7 Standards For Assessing the Quality of Aggregate
You might think that rocks are rocks, if you are not in the construction industry. The truth is, nonetheless, that there is a vast difference between different kinds of stone and types of mineral deposits. Not all stone make great aggregate, and pit site or a potential quarry is assessed extensively for the quality of its aggregate before digging, drilling, or blasting take place. So how is the quality of aggregate appraised? This can be a question that impacts not only quarry owners and geologists, but the customers who have to purchase quarry due to their building projects.
Till. Till is the eroded pieces of the stone that have accumulated somewhere downstream from a rock deposit and can be studied before quarrying begins. Geologists study till so that you can get a photo of the stone it came from. Particles that are larger mean higher quality aggregate.
Boulder size. Geologists need to determine how large the boulders are once the rock formation is detected. Bigger boulders have fewer opportunities included and are cohesive, and are so considered stronger and higher quality aggregate.
Reactive minerals. It is probably low quality aggregate, and therefore not desirable, if it’s a lot of some of these matters.
Fracture frequency. The more cracks and fractures there are in rock deposits, the weaker the rock is in general. Of course, it is easier to mine, since it’s naturally coming but break frequency is a significant indicator of the quality of the aggregate.
Shape and surface texture. If the stone breaks apart into angular, sharp pieces, with surfaces that are rough, that is an indicator of high quality aggregate. Rounder, pieces that are smoother are indicative of typically an indication of low quality aggregate, and weaker stone that crumbles easily.
Hardness and abrasion resistance. Rock has to be very difficult to break, to be high quality aggregate. Sure, it makes the quarriers’ jobs but it supplies aggregate that won’t collapse or crumble under the pressure of well- travelled roads or occupied buildings. Since it’ll resist being changed by the weight that’ll be pressed on it, a rough surface of the stone also makes for higher quality aggregate.
Resistant to dislocation. This really is a measure of how rapidly a stone kind erodes. If it erodes pretty fast when exposed to air, water, or an opposing force, it’s low quality aggregate, but if it resist erosion and does not break down quickly, then it may be considered high quality aggregate.
These are just some of the standards that building managers, quarry operators, and geologists use to judge the Amersham Aggregates quality of the construction aggregate. You’ll find others, but as you are able to see, not all aggregate is created equal.