Concrete Plasticizer LR120

Mechanism of Action

Concrete Plasticizer LR120 operates on advanced polycarboxylate ether (PCE) technology.

Its molecules have active side chains and branches that, once added to a fresh concrete mix, adsorb onto the surfaces of cement particles, forming a uniform coating layer.

• This coating produces electrostatic repulsion between cement particles, preventing clumping and promoting a homogeneous structure.
• The spatial configuration of side chains arranges water molecules evenly around the particles, significantly reducing mix viscosity and increasing flowability.
• Negative-charge induction, enhanced by the PCE molecular structure, ensures continuous dispersion of cement particles and prevents agglomeration throughout mixing.

Quality check: High-quality LR120 should have a uniform brown color and smooth texture. Any dark shade, suspended solids, or signs of impure raw materials indicate poor quality and loss of superplasticizing performance.

Dosage

• Recommended dosage range: 0.8% – 1.5% of the cement weight.
• Adjust based on project requirements, climate, cement type, aggregates, and target workability.
• Higher dosages should only be applied after consulting Zarloo Chemical’s technical specialists, as overdosing can delay initial set — especially with special cements like sulfate-resistant cement.

Properties & Benefits

1. Prevents bleeding – improves cohesion and prevents aggregate-water segregation.
2. Increases slump – higher workability without extra water.
3. Improves mix uniformity – better control over water-cement ratio and reduced settlement.
4. Enhances compressive strength – supports uniform hydration and lower W/C ratio.
5. Reduces cement usage – improved mix efficiency leads to same strength with less cement.
6. Compatible with supplementary materials – usable alongside fly ash, silica fume, slag, and natural pozzolans without property conflicts.

Applications

Ideal for:

• Casting in dense formworks with high reinforcement levels.
• Prestressed and post-tensioned concrete.
• Pumpable mixes and concretes transported over long distances.
• Normal or variable temperature concreting.
• Precast concrete units such as curbstones, blocks, and artificial stones.
• Structures requiring low permeability and high durability in aggressive environments.

Safety Instructions

Although LR120 is classified as low-hazard, standard protective measures are essential:

• Wear gloves, safety glasses, and a mask when handling.
• Avoid direct contact with skin and eyes — rinse with plenty of water if contact occurs.
• Keep out of reach of children and pets.
• In case of allergic reaction or skin irritation, seek medical attention immediately.

Storage Guidelines

• Shelf life: At least 1 year in original sealed packaging.
• Conditions: Store in a cool, dry place; avoid frost, excessive heat, and prolonged direct sunlight.
• Temperature range: +10°C to +30°C for optimal performance preservation.

Packaging Options

• 20 L plastic jerrycans
• 220 L steel/plastic drums
• 1000 L IBC tanks

Standards Compliance

• ASTM C494
• ASTM C1017 / C1071M
• ISIRI 2930