Aggregates, which account for 60 to 75 percent of the total volume of concrete, fall into two distinct categories: fine and coarse-grained. You can check with your local aggregate suppliers about the types of aggregates they offer, but it's important to know what exactly you need. We are going to explore the different types of aggregates and their uses. Be sure to choose the right aggregate for the intended purpose.
Making sure you use the right tools and having the best type of topsoil or aggregates for your home and garden is a good start. For all your garden and construction needs, contact Grabco and learn about all the different types of aggregates they offer. According to the source of the aggregate, it can be divided into natural aggregate, artificial aggregate and recycled concrete. Only 15-34% of the aggregates in zone 1 will pass through a 0.6 mm screen; 35-59% of the aggregates in zone 2 will; 60-79% of zone 3 will; and 80-100% of zone 4 will.
To obtain a good concrete mix, aggregates must be clean, hard and strong particles, free of absorbed chemicals or coatings of clay and other fine materials that could cause concrete deterioration. The purpose of fine aggregate is to fill the voids in the coarse-grained aggregate and act as a workability agent. Natural sand is generally used as fine aggregate, silt, stone dust and clay also fall into this category. The use of slag aggregates from iron and steel production in construction dates back to the Romans who used crushed slag from crude iron production of that time to build their roads.
However, the use of slag is no longer limited to roads, but slag aggregates are widely used in all types of civil works. In your contract, construction or purchase agreement, the term “maximum aggregate size” refers to the smallest sieve that 100% of your aggregate can pass through. Recycled concrete as an aggregate will generally have higher absorption and lower specific gravity than natural aggregate and will produce concrete with slightly higher drying shrinkage and creep. Aggregates are a broad category of materials, such as sand, gravel, crushed stone, slag, and recycled concrete.
In general, the 40 mm size aggregate is used for normal strengths and the 20 mm size is used for high strength concrete. Aggregate categories include gravel, sand, recycled concrete, slag, topsoil, ballast, type 1 MOT, and geosynthetic aggregates (synthetic products commonly used in civil engineering projects used to stabilize terrain). If you are looking for medium strength concrete, get 40mm aggregates, but if you are looking for high strength, 20mm is best. Therefore, we can say that one must definitely know the aggregates in depth to study more about concrete.
Leave Reply