Knowledge
Technical knowledge on non-explosive demolition
Fundamentals, method comparisons and application examples from more than 50 years of experience with expansive mortar – written for planners, contractors and users.
Overview
Topics in detail
Expansive mortar – also known as non-explosive cracking agent, splitting mortar or non-explosive cracking agent – separates rock and concrete by pressure alone. The following pages explain how it works, compare it with conventional demolition methods and show the typical applications including drill patterns and field experience.
Expansive mortar
How it works, how it developed, drill patterns and the limits of non-explosive splitting – explained concisely.
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Alternative demolition methods
Hammer, wire saw, splitting cylinder, conventional blasting or expansive mortar: when each method pays off.
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Rock excavation
Building pits, road construction, tunnel re-profiling – breaking rock without vibration and without a blasting permit.
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Splitting boulders
From field stones to 50-tonne blocks: drill, fill, wait – without flying debris and without vibration.
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Concrete demolition
Separating foundations, plinths and mass concrete in a controlled way indoors and in populated surroundings.
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Reaction time
First cracks after 8–16 hours are only the beginning: pressure continues to rise for several days and peaks after about one week.
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Drill pattern
10 × Ø rule, conservative 6–8 × Ø starting value, half spacing at a free edge and sufficiently deep boreholes: the fundamentals of a good drill pattern.
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Business location Liechtenstein
Highly industrialised, politically and financially stable, globally connected: the location behind BETONAMIT® and ROCKSPLIT®.
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Mechanical application
Mix and pump BETONAMIT by machine: tonnes instead of kilograms – process, MAI mixing pump, water setting of 1.0–1.2 litres per 5 kg and safety.
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