INTRODUCTION

Controlab has its origins as a civil engineering firm that operated in East London in the mid 1960’s. This included a testing laboratory and it was decided, for various reasons, that this element should be discarded and set up as an entity operating independently. Thus, the seeds were sewn for what was to eventually become (in April 1990) Controlab and the name has not been changed since.

Controlab’s Head Office in the Quigney (East London) with the main laboratory situated at 10 St Paul’s Road, North End (East London) and has branch laboratories in Port Elizabeth (Labco), Mthatha, Kokstad and Cape Town (Geoscience Laboratories (Pty) Ltd).

Controlab is a SANAS accredited specialist testing company, catering for the civil, geotechnical and structural engineering fraternity.  It offers a full range of testing services of soils, aggregates, bitumen, asphalt, concrete and geotechnical investigations for, amongst others, new roads, borrowpits, road rehabilitation, gravel roads, township developments, buildings and structures.  We also have had field laboratories on various projects nationally.

 SERVICES

Controlab is a specialist testing company, catering for the civil, geotechnical and structural engineering fraternity.  It offers a full range of testing services of soils, aggregates, bitumen, asphalt, concrete and geotechnical investigations for, amongst others, new roads, borrowpits, road rehabilitation, gravel roads, township developments, buildings and structures.  We have had field laboratories on various projects nationally.

Our Company has also previously monitored the Eastern Cape Government Provincial Laboratories in the absence of other qualified personnel. In February 2008, we achieved our SANAS accreditation (ISO/IEC 17025) for the laboratory (reference number T0308).  The tests for which we have been accredited for are as follows:


TEST DESCRIPTION

TEST METHOD

Sieve analysis to 75 microns and Atterberg limits

TMH 1 A1; A2; A3; A4 (1979); A5

MOD AASHTO moisture density relationship

 

a)  Natural

TMH 1 A7

CBR -     Natural

TMH 1 A8

CBR -     Stabilised

TMH 1 A9

Unconfined compressive strength: curing and crushing

TMH 1 A14

Indirect tensile strength: compacting, curing, crushing

TMH 1 A16T

Compaction control - sand replacement

TMH 1 A10 (a)

Compaction control - nuclear gauge

TMH 1 A10 (b)

Aggregate crushing value

TMH1 B1 Ref SABS 841

10% fine aggregate crushing value (FACT)

TMH1 B2 Ref SABS 842

Flakiness index

TMH 1 B3T Ref SABS 847

Sieve analysis of coarse aggregates

TMH 1 B4   Ref SABS 829

Sieve analysis of fine aggregates

TMH 1 B4   Ref SABS 829

Bulk density of coarse and fine aggregates

TMH 1 B9   Ref SABS 829

Relative density

TMH 1 B14; B15

Manufacturing, curing and compressive strength concrete cubes

TMH1 D1

Slump test

TMH 1 D3

Marshall stability and flow on briquettes supplied

TMH 1 C2

Asphalt bulk relative density

TMH 1 C3

Indirect tensile strength asphalt

TMH 1 C12 T

Maximum theoretical relative density (Rice’s method)

TMH 1 C4 (a)

Binder content

TMH 1 C7 (b)

 OUR PHILOSOPHY

Our company is totally committed to maintaining the high technical standards within the civil engineering materials field and therefore have assisted the Walter Sisulu University of Technology (previously the Eastern Cape Technikon and Border Technikon) by making available our laboratory facilities and staff for practical laboratory experiments.  We have served on the advisory committee for the Water Sisulu University of Technology and were awarded a certificate of recognition by them on 10 May 1999.  We also employ students for experiential training as required by such institutions.

Training for our staff consists of in-house training and the testers’ courses offered by the Society for Asphalt Technology.  These courses are run from our laboratory and our premises.

From a social standing as a company, we feel strongly about poverty alleviation and assist with these projects whenever possible by offering free technical advice and testing.  One such project was the establishment of a block making operation on the Van Der Liej Pilot Housing Project.