|
|
 |
|
Anti Stripping Agent
 Products Anti Stripping Agent
|
| If you are looking for premium quality Anti Stripping Agent, then you will surely feel the difference with us. We present a qualitative range of Liquid Anti-stripping Agent that is manufactured implementing latest production techniques. Used as an adhesion promoter, Bitumen Antistripping Agent helps in reducing the damage made to Bituminous Pavements with moisture and rain. The Anti Stripping Agent offered by us is tested by IIP-Dehradun, SIIR-Delhi, UPPWDRI-Lucknow and CRRI-New Delhi producing excellent results. In addition to this, we provide availability of Liquid Anti-stripping Agent in varying quantities suiting to the preferences of customers. Anti Stripping Agent can be obtained at cost-effective prices of the industry.
DERBO-101 Liquid
DERBO-101-SA Paste
DERBO-101-OA Liquid
DERBO-401 Liquid
In 180 Kg MS Drums / 90 Kg Plastic Carboys.
Available Ex.
Muzaffarnagar , Uttar Pradesh, India Plant.
|
The Premature failure of Bituminous Pavements due to action of water is the most common problem and single biggest factor causing early pavement distress. The most important reason contributing to this condition is improper adhesion between bitumen and commonly used aggregates, salt contamination of water/soil and water drainage problems. Majority of aggregate show high stripping value (as high as 70%) and most of them fail miserably in bitumen adhesion properties. These conditions prevail across continents, thus all around the world, anti-stripping agents are recommended and used to extend pavement life.
There are very few types of aggregate which can resist the action of water, because the water can enter the pavement structure in a number of ways:
- Wet bitumen-aggregate interface on aggregate not dried properly.
- Rain water seepage through shoulders, cracks or pores, ground / sub-surface water exhibiting a hydrostatic action (moving inside bituminous layer).
- Capillary water sucked and expelled out from the top or subgrade .
- Water vapors formed in the subgrade due to hot weather.
The factors contributing to moisture damage of these pavements includes:
Siliceous type and dusty aggregates.
Presence of clay on aggregate surface.
Bitumen with higher acidity profile.
Mix designs with less binder and open grading of aggregates.
Material with higher voids due to improper compaction.
Inadequate drainage.
Presence of water vapors between layers.
Advantage of DERBO
Around the world, Antistripping agents are used to enhance the performance and durability of Bituminous pavements. Since stripping is a widespread problem in India also, The Ministry of Shipping Road Transport & Highways have specified the maximum stripping value of 5% for a number of Bituminous constructions.
In addition to minimizing water damage to Bituminous Pavements, DERBO range provide following benefits:
Provide saving by optimizing the Bitumen requirement in the mix.
Help utilize locally available aggregates to save in transportation.
Provide early coating of chips due to surface active action.
Reduce requirement of fines in the mix.
Help in easy compaction of the mix ensuring better surface texture.
Improve Retained Marshall Stability for high rainfall area.
Help the construction of roads during damp climate.
Save road from freeze-thaw in snow-bound areas.
Save upto 50% in maintenance cost.
Help in stable road maintenance even using wet aggregates.
Cost effective.
Applications
- Hot-Mix Surfacing : Hot Mix surfacing is the most efficient and preferred road construction technology. This however requires stringent control of performance features like stripping which most of the times shortens the pavement features and life. This problem can be minimized by using small doses of DERBO that also results in Bitumen saving and good saving in maintenance.
- Surface Dressing (Chip-Sealing) : Surface dressing (chip sealing) involves spreading uncoated chippings over a sprayed layer of Bitumen followed by rolling. The applied Bitumen layer cools rapidly leading to wetting problems which become worse by wet and dusty aggregates. In this case an active adhesion is required and typically 0.5-1.0 % DERBO is added to the bitumen. Alternatively the chippings can be pre-coated with a mix of diluted binder and DERBO or a diluted water solution of DERBO can be sprayed on chippings before spreading. Field studies have demonstrated that the use of Anti-stripping Agents in surface dressing provides resistance to early rain.
- Maintenance : When repair works like pot-hole filling, crack sealing, rutting etc are carried out in rainy season or where possibility of moisture damage is high, a little addition of Anti-stripping Agent ensure stable repairs.
- Hot Recycling : When a pavement is subjected to hot-recycling, if partly coated surfaces are observed in the reclaimed mix, to provide easy wetting, better water resistance and better compaction, Anti-stripping Agent should be used.
- Emulsions : Cationic bitumen emulsions provide good adhesion in road applications but sometimes an additional water resistance is required. Anti-stripping Agent can be added to the binder before emulsification. Anionic emulsions generally provide poor adhesion to siliceous (acidic) aggregates. Adhesion of anionic emulsions can also be improved by adding Anti-stripping Agent to the binder before emulsification, or to the finished emulsion.
- Precoated Chippings : When chippings are lightly coated with bitumen, kerosene or diesel to ensure adhesion in surface dressing or when rolled into hot rolled bituminous surfaces to improve skid resistance, Anti-stripping Agent can be added to the coating material to ensure good adhesion.
- Prime Coats : Where cutbacks are used for priming and dust control during construction, since road base retains moisture and remains cold, Anti-stripping Agent should be added to the prime coat to ensure active adhesion and protection from moisture.
Around the world, Antistripping agents are used to enhance the performance and durability of Bituminous pavements. Since stripping is a widespread problem in India also, The Ministry of Shipping Road Transport & Highways have specified the maximum stripping value of 5% for a number of Bituminous constructions.
The optimum doses of commercial grades are
| Grade | For Hot-Mix (%w/w of Bitumen) | For Repairs (%w/w od Bitumen) | | DERBO-101Liquid | 0.3% to 1.0% | 0.6% to 1.0% | | DERBO-101-SA Paste | 0.3% to 0.7% | 0.4% to 0.8% | | DERBO-101-OA Liquid | 0.2% to 07% | 0.3% to 1.0% | | DERBO-401Liquid | 0.1% to 0.4% | 0.2% to 0.5% |
|
| | |
|
|
PRODUCTS
