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 Lab Certificate #3087.01 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 Lab Certificate #3087.01 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
