkali-aggregate reactions. This report discusses the approach being followed and the progress being made in developing Durcon. In addition, model systems for recommendations for concrete exposed to corrosive environments and for preventing alkali-aggregate reactions are presented.