Document Archives

Fatigue of High-Strength Reinforced Concrete

• ID:

  907

• ESCSI:

  4324.008

• Author:

  Mor, A; B.C. Gerwick & W.T. Hester

• Publication Name:

  ACI Materials Journal

• Type of Publication:

  Article

• Publisher:

  ACI

• Dated:

  1972

• Issue/Volume:

  Mar.-April

• Other ID:

• Page(s):

  197-207

• Reference List:

  Y

• Abstract:

  The results of low-cycle fatigue testing of high-strength concrete are presented. Lightweight and normal weight aggregate concretes were tested under reversible loading under both submerged and air-dry conditions. Fatigue capacity of lightweight aggregate concrete was similar to or better than that of normal weight aggregate concrete of similar strength properties. Submersion of high-strength concrete in water did not affect its fatigue capacity. Fatigue capacity of high-strength reinforced concrete was found to be directly related to the bond between concrete and reinforcement and not related to any other strength property. The addition of silica fume to lightweight aggregate concrete improved its bond by 100 percent and its fatigue life by over 60 percent. No significant improvement was observed when silica fume was added to normal weight aggregate concrete. Results of extensive tests on accompanying specimens and post failure tests on the beams are presented.