• The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal


Title: Experiences in the Use of Superplasticizers in Some Special Fly Ash Concretes

Author(s): Kirsten Eriksen and Pal/e Nepper-Christensen

Publication: Symposium Paper

Volume: 68


Appears on pages(s): 1-20

Keywords: coarse aggregates; compressive strength; fly ash; high-strength concretes; mix proportioning; naphthalene compounds; plasticizers; portland cements; water-reducing agents; workability.

DOI: 10.14359/6462

Date: 1/1/1981

Use of a naphtalene-based superplasticizer at high dosages in concretes made with fly ash (100-150 kg/m3) and a moderate content of portland cement (250-300 kg/m3) results in great water reductions and high strengths (75-80 MPa after 28 days) for concretes with normal workability (slump 5-10 cm). Laboratory investigations concerning mixture proportions and pro-perties of the fresh and hardened concretes with a discussion of physical and chemical influences of the use of the superplasticizer are presented. Increasing problems with the supply of good, in-expensive, natural coarse aggregates may be solved through combined additions of superplasticizers and fly ash to the concrete. This paper further presents experimental evidence of mixture proportions and phy-sical data for socalled "sand-concrete", i.e. concrete without coarse aggregates but with "normal" contents of portland cement and water obtained by the addition of rather large amounts of fly ash and superplasticizers.


Please enter this 5 digit unlock code on the web page.