NexPand Rock‑Breaking Chemical: Harlen Supplies’ Precision Fracturing Solution

Staff writer
Jul 18
2 min read

Updated: Sep 4

NexPand™ from Harlen Supplies is a cutting‑edge, non‑explosive rock-breaking expansive mortar engineered to deliver precise, vibration‑free rock and concrete fracturing where traditional blasting is impractical or prohibited. Available as a dry powder in 20 kg cartons (four 5 kg sachets), NexPand™ simply requires mixing with clean water to activate a controlled expansion reaction. Once poured into pre‑drilled holes, the mortar generates compressive stresses that exceed the tensile strength of the host material, resulting in clean, predictable split lines without fly‑rock, noise, toxic fumes or structural damage.

NexPand non‑explosive rock breaking mortar from — NexPand non‑explosive rock-breaking mortar —engineered for precise, vibration‑free fracturing. Safe, efficient, and cost‑effective rock splitting solution.

Key Technical Features

Temperature‑graded formulations: Three types tailored to ambient and substrate temperatures (Type 1: −5 °C to 10 °C; Type 2: 10 °C to 25 °C; Type 3: 25 °C to 40 °C) ensure consistent set‑times and peak expansive force.
Controlled expansion: Achieves up to 18,000 psi of pressure over 2–24 hours (depending on temperature), producing fractures without percussion or shockwaves.
Shelf‑life & storage: One‑year stability in standard warehouse conditions; no special permits or hazardous‑goods handling required.

Typical Applications

Quarrying & dimension stone cutting: Precise block separation where noise or vibration limits apply.
Civil infrastructure & utilities: Safe excavation for pipelines, trenches and foundation removal adjacent to sensitive structures.
Mining & tunnelling: Pre‑splitting in shafts or drives with minimal disturbance.
Demolition & refurbishment: Controlled removal of reinforced concrete beams, slabs and refractory linings.

Standard Operating Procedure

1. Measure and mark drilling locations at 250–300 mm spacing.

2. Drill holes to ≥ 90% of rock depth, clean thoroughly.

3. Mix one 20 kg carton with 6 L of water until homogenous.

4. Pour mixture to within 30 mm of hole collar; protect from rainfall.

5. Allow mortar to expand undisturbed; fractures appear within 24 hours

By integrating NexPand™ into your workflow, you unlock a paradigm of “zero‑harm” demolition—boosting productivity, reducing overheads and preserving structural integrity.