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PENETRON ADMIX SB®

DESCRIPTION : PENETRON ADMIX® SB (Soluble Bag integral crystal- line waterproofing admix) is added to the concrete mix at the time of batching. PENETRON ADMIX® SB consists of Portland cement and various active, propri- etary chemicals. These active chemicals react with the moisture in fresh concrete and with the by-products of cement hydration to cause a catalytic reaction, which generates a non-soluble crystalline formation throughout the pores and capillary tracts of the concrete. Thus, the concrete becomes permanently sealed against the penetration of water or liquids from any direction. The concrete is also protected from deterioration due to harsh environmental conditions.
PENETRON ADMIX® SB has been specially formulated to meet varying project and temperature conditions (see Setting time and strength). Consult with a Penetron technical representative for additional detailed support on your project.



Reservoirs

Sewage and water treatment plants

Secondary containment structures

Tunnels and subway systems

Underground vaults

Foundations

Parking structures

Swimming pools

Precast, cast-in-place and shotcrete applications


DIRECTIONS FOR USE

Dosage rate:

PENETRON ADMIX ® SB is designed to be dosed at the rate of one soluble bag per cubic yard (or cubic meter) of concrete. For most mix designs in use, this falls within the range of acceptability of 1% by weight of cement. Consult with Penetron’s Technical Department for assistance in verifying the appropriate dosage rate and for further information regarding enhanced chemical resistance and optimum concrete performance for your project.

Mixing:
PENETRON ADMIX® SB must be added to the concrete at the time of batching.


The sequence of procedures for addition will vary according to the type of batch plant operation and equipment. The following are some typical mixing guidelines. For more detailed information on dosing procedures, contact your Penetron representative.


Ready mix plant - Dry batch operation:Add PENETRON ADMIX® SB directly into the drum of the ready-mix truck and immediately before charging the drum with 60%-70% of the required mix water, along with 300-500 lb (136-227 kg) of aggregate. Mix the materials for 2-3 minutes to ensure the PENETRON ADMIX® SB is distributed evenly throughout the mix water. Add the balance of materials to the ready-mix truck in accor dance with standard batching practices.
Ready mix plant - Central mix operation: Ideally, PENETRON ADMIX® SB should be added directly into the central mix drum before all other ingredients. However, when this is impractical or unsafe, PENETRON ADMIX® SB can be added directly into the drum of the ready-mix truck immediately before charging with concrete. The dosed concrete should be allowed to mix in accordance with ACI guidelines or for a minimum of 70 revolutions at standard mixing speeds (approximately 5 minutes) to ensure even distribution of PENETRON ADMIX® SB throughout the concrete.
Precast batch plant: Consult with a Penetron technical representative to determine if PENETRON ADMIX® SB would suit your precast batch plant operation or if one of our other packaging solutions may be more appropriate.

NOTE: It is important to obtain a homogeneous mixture of PENETRON ADMIX® SB with the concrete. For further information regarding the proper use of PENETRON ADMIX® SB for a specific project, consult with a Penetron technical representative.

Setting time and strength:
The setting time of concrete is affected by the chemical and physical composition of ingredients, temperature of the concrete and climatic conditions. Retardation of set may occur when using PENETRON ADMIX® SB. The amount of retardation will depend upon the concrete mix design and the dosage rate of PENETRON ADMIX® SB. However, under normal conditions, PENETRON ADMIX® SB will provide a normal set concrete. Concrete containing PENETRON ADMIX® SB may develop higher ultimate strengths than plain concrete. Trial mixes should be carried out under project conditions to determine setting time and strength of the concrete.
Concrete treated with PENETRON ADMIX® SB should be placed and finished in accordance with good concrete practices. ACI guidelines and recommendations should be observed.


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