Materials and Road Research | Concrete engineering
Coarse Aggregate Alkali Silica Reactivity (ASR)
Introduction
MnDOT Specification for Concrete Pavement and Concrete Bridge Decks require mitigation of reactive coarse aggregate identified as quartzite or gneiss.
Requirements
- MnDOT requires mitigation based upon the alkali silica reactivity (ASR) ASTM C1293 expansion test results for each individual coarse aggregate source.
- Review MnDOT Specifications to determine mitigation requirements.
- Contact the MnDOT Concrete Unit if the proposed coarse aggregate source is not listed on the table below.
ASTM C1293 Test Results
Pit Number | Coarse Aggregate Source | Expansion Result |
---|---|---|
17001 | Quartzite - Jeffers | 0.095 |
52003 | Quartzite - New Ulm | 0.082 |
65065 | Gneiss - Briellmaier | 0.051 |
87002 | Gneiss - Granite Falls | 0.033 |
92001 | Quartzite - Dell Rapids | 0.114 |
92003 | Quartzite - Sioux Falls | 0.095 |