Concrete Admixtures: ASR_mitigation
Concrete chemical admixture reference data — ASTM C494 Types A/B/C/D/E/F/G/S, ASTM C260 air-entraining, calcium nitrite corrosion inhibitors, VMA, SRA, and lithium nitrate ASR mitigation. Parameters include dosage range (mL/100 kg cement), water reduction (%), initial/final set time change (min), compressive strength effect at 1/7/28 days (%), slump increase (mm), air content change (%), and compatibility notes.
| admixture type | product class | air content change pct (%) | astm standard | common name | compatibility notes | dosage max mL per 100kg (mL/100kg-cement) | dosage min mL per 100kg (mL/100kg-cement) | dosage typical mL per 100kg (mL/100kg-cement) | set time change final min (minutes) | set time change initial min (minutes) | slump increase mm (mm) | strength 1d pct change (%) | strength 28d pct change (%) | strength 7d pct change (%) | water reduction max pct (%) | water reduction min pct (%) | water reduction typical pct (%) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ASR_mitigation | lithium_nitrate_LiNO3 | 0 | FHWA | Lithium nitrate ASR mitigation admixture | 30% LiNO3 solution; target [Li]/[Na+K] molar ratio = 0.74; dose = 4.6 L of 30% solution per kg Na2Oeq in mix; for reactive aggregates; no effect on workability or strength at recommended dose; test with ASTM C1293 or C1567 | 8,000 | 2,000 | 4,600 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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