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Lightweight Structural Concrete with “Aglite” Aggregate: Mix Design and Properties

• ID:

  379

• ESCSI:

  4000.039

• Author:

  Dhir, K., R.G.C. Mays, and H.C. Chua

• Publication Name:

  International Journal of Cement Composites and Lightweight Concrete

• Type of Publication:

  Article

• Publisher:

• Dated:

  1984

• Issue/Volume:

  Vol. 6 #4 - Nov.

• Other ID:

• Page(s):

  249-261

• Reference List:

  Y

• Abstract:

  This study into the use of “all-lightweight” aggregate (Aglite) for making structural concrete is in two parts. The first deals with mix design, and a method utilizing pfa to impart desired cohesiveness and a water-reducing admixture (Conplast 337) to impart adequate workability is proposed which is capable of producing “all lightweight” aggregate concrete with 28-day compressive strength up to 50 N/mm² for normal water and air-curing respectively. The tensile strength and the modulus of elasticity are shown to increase at a decreasing rate with compressive strength, but Aglite concrete shows a more brittle failure than normal concrete. The range of drying shrinkage values is comparable to that observed for concrete made with normal aggregate (crushed-rock or gravel) of a low shrinkage value. In short, “all-Aglite” concrete may be used for all structural applications.