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«UNIVERSAL-P-2»

Plasticizer - hardening accelerator

Description

The addition has a set of properties:

The main properties - plastic coating, the acceleration of hardening;

Additional properties - increase frost resistance and impermeability of concrete;

Increased mobility of b / s
P1-P3
Reducing water flow
to 12%
Reduction in cement consumption up
to15%
Set the strength
1st day – no more 50%
Frost resistance
An increase of 1-2 marks
Water resistance
An increase of 1-2 levels
The interaction with the reinforcement
passivation fittings

















* - When using water reduction composition, relative to the control.

Sphere of application

All types of concrete, including prestressed concrete and reinforced concrete products specifically responsible, in particular:

  • In the manufacture of all types of precast / concrete structures and products of heavy concrete;
  • In case of intensive in-plant work schedule, to increase the turnover of shapes and acceleration razopalublivaniya products;
  • In the manufacture of products on the hard concrete mixtures;
  • In the production of concrete on porous fillers;

Advantages

  • The high efficiency of use;
  • Stable performance in all classes of concrete, from B7, 5 and above, with mobilities of P1 to P3;
  • Stable operation over a wide temperature range TVO: from 40 ° C to 80 ° C;
  • Allows you to switch to a "light" of the isotherms or eliminate TVO;
  • When using a plasticizing effect - reduces the vibration of products facilitates compaction of the concrete.
  • Increases water-resistance and frost resistance of concrete;
  • Additive is not inflammable. Virtually odorless;


*** - The value depends on the type of concrete, cement properties, and several other factors.

The dosage and administration of supplements

From 0.5 to 0.6% by weight of dry cement additive substance. Limiting the concentration of additive in the slurry - 10%. Insoluble in water balance - no more than 3%.

10% aqueous solution does not freeze to - 3 ° C. After freezing and thawing at a positive temperature - does not change its properties.

Introduced into the concrete mix only with the mixing water. Stirring of the solution produced by any method adopted by the company.

At ambient temperatures below +7 ° C, it is necessary to closely monitor the degree of dissolution of additives, in order to avoid a "blockage" of devices feeding and dosing. Raising the temperature of water to dissolve the 40 - 60 ° C leads to a stable, accelerated dissolution of the additive.

Commodity description

aggregate state crystalline powder
Color From light yellow to dark brown
PH-metric units., Not less 5
The content of Cl ¯,% not more 0,1
Mass fraction dry matter
% Of at least
98
Storage temperature, ° C from-30°С to +35°С
Packing Polypropylene bags of 20 kg.

Safety and transportation

   The product is a 3-hazard class according to GOST 12.1.007 (moderately hazardous).

    Working personnel must use personal protective equipment according to GOST 12.4.011. Eye Contact - rinse thoroughly with water and, if necessary - see a doctor.

   Do not discharge into drains, soil or bodies of water! Disposal of supplements must be made according to local regulations.

Compatibility with other products

Manufacturer investigated compatibility only with the products' SKT-standard. " Compatible with products of other manufacturers - has not been tested.

"UNIVERSAL-P-2" compatible:

  with "HIDETAL-P-7" - hardening accelerator;

  with "Winter-P-3" - antifreeze, to reduce the W / C for winter  concreting;

  with "HIDETAL-P-8" - to improve and F W;

Warranty and storage conditions

Shelf life - 5 years from date of manufacture. After expiration, the additive can be used as intended, after laboratory testing.
           For storage conditions of special requirements. Should be excluded from the soaking bags additive. The product is shipped in box cars and vehicles.

The effectiveness of additives

The tests were carried out in all the supplements leading institutions industry, including NIIZhB, Belarusian National Technical University, NIISK. Below are the results of a comprehensive inspection supplements simulating different working environment.



                                                                      Analysis of shear strength

     The study of the kinetics of growth of the strength of concrete, modified "UNIVERSAL-P-2" was investigated in three aspects:

plasticized mixture into the OU hardening;

water reduction mixture  hardening;

water reduction mixture at various modes of TVO.

In-depth research conducted on formulations containing different amounts of cement: 250, 350, 450 kg/ m³.

Cement: PC500 D20;

Sand Mk = 2.43;

Crushed stone: granite, fr. 5-20mm;

Additive "Universal P-2" - 0.6% of dry matter by weight of cement, - in all tests;

Selection shall be held in accordance with GOST 10180-90 "Concrete. Methods for determining the strength of the check samples. "

Mobility,cm.

Cement consumption

Volume weight of the concrete mix,

kg / m ³

Compressive strength, MPa, aged

1 day

3 day

7 day

28 day

The control sample without the additive

1,0

250 / 2350

6,2

12,5

19,2

22,8

3,5

350 / 2375

8,3

22,5

29,1

36,9

3,0

450 / 2390

13,3

27,8

38,6

44,9

Plasticized mix with the "UNIVERSAL-P-2" (0.6% of the dry.)

10,5

250 / 2345

7,0

15,5

22,0

26,6

16,0

350 / 2360

10,9

25,3

31,7

37,9

18,0

450 / 2370

13,8

30,2

44,4

50,3

Water reduction mix with the "UNIVERSAL-P-2" (0.6% dry.)

2,0

250 / 2360

13,4

18,7

22,5

25,0

2,5

350 / 2380

19,6

28,2

34,4

39,7

3,0

450 / 2410

26,1

35,7

44,8

47,3



Efficacy of action of an additive as accelerator of process of concreting at ТВО defined on the samples made of water reduced admixtures (2-4см), similar to that are used in the previous research. Two modes have been tested: full, duration of 15 hours and step, duration of 10 hours with mediate endurance at temperature 50°С.





Mode and temperature ТВО

Duration of the seasons of steaming, h

Full (15 hours)

Step (10 hours)

Preconditioning

5

2

Rise to 50 ° C.

0

0,5

Exposure at 50 ° C

0

1,5

The rise of up to 80 ° C

2

1

Isothermal at 80 ° C

6

3

refrigeration

2

2

Concrete strength, MPa at 4 hours after GUT

250 kg of cement

With additive

13,2

not tested

«UNIVERSAL-P-2»0,6%

16,5

14,8

350kg of cement

With additive

21,2

not tested

«UNIVERSAL-P-2»0,6%

24,0

23,5

450 kg of cement

With additive

29,4

not tested

«UNIVERSAL-P-2»0,6%

33,7

32,4

Прочность бетона , Мпа, в возрасте 24 часов после ТВО

250 kg of cement

With additive

17,6

not tested

«UNIVERSAL-P-2»0,6%

22,9

23,3

350 kg of cement

With additive

27,3

not tested

«UNIVERSAL-P-2»0,6%

30,8

33,6

450 кг цемента

With additive

37,5

not tested

«UNIVERSAL-P-2»0,6%

40,5

41,2

Прочность бетона , Мпа, в возрасте 28 суток после ТВО

250 kg of cement

With additive

26,2

not tested

«UNIVERSAL-P-2»0,6%

30,2

32,5

350 kg of cement

With additive

37,2

not tested

«UNIVERSAL-P-2»0,6%

41,7

42,0

450 kg of cement

With additive

48,0

not tested

«UNIVERSAL-P-2»0,6%

53,1

53,2


These studies clearly show that the "UNIVERSAL-P-2" can significantly reduce the time-isothermal mode.



           Evaluation of protective properties of concrete with respect to the steel reinforcement



Evaluation of protective properties of concrete with respect to the steel reinforcement



The protective properties of concrete with a complex additive "UNIVERSAL-P-2" with respect to the steel reinforcement was evaluated by the method described in STB 1168-99 "Concrete. Control method for corrosion of steel reinforcement in concrete and protective properties of the concrete "(Belarus).

For the manufacture of prototypes used concrete mixture P1 with cement consumption of 350 kg / m ³. Cement – without additive. The age of the samples - 28 days ou hardening. Steel reinforcement - 10mm rods of steel St3 GOST 5781. Size prototype 70 * 70 * 140.

indicator name

The normalized

value STB 1168-99 Actual

The actual value

Steady potential, mV

not below  -550

-321

Passivationpotential, mV

not below-450

-302

Potential destruction, mV

450……600

515

The current density at the potential of +300 mV, mA / cm ²

not below10,0

1,31



                                                                       Safety and transportation

      The product is a 3-hazard class according to GOST 12.1.007 (moderately hazardous).

     Working personnel must use personal protective equipment according to GOST 12.4.011. Eye Contact - rinse thoroughly with water and, if necessary - see a doctor.

     Do not discharge into drains, soil or bodies of water! Disposal of supplements must be made according to local regulations.