Rayo - Civil Laboratory Technician - Dubai, United Arab Emirates

Marshall Rayo

Dubai, United Arab Emirates


Civil Laboratory Technician


Materials Testing, Concrete,Soil and Aggregates Testing

Work History


From July 2012

Soil testing
* Aggregates sampling.
* Concrete monitoring.
* Field density test (FDT)

Main Laboratory

From April 2012

Soil testing
* Aggregates sampling.
* Concrete monitoring.
* Field density test (FDT)

Laboratory Technician

Al Futtaim Exova

From August 2007

Al Futtaim Bodycote Testing LLC)
P.O. Box 34924, Dubai, U.A.E.

Job description

• Plans, schedules, assigns and oversees daily work schedules in accordance with laboratory procedures and analysis of sample using documented laboratory test methods and procedures to the accuracy and precision limits required by accredited standards.
• Performs task in a responsible manner with regard to health & safety and good laboratory practices.
• Calculation and checking of test result.

Monotoring of slump (BS 1881 PART 102:1983)
Sampling (ASTM C172-04)
Temperature of concrete (ASTM C 1064-05)
Method of normal of test specimens (BS 1881 PART 111:1983)
Method of determination of density of hardened concrete (BS 1881 PART 114:1983)
Method for determination of compressive strength of concrete cubes (BS1881 PART 116:1983)

Dubai Metro Project

June 2007 - March 2011

Aggregates sampling.
* Concrete monitoring.
* Field density test (FDT)

Laboratory Technician

Philippine Geo-Analytics

June 1995 - February 2002

#21 Scout de Guia St., Roces Avenue
Quezon City, Philippines

• Conduct quality test of aggregates such as grading sieve analysis, unit weight determination, specific gravity and absorption test, abrasion test, soundness test and natural moisture test.
• Concrete Testing such as compression/compressive strength determination, unit weight, cube making, sampling of cylinders and beam blocks, slump test and temperature monitoring of fresh concrete.
• Cement Testing such as sampling of mortar cubes, normal consistency/fineness test, time-setting by Vicat apparatus.
• Soil Testing such as grading/sieve analysis, compaction test, California- bearing ratio, field density test.

Training and Seminars
➢ In house training working safely (8th of May 2008)
➢ Customer Care - The Basic Training Course (Laboratory Service Representative)
(5th December 2010)

Elengation of Index

Method of determination of moisture content (812 PART 109:1990)
Method of determination of density
Coarse and Fine Aggregates ( British & American Standards / BS and ASTM )

• Performs Relative Density & Water Absorption of Coarse Aggregates.
• Performs Soundness of Coarse Aggregates using Sulphate Solution.
• Performs Sand Equivalent value of soils & fine Aggregates.
Performs Elongation & Flakiness Index of Coarse Aggregates
• Performs Los Angeles Abrasion Test
• Performs Moisture Content of soils & Aggregates.
• Performs Aggregate Impact value
• Performs Aggregate crushing value.

Field Density Test



Flakiness Index

Materials Testing


Qualifications & Certifications

Muntinlupa National High School

Cupang Elementary School

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