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: Experimental Study on the Rheological Properties of Fresh Foamed Cement Paste and Mortar
Author(s): Toshiyoshi Goto, Akira Yoshino and Shinzou
Publication: Special Publication
Appears on pages(s): 321-342
Keywords: Cement pastes; foaming agents; mortars (materials); plastics, polymers
and resins; rheological properties; segregation; viscosity; yield value
Abstract:Recently in Japan, foamed cement paste and foamed mortar have frequently been used as embankment material on soft ground because of their low unit weight, flowability, and ease of strength control. Conventional uses of these foamed materials include grouting for tunnel voids and for securing pipelines in tunnels. Since each material for foamed cement milk and foamed mortar have a different specific gravity, segregation can occur during mixing, pumping and placing. The mixture proportions of these foamed mixtures is very important, and are usually determined by trial and error. The authors carried out experiments on the rheological properties of cement past, mortar, foamed cement milk and foamed mortar. Compressive strength of these materials were also examined. Obtained results are as follows.(l)Plastic viscosity of foamed cement pastes or mortars are as same as that of cement pastes or mortars. (2)Yield value of foamed mixture decreases with addition of foam less than 30% by volume, and decrease with addition of foam more than 40%. (3)Relation between plastic viscosity and yield value is almost the same as mixtures without foam.(4)Compressive strength of foamed mixtures decreases with increase of foam content , and the tendency is apparent in lower w/c.
Click here to become an online Journal subscriber