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RESIN

RESIN. RESIN CARTRIDGE. RESIN COMPARTMENT ( 90% BY VOLUME ). UNSATURATED POLYESTER RESIN Polyester Backbone Promoters Inhibitors COURSE FILLER FINE FILLER. CATALYST COMPARTMENT ( 10% BY VOLUME ). BENZOYL PEROXIDE CARRIER Thickened Water Oil

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RESIN

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  1. RESIN

  2. RESINCARTRIDGE

  3. RESIN COMPARTMENT( 90% BY VOLUME ) • UNSATURATED POLYESTER RESIN Polyester Backbone Promoters Inhibitors • COURSE FILLER • FINE FILLER

  4. CATALYST COMPARTMENT ( 10% BY VOLUME ) • BENZOYL PEROXIDE • CARRIER Thickened Water Oil • FILLER

  5. RESIN MIXING TIME 30-35 Revolutions Mix Both Components

  6. RESIN SYSTEMS TYPE OF RESIN MIX TIME or SPIN TIME HOLD TIME WHAT IS GEL TIME ? WHAT IS CURE TIME ?

  7. WHAT GEL TIME ? • GEL TIME IS THE TIME IT TAKES RESIN TO REACH A PASTE, OR SEMISOLID STATE. • ( THIS USUALLY TAKES APPROXIMATELY 5 - 30 SECONDS ) • GEL TIME = SPIN TIME + HOLD TIME

  8. WHAT CURE TIME ? • CURE TIME IS THE TIME IT TAKES RESIN TO REACH ABOUT 90 - 95 % OF ITS FINAL STRENGTH ( THIS USUALLY TAKES APPROXIMATELY 10 MINUTES )

  9. GEL TIME • AS A • FUNCTION • OF • TEMPERATURE

  10. TYPICAL SYSTEMS • 1” (#5 REBAR) • 5/8” DIA REBAR 0.9” DIA CARTRIDGE • 1” DIA BORE 3/16” ANNULUS…… • 1” (#6 REBAR) • 3/4” DIA REBAR 0.9” DIA CARTRIDGE • 1” DIA BORE 1/8” ANNULUS……… • 1- 3/8” (#7 REBAR) • 7/8” DIA REBAR 1-1/4” DIA CARTRIDGE • 1-3/8” DIA BORE 1/4” ANNULUS………

  11. WHAT IS ANCHORAGE ? ANCHORAGE MEANS HOW WELL A BOLT IS ANCHORED IN THE ROOF. WE WANT THE ANCHORAGE ZONE OF THE BOLT TO BE GREATER THAN THE ULTIMATE STRENGTH OF THE BOLT. ( DURING A PULL TEST, WE WANT TO BREAK THE BOLT INSTEAD OF PULLING IT OUT OF THE MINE ROOF )

  12. RESIN ANCHORAGE RELATED TO COMPRESSIVE STRENGTH OF ROCK

  13. WHAT IS RESIN SHOW ?( ON FULLY GROUTED RESIN BOLTS) • RESIN SHOW IS WHEN A SMALL AMOUNT OF EXCESS RESIN APPEARS BETWEEN THE BOLT HEAD AND PLATE. • RESIN SHOW IS CAUSED, BECAUSE THERE IS APPROXIMATELY 6% MORE RESIN BY VOLUME THAN THE VOLUME OF THE ANNULUS AROUND THE BOLT. • A LACK OF RESIN SHOW CAN MEAN A BAD INSTALLATION

  14. COMMON MISTAKES WHEN INSTALLING RESIN BOLTS • DRILL HOLE TOO DEEP • DRILL HOLE TOO LARGE IN DIA. • SPINNING BOLT TOO LONG. • RESPINNING BOLT AFTER HOLD TIME. • BOLT SPACING NOT ACCORDING TO ROOF CONTROL PLAN. • OVER TORQUING BOLT DURING INSTALLATION.

  15. STORAGE OF RESIN • KEEP IN A COOL, DRY PLACE. • AVOID DOUBLE STACKING. • AFFECTED BY HIGH STORAGE TEMPERATURE. • UNAFFECTED BY FREEZING.

  16. SHELF LIFE • QC PRODUCTS 6 MONTHS • ALL OTHERS 1 YEAR • SHELF LIFE CAN BE EXTENDED UP TO TWO MONTHS, BUT ONLY BY THE RESIN MANUFACTOR AFTER TESTS HAVE BEEN PREFORMED.

  17. SHELF LIFE

  18. THE END

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