Mazier Soil Sampler: Superior Undisturbed Core Sampling For Soft Soils & Geotechnical Investigations

Mazier Soil Sampler: Superior Undisturbed Core Sampling for Soft Soils & Geotechnical Investigations

The Mazier Soil Sampler (often called the Mazier Core Barrel) is the industry-leading solution for obtaining high-recovery, undisturbed core samples in very soft, unstable, or unconsolidated formations. Engineered specifically for challenging materials like sands, silts, marls, clays, mudstones, and soft shales, this triple-tube core barrel system guarantees sample integrity critical for accurate geotechnical laboratory testing and geological analysis.

Key Features & Technology:

1. Triple-Tube Design: Unique triple-wall construction protects the sample during drilling and extraction, minimizing disturbance and maximizing recovery rates (often achieving 100% in target formations).

2. Spring-Loaded Inner Tube with "Pull-Ahead": The patented automatic mechanism features a spring inner tube assembly. In soft soils, the inner tube (core case) projects up to 50mm ahead of the bit, acting as a cutting shoe. This shields the core from drilling fluid erosion. In harder layers, the tube retracts automatically.

3. Integrated PVC Coreliner: A smooth PVC liner sits inside the inner tube, ensuring easy, uncontaminated sample removal and safe transport to the lab. This liner compatibility is ideal for triaxial testing and other sensitive geotechnical analyses.

4. "Basket" Core Catcher: Effectively prevents soft, granular materials from falling out during barrel retrieval.

5. Versatile Cutting Shoes: Available in various lengths to optimize performance across different soft-to-medium formations.

6. Compatible Core Bits: Designed to work seamlessly with Tungsten Carbide (TC) core bits, a cost-effective choice for unconsolidated overburden and soft rock.

Unmatched Advantages:

• Exceptional Sample Quality: Delivers truly undisturbed samples essential for reliable soil mechanics testing (e.g., triaxial, permeability).

• Maximum Core Recovery: Proven near-perfect recovery rates even in notoriously difficult, cohesionless soils like loose sands and silts.

• Reduced Sample Disturbance: The pull-ahead cutting shoe and coreliner drastically minimize mechanical and fluid-induced disturbance.

• Laboratory Ready: The obtained core diameter (e.g., 74mm for 101mm hole) is optimally sized for standard geotechnical lab equipment.

• Operational Flexibility: Works effectively within a wide range of soft ground conditions common in geotech site investigations, environmental drilling, and mineral exploration overburden.

• Proven Global Standard: Widely trusted and utilized across Europe, Australasia, and globally for demanding soft ground coring.

Mazier Core Barrel Specifications:

(The 101mm size is the most common, offering an ideal balance between hole size and sample volume for lab testing.)

Key Components:

1. Outer Tube

2. Inner Tube (Spring-Loaded)

3. Head Assembly

4. Cutting Shoe (Projecting)

5. PVC Sediment Tube (Core Liner)

6. "Basket" Core Catcher

7. Stabilizers

8. Compatible Core Bit (e.g., Tungsten Carbide for soft formations)

FAQ:

• Q: What formations is the Mazier Sampler best for?

  • A: It excels in very soft to medium soils: Sands, Silts, Clays, Marl, Mudstone, soft Shale, Gypsum, and unconsolidated overburden.

• Q: Why is sample recovery so high with the Mazier?

  • A: The projecting cutting shoe protects the core from drilling fluids, the triple tube design minimizes vibration/disturbance, and the basket catcher retains loose material.

• Q: What is the core diameter for lab testing?

  • A: Core diameters range from 62mm (86 hole) to 113mm (146 hole). The popular 101mm hole size yields a 74mm core, perfectly sized for standard triaxial cells.

• Q: Can it drill hard rock?

  • A: Primarily for soft formations. For harder rock, it's designed to be used in conjunction with dedicated hard rock core barrels (like T2 or T6 series) once softer overburden is penetrated.

• Q: What type of core bit is used?

  • A: Tungsten Carbide (TC) core bits are the standard, cost-effective choice for the soft, abrasive formations the Mazier targets. Diamond bits are not typically needed.

Optimize your soft ground sampling results. The Mazier Soil Sampler sets the benchmark for obtaining high-quality, undisturbed cores essential for accurate geotechnical design and analysis. Request a quote or contact our technical team today to specify the ideal Mazier size for your next project.