Grout Bags for Underpinning

Grout bags used for underpinning operations are manufactured from a specially woven fabric which enables them to withhold relatively high pressures when inflated with grout. A simple yet practical device used when conventional shutters are impossible to fit the grout bag can be adopted to provide a quick and easy solution.

Download technical data information sheet from download page.

Once pressurised the contact surfaces form a perfect bearing area regardless of shape. They are normally used for a multitude of applications, such as; underpinning foundations, dry-packing alternative, support beam preloading device, temporary or permanent packs (chocks) for supports.
 

We offer an extensive standard range available off the shelve listed below:
 
Alternatively, we can manufacture special sizes to suit your particular application or project. However, please remember that specials made to order can take time, sometimes up to eight weeks depending on the quantity required. Our standard lightweight hand operated grout pumps and electric paddle mixers are also available for hire or sale at competitive rates.

We strongly recommend that customers use our non-shrink 'Hydra-Grout' which has very high flow properties making it easy and efficient to pump when using our light weight hand operated grout pumps. The material has been specially formulated for use with our products, it obtains high strengths quickly, (20 N/mm2  within 24 hours and  55 N/mm2  within 7 days) while also maintaining a reasonable working period during installation (45 minutes),  for further advice or assistance please contact us.

RECTANGULAR TYPE

MODEL CODE LIFTING CAPACITY
(tonnes)
CURED CAPACITY
(tonnes)
BAG DEPTH
(mm)
BAG LENGTH
(mm)
MAXIMUM HEIGHT
(mm)
MAXIMUM
PRESSURE

BAG VOLUME
 
FILLED WEIGHT
GB-101 0.7 30 150 250 50 4 bar 2.2 lts 4 kgs
GB-102 1.1 40 200 300 50 4 bar 3.5 lts 7 kgs
GB-103 1.6 50 250 350 75 4 bar 7.5 lts 14 kgs
GB-104 2.2 75 300 400 75 4 bar 10.5 lts 19 kgs
GB-105 2.7 100 350 450 100 4 bar 18.4 lts 34 kgs
GB-106 3.6 125 400 500 100 4 bar 23.4 lts 43 kgs
GB-107 4.5 150 450 550 125 4 bar 36.2 lts 66 kgs
GB-108 5.4 200 500 600 125 4 bar 43.9 lts 80 kgs
GB-109 6.5 250 550 650 150 4 bar 62.8 lts 114 kgs
GB-110 7.2 300 600 700 150 4 bar 73.7 lts 134 kg

BEAM TYPE

MODEL CODE LIFTING CAPACITY
(tonnes)
CURED CAPACITY
(tonnes)
BAG DEPTH
(mm)
BAG LENGTH
(mm)
MAXIMUM HEIGHT
(mm)
MAXIMUM
PRESSURE
BAG VOLUME FILLED WEIGHT
GB-201 0.8 25 100 500 50 4 bar 2.5 7 kgs
GB-202 1.7 50 100 1000 50 4 bar 5.0 12 kgs
GB-203 2.6 75 100 1500 50 4 bar 7.5 16 kgs
GB-204 3.5 100 100 2000 50 4 bar 10.0 21 kgs
GB-205 4.4 125 100 2500 50 4 bar 12.5 25 kgs
GB-206 7.8 160 150 3000 75 4 bar 33.8 64 kgs
GB-207 9.2 250 150 3500 75 4 bar 39.4 75kgs
GB-208 10.5 300 150 4000 75 4 bar 45.0 86 kgs
GB-209 11.2 350 150 4500 75 4 bar 50.6 95 kgs
GB-210 13.1 400 150 5000 75 4 bar 56.6 106 kgs
GB-211 19.3 500 200 5500 100 4 bar 110.2 204 kgs
GB-212 21.1 600 200 6000 100 4 bar 120.1 223 kgs
GB-213 22.7 700 200 6500 100 4 bar 130.2 241 kgs
GB-214 25.0 800 200 7000 100 4 bar 140.1 259 kgs
GB-215 26.7 900 200 7500 100 4 bar 150.3 277 kgs
       
              Hydra-Grout Quality per 25 kgs Bag = 20 Litres

 
               
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