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: Superabsorbent Polymers to Mitigate Autogenous Shrinkage of Cement Mortar
Author(s): Christof Schrofl and Viktor Mechtcherine
Publication: Special Publication
Appears on pages(s): 1-14
Keywords: autogenous shrinkage; cement pore solution; internal curing; high-performance concrete; kinetics of absorption and desorption; neutron radiography; superabsorbent polymers (SAP).
Abstract:Superabsorbent polymers (SAP) made of acrylic acid and acrylamide were studied as chemical admixtures for mitigating autogenous shrinkage of high-performance concrete or mortar, respectively. The absorptivity of the particles in saline solutions and in cement pore solution was investigated. Ca2+ in the alkaline solution modified the absorp¬tivity essentially, which closely depended on the polymer structure. Furthermore, the release of internal curing water from SAP particles into the hardening cement-based matrix was monitored by neutron radiography. The kinetics of uptake and release of cement pore solution by SAP and hence, their molecular structure, could be linked with their efficiency in mitigating autogenous shrinkage of a high-strength mortar. Finally, the compressive strength of these mortars was determined. The addition of SAP had no negative effect, but could even lead to an increase in the compressive strength.
Click here to become an online Journal subscriber