ISSN: 0149-6123
Page Count: 6

Two-Hour Zero Slump Loss, High-Strength Pumpable Concrete—An Application Case in Dam Structure
Feng, N
Tsinghua University,

Zhuang, Q
Tsinghua University,

(Received 20 February 1998; accepted 22 August 1996)

Abstract

About 700 000 m³ of pumpable concrete, which was produced by a high-range water-reducing admixture (HRWRA) and relatively low-strength cement, was used in the Xiao Lang Di water conservancy project. The concrete achieved a 28-day compressive strength as high as 90 MPa, a slump of 20 cm, and almost no slump loss in 2.5 h after mixing, as well as good freeze-thaw durability. The paper describes in detail the mix proportions, the method to control slump loss, and the related mechanical properties.

Keywords:
dam concrete, fluidizing agent, high-range water-reducing admixture (HRWRA), pumpable concrete, slump loss

Paper ID: CCA10416J
DOI: 10.1520/CCA10416J
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