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: Microcracking and Permeability of Concrete to Liquid Nitrogen
Author(s): Ariel Hanaor
Publication: Journal Proceedings
Appears on pages(s): 147-153
Keywords: compressive strength; concretes; cryogenics; liquefied gases; liquidnitrogen; microcracking; modulus of elasticity; permeability; storage tanks;tensile strength; thermal properties.
Abstract:Liquefied natural gas (LNG) storage tanks are often constructed with alloy steel liners as the primary containers, and concrete outer tanks as secondary containers. Substantial cost saving and enhanced safety could be achieved by employing prestressed concrete in both capacities. For concrete to serve in primary capacity, low permeability has to be demonstrated. Results are presented from a preliminary investigation into the factors affecting concrete permeability to liquid nitrogen [ - 196 C (-321F)]. The results show that the type of aggregate and factors related to aggregate-cement paste interaction play a major role in the process. Permeability coefficients as low as 5 x 10-l9 m2 ( 8 x 10-16 in.2) were obtained. Microcracks observed in tested specimens are thought to result from incompatibilities of the physical and thermal properties between the aggregate and the cement paste. Crack width is probably the primary parameter affecting permeability. The results point to lightweight rounded aggregate as a potentially suitable low permeability concrete-making material.
Click here to become an online Journal subscriber