Roads and Infrastructure March 2022

Page 40

A Chipsealer fitted onto a four-axles truck. The machine can be designed according to the truck chassis type.

SECMAIR’S CHIPSEALER

MOVING FORWARD

SECMAIR’S CHIPSEALERS HAVE BEEN USED FOR 40 YEARS IN FRANCE. THEY ARE NOW BEING USED IN MANY MORE COUNTRIES FOR ALL TYPES OF SPRAYED SEAL APPLICATIONS. ROADS & INFRASTRUCTURE LOOKS AT THEIR EVOLUTION AND CURRENT APPLICATIONS. The Chipsealer can handle multiple sprayed seal repairs on the go.

W

hen the first Secmair Chipsealer – also called Secmair synchronous sprayer-spreader – was invented in early 1980s, it had been designed specifically to carry out sprayedseal patch repairs. Since then, its use and technical capabilities have evolved, making it suitable for different types of sprayed-seal applications. Sprayed-seal treatment is one of the most popular road maintenance techniques in the world. The traditional setup for sprayed-seal applications consists of the binder sprayer on one side, and a chipspreader on the other side. While this setup is still used to apply sprayed seals, having multiple equipment and operators involved (even for small to medium jobs), and the time lap between the movement of the sprayer and the chipspreader, can pose constraints to the application process. ONE MACHINE, ONE OPERATOR For small to medium sprayed-seal treatments, the Chipsealer is an alternative to consider. It offers the option to apply a high-performing sprayed seal with only one machine and one operator.

40

ROADS MARCH 2022

By simultaneously spraying the asphalt and spreading the chips while the binder is still hot, the Chipsealer guarantees perfect bonding between the two materials. Applications rates for both materials are computer controlled to ensure a high level of accuracy. As the machine is forward operated, no truck drives on the freshly applied surface. The spray bar is equipped with an independent left/right hydraulic height adjustment, making it easy to precisely control the spray pattern. This also means if there’s a side shift, such as while turning, the binder still gets perfectly covered by the chips. The spray bar has a working width of up to 4.4 metres, offering coverage for an entire lane section in a single pass. Last but not least, having a single machine on site with a compact overhang means it’s easier for operators to access narrow jobsites. THE PATCHING PROCESS Consistent with what it has been originally designed for, the Chipsealer can handle multiple sprayed seal repairs on the go. Thanks to Secmair’s long proven New Pilot


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Articles inside

Women In Industry Awards Finalists Announced

3min
page 61

A summary of the major contracts awarded for infrastructure projects across the nation.

5min
pages 62-64

The Infrastructure Sustainability Council refl ects on the IS Rating system’s impact on promoting greater sustainability of infrastructure projects over the past decade.

4min
pages 59-60

Precast coating solutions from Dulux

5min
pages 56-58

Secmair’s Chipsealer moving forward

5min
pages 40-41

AfPA Member Profi le

3min
pages 54-55

AfPA’s take on diversity

3min
pages 52-53

A one-stop-shop for temporary fencing

6min
pages 48-49

Looking out for overhead damage

6min
pages 50-51

From strength to strength

5min
pages 37-39

Soil treatment: Leaving no trace behind

9min
pages 44-47

Excavating in tight spaces

4min
pages 34-36

Creating a place for women in construction

7min
pages 14-17

Cutting a fi ne line

5min
pages 31-33

News

9min
pages 6-11

People on the move

2min
pages 12-13

We ask the roads and infrastructure industry experts to share their views on barriers to more diversity.

7min
pages 23-25

Learning by doing

4min
pages 26-27

Laying the groundwork

7min
pages 28-30

Behind the construction of ‘Australia’s greenest freeway’

6min
pages 18-22
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