Document Archives

Permeability of High Strength Lightweight Concrete

• ID:

  940

• ESCSI:

  4358.001

• Author:

  Zhang, Min-Hong & Odd E. Ojorv

• Publication Name:

  Materials Journal

• Type of Publication:

  Paper

• Publisher:

  ACI

• Dated:

  1991

• Issue/Volume:

  Sept.October

• Other ID:

• Page(s):

  463-469

• Reference List:

  Y

• Abstract:

  Information on the resistance of high-strength lightweight concrete 50 to 100 MPa to water penetration and accelerated chloride penetration is presented. Testing techniques are also discussed. The permeability of high-strength-lightweight concrete appears to be more dependent on the porosity of the mortar matrix than the porosity of the lightweight aggregate. There appears to be an optimum cement content for permeability. A too-high cement content may increase the permeability. No direct relationship between water permeability and electrical conductivity (AASHTO T 277 test method) was observed, but a direct relationship between water permeability and accelerated rate of chloride penetration was observed. Hence, accelerated testing of chloride penetration appears to be a more valuable way to test the permeability than testing the electrical conductivity.