What sand is needed for the Foundation: river or pit? The choice of sand for construction

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2018-03-23 06:30:14

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Before starting construction work, a pre-calculate the necessary amount of material. This is the correct approach to such a serious case. But at this stage raises a lot of questions. One of them is: what kind of sand is needed for a Foundation?

The Choice of such material should be given special attention because it is an important component, one of the main components used in the manufacture of concrete. The quality of the mixture will depend on the longevity of the Foundation, the future Foundation of the house. The modern market offers a huge range of sand, both natural and artificial. How to decide that it did not hurt the Foundation, will tell the article.

what kind of sand needed for the Foundation

The Basics of selecting sand

Even ignorant in matters of construction, people will be able to guess that the Foundation is suitable only clean sand. Initially it can contain various organic elements: twigs, grass and so on. For construction works of such material is not suitable, so should be seeded sand, clean from foreign debris.

However, pouring can not do, if we are talking about such impurities as lime or clay. Similar to clean sand is much harder so when buying building materials it is necessary to immediately pay attention. Allowable clay content in the sand no more than five percent of the total weight, especially if done by the mortar for the Foundation. Otherwise, the structure after some time, will shrink, crack and not be particularly reliable.

Check the purity of the sand

Before you choose what type of sand is needed for the Foundation, you should test its purity. This is usually done using a simple method. Need any empty clear bottle (glass or plastic). In her one-third of the poured sand and fill half way with water. Then intensively shaken the bottle to components thoroughly mixed with each other. After that, put it on and wait five or ten minutes. If the water in the bottle became cloudy and dirty, the sand is not suitable for the Foundation. If the surface has a foreign material layer, which exceeds half a centimeter, then such material also can not be taken.

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the varieties of sand

Now consider what are the different types of sand.

Types of sand for embankment under the Foundation

To ensure the reliability of construction designs, according to the norms of SNiP, it is necessary to apply a granular mixture. The market implements the sedimentary rocks in three types, depending on their place of obtaining. It's sand:

  • Career;
  • River;
  • Sea.

To answer the question, which one is most suitable for Foundation pads, is familiar with the characteristics and nuances of each type.

Sand Quarry

Is the raw material mined in quarries, breaking rocks. An important indicator of the reliability and durability of the pit sand is the setting the humidity. A valid ratio of one to five percent. Appropriate humidity can be determined visually. Sand will not work to sculpt a tight ball – it will simply crumble.

The cheapest material is career building sand. The price ranges from three hundred to seven hundred rubles per cubic meter. This is due to its low quality due to the large amount of impurities of clay and other substances. However, this raw material is in great demand.

Types of quarry sand

Depending on the type of processing raw quartz is classified as follows.

1. Sandy soil. This crude mixture with various impurities. Typically, it leveled plots and filled the trench.

2. Washed sand. Extracted from the flooded deposits with application of hydromechanical equipment. The technology allows to collect the mixture without any impurities and unnecessary components. This material is used in the production of roads, paving, concrete, brick and concrete products.

3. Seeded sand. Its clear technical and mechanical way of large particles and stones. Typically, this raw material is used for making masses of plaster, mortar masonry and cast stone products.

sand for construction

River sand

These raw materials are extracted from the bottom of freshwater rivers. It seldom are organic compounds and impurities. Why river sand is considered a pure and natural product that is designed for multipurpose use. It is an ideal material for laying the Foundation, creating drains and dilution solutions necessary for the inside of your home. Due to the natural grinding river sand has a perfectly smooth shape and fine fraction in the range of two millimeters.

Thanks to all these advantages, this material becomes a universal and desirable, but quite expensive raw material for the Foundation. So, the price of building sand extracted from the river, can vary from seven hundred to one thousand rubles per cubic meter.

Classification of river sand

The Raw material from the bottom of the river can be very different from each other. Therefore, you should deal with a variety of grains. They can be of several fractions from 0.7 to 5 millimeters. The bulk of small grains greatly shrunk and compacted, so it is suitable only forlightweight buildings. Also distinguish the following types of granular river material.

1. Coarse sand. This is pebbles with a size of about five millimeters. Get them by breaking rocks with a special crushing equipment.

2. Coarse-grained sand. Has an unobtrusive neutral color, is produced in the dry rivers. Ideal for finishing and decorating the premises.

3. Washed river sand. are pieces of medium size. Have gray or yellow, because their composition includes the oxides of iron and silicon.

river sand washed

The Positive side of river sand

River sediment have several positive qualities that are of great importance for the construction of the Foundation. They meet the technical and aesthetic demands, do not rot and are not exposed to aggressive environment. River sand is characterized by high moisture resistance and excellent sound insulation. It is also safe and environmentally friendly material.

For the construction of multi-storey buildings is only used large particle type, and for capital homes will fit the average baby. River sand is ideal for landscaping areas, playgrounds, landscaping and decorating rooms.

river sand or quarry

Sea sand

Water baby – it is also exactly the material needed for the Foundation. Sand river initially no better, and sometimes worse. This is due to the presence of organic impurities (algae, shells), and foreign objects. But sea sand be sure to clean from outside and washed so it is clean and high quality. Due to this, the material is the most expensive, and not everyone is willing to pay for it. It is more appropriate to use marine aggregates for construction where it is sold nearby and cheaper.

Sand Fractions

Any sand can be classified according to its size. Experts distinguish the following varieties of fractions.

  • Very fine. This is the grit size of about 0.7 mm. They are suitable for the arrangement of playgrounds and unsuitable for construction.
  • Fine. Grains in the size range is from 0.7 to 1.0 mm. This loose material. You can't use this sand for building, but it will be good for making lean concrete.
  • Small fraction. it consists of grains of size 1.5-2.0 mm. When using it increases the expenditure of the cement mixture.
  • Medium. Grains (2.0-2.5 mm) can be used to create standard concrete.

sand seed

  • Major. Sand particles in the amount of up to ten millimeters. This fraction is ideal for breeding high-quality concrete mix to be used in large-scale construction.
  • Very large. Particles larger than three millimeters in diameter. They are added to the pad Foundation and used for the mass distribution of the structure.

The Choice of sand for the Foundation

So what is this sand, river or career? Experts agree that for the construction of foundations most suited to the first option. It will create a layer that will increase strength, stability, prevent “walking” and the formation of cracks.

But river sand will not everyone. In this case you are allowed to use the career chips, but not necessarily washed. Also suitable for sand-gravel mixture, which improves the quality of the composition for laying under the pillow.

Required quantity of sand

Usually five parts of sand, take one part of cement. But this calculation is applicable if the solution is made of only these two components. The ratio of sand, gravel and cement for the Foundation to be completely different. As a rule, they are taken in the following proportions: four parts sand, two parts gravel and one of cement.

construction sand price

As you can see from the calculations, the sand will always need to bring more than other components. The sheer number of materials is directly dependent on the height of the pillow and the building itself. Sand is better to buy with a small margin to not have to buy at the wrong time. The remains can be adapted for the preparation of solutions in the walls or masonry.

Summing up

Answering the question of what sand is needed for the Foundation, it should be noted that the ideal option considered river average grains fraction. This material has excellent properties for construction purposes. It allows you to build the most solid Foundation that will stay long and will be a great base for construction.

Buy sand must have reliable producers, so as not to stumble on low-quality raw materials. It is recommended to check the material before buying on the humidity level and the amount of impurities. Also pay attention to match the size of the procurement. As a rule, one cubic meter should be about half a ton of sand.


Article in other languages:

BE: https://tostpost.com/be/hatn-tul-nasc/12808-yak-pyasok-patreben-dlya-padmurka-rachnoy-abo-kar-erny-vybar-pyasku-dl.html

DE: https://tostpost.com/de/gem-tlichkeit/12813-welcher-sand-f-r-das-fundament-ben-tigt-fluss-oder-karriere-auswahl-vo.html

ES: https://tostpost.com/es/la-comodidad-del-hogar/12821-qu-la-arena-que-se-necesita-para-la-fundaci-n-de-river-o-de-carrera-la.html

KK: https://tostpost.com/kk/domashniy-uyut/12811-anday-m-azhet-rgetas-sh-n-zen-nemese-mansapty-ta-dau-sh-n-m-salu.html

PL: https://tostpost.com/pl/komfort-domu/12808-jaki-piasek-potrzebny-do-fundamentu-rzeka-lub-kariery-wyb-r-piasku-do-.html

PT: https://tostpost.com/pt/o-aconchego-do-lar/12802-qual-a-areia-precisa-para-a-funda-o-rio-ou-de-carreira-a-escolha-de-ar.html

TR: https://tostpost.com/tr/domashniy-uyut/12814-hangi-kum-ihtiyac-i-in-vak-f-bir-nehir-veya-kariyer-se-im-i-in-kum-in-.html

UK: https://tostpost.com/uk/domashn-y-zatishok/12811-yakiy-p-sok-potr-ben-dlya-fundamentu-r-chkoviy-abo-kar-rniy-vib-r-p-sk.html






Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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