Road Construction Industry
IS 712 certified Ca(OH)₂ meeting NHAI and IRC specifications — trusted by road contractors and PWD projects across Rajasthan, Gujarat, Maharashtra, and pan-India.
Hydrated lime (calcium hydroxide, Ca(OH)₂) is a critical material in road construction and soil stabilisation across India. The National Highways Authority of India (NHAI), state Public Works Departments (PWDs), and IRC specifications all recognise hydrated lime as the standard material for improving weak subgrade soils and building durable road bases.
When mixed into clay-rich subgrade soils, hydrated lime triggers two reactions: an immediate ion exchange that reduces plasticity and improves workability, followed by a long-term pozzolanic reaction that permanently strengthens the soil. The result is a stable, load-bearing subgrade that resists moisture damage and reduces pavement failures — extending road life significantly.
Hydrated lime is mixed into weak, clay-rich subgrade soils to improve their load-bearing capacity before laying the road base. Lime reacts with clay minerals (ion exchange + pozzolanic reaction) to permanently increase CBR (California Bearing Ratio) values, reduce plasticity index, and improve compaction characteristics. NHAI and IRC specifications require IS 712 certified hydrated lime for this application.
Lime-treated sub-base layers provide a stable platform for bituminous or concrete pavement layers. Lime stabilisation reduces moisture susceptibility, prevents frost heave, and improves the long-term structural performance of the road. Used extensively in NHAI four-laning and expressway projects.
Hydrated lime combined with fly ash (from thermal power plants) creates a highly effective stabilising mixture for weak soils. The lime activates the pozzolanic properties of fly ash, producing a cementitious material that significantly improves soil strength. This LFA stabilisation method is approved by IRC and widely used in road projects near thermal power stations.
For road embankments built on soft, expansive, or waterlogged soils, hydrated lime treatment of the fill material improves compaction, reduces settlement, and prevents embankment failure. Lime-treated embankments are more stable and require less maintenance over the road's service life.
In road rehabilitation projects, hydrated lime is used in cold in-place recycling (CIR) to stabilise the reclaimed asphalt pavement (RAP) material. Lime improves the binding properties of the recycled material, enabling cost-effective road rehabilitation without full reconstruction.
| Application | Recommended Grade |
|---|---|
| Subgrade soil stabilisation (NHAI/PWD) | Standard (70–75%) or Industrial (80–85%) |
| Sub-base stabilisation | Industrial (80–85%) |
| Lime-fly ash (LFA) stabilisation | Industrial (80–85%) |
| Embankment fill treatment | Standard (70–75%) |
| Cold in-place recycling (CIR) | Industrial (80–85%) |
Our hydrated lime meets IS 712 (BIS) specifications required by NHAI, IRC, and state PWD projects. Test certificates provided with every shipment for project documentation.
Fine particle size meeting IS 712 sieve requirements ensures uniform mixing with soil and complete pozzolanic reaction — critical for achieving specified CBR values.
Road projects require large, consistent quantities. We supply 15 MT to 500+ MT per month with reliable delivery schedules to match your project timeline.
From our plant in Pipar City, Jodhpur, we supply to road projects across Rajasthan, Gujarat, Maharashtra, Madhya Pradesh, Uttar Pradesh, Punjab, and beyond.
Direct manufacturer pricing — no middlemen. Volume discounts available for large project requirements. Transparent quotes with freight and delivery timeline.
Our team can advise on lime dosage rates, mixing procedures, and curing requirements for your specific soil type and project specification.
Share your project specification, monthly quantity, and delivery location. We respond within 2 hours with a detailed price quote.