MGV GEOTECHNICAL GROUP, PSC
Geotechnical Engineering Services in Puerto Rico
Laboratory Service
Our firm maintains a fully equipped soil and concrete testing shop and is currently accredited by AASHTO and certified by the Corps of Engineers. All physical testing of soil and aggregates are performed in accordance with ASTM, AASHTO, USACE, PRHWA, ACI or other applicable testing specifications. Skilled technicians utilizing state-of-the-art equipment assure that high quality standards are maintained. A quality assurance program that provides for regular review, update of staff skills and training, schedule of routine maintenance and calibration of laboratory equipment is maintained. A computer system facilitates precise computation and presentation of laboratory data.
Services Include:
Tests Services for Aggregates and Soil Laboratory Testing
–Reducing sampler C-702, D-75
Sieves Analysis ASTM C-117 & C-136
(MGV Facilities), Sand & Gravel
–*Classification test (According to ASTM D 2487) Standard or Modified Proctor Test (According to ASTM D-698 OR D1557)
–Atterberg Limit ASTM D-4318
LA Abrasion Test ASTM C-131 & 535
(MGV Facilities)
–Aggregate Soundness ASTM C-88, 5 Cycles
(MGV Facilities)
–Flat & Elongated Test ASTM D-4791
(MGV Facilities)
–Fracture Face Test ASTM D-5821(MGV Facilities)
Organic Impurities ASTM C-40
(MGV Facilities)
–Specific Gravity ASTM C-127/ C-128
(MGV Facilities)
–Clay Lumps-Friable Particles ASTM C-142
(MGV Facilities)
–Sand Equivalent ASTM D-2419
(MGV Facilities)
–Organic Matter Content AASTHO T-267
(MGV Facilities)
–PH of Soil ASTM 4972
–Specific Gravity of Soil ASTM D-854
–Moisture Content of Soil ASTM D2216
Ferrous Stain AC 150/5370-10G
–Field CBR Test ASTM D-6951
(USCE Dual Mass Dynamic Cone Penetrometer Equipment) Laboratory CBR ASTM D-1883 Consolidated Soil Test ASTM D 7180 UU Triaxial ASTM D2820
Concrete Cylinder Tests
Description of work
–BEAMS C-31 MAKING AND CURING CYLINDERS C-31 ‘’ COMPRESSIVE STRENGTH C-39 FLEXURAL STRENGHT C-78 Unit Weight C-138
–Air Meter Test c-173 & c-231
–Slump test (ASTM C143)
–SAMPLING FRESHING MIXED CONCRETE C-172 MECHANICAL MIXING OF HYDRAULIC CEMENT PASTES AND MORTARS OF PLASTIC CONSISTENCU C-305 CAPPING CYLINDRICAL C-617 TEMPERATURE OF FRESHLY MIXED PORTLAND CEMENT C-1064
NON-DESTRUCTIVE TESTING ASTM C-803
Windsor Probe Test
STEEL RE-BARS TESTING
–Tension Test of re-bars #3 to #7
–Tension Test of re-bars #10 to # 9
–Tension Test of Re-bars #10 to # 11
Cores Testing Services
EVALUATING THE POTENTIAL FORDELETERIOUS REACTIONS OF COMBINATIONS OF HYDRAULIC CEMENT,AGGREGATE, AND SLAG CEMENT. (ASR)
–ASTM C-1567 – Determining the potential alkali-silica reactivity of combinations of cementitious materials and aggregate (Accelerated Mortar-Bar Method).
–ASTM C-1260 – Potential alkali reactivity of aggregates (Mortar-Bar Method).
–ASTM D-2726 – Bulk specific gravity and density of non-absorptive compacted bituminous mixtures.
–ASTM D-2950 – Density of asphalt by nuclear methods.
–ASTM D-3203 – Percent air voids in compacted dense and open bituminous paving mixtures.
–ASTM C-1064 – Temperature of asphalt.
–ASTM D-6927 – Marshall stability and flow test for asphalt mixtures.
–ASTM D-5444 / AASHTO T-30 – Mechanical size analysis of extracted aggregates.
–ASTM D-2172 – Bitumen extraction and thickness determination of asphalt cores (6” diameter).
PULL OFF TEST
We will provide an experienced engineer to conduct the pullout test. Three (3) dollies will be
installed in each area. The testing will be carried out in accordance with ASTM C1583,
“Standard Test Method for Tensile Strength of Concrete Surfaces and the Bond Strength or
Tensile Strength of Concrete Repair and Overlay Materials by Direct Tension (Pull-off Method).”
This procedure is used to evaluate the tensile bond capacity between the existing concrete slab
and the new overlay material. In addition, a qualified technician will be supplied with the
necessary equipment to perform drilling operations following the requirements of ASTM C42.