Product Spotlight We’ve had feedback that you would like to know more about our products...so this will be the first in a new series named 'Product Spotlight.' The first product we would like to tell you about is Enviro Bind a specially designed emulsion used in stabilisation of basecourse. About the product The emulsion is milled into the basecourse using conventional equipment. The small bitumen particles in emulsion disperse very easily and readily attack and bind up fine material in the basecourse. Why Enviro Bind? The industry has limited success with unbound materials and cement stabilisation with a number of rehabs lasting less than ten years. Lack of water proofing has been a common theme in unbound basecourse and there is significant evidence showing that cement bonds in cement stabilisation will break down over time leading to waterproofing issues. Emulsion stabilisation can be easily applied and offers superior water proofing to other technologies. This means lower failure rates and less maintenance. Benefits/customer feedback • Faster to construct (recent trial using Enviro base was constructed two days faster than cement which paid off the additional cost of the emulsion • Better finish - binds up fines and allows for stone mosaic surface - better adhesion of seal • Better water proofing - uses half as much bitumen compared to foam bitumen (1.5% vs 3%) and at 1.5% it provides better coating and water proofing than foam • No cement/dust on site • Can be used with conventional equipment • Some SH sites were left unsealed for two months without blowing out like other patching options (better productivity for sealing crews doing patching) #productspotlight #roadscience #basecourse #Downer
Agreed Mark- there seems to be a reluctance to bitumen stabilise in the NT. The solution always revolves around cement or lime.
Very useful thanks for the Tech Info
There is certainly enough evidence out there that BSMs (Bitumen Stabilised Materials) outperform cement modified materials. BSMs can be in the form of either Bitumen Emulsion or Foamed Bitumen. The guide to BSMs (TG2) treats these materials in a similar way. However, I truly hope that decision makers don’t believe that 1.5% residual bitumen will have the same performance as 3.0% residual bitumen. I’d like to see a independent peer reviewed paper (preferably a masters or PhD research) that takes a range of split sample aggregates (same PSD, affinity to bitumen, etc.) to validate statements like you have made in your marketing statement that half the bitumen will have better performance. Where is the ITS, UCS, RLT results for this statement? Where is the 10 year+ real pavement performance that backs up that statement? What do you do with the dirty water that is used to flush out the spray system? Looking forward to the learning experience once you have real evidence and data.
Kerry Reilly
2y
Thanks for sharing
Mike Manion
2y
Great initiative. It would be good to see some data on this so we can understand it’s suitability for use on highway pavements.
The quick setting time and tight knit surface renders the pavement suitable for traffic soon after stabilisation. Resistance to raveling also minimises loose chip, improving roaduser safety
A great option to maintain flexibility to stop cracking while waterproofing a good crushed rock base that performs well if kept dry which is what Envirobase does
Atabaki Holding
2yVery insightful and thrilling argumentation has been shared by one of the most pioneer mentors of BSM, Mr. Froebel. As a veteran in BSM applications , I am also excited to hear the reaction of Messrs. Road Science that will be very stimulating debate for the fans of BSM. Thank you!