Our Services
Construction Materials Laboratory
Our Services
Construction Materials Laboratory
Our services include:
Aggregate Testing
NTI’s in-house laboratory has been inspected and approved by the Oregon Building Officials Association (OBOA), the City of Portland Bureau of Development Services (COP-BDS), the American Association for Laboratory Accreditation (A2LA Scope of Accreditation), the Washington Association of Building Officials (WABO), the Oregon Department of Transportation (ODOT), and the U.S. Army Corps of Engineers (USACE).
Aggregate Testing
- Accelerated Expansion US ACOE CRD-C148
- Clay Lumps & Friable Particles ASTM C142; AASHTO T112
- Elongated Materials ODOT TM229; ASTM D4791
- Fractured Faces ASTM D5821
- L.A. Abrasion ASTM C131/C535; AASHTO T96
- Lightweight Pieces ASTM C123; AASHTO T113 (2.0 & 2.4 Specific Gravity)
- Moisture Density Relationship - Modified ASTM D1557; AASHTO T180
- Moisture Density Relationship - Standard ASTM D698; AASHTO T99
- No. 200 Wash ASTM C117; AASHTO T11
- Oregon Air Degradation; ODOT TM208
- Organic Impurities ASTM C40
- Sand Equivalent ASTM D2419; AASHTO T176
- Sieve Analysis ASTM C136; AASHTO T27
- Sieve Analysis Combined with No. 200 Wash
- ASTM C136/C117; AASHTO T27/T11
- Soundness - Magnesium or Sodium, 5 cycles ASTM C88; AASHTO T104
- Specific Gravity and Absorption Coarse Aggregate
- ASTM C127; AASHTO T85
- Specific Gravity and Absorption Fine Aggregate
- ASTM C128; AASHTO T84
- Uncompacted Void Content of Fine Aggregate ASTM C1252; AASHTO T304
- Unit Weight and Voids in Aggregate ASTM C29; AASHTO T19
- Wood Particles; ODOT TM225
Aggregate Testing
NTI’s in-house laboratory has been inspected and approved by the Oregon Building Officials Association (OBOA), the City of Portland Bureau of Development Services (COP-BDS), the American Association for Laboratory Accreditation (A2LA Scope of Accreditation), the Washington Association of Building Officials (WABO), the Oregon Department of Transportation (ODOT), and the U.S. Army Corps of Engineers (USACE).
Aggregate Testing
- Accelerated Expansion US ACOE CRD-C148
- Clay Lumps & Friable Particles ASTM C142; AASHTO T112
- Elongated Materials ODOT TM229; ASTM D4791
- Fractured Faces ASTM D5821
- L.A. Abrasion ASTM C131/C535; AASHTO T96
- Lightweight Pieces ASTM C123; AASHTO T113 (2.0 & 2.4 Specific Gravity)
- Moisture Density Relationship - Modified ASTM D1557; AASHTO T180
- Moisture Density Relationship - Standard ASTM D698; AASHTO T99
- No. 200 Wash ASTM C117; AASHTO T11
- Oregon Air Degradation; ODOT TM208
- Organic Impurities ASTM C40
- Sand Equivalent ASTM D2419; AASHTO T176
- Sieve Analysis ASTM C136; AASHTO T27
- Sieve Analysis Combined with No. 200 Wash
- ASTM C136/C117; AASHTO T27/T11
- Soundness - Magnesium or Sodium, 5 cycles ASTM C88; AASHTO T104
- Specific Gravity and Absorption Coarse Aggregate
- ASTM C127; AASHTO T85
- Specific Gravity and Absorption Fine Aggregate
- ASTM C128; AASHTO T84
- Uncompacted Void Content of Fine Aggregate ASTM C1252; AASHTO T304
- Unit Weight and Voids in Aggregate ASTM C29; AASHTO T19
- Wood Particles; ODOT TM225
