Block Joining Mortar Testing

Block Joining Mortar Testing
(Thin Bed Mortar — BS EN 998-2)

Complete mechanical and physical testing of block joining mortars for AAC, hollow concrete and masonry blocks — verifying compressive strength, adhesion, open time, water retention and consistency per BS EN 998-2.

Overview

What is the Block Joining Mortar Testing?

Block Joining Mortar is a factory-made cementitious mortar designed for jointing masonry units — AAC blocks, hollow concrete blocks, fly ash bricks and clay bricks. Unlike site-mixed mortar, factory-made block joining mortars have controlled water retention, consistency and adhesion properties for consistent joint quality.

At Global Lab, block joining mortar testing is conducted as per BS EN 998-2 covering compressive strength (M2.5–M20 class designation), flexural strength, adhesion bond strength, open time, water retention and fresh mortar consistency — providing complete product characterisation for manufacturer certification and construction quality control.

BS EN 998-2 Classification

M class designation (M2.5 to M20) from measured compressive strength.

Compressive Strength

7 and 28-day mortar cube strength for M class determination.

Adhesion Bond Strength

Tensile bond to AAC, concrete and clay brick substrates tested.

Water Retention

Water retention >75% ensures adequate hydration in thin bed joints.

NABL Certified Reports

All results on NABL-accredited letterhead per BS EN 998-2.

Open Time Verification

Pot life and open time tested for site workability compliance.

Test in Action

Block Joining Mortar Testing — Site Images

Block Joining Mortar Flow Table Consistency Test

Mortar Prism Casting for Strength Test

28-Day Compressive Strength and M Class Assigned

Test Procedure

How the Block Joining Mortar Testing is Conducted

1

Sample Preparation

Mortar mixed at specified w/c ratio. Fresh mortar consistency (flow table) measured.
2

Fresh Mortar Tests

Consistency, bulk density, air content, water retention and setting time tested.
3

Strength Specimen Casting

40×40×160mm prisms cast per BS EN 1015-11. Cured at 20°C/65% RH.
4

Strength Testing

Flexural and compressive strength at 7 and 28 days per BS EN 1015-11.
5

Bond & M Class Report

Adhesion bond strength tested. M class assigned from compressive strength. NABL report within 28 days.

Standards & Specifications

Applicable Test Standards

Standard	Title	Scope	Type
BS EN 998-2	Specification for Mortar for Masonry — Masonry Mortar	Block Mortar	British Standard
BS EN 1015-11	Methods of Test for Mortar — Determination of Flexural and Compressive Strength	Mortar Strength	British Standard
IS 2250	Code of Practice for Preparation and Use of Masonry Mortars	Masonry Mortar	Indian Standard
BS EN 1015-12	Methods of Test for Mortar — Determination of Adhesive Strength	Bond Strength	British Standard

Applications

Where is the CAPO Test Used?

AAC block joining mortar product certification for manufacturers

Hollow concrete block mortar quality control on large building projects

Ready-to-use block mortar product approval and CE marking

Site-made vs factory-made mortar comparative quality testing

Thin bed mortar for AAC block precision coursing verification

Structural masonry mortar for load-bearing wall acceptance testing

Why Choose Global Lab

Our Advantages

NABL Accredited ReportsLegally valid BS EN 998-2 M class certificates for all project requirements.

AAC Block ExpertiseExperienced in thin bed mortar testing for AAC and precision block systems.

Complete Mortar TestingCompressive strength + bond + water retention + open time in one report.

Pan-India CoverageTesting at all 7 NABL-accredited lab locations.

28-Day ReportComplete BS EN 998-2 test suite within 28 days.

Product Development SupportTest data guides formulation optimisation for mortar manufacturers.

Block Joining Mortar Testing(Thin Bed Mortar — BS EN 998-2)