Rock Coring & Core Sampling
Rock coring and core sampling is the process of drilling precise circular holes into hardened materials (such as natural rock, concrete, or reinforced concrete) to extract intact cylindrical samples (known as “slugs” or “cores”) for structural, geological, or exploratory analysis.
ONE WIN ENGINEERING LIMITED utilizes heavy-duty rotary machines equipped with diamond-tipped cylindrical bits to extract clean core samples from natural bedrock, foundations, walls, and subterranean structures. The extracted cores maintain structural integrity, making them ideal for laboratory compressive strength testing, geological stratification, and concrete quality verification.
Advantages of Our Rock Coring Services⭐
1. Intact Sample Extraction
Utilizes smooth diamond rotary action rather than impact force, ensuring the extracted core slug remains fully intact for accurate testing.
2. Zero Damage to Surrounding Structure
Low-vibration drilling prevents micro-fractures in surrounding rock mass or structural concrete, preserving foundation stability.
3. Versatile Material Adaptability
Capable of penetrating high-strength reinforced concrete, natural granite, hard rock, and complex mixed geological strata.
4. Flexible Angular Operation
Equipment can be rigidly mounted on horizontal ground, vertical walls, or inclined rock slopes for multi-angle core sampling。
Applications of Rock Coring & Core Sampling✅️
- Concrete Strength Testing by Core Drilling: Extracting cylindrical concrete samples from existing building walls, slabs, or columns for laboratory compressive strength testing.
- Geotechnical Exploration and Rock Stratum Analysis: Extracting core samples prior to foundation construction to assess underground rock hardness, weathering degree, and geological structure.
- Foundation and Pile Cap Quality Verification: Conducting quality spot checks on new foundations, bored piles, and pile caps.
- Structural Safety Assessment and Engineering Acceptance: Used for load-bearing capacity analysis and material testing prior to old building renovation or structural modification.
- Exploratory Drilling and Subsurface Condition Verification: Pre-investigating underground obstructions and rock layer depth for underground works such as trenchless pipe jacking and tunnel construction.
Rock Coring FAQs❓️
What are the specifications (size) of the samples (slugs/cores) extracted from core drilling?
We offer various drill bit diameters and depths according to client testing specifications, ensuring extracted core samples comply with engineering standards.
Does core sampling affect the original structural strength of the building?
No. Our diamond rotary drilling technology eliminates impact shock, preventing micro-fractures in adjacent concrete. The small hole can be grouted with high-strength non-shrink cement after sampling.
Can core drilling be carried out in confined spaces or indoors?
Yes. Our equipment is compact and versatile, capable of mounting and operating effectively in restricted spaces like basements, utility shafts, and indoor sites.