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Assuring Quality Lightweight Concrete Depends on Proper Specifications, Field Handling

• ID:

  373

• ESCSI:

  4000.033

• Author:

  Ayres, Raymond

• Publication Name:

  Concrete Industry Bulletin

• Type of Publication:

  Article

• Publisher:

• Dated:

  1969

• Issue/Volume:

  November

• Other ID:

• Page(s):

• Reference List:

• Abstract:

  Assuring quality lightweight concrete depends on proper specifications, field handling.1. Contamination: Stockpiling the lightweight aggregate where it is exposed to spillage of normal weight materials. This, of course, is instrumental in causing a weight problem.
  2. Moisture adjustment: The change between normal weight coarse aggregate having a moisture adjustment of 1% to 2% compared to 6% to 8% with the lightweight aggregate resulting in a loss of yield.
  3. Ready mix procedures: if normal, sound ready mix procedures are observed including proper mixing times, correct mixer capacities, and stockpiling, many of the problems are eliminated before the project is started.