Stones and Aggregates

Start with rocks and stones

Begin with the rock mind map, which groups rocks as igneous, sedimentary and metamorphic. It also includes granite and marble. Use the branches to practice recalling the groups and examples before moving on to the stone materials.

The Stones mind map brings natural and artificial stone together with rock groups and materials such as limestone. A related note covers many of the same terms, including granite, slate and marble. Compare the note with the map to see how each format organizes the material.

Move on to aggregates

The Aggregates mind maps offer ways to study classification. One groups examples such as sand, gravel, crushed rock, broken brick and slag. It also includes source, size, shape and texture. The other covers weight, rock sources, size and shape. Look at both maps, then try recalling a few categories without looking.

The Test on Aggregate map introduces test names including flakiness index, elongation index, specific gravity and aggregate crushing value. A flowchart covers determining unit mass and the voids among aggregate particles. There is also a flowchart on sieve analysis.

Practice with the available formats

This topic page has no quizzes. Instead, turn a map branch into a question, such as which examples appear under an aggregate category, and check your answer against the resource. The WisDOT Spec Flashcards provide another way to work through named stone and sand specifications.

Use the topic within the unit

Stones and Aggregates is a section of the Construction Materials unit in Civil engineering and construction. Keep the rock, stone and aggregate resources together as you study the section: the maps show different ways to group the material, while the note, flashcards and flowcharts offer other formats for practice. Choose a resource and make a short list of terms to check again.