Page 65 - 2018 DIGITAL BROCHURE

Setting times Storage How to specify
SHOTCRETE 437F is designed to SHOTCRETE 437F is packaged SHOTCRETE 437F shall be mixed
commence setting at 2.5 minutes in a 25kg polythene inner bag with and applied to prepared surfaces
and finish setting at 4 minutes a re-sealable tie within a stitch all strictly in accordance with the
at 20°c. In Winter SHOTCRETE sealed woven polypropylene outer manufacturer’s instructions.
437F can be used down to 0°c. bag, which should be stored in
The set will be slower but can be dry conditions and will last for Precautions
accelerated with warm water. In at least twelve months. We strongly recommend the
very hot temperature the set will be use of GLOVES, GOGGLES and
faster and can be slowed by using Yield MASK. Please see MSDS sheet
cold water. Generally 1 x 25kg bag of for full details.
SHOTCRETE 437F mixed with
Cleaning a water/cement ratio of 38% will
SHOTCRETE 437F should produce approximately 10 litres
be removed from tools and of finish mortar.
equipment with water immediately
after use.

Setting time & strength gain

Start Set 2.5 Min at 20°c
End Set 4 Min at 20°c

Flexible Compressive
Strength (Mpa) Strength (Mpa)

15 mins 1.7 6
1 Hour 2.2 9
3 Hours 2.5 12
24 Hours 3 20
7 Days 4.8 26
28 Days 7 45
Strength continues to develop thereafter.