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Home > Publications > International Concrete Abstracts Portal
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.
Title: Impact of Lignin-Based AE Water-
Reducing Agent, and BNS- and
PCE-Based Superplasticizers on the
Properties of Hardened Concrete
Author(s): M. Ohno, T. Sugiyama, T. Sugamata, and A. Ohta
Publication: Special Publication
Appears on pages(s): 371-380
Keywords: B-naphthalenesulfonate-based (BNS); durability; ligninbased; polycarboxylate superplasticizer.
Abstract:Lignosulfonate-based air-entraining (AE) water-reducing agents have been used in various concrete structures for over 50 years. Polycarboxylate-based
superplasticizers, which are the main superplasticizers in use today, have been
on the market for 20 years and have recently been applied to various kinds of
concrete structures. Therefore, it is important to know the difference that these
three dispersants (lignosulfonate-based (LG), B-naphthalenesulfonate-based (BNS), and polycarboxylate-based (PC)) have on concrete durability. The authors, using superplasticizers containing each dispersant, studied the properties of concrete at a w/c of 0.50 up to the age of 20 years. This paper discusses the experimental results up to the age of 3 years following standard curing and artificial sea water curing, and under normal external exposure and exposure in a splash zone. As a result, no major difference has been observed in the effect on properties of the hardened concrete between PC and BNS, dispersants in superplasticizers. In addition, the authors consider that concrete incorporating PC-based superplasticizer or BNS-based superplasticizer has equal durability to that of concrete incorporating an AE waterreducing
agent, most of which is in service over the long term.
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