MICROSURFACING

Microsurfacing is a cost-effective surface treatment for preservation and extension of life of roads. With ample technical knowledge, Markolines has ventured into Microsurfacing to execute turn-key jobs and ensure smooth journeys across India. It is an eco-friendly surface treatment used to restore and preserve the surface characteristics of the road. It is a mix of polymer modified asphalt emulsion, graded aggregate, cement, water and additives. When applied in a semi-liquid condition with specialised paving equipment, it changes chemically and sets quickly. As a result, it gives a uniform coat of cold mix dense material that allows lesser downtime, resuming traffic within two hours of laying. It is called Green Technology for infrastructure projects. By using glass fibers in Microsurfacing, we have introduced the next generation known as Microsurfacing with Suspended Fiber Technology (MS - SFT) for the first time in India.

Moreover, as a step ahead Markolines has set up an exclusive Technology Centre to offer latest techniques in Microsurfacing. The Technology Centre supports the field staff for the precise technical needs of a project considering the vital aspects like condition of road, resources available & environment and delivers solutions tailor-made for it – making us the #1 in Microsurfacing in India.

Our expertise in Microsurfacing: Services managed under Preventive Maintenance:

• Own fleet of Microsurfacing Pavers
• Adherence to World-class Standards of Quality
• Captive Technology Centre for QA/QC
• Tie-up with international organisations such as Bergkamp Inc. USA, Ingevity and Owens Corning for technical back-up

Services managed under Preventive Maintenance:

• Microsurfacing
• Crack Sealing
• Slurry Sealing
• Fog Sealing
• Pothole Filling
• Patch Repairing
• Rut Filling

Downloads

• Introduction to Microsurfacing Download
• MORTH Approval for Microsurfacing Download
• IRC Code for Microsurfacing Download
• MORTH specification for Microsurfacing Download

COLD-IN-PLACE RECYCLING

CIPR involves removing and reusing the existing asphalt surface. It involves grinding off the top layer (up to 200mm) of the existing asphalt surface and mixing the crushed asphalt with foamed bitumen and placing it back down with a recycler and allied machinery. Our team of experts can undertake this complex and specialized activity.

As described in the ARRA (Asphalt Recycling and reclaiming Association) Basic Asphalt Recycling Manual, CIR “consists of recycling asphalt pavement without the application of heat during the recycling process to produce a rehabilitated pavement.

The cold-in-place process is typically performed using a “train” of equipment, which includes a water tanker, bitumen tanker, recycler, graders and rollers. We own the complete set of machinery used in the Cold-in-Place Recycling (CIPR) process.

CIPR can correct deep asphalt defects such as rutting, fatigue (alligator) cracking, and utility cuts that cannot be addressed by a surface treatment or an overlay, and allows minor corrections to the profile of a road surface, reduces reflective cracking, and results in a minor inconvenience to traffic.

Advantages of Cold-In-Place Recycling:

• CIPR overlay lasts 10-15 years as compared to 5-8 years of traditional overlay (Subject to traffic and overloading)
• Shorter construction period, due to high production capacity of recycling machines
• Cost effective due to reuse as well as on site execution.
• Conserves raw materials and natural Resources.
• Conserves energy
• Reduces greenhouse gas emissions
• Work is performed with minimal traffic disruption

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FULL DEPTH RECLAMATION (FDR)

Full depth reclamation is a process in which all of the asphalt pavement section and a predetermined amount of underlying materials are treated with recycling agents to produce a stabilized base course. Asphalt emulsions and/or chemical agents like fly ash or Portland cement are added as recycling agents.

The main steps include pulverization, introduction of additive, shaping of the mixed material, compaction, and application of wearing or surface course. This method of recycling is normally performed to a depth of 100 to 300 mm (4 to 12 in)

Full depth reclamation has been recommended for pavements with deep rutting, load-associated cracks, non-load associated thermal cracks, reflection cracks, and pavements with maintenance patches such as spray, skin, pothole, and deep hot mix. It is particularly recommended for pavements having a base or subgrade problem.

The major advantages and benefits of full depth reclamation are as follows:

• The structure of the pavement can be improved significantly without changing the geometry of the pavement and shoulder reconstruction.
• It can restore old pavement to the desired profile, eliminate existing wheel ruts, restore crown and slope, and eliminate potholes, irregularities, and rough areas. Pavement widening operations can also be accommodated in the process. A uniform pavement structure is obtained by this process.
• It can eliminate alligator, transverse, longitudinal, and reflection cracking. Ride quality can be improved.
• Frost susceptibility may be improved.
• The production cost is low, and only a thin overlay or chip seal surfacing is required on most projects.
• Engineering costs are low
• Materials and energy are conserved, and air quality problems resulting from dust, fumes, and smoke are eliminated. The process is environmentally desirable, since disposal problem is avoided.

SOIL STABILIZATION

Soil Stabilization converts ground of insufficient bearing capacity into soil that is highly suitable for construction of roads, airports, ports, and factories. This improves the bearing capacity, Volume stability and the Resistance to water of the existing ground, which later forms the backbone of the new base strengthening the road pavements.

Lime Treatment reduces the soil moisture content (drying). It reduces the plasticity of soil by aiding the compaction (modification) and Increasing early strength (Modification). It also increases the long-term strength of soil by reducing its swell potential (Stabilization).

The permeability of cement-stabilized material is greatly reduced. The result is a moisture-resistant material that is highly durable and resistant to leaching over the long term. Cement-soil Stabilization is another technique, where Portland cement can be used to stabilize and strengthen certain type of soils.

Advantages of Soil Stabilization:

• Higher resistance (R) values
• Reduction in plasticity
• Lower permeability
• Reduction of pavement thickness
• Elimination of excavation, exporting unsuitable material and importing new materials aids compaction