In the Pakistani construction industry, waterproofing has traditionally been a post-construction activity. Membranes, coatings and sealers are applied after concrete has cured. This approach has limitations — these materials can be damaged, degrade over time and require periodic replacement.

BETOCRETE®-CP350-CI offers a different strategy. Instead of treating concrete after it’s placed, this powder admixture is added during batching. It becomes part of the concrete matrix, providing protection that lasts as long as the structure itself.

Understanding the Product

BETOCRETE-CP350-CI is a grey powder that combines two technologies:

Crystalline Effect

Active chemicals react with water and cement byproducts to form crystals that block capillary pores and micro-cracks. These crystals are insoluble and become part of the concrete matrix.

Corrosion Inhibition

The formulation includes compounds that help protect steel reinforcement. This is particularly relevant in environments where chlorides may penetrate the concrete.

Packaging Options

· 20 kg bags for batching plants

· 3 kg water-soluble bags for mixer truck dosing

How It Works

Crystalline Reaction

When concrete is mixed, cement hydration produces various byproducts. The crystalline chemicals in BETOCRETE-CP350-CI react with these byproducts — and with any moisture that later enters the concrete — to form needle-like crystals. These crystals grow into pores and micro-cracks, reducing the pathways through which water can travel.

The reaction remains active over time. If new cracks develop later, moisture can trigger additional crystal growth, helping to seal the damage.

Corrosion Inhibition

In the event that water and chlorides reach the reinforcement, the corrosion inhibitor migrates to the steel surface and forms a protective molecular layer. This can help reduce the rate of corrosion.

Where It Adds Value

Coastal Environments

In Karachi and other coastal areas, airborne chlorides pose a risk to reinforced concrete. This admixture helps reduce chloride ingress and provides corrosion protection for steel.

Basements and Below-Grade Structures

For foundations and basements where groundwater is present, integral protection can reduce reliance on external membranes. The protection is built into the concrete itself.

Water and Wastewater Facilities

Approved for drinking water contact, the product is suitable for:

· Potable water tanks

· Reservoirs

· Treatment plants

· Swimming pools

Northern Infrastructure

Bridges, tunnels and retaining walls in colder regions face freeze-thaw cycles. The improved frost resistance helps concrete withstand these conditions.

Industrial Floors

Warehouses and factories benefit from concrete that resists water and chemical penetration.

Application Instructions

At the Batching Plant

· Dose BETOCRETE-CP350-CI onto the aggregates

· Mix dry for at least 30 seconds

· Add water and cement

· Mix for at least 45 seconds

In a Mixer Truck

· Dose directly into the mixing drum

· Mix for approximately 1 minute per m³ of drum capacity

· Minimum mixing time: 5 minutes

Important Restrictions

Prohibited Cement Types

CEM III/B and CEM III/C cements should not be used with this admixture.

Fly Ash

Lignite fly ash is of limited suitability. Preliminary testing is recommended.

Setting Behavior

In rare cases, the admixture can influence setting. RUXOLITH-T5 (VZ) is available for controlling setting time.

Surface Crystals — Normal Condition

The TDS notes that BETOCRETE-CP350-CI modified concretes may have crystals on the surface. This is a normal indication that the reaction is taking place. The crystals can be brushed off if desired and do not affect performance.

Frequently Asked Questions

Q) Is this a surface coating?

No. It is an integral admixture that becomes part of the concrete.

Q) Can it be used for roof applications?

For new construction, yes. For existing roofs, surface-applied treatments like AQUAFIN-IC are more appropriate.

Q) Does it replace membranes?

In many below-grade applications, yes. For extreme hydrostatic pressure, consult a design engineer.

Q) How long does protection last?

The crystalline protection remains active as long as the concrete exists. Dormant chemicals can reactivate if moisture returns.

Q) Is it safe for drinking water?

Yes. DVGW W-347 and W-270 certified.

Conclusion

BETOCRETE®-CP350-CI offers a practical way to enhance concrete’s natural resistance to water and chloride ingress. By adding it during the batching stage, contractors can build protection into the material itself — reducing the need for separate membrane applications and helping extend service life. For projects ranging from infrastructure to water storage, it represents a thoughtful approach to durability.

Ready to Enhance Your Concrete From the Start?

Contact Aquafin Pakistan for technical consultation, mix design assistance and product supply.

Serving: Karachi | Lahore | Islamabad | Rawalpindi | Faisalabad | Multan | Across Pakistan

Website: aquafinpakistan.com