materials Topic


The principal ingredients that make up the concrete mix are: cement, fine aggregate, coarse aggregate, water, chemical admixtures, and mineral admixtures. Concrete used in construction may also contain reinforcing bars, welded wire fabric (wire mesh), and various reinforcing fibers. The quality of the ingredients, their proportions, and the way they are mixed all affect the strength of the concrete.

ACI Web Pages

Advanced Tips
Type Example Notes
Fuzzy kettle~ Contain terms that are close to the word kettle, such as cattle
Wild cat* Contain terms that begin with cat, such as category and the extact term cat itself
Exact-Single orange Contain the term orange
Exact-Phrase "dnn is awesome" Contain the exact phase dnn is awesome
OR orange bike Contain the term orange or bike, or both. OR, if used, must be in uppercase
orange OR bike
AND orange AND bike Contain both orange and bike. AND must be in uppercase
Combo (agile OR extreme) AND methodology Contain methodology and must also contain agile and/or extreme
Results Per Page:
Limit the search results with the specified tags
Limit the search results modified within the specified time
Limit the search results from the specified source
Search results must exactly contain the keywords