Its the end of the road for waste plastic. Using waste plastics to - - PowerPoint PPT Presentation

It’s the end of the road for waste plastic.

Using waste plastics to help improve our road networks in South Africa.

How were the products developed?

On the journey to create the new products, MacRebur firstly had to understand the polymers which make up the plastics in the waste stream. The following criteria was used to select the polymers used to make the products:

• The polymers have to come from a waste stream that would have otherwise gone to

landfill or been incinerated

• The polymers have to be able to melt into hot mix asphalt
• The polymers have to be able to form part of the binder
• The polymers have to be safe to use
• MacRebur were then able to experiment with the performance of each polymer

when mixed into both asphalt and bitumen. This information allowed the creation of what are now called the “MR products”.

Gareth Nel – gareth@macreburSA.co.za

Our Products - MR6, , MR8 & MR10

• The ‘MR’ products are engineered from 100% waste plastic pellets

used as an additive to replace or extend bitumen in any asphalt mix and are added in during the mixing process.

Gareth Nel – gareth@macreburSA.co.za

Products

All MR products are a blend of carefully selected polymers and are specifically designed to:

• Be used as binder extenders to reduce the volume of bitumen required in an asphalt mix
• Reduce waste plastics going to landfill or incineration
• Reduce green-house gas emissions

In addition to environmental benefits, each MR product is created to perform with specific tasks in mind.

• MR6 was designed to reduce rutting and the associated failures of asphalt – some of which is

caused by softening of bitumen in warm climates, trafficking of heavy loads or insufficient binder stiffness.

• MR8 was designed as a binder extender. It does not influence the characteristics of the asphalt as

much as Mr 6 or MR 10, but allows clients to maximise the reduction of fossil fuels, use waste plastics and reduce green house gas emissions, all while remaining cost neutral to the client.

• MR10 was designed to reduce cracking failures of asphalt – some of which are caused by low

temperatures or brittle binders. Gareth Nel – gareth@macreburSA.co.za

MR6

MR6 was the first product designed to be mixed into asphalt. It reduces the risk of asphalt deformation by rutting or shoving. The recommended dosage is 6% - 8% binder replacement. MR6 benefits

• Increased stiffness
• Increased resistance to deformation
• Improves moisture resistance
• Raises softening point
• Improved fuel resistant properties
• Reduces CO2e
• Reduces fossil fuel requirements
• Reduces waste plastics going to landfill or incineration

Gareth Nel – gareth@macreburSA.co.za

MR6 – Where it has been used

Above- Commercial Vehicle Car Park Right-Australia Right Top- A6, Carlisle Far Right Airport Runway

MR8

MR8 introduces a simple polymer into the mix, designed to deliver cost savings by replacing up to 10% of the bitumen. It does have increased performance results but not as great as MR6 or MR10

MR8 benefits

• Maintains stiffness
• Maintains resistance to deformation
• Maintains resistance to crack propagation
• Reduces CO2e
• Reduces fossil fuel requirements
• Reduces waste plastics going to landfill or incineration

Gareth Nel – gareth@macreburSA.co.za

MR8 – Where it has been used

Above- A689 Durham Right Top-Tesco Car Park Dumfries Right Bottom-Turkey Far Right-Bahrain

MR10

MR10 was designed to be mixed into asphalt to reduce the risk of cracking. It has been used on high stress pavements, roundabouts, road junctions, and trunk roads in all types of climates across the world. The recommended dosage is 4% -8% binder replacement MR10 benefits

• Increases stiffness
• Reduces risk of cracking at low temperatures
• Improved fatigue resistance
• Improved cohesion
• Increased resistance to hardening
• Increased resistance to deformation
• Reduces CO2e
• Reduces fossil fuel requirements
• Reduces waste plastics going to landfill or incineration

Gareth Nel – gareth@macreburSA.co.za

MR10 – Where it has been used

Above- A709 Dumfries Right-Brisbane, Australia Right Top-Bahrain Right Bottom-Green Dragon Lane

Application into the mix

• Products can be stored outside in the original packaging, however it is recommended

that it is stored away from any source of ignition of temperatures above 60°C.

• MR products are specifically designed for the use in hot-mix asphalts. The low melt point

and easy flow characteristics allow for easy mixing within an asphalt mix, in which the products form a homogeneous binder. Correctly mixed products give outstanding long term wearing protection and have excellent plucking and fretting (loss of material from the road surface) resistance.

• MR products are supplied in 3 Kg low melt bags designed to be manually fed into an

asphalt plant. They can also be supplied in 500 kg bulk bags designed to be automatically fed into an asphalt plant through the existing asphalt hopper system

• Products are designed to be used in either continuous drum or batch asphalt mixing
• plants. If you are using a drum mixing asphalt plant then you add the product into the

plant at the same time as the bitumen and aggregates are added. If you are using a continual mixing asphalt plant then the pellets get added to aggregate straight after they have been heated, they cannot go before the aggregate is heated as they will burn.

Gareth Nel – gareth@macreburSA.co.za

Application into the mix cont.. ..

• Due to the easy flow nature of MR products, asphalt plants do not need to alter their

existing infrastructure.

• MR products can be used by replacing between 5% and 10% by weight of bitumen within

any standard asphalt mix. However, we recommend for best structural results that 6% (3 Kg) by weight of bitumen is replaced.

• MR products can be used in the production of asphalt in any weather conditions,

however the finished asphalt must still be laid in accordance with local regulations and standards.

• Asphalt made using MR products do not compromise nor restrict laying capabilities.

Gareth Nel – gareth@macreburSA.co.za

CO CO2e

MR products can be used in any type of Hot Mixed Asphalt being manufactured. 90% of the asphalt market uses standard bitumen in their asphalt and 10% uses polymer modified bitumen. MR8 is best suited to be used as a replacement for standard bitumen and MR6 & MR10 are designed to be used as an alternative to polymer modified bitumen. The below table demonstrates the potential CO2e savings of using MR products across the world. For this example a conservative 6% MR products replacing bitumen has been used, however MR8 could be used to replace up to 10% standard bitumen.

PRODUCT CO2e saving per product Potential UK market by product

Tonnes

Potential UK CO2e saving per annum

Tonnes

Potential European market by product

Tonnes

Potential European CO2e saving per annum

Tonnes

Potential North America market by product

Tonnes

Potential North America CO2e saving per annum

Tonnes

Potential Worldwide market by product

Tonnes

Potential Worldwide CO2e saving per annum

Tonnes

MR6

• 3.06

3,000

• 9,180

65,250

• 199,665

82,500

• 252,450

240,000

• 734,400

MR8

• 1.22

54,000

• 65,880

1,174,000

• 1,432,280

1,485,000

• 1,811,700

4,320,000

• 5,270,400

MR10

• 2.8

3,000

• 8,400

65,250

• 182,700

82,500

• 231,000

240,000

• 672,000

South Africa – 5 Million tons of Asphalt manufactured annually equates to – 20,865 tons CO2e saving Gareth Nel – gareth@macreburSA.co.za

Global Presence

Internationally to date, MacRebur have already completed laid roads in the following countries: United Kingdom, Bahrain, Australia, Turkey, New Zealand, Canada, USA, Russia and Saudi Arabia. Due to large media coverage recently, the product is now being sampled in many more countries with the potential for them to all come on board before the end of 2019. The idea is to set up a manufacturing plant here in South Africa, that can produce enough product to export into Sub-Sahara Africa. This will highlight South Africa’s commitment to saving the environment while continuing to show itself as a leader in new innovative products and keeping its status as the ‘gate way into Africa’. Gareth Nel – gareth@macreburSA.co.za

Benefits of f our products

• Made with 100% recycled materials
• Uses unwanted plastics destined for landfill
• Reduction in landfill Tax costs
• Reduction in fossil fuel usage
• Reduction in carbon footprint
• Helps foster a circular economy
• Can be used in the production of hot mix asphalts
• Increases lifespan of roads
• Reduces maintenance costs
• Cheaper alternative to polymer modified bitumen
• No additional infrastructure costs for asphalt plants
• Job Creation in the unskilled sector

Gareth Nel – gareth@macreburSA.co.za

Contact Details

Gareth Nel +27 (0) 60 550 3789 gareth@macreburSA.co.za www.macrebur.com