GeoStructures, Inc.
King of Prussia,
Pennsylvania
View Accreditation Certificate
Eric
Seksinsky
1000 West 9th Avenue
King of Prussia
,
Pennsylvania
19406
Phone: (610) 265-1818
Fax: (610) 265-1833
eseksinsky@geostructures.net
http://www.geostructures.net
25-5698 : Accreditation has been suspended for Aggregate standard(s) T84, C128
25-5698 : Accreditation has been suspended for Quality Management System standard(s) C1077 (Aggregate)
Quality Management System - accredited since 1/2/2003
R18, C1077 (Concrete), D3666 (Aggregate), D3666 (Asphalt Mixture), E329 (Aggregate)
Asphalt Binder - accredited since 12/22/2022
T49, D5
Emulsified Asphalt - accredited since 12/22/2022
T59 / D6997 (Residue by Distillation)
T59-T72 / D7496-D88 (Saybolt Furol Viscosity at 25°C (77°F))
T59-T72 / D7496-D88 (Saybolt Furol Viscosity at 50°C (122°F))
Asphalt Mixture - accredited since 12/22/2022
T30, T166, T209, T308, T312, D2726, D2950, D5444, D6307, D6925
Soil - accredited since 1/2/2003
R58, T88, T89, T90, T99, T100, T180, T193, T208, T216, T236, T265, T288, T289, T290 (Method B), T291, T296, T297, D421, D422, D698, D854, D1557, D1883, D2166, D2216, D2435, D2487, D2850, D3080, D4318, D4767, D4972, D5084, D6913, D6938, D7928, G187
Aggregate - accredited since 10/6/2022
R76, T11, T27, T85, T96, T104, T255, C88, C117, C127, C131, C136, C535, C566, C702
Concrete - accredited since 7/27/2012
C31 (Cylinders), C39, C138, C143, C172, C173, C231, C511, C617 (12000 psi and below), C1064, C1231 (7000 psi and below)
Masonry - accredited since 1/3/2017
C511 (Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the testing of Hydraulic Cements and Concretes)
C1019 (Sampling and Testing Grout)
C1314 (Prisms Constructed of Reduced-Size Concrete Masonry Units) (Compressive Strength of Masonry Prisms)
C1552 (Capping Concrete Masonry Units, Related Units and Masonry Prisms for Compression Testing)
Please note that our accreditations do not include an expiration date. An accreditation only expires when the laboratory fails to comply with our accreditation requirements.
* This information is only valid as of 5/13/2026. Please visit https://aashtoresource.org for current accreditation status.
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