NABL Accredited · Dimensional Calibration
Flakiness Gauge Calibration
(IS 2386 Part 1 — Aggregate Shape Testing)
NABL-accredited calibration of flakiness gauges per IS 2386 Part 1 — verifying slot widths for each aggregate size fraction for accurate flakiness index testing.
IS 2386 Pt.1
Standard
±0.1mm
Accuracy
1 Day
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 Flakiness Gauge Calibration?
The Flakiness Gauge has elongated slots corresponding to each aggregate size fraction per IS 2386 Part 1 Table 1. An out-of-dimension slot incorrectly classifies particles as flaky, producing erroneous FI results critical for MORTH road aggregate compliance.
At Global Lab, flakiness gauge calibration verifies each slot width using calibrated slip gauges and Vernier calipers — comparing against IS 2386 Part 1 Table 1. Slot width, length and surface condition reported per fraction on the NABL certificate.
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 and calibration results are backed by traceable measurements and standardized procedures.
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 in Action
Flakiness Gauge Calibration — Site Images
Flakiness Gauge Slot Width Measured with Slip Gauge Reference
Each IS 2386 Fraction Slot Individually Verified
NABL Certificate — All Slot Widths vs IS 2386 Table 1
Test Procedure
How the Flakiness Gauge Calibration is Conducted
-
1
Surface Preparation
A 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. -
2
Insert Disc Placement
A specially designed steel insert disc is placed into the groove. A thin rod connects the disc to the pullout apparatus above the surface. -
3
Hydraulic Pullout Force Application
A hydraulic jack applies a steady, controlled pullout force to the insert disc via the reaction ring resting on the concrete surface. -
4
Failure Load Recording
The maximum force at which the concrete cone is extracted is recorded. A digital load indicator provides real-time readings with data logging. -
5
Strength Calculation & Reporting
The 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 2386 Part 1 | Methods of Test for Aggregates — Particle Size and Shape | Flakiness Test | Indian Standard |
| IS 2984 | Gauge Blocks (Slip Gauges) | Reference Standard | Indian Standard |
| IS 3651 | Vernier Calipers | Reference Instrument | Indian Standard |
| NABL-141 | NABL Policy on Metrological Traceability | Traceability | NABL |
Applications
Where is the Flakiness Gauge Calibration Used?
Annual flakiness gauge calibration for NABL aggregate lab
NHAI and MORTH road aggregate FI testing calibration
Quarry QA/QC flakiness gauge calibration
Pre-NABL assessment for aggregate lab scope
FI results dispute investigation
Elongation + Flakiness combined package
Why Choose Global Lab
Our Advantages
NABL Accredited CertificatesIS 2386 Part 1 flakiness gauge certificates for NABL assessment.
Every Slot IndividuallyAll fractions measured — worn specific slots identified.
Combined with ElongationFlakiness + Elongation in one visit.
Fast 1-Day CertificateCertificate within 1 working day.
Pan-India CoverageDimensional calibration at all 7 locations.
Aggregate Lab PackageFlakiness + Elongation + Sieve + Vernier together.