Technician Information for Robert Clevenger

First NameRobert
Last NameClevenger
Technician ID02576

Associated Labs

Total 1 item.
Lab NameManager NameFull AddressDistrictPage Alias
Twining LaboratoriesRyan Powney15950 Bernardo Center Drive, Suite J, San Diego, CA 9212711Lab 1

Test Methods

California Test (CT) Certifications

Total 43 items.
Test MethodObtained DateExpiration DateStatusIA ResponsibleWithin Lab(s) ScopeComments
CT 105 Calculations - Gradings (JTCP - HMA I / S&A)2020-01-172023-01-17ExpiredSarbjit GrewalLab 1(No comments)
CT 106 Definitions - Specific Gravity (SpG) 2017-03-122023-06-30ExpiredRoy(Chip) DennerLab 1(No comments)
CT 125 AGG Sampling - AGGREGATES (JTCP - HMA I / S&A)2020-01-172023-01-17ExpiredSarbjit GrewalLab 1(No comments)
CT 201 Sample Preparation - Soil and Aggregates (JTCP - S&A)2020-01-172023-01-17ExpiredSarbjit GrewalLab 1(No comments)
CT 202 Sieve analysis - Fine and Coarse Aggregates (JTCP - S&A)2020-01-172023-01-17ExpiredSarbjit GrewalLab 1(No comments)
CT 204 LL, PL, PI 2021-08-052023-08-05ExpiredRoy(Chip) DennerLab 1(No comments)
CT 205 Percent Crushed Particles (JTCP - S&A)2020-01-172023-01-17ExpiredSarbjit GrewalLab 1(No comments)
CT 206 SpG & Absorption - Coarse Aggregates 2022-10-142024-10-14ExpiredRoy(Chip) DennerLab 1(No comments)
CT 207 SpG & Absorption - Fine Aggregates 2022-10-142024-10-14ExpiredRoy(Chip) DennerLab 1(No comments)
CT 208 Apparent SpG - Fine Aggregates 2022-10-142024-10-14ExpiredRoy(Chip) DennerLab 1(No comments)
CT 214 Sodium Sulfate Soundness 2021-08-052023-08-05ExpiredRoy(Chip) DennerLab 1(No comments)
CT 216 Relative Compaction - Soils and Aggregates (JTCP - S&A)2020-01-172023-01-17ExpiredSarbjit GrewalLab 1(No comments)
CT 217 Sand Equivalent (JTCP - S&A)2020-01-172023-01-17ExpiredSarbjit GrewalLab 1(No comments)
CT 226 Moisture Content - Soils and Aggregates (JTCP - S&A)2020-01-172023-01-17ExpiredSarbjit GrewalLab 1(No comments)
CT 227 Cleanness Value (JTCP - S&A)2020-01-172023-01-17ExpiredSarbjit GrewalLab 1(No comments)
CT 229 Durability (JTCP - S&A)2020-01-172023-01-17ExpiredSarbjit GrewalLab 1(No comments)
CT 231 Relative Compaction - Nuclear Gage 2022-10-192023-10-19ExpiredRoy(Chip) DennerLab 1(No comments)
CT 234 Uncompacted void - Fine Aggregates 2022-04-212024-04-21ExpiredRoy(Chip) DennerLab 1(No comments)
CT 235 Flat and Elongated Particles 2021-08-052023-08-05ExpiredRoy(Chip) DennerLab 1(No comments)
CT 301 "R" Value 2022-10-192023-10-19ExpiredRoy(Chip) DennerLab 1(No comments)
CT 304 Sample Preparation - HMA 2022-10-142024-10-14ExpiredRoy(Chip) DennerLab 1(No comments)
CT 308 Bulk SpG and Density - HMA 2022-10-142024-10-14ExpiredRoy(Chip) DennerLab 1(No comments)
CT 309 Max SpG and Density - HMA 2022-10-142024-10-14ExpiredRoy(Chip) DennerLab 1(No comments)
CT 366 Stabilometer 2022-04-212024-04-21ExpiredRoy(Chip) DennerLab 1(No comments)
CT 367 OBC 2022-04-212024-04-21ExpiredRoy(Chip) DennerLab 1(No comments)
CT 370 Moisture Content by Microwave 2022-10-142024-10-14ExpiredRoy(Chip) DennerLab 1(No comments)
CT 371 Moisture Induced Damage (TSR) 2015-11-272017-11-27ExpiredRoy(Chip) DennerLab 1(No comments)
CT 382 AC Content by Ignition Oven 2022-10-192023-10-19ExpiredRoy(Chip) DennerLab 1(No comments)
CT 384 Combined Grade for HMA using up to 25% RAP 2022-04-212024-04-21ExpiredRoy(Chip) DennerLab 1(No comments)
CT 504 Air Content of PCC - Pressure Method (JTCP - PCC)2017-10-212022-10-21ExpiredJasdeep SandhuLab 1(No comments)
CT 515 Relative Mortar Strength PCC Sand 2022-04-212024-04-21ExpiredRoy(Chip) DennerLab 1(No comments)
CT 518 Unit Weight - PCC (JTCP - PCC)2017-10-212022-10-21ExpiredJasdeep SandhuLab 1(No comments)
CT 521.1 Compressive Strength - PCC (ASTM C39 / C617) 2021-08-052023-08-05ExpiredRoy(Chip) DennerLab 1 Created based on CT521 certificate ID34869
CT 521.2 Compressive Strength - PCC (ASTM C39 / C1231) 2021-08-052023-08-05ExpiredRoy(Chip) DennerLab 1
Created based on CT521 certificate ID34869
CT 523.1 Section B.1 & B.2 Flexural Strength (Field Fabrication) (JTCP - PCC)2021-08-052023-08-05ExpiredRoy(Chip) DennerLab 1(No comments)
CT 523.2 Section B.3 Flexural Strength (Lab Test) 2021-08-052023-08-05ExpiredRoy(Chip) DennerLab 1(No comments)
CT 524 Flexural Strength of Rapid Strength - PCC 2021-08-052023-08-05ExpiredRoy(Chip) DennerLab 1(No comments)
CT 533 Ball Penetration - PCC 2016-06-162018-06-16ExpiredRoy(Chip) DennerLab 1(No comments)
CT 539 Sampling Fresh Concrete (JTCP - PCC)2017-10-212022-10-21ExpiredJasdeep SandhuLab 1(No comments)
CT 540 Making Cylinders - PCC (JTCP - PCC)2017-10-212022-10-21ExpiredJasdeep SandhuLab 1(No comments)
CT 543 Air Content of PCC - Volumetric Method (JTCP - PCC)2017-10-212022-10-21ExpiredJasdeep SandhuLab 1(No comments)
CT 556 Slump - PCC (JTCP - PCC)2017-10-212022-10-21ExpiredJasdeep SandhuLab 1(No comments)
CT 557 Temperature - PCC (JTCP - PCC)2017-10-212022-10-21ExpiredJasdeep SandhuLab 1(No comments)

AASHTO/ASTM Proficiencies

Total 13 items.
Test MethodObtained DateExpiration DateStatusIA ResponsibleWithin Lab(s) ScopeComments
AASHTO T312 Gyratory Compactor 2015-11-042017-11-04ExpiredRoy(Chip) DennerLab 1(No comments)
AASHTO T209 Max SpG and Density - HMA (JTCP - HMA II)2017-02-222019-02-22ExpiredRoy(Chip) DennerLab 1(No comments)
AASHTO T269 Percent Air Voids - HMA (JTCP - HMA II)2017-10-092019-10-09ExpiredRoy(Chip) DennerLab 1(No comments)
AASHTO T308 AC Content (Ignition Oven) - HMA (JTCP - HMA II)2017-10-092019-10-09ExpiredRoy(Chip) DennerLab 1(No comments)
AASHTO T335 Percentage of Fracture (JTCP - HMA I)2017-10-092019-10-09ExpiredRoy(Chip) DennerLab 1(No comments)
AASHTO T324 Hamburg Wheel-Track 2017-12-122019-12-12ExpiredRoy(Chip) DennerLab 1(No comments)
AASHTO T11 Sieve Analysis (Washing) - Fine Aggregates (JTCP - HMA I)2018-02-092020-02-09ExpiredRoy(Chip) DennerLab 1(No comments)
AASHTO T27 Sieve Analysis - Fine and Coarse Aggregates (JTCP - HMA I)2018-02-092020-02-09ExpiredRoy(Chip) DennerLab 1(No comments)
AASHTO T176 Sand Equivalent (JTCP - HMA I)2018-02-092020-02-09ExpiredRoy(Chip) DennerLab 1(No comments)
AASHTO T304 Uncompacted Void - Fine Aggregate 2021-08-052023-08-05ExpiredRoy(Chip) DennerLab 1(No comments)
ASTM D4791 Flat and Elongated Particles 2021-08-052023-08-05ExpiredRoy(Chip) DennerLab 1(No comments)
AASHTO T84 SpG & Absorption - Fine Aggregates 2022-04-212024-04-21ExpiredRoy(Chip) DennerLab 1(No comments)
AASHTO T85 SpG & Absorption - Coarse Aggregates 2022-04-212024-04-21ExpiredRoy(Chip) DennerLab 1(No comments)