Flow Table Calibration
(BS EN 12350-5 / IS 5512 — Cement Flow Table)

NABL-accredited calibration of flow tables per BS EN 12350-5 (fresh/self-compacting concrete) and IS 5512 (cement mortar/paste) verifies critical mechanical dimensions, mass tolerances, and drop heights to ensure precise workability and consistency measurements.

Overview

What is the Flow Table Calibration?

The Flow Table measures consistency of cement paste, mortar and fresh concrete by dropping through 12.5mm height for 15 drops. Drop height (12.5±0.2mm) is the critical calibration parameter — incorrect height changes energy input and directly affects measured flow diameter.

At Global Lab, flow table calibration per IS 5512 verifies: table diameter (300mm ±1mm), levelness (spirit level), drop height (12.5±0.2mm by calibrated depth gauge), cam mechanism operation and table surface flatness.

Reviewed by Mahemood Ahmad, Lab Manager — NABL Accredited Laboratory, Global Lab India

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

Flow Table Calibration — Site Images

Drop Height 12.5mm Measured with Calibrated Depth Gauge

Table Levelness Check with Spirit Level

IS 5512 Certificate — Flow Table Dimensional Compliance

Test Procedure

How the Flow Table 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
BS EN 12350-5	Testing Fresh Concrete — Flow Table Test	Flow Table	European Standard
IS 5512	Specification for Flow Table for Use in Tests of Hydraulic Cements and Pozzolanic Materials	Cement Flow Table	Indian Standard
IS 1199	Methods of Sampling and Analysis of Concrete	Reference	Indian Standard
NABL-141	NABL Policy on Metrological Traceability

Applications

Where is the Flow Table Calibration Used?

Annual flow table calibration for NABL cement laboratory

IS 4031 cement consistency flow table calibration

SCC slump flow test table calibration

Admixture dosage optimisation calibration

Pre-NABL assessment flow table calibration

Cement workability dispute investigation

Why Choose Global Lab

Our Advantages

NABL Accredited CertificatesIS 5512 certificates for NABL cement lab assessment.

Drop Height Critical12.5mm certified — most commonly wrong flow table parameter.

Levelness DocumentedTable levelness measured and documented.

Fast 1-Day CertificateCertificate within 1 working day.

Pan-India CoverageDimensional calibration at all 7 locations.

Cement Lab PackageFlow table + Vicat + Le-Chatelier + Gang in one visit.

Flow Table Calibration(BS EN 12350-5 / IS 5512 — Cement Flow Table)