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Freeze-Thaw Testing, Lightweight Aggregate Concretes

• ID:

  990

• ESCSI:

  4384.014

• Author:

  Love, J.R. and T.L. Viness

• Publication Name:

  Submittal

• Type of Publication:

• Publisher:

  Law Engineering Consultanta

• Dated:

  1992

• Issue/Volume:

• Other ID:

• Page(s):

  1-5

• Reference List:

  N

• Abstract:

  Four concrete mixtures were batched and tested in Law Engineering’s laboratory to compare the freeze-thaw durability and compressive strengths of concretes with different lightweight aggregates. Three of the mixtures contained lightweight aggregates; the fourth mixture was a reference which contained a natural sand aggregate only. The mixture were proportioned with the same aggregate volumes to isolate the effect of the different aggregates on the freeze-thaw durability of the concrete.Mixes 1, 2, and 3 had durability factors between 95 and 100 after 300 cycles of freezing and thawing, indicating that these three concretes were relatively unaffected by the test. JTM’s aggregate was used in Mix 2. The relative dynamic modulus of Mix 4 fell below 50 percent of its initial value after 96 cycles of freezing and thawing. Testing of this mixture was terminated after 96 cycles in accordance with ASTM C 666.