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
Chat with Us Online Now
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: Effect of Sodium Compounds on the Strength and Microstructural Development of Blast-Furnace Slag Cement Mortars
Author(s): C. Tashiro and T. Yoshimoto
Publication: Special Publication
Appears on pages(s): 1307-1324
Keywords: additives; blast furnace slag; compressive strength; microstructure; mortars (material); slag cements; sodium; Materials Research
Abstract:An investigation was carried out to find a suitable additive for acceleration of strength development in blast furnace slag cement at an early stage hydration. Sodium compounds such as NaF, NaCl, NaBr, NaI, NaOH, Na2SO4, and Na2CO3 were used. The strength development, porosity, scanning electron micrographs, and heat liberation characteristics were examined. Addition of a small amount of NaBr, NaCl, NaF, or Na2SO4 increased the strength at early ages; NaBr or NaCl increased the strength even at 91 days. The microstructure of paste with NaBr or NaCl addition showed a structure containing CSH, gel, AFm, ettringite, and other phases having a compact structure.
Click here to become an online Journal subscriber