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: Internal cracking and transport properties in damaged concretes
Author(s): Maria Torrijos, Celeste Torrijos, Graciela Giaccio, Taul Zerbino
Appears on pages(s): 109-121
Keywords: Concrete durability, Cracks, Transport propertis, Mesostructure
Abstract:The durability of concrete constructions is strongly related with the transport of fluids through the material. The presence of pores and cracks increases the permeability of the material, enhancing the ingress of aggressive agents that contribute to the material degradation. In this sense the internal structure is decisive, mainly the characteristics of the mortar matrix and the aggregates of greater size and its interfaces. In this work the incidence of different types of cracks on the transport properties is analyzed, considering several cases of degradation: concretes damaged by exposure to low humidity conditions or to high temperatures (150 and 500°C), and a concrete affected by alkali-silica reaction (ASR). The characterization of the internal structure was made at the mesostructural level through the assessment of the density and width of cracks; as transport properties the water absorption, capillary absorption, water penetration and coefficient of water permeability were considered. As expected the width, the density and the type of fissures had a strong impact on the transport properties, however each variable will have a higher or lower incidence depending on the transport mechanism involved. In concretes damaged by drying shrinkage the permeability increased steadily with the crack density, however, the capillary absorption after reaching a maximum decreased for cracks of greater width. At the same time in concrete damaged by ASR, differences were found in the water penetration test in accordance with the crack orientations which were not verified in the values of the coefficient of permeability.
International union of laboratories and experts in construction materials, systems and structures, International Partner Access.
View Resource »