brandon keep giving good vibrations - brandon tool hire

Brandon keep giving GOOD VIBRATIONSThe application of vibration by mechanical means is a

long recognised method of improving the structural

integrity of mass poured concrete.

Wacker IRFUN’S effec-tiveness it is worthconsidering the following rule ofthumb which says the effectivecompaction area of conventionalflexible shaft type pokers in concrete is:10 times the diameter of the heade.g. a 57mm poker will have acompaction area of 570mm.

However The Wacker IRFUN shaftless motor in the head poker with a57mm head produces a compactionarea of up to 850mm, due to the highcentrifugal forces and maintainedoptimum frequency.In addition the Wacker IRFUN has noflexible shaft to get damaged andcarries a major health and safetybenefit in the exceptionally lowhand arm vibration readings, aslow as 2.5m/second squared,allowing usage of up to 10 hours,according to the HSE recommen-dations.

These benefits have been enjoyed

The simplest known methods ofapplying vibration go right back toRoman times when moulds containingrudimentary concrete were tappedwith sticks to remove pockets of air.

Moving on a century or two wearrive at the post war era when theuse of powered concrete pokersbecome more commonplace with theincreased demand for high qualityconcrete, especially where traditionalbuilding methods were being replacedby the development of high riseconstruction.

Here the choice lay mainly withpetrol and diesel driven power unitscoupled to flexible shafts or with airpowered models driven bycompressors.

Further developments took placeduring the sixties and seventies withthe introduction of electricallypowered pokers giving much greaterflexibility. In recent years, further developmentshave taken place with Brandon ToolHire not only supplying acomplete range of VibratingPokers powered byelectric and petrolmotors drivingflexible shafts, butnow leading the way with thesensational Wacker IRFUN range of“shaft less- motor in the head”electric poker.It has long been regarded that the

optimum frequency (number ofvibrations achieved when the poker isinserted into the concrete) is

■ Vibration gives greater density.

■ Compressive strength is increased by the removal of entrapped air.

■ It improves bonding with reinforcing steel and atconstruction joints.

■ Ensures greater durability and a smoother finish.

■ Reduces incidence of honey-combing and surface air voids

WackerIRFUN Poker

Why Vibrate?

COMPACTION AREAS

VIBRATING POKERS

TECH SPEC

Ideal for form work and interior work.

Diagram of comparable compaction areasbetween Wacker IRFUN high frequency,motor in the head and standard Pokers

IRFUN 57■ Vibrator head diameter 57mm■ Vibrator head length 400mm■ Vibrator head weight 5.8kg■ Total operating weight 19.8kg■ Effective compaction up to 85 cm■ Vibrations approx 12000pm■ Mains rating 1.3kVA

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a aaaaaaaaaaa a aa aaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a aaaaaaaaaaaa a a aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa a aEffective area ofcompacting forIRFUN 57 =85cm

Effective area ofcompacting for

standard Poker =57cm

12,000vibrations per minute.The high performance achieved

by the Wacker IRFUN pokers is due tothat frequency being maintained notonly in air but also when inserted intothe concrete.

This integrity of performance andsubsequent increase in centrifugalforce creates a much higher qualityconcrete.

In direct contrast, the conven-tional flexible shaft poker loses up to40% of its frequency and subsequentperformance when inserted intoconcrete.

As a further measure of the

over the last year by many companiesincluding one of Brandon’s majorcustomers; Carillion, the main contractorat the Devonport Dockyard in Plymouth.They have used the Wacker IRFUN pokersextensively throughout this project withBrandon Tool Hire supplying through it’son site store.

The Brandon Tool Hire network nowfeatures a concrete specialist in every oneof its ten areas who can supply on siteadvice, training and demonstrations ofthe benefits of the entire range ofconcreting products.

Simply call 08705143391 andask for your local Brandon

concrete specialist!

BRANDON TOOL HIRE