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Backfill Grout Injection Materials

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Backfill Grout Injection Materials

Materials Used

MaterialItem NamePackingSpecific GravityIntended Use
Hardening MaterialTAC-mentTanker3.15
  • Used for curing mortar.
  • It greatly affects long-term strength.
Additional Material TAC-α
TAC-βⅡ		 Tanker 2.6
  • Used to suppress mortar bleeding.
  • Material quality stabilization, greatly affecting pressurized deliverability.
Foaming Agent TAC-2 19kg/can 1.0
  • Used for adding a prescribed amount of air in the mortar.
  • Impact on filling and strength.
Stabilizing Agent TAC-Re 20kg/can 1.27
  • Used for lengthening the onsite useable time of the mortar.
  • Significantly improves the pumpability of the mortar.
Plasticity Modifier TAC-3G Tanker 1.37
  • Used for plasticizing the mortar to prevent dilution by groundwater.
  • Significantly effects rapidity of mortar hardening.
MaterialItem NamePackingSpecific GravityIntended Use
Gelling Agent TAC-GEL 25kg/bag 1.00
  • Used to reduce the consolidation time of the two-part backfilling grout material.
  • Greatly affects suppression of water dilution by groundwater.
Standard formulation examples.
Region 1㎡ Compound Uniaxial Compressive Strength
（N/mm2）
Liquid A Liquid B
Hardening Material Aux Material Foaming Agent Stabilising Agent Water Air Volume Plasticizing Agent
TAC-ment TAC-α TAC-2 TAC-Re Fresh Water TAC-3G After 1 hour
Kansai / Chugoku / Shikoku region
(Okayama produced TAC-α)		 ① 230kg 30kg 0.5kg 2.3kg 720L 143L 50L 0.03
② 250kg 30kg 0.5kg 2.5kg 710L 142L 55L 0.05
③ 270kg 30kg 0.5kg 2.7kg 699L 141L 60L 0.10
Eastern Japan
（Yamagata produced TAC-α）		 ① 230kg 20kg 0.5kg 2.3kg 724L 143L 50L 0.03
② 250kg 20kg 0.5kg 2.5kg 714L 142L 55L 0.05
③ 270kg 20kg 0.5kg 2.7kg 703L 141L 60L 0.10
Tokai / Hokuriku
（Gifu produced TAC-α）		 ① 230kg 20kg 0.5kg 2.3kg 724L 143L 50L 0.03
② 250kg 20kg 0.5kg 2.5kg 713L 142L 55L 0.05
③ 270kg 20kg 0.5kg 2.7kg 703L 141L 60L 0.10
Kyushu
（Kyushu produced TAC-α）		 ① 230kg 33kg 0.5kg 2.3kg 719L 143L 50L 0.03
② 250kg 33kg 0.5kg 2.5kg 708L 142L 55L 0.05
③ 270kg 33kg 0.5kg 2.7kg 698L 141L 60L 0.10
Early Stage Backfill Grout Strength Graph.
  • ① Liquid A Flow value: 300-500mm
  • ② Gel time on mixing A and B liquids: within 15 seconds
  • ③ Consider formulation based on the site conditions and constructions parameters and prior experience of these conditions and our products.

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