NABL Accredited · Dimensional Calibration
Sand Pouring Cylinder Calibration
(IS 9640 — Field Density Apparatus)
NABL-accredited calibration of sand pouring cylinders per IS 9640 — verifying calibration tray volume, cone sand mass and sand bulk density for IS 2720 Part 28 field dry density testing.
IS 9640
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 Sand Pouring Cylinder Calibration?
The Sand Pouring Cylinder is used for the sand replacement method of in-situ dry density testing per IS 2720 Part 28. Accurate results depend on: calibration tray volume (V_tray), cone sand retention mass (M_cone), and sand bulk density (ρ_sand). Regular calibration certifies all three parameters.
At Global Lab, sand pouring cylinder calibration per IS 9640 verifies: tray volume by water-filling gravimetric method, cone sand mass (3 repeat determinations), valve operation and shutter mechanism, and calibration sand bulk density — issuing a calibration datasheet with certified V_tray, M_cone and ρ_sand 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
Sand Pouring Cylinder Calibration — Site Images
Calibration Tray Volume by Water-Filling Gravimetric Method
Cone Sand Mass from 3 Repeat Determinations
IS 9640 Certificate — V_tray, M_cone and ρ_sand Certified
Test Procedure
How the Sand Pouring Cylinder 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 9640 | Specification for Sand Replacement Method Apparatus | Sand Cylinder | Indian Standard |
| IS 2720 Part 28 | Methods of Test for Soils — Dry Density by Sand Replacement | Field Density | Indian Standard |
| IS 1202 | Determination of Bulk Density of Granular Material | Bulk Density | Indian Standard |
| NABL-141 | NABL Policy on Metrological Traceability | Traceability | NABL |
Applications
Where is the Sand Pouring Cylinder Calibration Used?
Annual sand pouring cylinder calibration for NABL geotechnical lab
Highway subgrade field density QC calibration
IS 2720 Part 28 apparatus calibration for compaction acceptance
Airport runway subgrade field density calibration
New cylinder set acceptance before first field use
Field density apparatus calibration audit
Why Choose Global Lab
Our Advantages
NABL Accredited CertificatesIS 9640 certificates with V_tray, M_cone and ρ_sand certified.
Three-Parameter CertificationAll three parameters in one certificate.
Prevents Nominal Volume ErrorEliminates error of using manufacturer's nominal tray volume.
Fast 1-Day CertificateCertificate within 1 working day.
Pan-India CoverageDimensional calibration at all 7 locations.
Geotechnical PackageSand pouring cylinder + CBR + Proctor together.