NABL Accredited · Dimensional Calibration
Proctor Mould Calibration
(IS 10074 — Standard & Modified Proctor Mould)
NABL-accredited calibration of Proctor compaction moulds (1000ml standard, 2250ml large) per IS 10074 — verifying internal diameter, height and certified volume for IS 2720 Parts 7 and 8.
IS 10074
Standard
±0.5mm
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 Proctor Mould Calibration?
The Proctor Mould (1000ml standard) volume is used directly in dry density = mass / volume. An incorrect volume causes systematic MDD and OMC errors. IS 10074 specifies mould dimensions and tolerances.
At Global Lab, Proctor mould calibration per IS 10074: internal diameter at 3 heights × 3 directions = 9 readings, internal height, certified volume V = π/4 × D² × H. Certified volume replaces nominal 1000ml in all density calculations.
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
Proctor Mould Calibration — Site Images
Proctor Mould 9-Point Internal Diameter Measurement
Certified Internal Volume — Replaces Nominal 1000ml
IS 10074 Calibration Certificate with Certified Volume
Test Procedure
How the Proctor Mould 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 10074 | Specification for Proctor Apparatus | Proctor Mould | Indian Standard |
| IS 2720 Part 7 | Methods of Test for Soils — Light Compaction | Standard Proctor | Indian Standard |
| IS 2720 Part 8 | Methods of Test for Soils — Heavy Compaction | Modified Proctor | Indian Standard |
| NABL-141 | NABL Policy on Metrological Traceability | Traceability | NABL |
Applications
Where is the Proctor Mould Calibration Used?
Annual Proctor mould calibration for NABL geotechnical lab
Highway embankment compaction QC laboratory
Airport subgrade modified Proctor mould for AAI
CBR programme Proctor mould at OMC
Research compaction study mould calibration
Proctor mould audit when OMC/MDD results disputed
Why Choose Global Lab
Our Advantages
NABL Accredited CertificatesIS 10074 certificates with certified volume.
Volume CriticalEliminates the most common systematic compaction error.
Proctor + CBR TogetherStandard + large mould in one visit.
Fast 1-Day CertificateCertificate within 1 working day.
Pan-India CoverageDimensional calibration at all 7 locations.
Geotechnical Lab PackageProctor + CBR mould + direct shear together.