First Warm Mix Additive thatcombines immediate commercialsaving with superior coating,exceptional compaction and is 100% safe for environment.

LOWTHERM4GWarm Mix Additive

• Immediate Commercial Saving• Not Hazardous to Health• Reduces Carbon Footprint• Extremely Small Dose (0.2% - 0.4% of binder weight)• Superior Coating• Environmentally Friendly Organic Composition• Exceptional Compaction• Moisture Resistant• Reduce Mixing Temperatures by 50ºC• Extends Paving Season• Increases Haulage Distance by 200%• Prevents Stripping• Saves Energy by up to 55%• Improves Reinstatement Works’ Quality• Eliminate Asphalt Fumes by 94%• Allows up to 45% RAP• Reduces Hardening of Bitumen• Improves Pavement Rutting Resistance• Increases Plant Productivity• Allows Faster Opening of Site to Traffic• Reduce Stack Emissions• Long Shelf Life (24 Months)

There are several warm mix technologies available in the marketplace,but they all suffer from the same problem – cost. The producer of thewarm mix asphalt spends more money on additives than they save fromreduced energy costs during manufacture.

LOWTHERM 4G is the first additive on the market that enables you notonly to reduce your mixing temperatures by up to 50ªC with all of theconsequent environmental and working benefits, but also immediatelyand considerably lower the production cost. Independent estimatessuggest that a large producer of asphalt can save millions of pounds a year by using LOWTHERM 4G.

Our highly advanced, 4th Generation additive is also completely safe tohumans and the environment, which in todays health and safety focusedindustry, is a huge advantage over traditional chemical additives.

The future ofwarm mix asphalt

LOWTHERM4G

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LOWTHERM 4G is a high technology liquid additive, which works at the microscopic interfacebetween the bitumen and aggregate. It reduces the frictional forces at this interface, enablingthe reduction of mixing temperatures by up to 50C. Our extensive laboratory testing hasproven our product performance to be equal to or exceeding that of our major competitors.

15 %

0 %

5 %

10 %

Without AdditiveT=160°C

Without AdditiveT=120°C

0.5 % LOWTHRM 4GT=120°C

0.3 % LOWTHRM 4GT=120°C

10 Rotations 50 Rotations 100 Rotations

% Void - Gyratory Press

100 %

0 %

40 %

80 %

0 h 6 h 24 h

Rolling Bottle Test (EN 12697 - 11 part A)

20 %

60 %

Copertura Inerti

0 % LOWTHERM 4G 0,3 % LOWTHERM 4G

WMA (Warm Mix Asphalt) is typically produced at 30ªC lower than HMA. Using LOWTHERM 4G you canlower the temperature by up to 50ºC. This has a profound impact on the energy required to heat theaggregate in the mixing plant. Our experience has shown a reduction in energy costs of up to 50%*.This advantage, coupled with the low cost of LowTherm 4G compared to other leading brands, allowsthe asphalt producer to achieve a significant reduction of production costs. Independent estimatessuggest that a large producer of asphalt can save millions of pounds a year by using LOWTHERM 4G.

By using LOWTHERM 4G’s advanced adhesion properties, up to 45% RAP content to the mixes canbe incorporated, which offers a further commercial benefit to the producer.

Please contact us to arrange a meeting where we can calculate the savings available to you on aplant-by-plant basis.

LOWTHERM 4G was developed and tested in Italy. It has been trialled and used extensively inmany countries worldwide.

LOWTHERM 4G mixed at traditional HMA temperatures, gives you the ability to extend the rangeof the asphalt plants’ distribution radius by up to 200%, due to the advanced compactionproperties of asphalt mixed with LOWTHERM 4G.

LOWTHERM 4G features a proprietary adhesion agent, which aids the performance of the bitumen.This helps to prevent stripping and also stops residual water from lower heating temperatures andfoamed bitumen interfering with the coating process. In fact, our laboratory tests have shown thatwhere you use LowTherm 4G in conjunction with foamed bitumen, you get all of the benefits of reducedbitumen viscosity, improved coating performance and the ability to lower the mixing temperatureseven further than with foam technology alone. LOWTHERM 4G removes the moisture from theaggregate and creates a strong, water resistant chemical bond with the bitumen. This chemicalbond also helps to considerably improve pavement life.

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Commercial Benefits

*This can vary due to individual plant characteristics.

The use of LOWTHERM 4G in WMA significantly reduces the hardening of the bitumen during themixing process. This leads to longer pavement life and increased flexibility of the bitumen.

We have conducted a wheel tracking experiment in our laboratory on an InfraTest 20-4000 Hamburgwheel tracker in accordance with EN 12697/22 and we found that Stone Mastic Asphalt producedwith LOWTHERM 4G offered better resistance to rutting than the control sample.

Due to the way that LOWTHERM 4G helps to increase the compaction performance, it is possibleto lay a much thicker layer of asphalt whilst still achieving the correct compaction density. This savesconsiderable time on emergency repairs.

By mixing the asphalt at HMA temperatures and using LOWTHERM 4G, you can extend your haulagedistance by up to 200%, knowing that your client can achieve the desired performance on site.Furthermore, adding LOWTHERM 4G to your mix can eliminate clumping and hardening of the productin overnight storage silos, enabling you to better manage your workload the following day andincrease plant productivity.

Smaller reinstatement crews will see an immediate benefit of the asphalt made with LOWTHERM 4Gas it will enable them to use the asphalt for longer and achieve a much greater level of compactionusing their plate compacters. One of the major factors in reinstatement failure is the lack ofadequate compaction.

Asphalt mixed with LOWTHERM 4G starts out at a lower temperature, it cools quicker, meaningyou can open the site to traffic much sooner than with conventional HMA. This is especially criticalon major trunk roads with expensive lane rental costs.

LOWTHERM 4G improves the workability of the asphalt without modifying the physical propertiesof the binder; therefore, parameters such as viscosity, penetration and softening point, remainunchanged.

Production and Quality Benefits

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Lower mixing and paving temperatures minimise fume and odour emissions for the asphalt workeras well as create a cooler working environment.As a rule of thumb, reducing the temperature of the asphalt by 12ºC equates to a fume reduction of 50%.

As you can see from the table above, there is a significant improvement with regards to fumeexposure for the asphalt worker when using LOWTHERM 4G.Our highly advanced chemical formula is vegetable based and is classed as non hazardous forhuman health.

By mixing your asphalt at up to 50ºC lower than HMA, stack emissions are dramatically reduced.This is especially important for urban plants that operate in areas of high population density.Using LOWTHERM 4G can help reduce the following:

СО2 – Carbon dioxide reduction up to 50%CO – Carbon monoxide reduction up to 30%SO2 – Sulpur Dioxide reduction up to 35%VOC – Volatile Organic Compounds reduction up to 50%NOx – Nitrous Oxide reduction up to 70%Particulate release reduction up to 55%

Using LOWTHERM 4G will give you the opportunity to significantly reduce the carbon footprint of theproduced asphalt. LOWTHERM 4G gives the applicant a distinct advantage when applying for tenders- the carbon footprint is being given increasing importance. Furthermore, LOWTHERM 4G is notclassified as hazardous to the environment and is nearly entirely biodegradable.

Environmental Benefits

Health & Safety

LOWTHERM 4G represents a breakthrough in WMA. Independent testing hasshown that it is the first product on the market that combines all of the benefitsof traditional WMA products with a commercial saving for the producer.

Please contact us for more information or to arrange an appointmentwhere we can discuss your requirements in more detail.

Temperature Reduction 12ºC 24ºC 36ºC 48ºC

Fume Reduction 50% 75% 87.5% 93.75%

+44 7577 078159markhewstone@sima-asphalt.comwww.sima-asphalt.com