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Aggregates and Decorative Pebble

Aggregates are broadly a category of coarse particulate material including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates. Aggregates are the most mined materials in the world and while a lot of aggregates are used for their physical properties like concrete or pavement aggregates other like the Yuleba aggregates are decorative. The Yuleba aggregates have a gemstone quality are uncrushed and have been widely used for exposed concrete surfaces and landscaping.

Due to the relatively high hydraulic conductivity value as compared to most soils, aggregates are widely used in drainage applications such as foundation and French drains, septic drain fields, retaining wall drains, and road side edge drains. Aggregates are also used as base material under foundations, roads, and railroads. In other words, aggregates are used as a stable foundation or road/rail base with predictable, uniform properties (e.g. to help prevent differential settling under the road or building), or as a low-cost extender that binds with more expensive cement or asphalt to form concrete.

The Yuleba deposit has Petrified wood literally “wood turned into stone” is the name given to a special type of fossilized remains of terrestrial vegetation. It is the result of a tree or tree-like plants having completely transitioned to stone by the process of permineralization. All the organic materials have been replaced with minerals(mostly a silicate, such as quartz), while retaining the original structure of the stem tissue. Unlike other types of fossils which are typically impressions or compressions, petrified wood is a three-dimensional representation of the original organic material.

While petrified wood is found around Roma, Surat and Chinchilla is quite large in size The Yuleba petrified wood while generally ranging in size from a few mm in size and typically 20mm but often as large as 200mm has a very high silica content and can be easily cut and polished.
Aggregates like those found in the Yuleba deposit which are high in silica content have both good aesthetic and physical properties making them ideal for exposed aggregate concrete or decorative applications. The naturally rounded shapes minimise sharp edges found in crushed aggregates.