ALCELL® lignin as a superplasticizer
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Date
1990
Authors
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Journal ISSN
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Publisher
University of New Brunswick
Abstract
Several tests were performed on ALCELL® lignin, a by-product of
the ALCELL® pulping process, to determine i f the as-produced lignin can
formulate a superplasticizer for addition i n concrete. As-produced ALCELL®
lignin did not display plasticizing properties though i t did demonstrate
potential as an air entraining admixture.
An efficient method for evaluating candidate superplasticizers has
been acquired from the research done on ALCELL® lignin. This method will
disclose substances which are not superplasticizers or which entrain excessive
amounts of air before a great deal of resources have been wasted.
During the evaluation of ALCELL® lignin i t was revealed that a
more efficient procedure than those currently available to determine the
effective time of a superplasticizer could be developed. Although this
procedure was not obtained, significant steps towards reaching this goal were
achieved. Only one obstacle remains i n the development of this new test for
superplasticizers.