RESPONSIVE, RELIABLE AND COMMITED
We believe in lasting quality and a systematic approach to work. ECHO ASPHALTS provides a range of infrastructure services with aim of improving lives across New South Wales and more.
HOT BITUMEN SEALS
Generally the terms asphalt and bitumen are interchangeable when it comes to using them to describe a surface sealant; however, asphalt (or hot-mix as it is commonly referred to in this context) is made up of sand and stone aggregates, bound together by bitumen. The hot-mix is laid on a prepared base, which provides a stable foundation for the pavement. Once laid, the hot-mix provides a smooth, flexible and durable finish which is ideal for road surfaces, driveways, car parks and other areas which may encounter a high volume of traffic or drag caused by turning wheels.
An emulsion can be defined as a dispersion of small droplets of one liquid in another. Bitumen emulsions generally belong to the oil-in-water type of emulsions where bitumen is dispersed in water with the aid of a small quantity of the emulsifying agent. The agent stabilises the bitumen particles under normal conditions of storage. Bitumen emulsions derive their main use in road construction and maintenance because of their safety, ease in handling and excellent adhesion properties.
Dust Sealing has very good soil stabilisation properties on unimproved roads producing a hard and durable surface. It is also recommended for road edge sloping and gives good protection against soil and sand erosion in rural and desert areas.
Dust Seal is best applied when the surface of the soil is slightly damp. If binding soil is to be added, spreading should take place shortly afterwards. Under normal conditions, best results are obtained when the road surface is watered shortly before the spreading.
To create a primerseal, a primerbinder is sprayed onto a prepared but unprimed granular pavement surface. The primerbinder is then covered with a layer of size 7mm or 10mm aggregate, rolled and opened to controlled traffic. The primerbinder must be fluid enough to penetrate and adhere to the pavement surface as well as hold the aggregate. If not fluid enough, it can leave pinholes or “ball”; i.e. it may not form a continuous uniform and waterproof layer and/or may not bond to the underlying pavement surface.
2 IN 1 EMULSION SEALS
2 in 1 Bitumen Seals have numerous advantages in the following areas:
- Safety, all vehicles lay in a forward direction
- Grade and slope are no longer a problem.
- The steepest and tightest of jobsites are now as easy as straight run highway work
- Greater stone retention when using emulsions
- More penetration into the base by the bitumen
- NO damage to bitumen mat during the application of aggregate
- Vehicles can perform strip patching and remedial work in LIVE TRAFFIC
Hot Mix Asphalt
Asphalt pavement refers to any paved road surfaced with asphalt. Hot Mix Asphalt (HMA) is a combination of approximately 95% stone, sand, or gravel bound together by asphalt cement, a product of crude oil. Asphalt cement is heated aggregate, combined, and mixed with the aggregate at an HMA facility. The resulting Hot Mix Asphalt is loaded into trucks for transport to the paving site. The trucks dump the Hot Mix Asphalt into hoppers located at the front of paving machines. The asphalt is placed and then compacted using a heavy roller, which is driven over the asphalt. Traffic is generally permitted on the pavement as soon as the pavement has cooled.
The key to a quality spray seal surface lies in the accurate application and combination of a bitumen binder with aggregate to provide a durable, skid resistant surface. ECHO ASPHALTS uses the technology of precision calibrated bitumen sprayers to provide the correct binder levels for each individual surface requirement.
ROAD BASE SUPPLIES
Our road base can be manufactured to provide viable alternatives base materials which are commonly manufactured from basic raw materials dug up from quarries as well as a wide range of alternative solutions and materials specific to the project's needs.