Elastoplastic Concrete - Plastic Reinforcement Fibre Fiber Fibres

HOME > TEST REPORTS > FLEXURAL ENERGY ABSORPTION

FLEXURAL ENERGY ABSORPTION

Flexural Toughness Equal to Steel

download .pdf

INTRODUCTION

This is a summarised report based upon extracts from research testing conducted by Dr. Stefan Bernard at the University of Western Sydney and at the M5 Motorway Tunnel Project in Sydney AUSTRALIA.

The three specimens in this report were selected to provide comparative data on alternative materials for the reinforcement of shotcrete linings used in underground support:

No.	Specimen	Description
1	Barchip MHT 48mm Synthetic fibre	Dosage rate of 10 kg /m3
2	Steel Fibre – High Performance Hooked end	Dosage rate 40 kg /m3
3	Steel Mesh (Type F41)	4 mm wire at 100 mm centres

EXPERIMENTAL
PROGRAM

Round Determinate Panels of nominal 800mm diameter and 75mm depth were prepared for each of the three reinforcing materials to simulate sections of a shotcrete lining. All specimens were cured under standard laboratory conditions for 28 days prior to testing.
Results are expressed as load vs displacement graphs where the area under the curve can be calculated to provide a total energy absorption (Joules) for a 40 mm central displacement of the specimen.

RESULTS

CONCLUSION

Barchip fibre reinforced shotcrete is capable of sustaining superior energy absorption values when compared to steel fibre or steel mesh reinforced shotcrete and is undoubtedly the most suitable reinforcement selection where high ground deformations are expected.

References: 1. UWS Engineering Report CE9 • 2. UWS Engineering Report CE15 • 3. TSE Report on Age

This information has been provided as a guide to performance only, for specific and supervised conditions. The user is advised to undertake their own evaluation and use the services of professionals to determine product suitability for any particular project or application prior to commercial use.

Did you know...?

Barchip fibre reinforced shotcrete can absorb up to 20 times more energy from rock displacement than unreinforced shotcrete.

Streaming Videos

Watch Video

Batch plant integrated automatic dosing system

Watch Video

Barchip being sprayed at 7kg/m3 (12lbs/yd3)

Dosing Barchip

Simple to batch

Barchip is safer & lighter to handle than steel fibre.

Safety

Reduce back injury

Did you know one 5kg bag of Barchip gives equivalent energy absorption performance to 25kg of steel fibre.

Barchip is supplied in 5kg (11 lb.) plastic or paper bags