NABL Accredited · Advance NDT Service
Cut and Pull-Out
(CAPO) Test
In-situ measurement of concrete compressive strength through bond strength testing of embedded steel — delivering accurate, non-destructive results directly on-site without removing core samples.
ASTM C 900
Standard
±2%
Accuracy
24hr
Report TAT
NABL
Accredited
NABL Accredited Lab · ISO/IEC 17025:2017
Digital Reports via Autovity QLMS
Pan-India · 7 Lab Locations
Est. 2009 · 20,000+ Projects
Overview
What is the Cut and Pull-Out (CAPO) Test?
The Cut and Pull-Out (CAPO) Test is an advanced in-situ non-destructive testing method used to determine the compressive strength of existing concrete structures without the need for drilling or coring. A small disc is inserted into a shallow groove cut into the concrete surface, and a hydraulic jack applies a pullout force.
This method provides highly reliable compressive strength data directly from the structure being tested, making it ideal for quality assurance, structural assessment, and determining concrete maturity. Global Lab conducts CAPO tests as per IS 516, ASTM C 900, and other applicable standards using NABL-calibrated equipment.
Non-Destructive
Minimal surface preparation. Structure integrity is preserved throughout testing.
Fast Turnaround
On-site results within hours. Digital reports dispatched within 24 hours.
NABL Certified
All test reports carry NABL accreditation seal valid for legal and contractual use.
Pan-India Coverage
Site engineers deployed across 7 lab locations and all major project sites.
Digital Reporting
Access reports anytime via Autovity QLMS client dashboard — zero paperwork.
High Accuracy
Results correlated to cube compressive strength with ±2% precision range.
Test Procedure
How the CAPO Test is Conducted
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1Surface PreparationA shallow groove (approx. 25mm deep) is cut into the concrete surface using a diamond-tipped cutting tool. The surface is cleaned of dust and debris.
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2Insert Disc PlacementA specially designed steel insert disc is placed into the groove. A thin rod connects the disc to the pullout apparatus above the surface.
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3Hydraulic Pullout Force ApplicationA hydraulic jack applies a steady, controlled pullout force to the insert disc via the reaction ring resting on the concrete surface.
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4Failure Load RecordingThe maximum force at which the concrete cone is extracted is recorded. A digital load indicator provides real-time readings with data logging.
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5Strength Calculation & ReportingThe pullout force is correlated to cube compressive strength using established calibration curves. NABL-accredited reports are issued via Autovity QLMS.
Standards & Specifications
Applicable Test Standards
| Standard | Title | Scope | Type |
|---|---|---|---|
| IS 516 | Methods of Tests for Strength of Concrete | Compressive, Flexural, Tensile Strength | Indian Standard |
| ASTM C 900 | Standard Test Method for Pullout Strength of Hardened Concrete | In-situ Pullout Strength | ASTM |
| BS 1881 | Testing Concrete — Recommendations for Surface Hardness Testing | Surface Strength Assessment | British Standard |
| EN 12504-3 | Testing Concrete in Structures — Determination of Pull-out Force | Structural Concrete Testing | European Standard |
Applications
Where is the CAPO Test Used?
Assessment of existing RCC buildings and structures
Quality control during construction — slab, column, beam
Bridge, tunnel, and infrastructure health monitoring
Pre-stressing works — verifying concrete maturity
Dispute resolution and forensic structural investigation
Nuclear plants, metro projects, high-rise construction
Why Choose Global Lab
Our Advantages
NABL Accredited ReportsLegally valid certificates accepted by all government bodies, contractors and consultants.
Experienced Site EngineersDedicated field team with 15+ years of NDT experience across 20,000+ projects.
Autovity Digital PlatformReal-time report access, sample tracking, and TAT monitoring 24/7 from any device.
Calibrated EquipmentAll instruments NABL-calibrated with valid certificates ensuring measurement accuracy.
Pan-India Presence7 lab locations — Mumbai, Navi Mumbai, Kolkata, Guwahati, Bhubaneswar, Surat, Ahmedabad.
Competitive PricingTransparent pricing with no hidden charges. Volume discounts for large project contracts.