Laboratory Materials Testing

Our laboratory capabilities range from standard soils, concrete, asphalt and aggregate testing to more complex tests needed for the job. Standard testing services offered follow the American Association of State Highway and Transportation Officials (AASHTO), ASTM International (ASTM), Federal Highway Administration (FHWA), and various state Department of Transportation (DOT) test methods. Colorado Department of Transportation (CDOT) tests are frequently performed; state-of-the-art methods are also routinely performed.

The team also employs numerous highly experienced laboratory testing technicians who are all very knowledgeable in AASHTO, ASTM, state DOT and other regulatory agency specifications. For Colorado DOT projects, testing per Colorado Procedures (CP) and Colorado Procedure – Laboratory (CP-L) procedures is followed. Our laboratory testing technicians have experience working in state and federal laboratories providing specialized testing for a variety of design and construction phase projects. We are capable of conducting a variety of materials tests, including concrete and asphalt mix design testing. A listing of the primary tests RockSol can perform is presented below. Inquiries about RockSol’s capability to perform other test methods not listed are welcome.

Soils Testing Capabilities

Test Method	ASTM	AASHTO	CDOT
Moisture Content	D2216	T265	CP 23
In-Place Moisture/Density by Nuclear Gauge	D6938	T310	CP 80
*Particle Size Analysis (Hydrometer Analysis)	D422	T88	-
Material Finer than No. 200 Sieve	D1140	-	-
Gradation of Soils Using Sieve Analysis	D6913	-	CP 21
Atterberg Limits (LL,PL,PI)	D4318	T89,T90	-
One Dimensional Swell or Settlement	D4546	-	-
One Dimensional Consolidation	D2435	T216	-
Sand Equivalent	D2419	T176	-
Standard Proctor Compaction	D698	T99	CP 23
Modified Proctor Compaction	D1557	T180	CP 23
*Unconfined Compressive Strength of Cohesive Soil	D2166	T208	-
Specific Gravity	D854	T100	CP-L 3103
pH	D4972	-	-
Water Soluble Sulfate Content	-	-	CP-L 2103
*Electrical Resistivity	G57, G157	-	-
Dry Preparation of Disturbed Soil & Soil Aggregate Samples	D421	R58	CP 20
Soils Classification	D2487	M145	-
Description and Identification of Soils	D2488	-	-

Concrete Testing Capabilities

Test Method	ASTM	AASHTO	CDOT
Making and Curing Test Cylinders in the Field	C31	T23	CP 61
Use of Un-bonded Caps Compressive Strength	C1231	T22	-
Compressive Strength of Cores	C42	T24	-
Compressive Strength Cylinders	C39	-	-
Flexure Test of Concrete Beams	C78	T97	-
Slump	C143	T119	-
Density, Yield and Air Content	C138	T121	-
Air Entrainment	C231	T152	-
Sampling Freshly Mixed Concrete	C172	-	CP 61
PCCP Temperature	C1064	-	-
Curing Facilities	C511	-	-

Aggregate Testing Capabilities

Test Method	ASTM	AASHTO	CDOT
Moisture Content	C566	T255	-
Particle Size Analysis	C136	T27	-
Particle Size Analysis (-200)	C117	T11	-
Organic Impurities	C40	T21	-
Sand Equivalent Index	D2419	T176	-
Lightweight Pieces in Aggregate	C123	T113	-
Clay Lumps and Friable Particles	C142	T112	CP-L 4200
Specific Gravity and Absorption of Fine Aggregate	C128	T84	CP-L 4102
Specific Gravity and Absorption Coarse Aggregate	C127	T85	-
Unit Weight and Voids	C29	T19	-
Sample Reduction	C702	T248	-
Soundness of Aggregates, Sodium Sulfate, Magnesium Sulfate	C88	T104	-