Feedstock and formulas
The gas-concrete mixture is of a simple formula. It is easy to remember and memorize similar to the dough recipe. The mixture contains:
- water;
- portland cement;
- filling material;
- hardening agent;
- caustic soda;
- gas-forming agent.
Like in the dough here they use water, a filler (like flour), soda and an additive for raising the mixture (yeast).
Let us have a closer look at each component, their volumes and quality requirements.
Water
250-300 liters per 1 m3 of gas-concrete.
Check the water due to All-Union State Standard (GOST (ГОСТ)) 23732-79. Any drinking water will do. If you use the water from springs it must be nonsaline, soft or moderately hard.
Water temperature must be 40-60°С. Water heat-up provides for fast setting-up of the mix and will increase endurance of the finished product. Energy consumption for the heat-up is always compensated by higher productivity of the line.
Portland cement
260-320 kg per 1 m3 of gas-concrete
All kinds of Portland cement with GOST 10178-85 made М400ДО and М500ДО are applicable. Due to special features of the cement, ne may change the formula as the technology allows that.
Filling material
250-300 kg per 1 m3 of gas-concrete
Use sand with the following properties as a filler:
- small-grained;
- without impurities: stones, tree branches, sand, everything over 2 mm;
- without silt and clay (or with minimal content of those substances).
If concrete works are using sand from your region, you can use it too. Sand can be substituted with:
- dolomitic powder;
- furnace dust from Central Heating and Power Plant;
- other fine fillers.
Chemical additives
1-3 kg per 1 m3 of gas-concrete
Special chemical additives increase the reaction speed of the mix. The technologist at “AltaiStroyMash” will help to choose the chemical agent as soon as you are ready to launch production. These additives are easily found in any region as they are used even in food industry.
Gas-forming agents
0,5-0,7 kg per 1 m3 of gas concrete
Aluminum powder ПАП-1 and ПАП-2. It is intended for gas concrete production and is known as “silver powder”. A supplier will be easily found in the local or neighboring region and the first batch to launch the production can be obtained directly from our technologist.
Grease for molds
This component is not an ingredient but it improves the properties of gas concrete, namely , its color.
0,3-0,5 liter per1 m3 of gas concrete.
The following options are used as grease:
- emulsifier for greasing molds at production of reinforced concrete structures;
- waste motor oil of the petrol engine (diesel oil leaves a lot of soot);
- vegetable oil or its production residue.
How to make sure that the feedstock was selected well?
Our technologist will assist you in this. He will personally check all the purchased materials or evaluate them due to your description. Moreover, the equipment goes with instructions and formulas together with a multicooker. You will choose the formula suitable for your feedstock and will launch production.
Calculate how much is spent for feedstock — we provide a special Calculator for this.
