In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
Feedback via Email
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: Influence of D-Sorbitol on the Properties of Binders to Immobilize Acid Nuclear Wastes
Author(s): M. Collepardi, G. Grossi, M. Pellizon Birelli, and G. Ventura
Publication: Special Publication
Appears on pages(s): 525-532
Keywords: blast furnace slag; fly ash; nuclear wastes; solidification/stabilization; sorbitol
Abstract:A combination of ground granulated blast furnace slag, fly ash and calcium hydroxide has been used to immobilize acid nuclear wastes in the form of a hardened system in the absence of any aggregate. An aqueous solution of NaOH (19 M) was used for two purposes: first, to neutralize the acid waste and to transform it in a very basic system (pH>13); second, to activate the hardening of the binder. Due to the liquid-solid ratio lower than 0.70, the fresh mixture is relatively stiff. Superplasticizers based on sulfonated naphthalene and melamine or acrylic polycarboxylate do not work to fluidify this system. D-Sorbitol as well as other alditols are very effective in terms of higher workability and lower workability loss of this cementitious system. Surprisingly this chemical admixture increases the compressive strength of this cementitious grout at both early and longer ages at a given waterbinder ratio. The properties of this cementitious system in the absence and in the presence of D-sorbitol as chemical admixture (0.2-0.5% by weight of binder) have been studied in the form of workability of the fresh mixture, early and later compressive strength, leachability by water and X-ray diffraction analysis of the hydrated products of the hardened system.
Click here to become an online Journal subscriber