StroyMechanika LTD
6, Lyulin str., Rudakov stlm., Tula, Russia
Tel: +7 4872 701 400

E-mail:
sales.foamconcrete@gmail.com

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News

24 February, 2014
Signing of contract for Albania
StroyMehanika LTD signed the contract with a company ALART shpk, Albania.
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December 5, 2013
Supply of equipment to Nigeria

"StroyMehanika" LTD signed the contract with a Nigerian company "KINGSDALE MULTI-RESOURCES LIMITED" for supply of machinery on "Sistrom" technology.
More >>

November 11, 2013
Sales contract for supply of equipment to Iraq
On November 8, 2013 the company "Stroymechanika" OOO signed the sales contract with company "ISOCRETE Factory" for supply of equipment for foam concrete, polystyrene concrete to Iraq.
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Setting accelerator (granulated calcium chloride) UniPell™

Setting accelerator (granulated calcium chloride) UniPell™ is used in the production of foam concrete, polystyrene concrete, concrete, wall masonry units, paving tiles and others.

The "headache" in the production of concrete articles (gas concrete and foam concrete) are molds, where the cement mortar is hardened and set. The mortar should be in molds for a long time at definite temperature and moisture to get enough (normal) strength. The problems are arisen at temperature pull down, when the time of molds "downtime" increases in several times.

It is required to decrease cement consumption without strength losses to low prime cost of products.

Thus, nowadays they say that the application of new product UniPell™ are more profitable economically and technologically on the Russian market.

UniPell™ are granules of calcium chloride with 94-98% of base substance and minimal admixtures content that is the guarantee against shrinkage of foam concrete, polystyrene concrete and concrete products and leaching on them.

Chemical properties

Designation Calcium chloride (CaCL2) Magnesium (MgCL2) Alkalis (in terms of NaCl) Admixtures (excluding moisture) pH
Granted parameters min 94% max 0,5% max 1,5% max 0,2% 7,0-10,5
Standard parameters 97% 0,2% 0,4% 0,1%  

Application of UniPell™ allows:

  • The adding of 2% UniPell™ from cement weight in the mortar reduces cement consumption in 10% at constant strength and reduces setting time in three times;
  • To unload molds in three time quicker;
  • Adding of UniPell™ in number of 2% from cement weight double the strength of one-day concrete;
  • Adding of 2% UniPell™ increases surface concrete strength in 1,5 - less spalls are on the articles, better ready products are;
  • The ultimate concrete strength increases in 10% (or 20% at constant moldability and water reducing in 8%);
  • Adding of 1% of UniPell™ from cement weight affect the cement setting like setting temperature rise in 15-20 ° (data according to tests results of Mironov S.., Malinina L.., NIIJB; Kiseleva N.N., Gorkiy construction engineering institute);
  • Adding of UniPell™ in number of 2% from cement weight "restores" old cements.

Influence of the agent UniPell™ on concrete strength

Concrete age, (days) Relative concrete strength with agent UniPell™, % from R28 without agents, on cements -400
On Portland cement On portland-slag and portland-pozzolana cement (type IP-cement)
Without agents With agent UniPell™, %1 Without agents With agent UniPell™, %
1 2 3 1 2 3
1 15 20 23 27 8 15 17 20
2 27 40 45 50 18 24 30 37
3 40 50 55 60 25 30 40 45
5 55 65 70 80 40 50 55 60
7 70 77 85 90 50 55 60 70
14 85 95 100 105 70 80 90 95
28 100 105 115 115 100 110 120 120
1 - % from cement weight in concrete

Concrete strength growth in % at different setting temperatures and agent 2% UniPell™

Concrete age, days % of concrete strength growth at temperature, °
+5 +15 +25
2 85 65 45
3 70 50 35
7 50 30 20
28 30 15 10

Based on various tests of acceleration of concrete setting made in laboratories the data presented in tables are average parameters drawn by the research institute of reinforce concrete. The kinetics of strength growth was set on concretes made from mixes with slump flowability of 6-8 cm.

 

the equipment for bulk material operation
the equipment to produce polystyrene concrete
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In Russia:
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Voronezh
Nizhniy Novgorod
Ryazan
Irkutsk
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In Belorussia:
Minsk
 
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