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: Mass Concrete Properties at High Temperatures
Author(s): K. W. Nasser and R. P. Lohtia
Publication: Journal Proceedings
Appears on pages(s): 180-186
Keywords: age;compressive strength;concretes;curing;elastic properties;high early strength cements;high temperature tests;mass concrete;modulus of elasticity; moisture content;nuclear reactors;pressure vessels;research.
Abstract:Tests were performed on mass concrete cylinders for over 6 months at temperatures of 35 to 450 F. Two types of intial curing were used: some cylinders were exposed to the different temperatures at 1 day while others were heated from 14 days onward. The strength and elastic properties of the concrete were determined at several intervals during 6 months. Aminimum of three cylinders were tested at each condition and over 350 specimens were tested. The results show that strength and elasticity are independent of temperature from 35 to 200 F starting at about 28 days. However, at higher temperatures both properties are affected adversely and significantly. After 6 months of exposure to 450 F, the showed a loss in strength and elasticity of about 50 to 68 percent, respectively. The intial curing conditions did not influence the results significantly. Speculation as to the cause of deterioration under high temperatures is attributed to the change of the atobermorite gel into weak and crystalline phases of poor cementing qualitites.
Click here to become an online Journal subscriber