ASG is a sand and gravel mixture. It is used for the manufacture of mortars. It should be said that solutions in which ASG is present are excellent material for arranging roads.
general information
ASG is a material with good chemical and physical characteristics. Compared to other mixtures, it is inexpensive. That is why it is very popular among building materials. Two types of sand-gravel mixtures can be distinguished: natural (ordinary) and enriched.
Production
ASG is a natural material. It is mined in places where there are sea or river beaches. Work in quarries is carried out using excavation equipment. An enriched sand-gravel mixture is produced by adding a certain amount of gravel to the initially mined volume. When the material is removed from the earth, you can see that there are large grains of gravel in it. Such a natural mixture includes in a significant amount, in addition to gravel, sand. ASG of this composition is usually used to backfill the top layer of the road. It can also be used in drainage systems.
Characteristic
There are some standards that govern the ratio in which gravel is present in the total volume of ASG. Thus, the presence of bulk material with a diameter of 5 mm should not exceed 95%, but the minimum amount should be at least 5%. The main impurities that make up ASG are dust or clay. By standards, their number should not exceed 5%. Gravel, which is present in this natural mixture, has a number of useful properties. This, in particular, hardness, density, frost resistance. One of the main advantages of ASG is its affordable cost. Compared to other natural minerals, the mixture is very cheap. Thus, with small funds, you can purchase an impressive amount of material. But a mixture of sand and gravel, despite the fact that there is a wide variety of their natural compounds, is used in construction only as auxiliary materials. For a process such as leveling and surface planning, it is best to use enriched raw materials.
Use of ASG
Concrete, as you know, is used for the construction of a variety of structures. This is due to the fact that it is considered a universal material. Concrete consists of the following components: water, cement and aggregate. To improve the performance of the solution, in some cases chemical additives are added. One of the most popular aggregates for concrete is sand and gravel. ASG, screenings, brick scrap are used only in some brands. The presence of one or another component depends on the nature of the work performed. In order for the concrete mix to turn out to be of high quality, it is necessary to observe the proportions and production technology. Do not forget about the quality of the components used. The proportion between cement and sand and gravel may be different, it all depends on the purpose of the concrete. Usually it is 1: 4 or 1: 3 - one portion of cement and three or four sand-gravel mixtures. This ratio is suitable for fine-grained concrete. Basically, the ratio between ASG and cement depends on the quality of the future solution. An important role is played by the size of the fractions included in the sand-gravel mixture. If concrete will be used to fill the foundation, the ratio between the components will be 1: 8 (one part of cement and eight - sand-gravel mix).
It is not necessary to add
crushed stone, gravel separately to the concrete, which includes ASG. But everything is not so simple. Much depends on the ratio of gravel and sand in the concrete mix. Usually at the enterprises where they buy the mortar, you can find out details about the used ratio of ASG and cement. When making it at home, you should remember one caveat. Sand should be added to concrete only when gravel prevails in its structure.
OGPS concrete
The composition of the concrete mixture from OGPS is different from that of the ASG. To obtain a solution, it is necessary to combine the following components: water (0.5 parts), cement (1 part), OPGS (4 parts). All these proportions should be taken according to the weight of the materials. In some cases, it is recommended to add sand separately. But it all depends on the already existing percentage of this component in the OGPS and on the brand of cement. Exactly the same recommendation should be applied for the manufacture of concrete from ASG. Everything is very interconnected. Depending on the ultimate purpose of the use of concrete, you need to consider the ratio of sand in ASG and the brand of cement itself. In what proportion the components of the sand-gravel mixture are contained, you can find out at the time of purchase. But if such an opportunity does not exist, then you can determine this at home. To find out the relationship between gravel and sand, it is necessary to sift the ASG through a sieve.