HINCOL CHIP SEAL EMULSION RS2(Bulk)

HINCOL Chip Seal Emulsion RS2 is a Rapid Setting Cationic Bitumen Emulsion primarily used for Surface Dressing (Chip Seal) on roads. It bonds crushed aggregate chippings to the road surface, improving skid resistance, waterproofing the pavement, and extending road life. It is used in Single, Racked-in, Double, Inverted Double, and Sandwich Chip Seal applications — on national highways, state roads, and rural roads.

• RS1 (Low Viscosity): Viscosity 20–100 sec @ 50°C, min 60% binder. Used as Tack Coat between bituminous layers — thin bonding film, rate 0.2–0.3 kg/m², no aggregate involved.
• RS2 (High Viscosity): Viscosity 100–300 sec @ 50°C, min 65% binder. Used for Surface Dressing/Chip Seal — holds aggregate chippings firmly under traffic, rate 1.3–2.0 l/m² with embedded chips.

• 10/14 mm chippings: Binder 1.8 l/m², Chippings 9–11.5 l/m²
• 6/10 mm chippings: Binder 1.5 l/m², Chippings 6–8.5 l/m²
• 2/6 mm chippings: Binder 1.3 l/m², Chippings 4–5.5 l/m²

Rates assume 70% nominal binder content and crushed rock chippings. Actual rates determined during design and agreed with customer.

Polymer modification provides four key advantages for chip seal emulsions: reduced thermal susceptibility (binder doesn’t bleed in summer or become brittle in winter), improved aggregate retention after curing and opening to traffic, better flexibility and thermal crack resistance, and a higher softening point in the residue binder. HINCOL recommends Polymer Modified Bitumen Emulsions for all chip seal applications where AADT exceeds 2000.

The most commonly used aggregate sizes with RS2 are 2/6 mm, 6/10 mm, 10/14 mm, and 14/20 mm. The size chosen depends on traffic volume, type of chip seal design, and existing road surface condition. All aggregates must comply with IS gradation standards with oversize and undersize fractions excluded. Flakiness Index must be within specified limits (max 20 for 14/20 and 10/14, max 25 for 6/10).

• During rain or when rain is forecast within a few hours
• When ambient temperature is below 10°C
• On wet or damp road surfaces
• On structurally failed pavements — Chip Seal has no structural strengthening ability

The defect liability for Chip Seal does not cover damages due to base failure, mechanical/chemical/physical damage post-handover, or unforeseen natural calamities.

No. Chip Seal (Surface Dressing) in itself has no structural strengthening ability. It is a surface treatment that improves skid resistance, waterproofs the pavement, and prolongs service life by protecting the underlying structure. For roads requiring structural strengthening, Chip Seal is used as an integral element alongside other techniques — WMM, Emulsion Treated Bases, and bituminous mixes.

HINCOL’s field quality management for Chip Seal includes: Sieve Analysis on aggregate (1 per day per job site), Moisture Content of aggregate (1 per day if raining), Bitumen Content of emulsion (1 per batch), Softening Point of Residue (1 per batch), Rate of Application (1 per day per machine), Surface Irregularities assessment (every 100m per lane), and Joint assessment (every 100m per lane).

HINCOL evaluates aggregate sources across 7 quality attributes: Geology (rock origin), Shape (cubical, non-flaky — Flakiness Index limits), Texture (rough surface for binder adhesion), Cleanliness (dust-free), Abrasion Resistance (Los Angeles value), Reactivity (compatibility with cationic emulsion), and Soundness (resistance to weathering). Aggregate supply, gradation adjustments, and QA are managed by HINCOL.

Yes. HINCOL Chip Seal Emulsion RS2 is manufactured in strict compliance with IS 8887:2018 under ISO 9001:2015 certified quality management processes. All batches undergo testing in HINCOL’s NABL-accredited laboratories for bitumen content, viscosity, particle charge, storage stability, and residue properties before dispatch.