Mixtures, materials

Are the mixtures used dry?

The printer prints with standard sand concrete, i.e. with what is available for free sale in any construction market. Gypsum, mixtures with mineral additives and fiber can be used (they are also manufactured industrially, all the necessary documents are available). The operating instructions have technological regulations for the mixture, according to which it will not be difficult to prepare the necessary concrete for printing. Also, when buying equipment, we teach you how to prepare working mixtures.

Availability of certificates / test protocols for building mixes used for printing at home?

Printers are printed with standard compositions based on cement of the 400-500 series, i.e. those that are available for free sale almost everywhere. Accordingly, certificates should be asked from sellers (suppliers). It is also possible to use mixtures with mineral additives and fiber (they are also mass-produced, all the necessary documents are available). The operating instructions have technological regulations for the mixture, according to which it will not be difficult to prepare the necessary concrete for printing.

There are test reports. They indicate that the characteristics of the mixtures in terms of strength, moisture resistance and frost resistance correspond to those declared by the manufacturers of the mixtures.

Do you need sand, crushed stone, and other materials to prepare concrete?

Cement, sand - up to 2.5 mm, if crushed stone, then agglomerated, you can add polyester or glass fiber to increase compressive strength and ensure crack resistance, plasticizers.

How much does 1 m3 of the finished mixture with the necessary additives cost? I looked at your website and you have supplements too.

The printer can print with standard sand concrete, i.e. with what is freely available on any construction market. Ie. In an economical version, the finished mixture is comparable in cost to conventional concrete.

Insulation requirements. Is it acceptable to use any materials, or special ones? Application technology?

A purely design solution. The printer only lays concrete, and then what to do with the structure should be decided by the designers (to insulate, polish, paint, plaster). Probably it depends on the purpose of the building and the region of construction.

Is it possible to fill in polyurethane foam and fiberglass reinforcement inside?

The composition of the mixture can be any. The printer prints with any sand concrete, if you use a mixture of M300 - accordingly, the characteristics will be declared.

Is it possible to print without additional reinforcement, for example, with fiber? That is, we are interested in what has already been used, for example, by a Danish company when printing a building in Copenhagen.

Our printers can print with standard M300 sand concrete. Most equipment buyers do just that. You can add plasticizers, which are on sale in your region. The addition of polyester and glass fiber gives a slight increase in strength and provides crack resistance of long parts. That's exactly what the Danes did, catching up with the compressive strength to 350 units.

Is it possible to use small fraction expanded clay as inert?

You can use any non-metallic materials with a fraction up to 2.5 mm.

Requirements for the coating of the finished product? Is it acceptable to use any materials, or special ones?

Printers print non-removable formwork from any sand concrete, for example M300. You can add fiber and plasticizer.

The composition is regulated by the project. The purpose of the permanent formwork is to withstand the pouring of commercial or structural concrete, foam concrete into the inner cavity of the wall. External coatings may be present — this will give an increase in moisture resistance and, accordingly, increase frost resistance.

What are the features of mixtures for this technology?

Our printers can print with ordinary sand concrete. There are in every region.

What brand of concrete is the solution obtained?

The characteristics of the solution depend on the formulation of the mixture. Accordingly, the finished M300 mixture will give the characteristics declared for this concrete. The operating instructions have technological regulations for the mixture, according to which it will not be difficult to prepare the necessary concrete for printing. When buying equipment, we teach you how to prepare the mixture yourself. Another option is to buy ready-made mixtures from our manufacturing partners. We recommend you to watch our video on mixtures https://youtu.be/0V3H1s1KNU4 

What is the composition of the printing solution?

The printer prints with standard M300 sand concrete, i.e. with what is freely available on any construction market

If you use a mixture of M300 - accordingly, the characteristics will be declared.

The operating instructions have technological regulations for the mixture, according to which it will not be difficult to prepare the necessary concrete for printing. When buying equipment, we teach you how to prepare the mixture yourself. Another option is to buy ready-made mixtures from our manufacturing partners. We recommend viewing the article 3D mixtures and practical recommendations for printing.

What materials are used to insulate the cavities inside the frame of the house, so as not to cause the appearance of a dew point? Take into account the climatic conditions of Siberia up to -45 ° C at 78% humidity.

Materials suitable for your conditions should be laid during the design. Various materials can be poured into the cavity and laid before pouring. The dew point is calculated during the design.

Will a simple concrete solution go for this printer?

Yes, the construction printer prints with standard cement-based compounds, i.e. those that can be bought in almost any construction store.

3D construction printers
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