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: Admixtures to Reduce the Permeability of Concrete
Author(s): Salil K. Roy and Derek 0. Northwood
Publication: Special Publication
Appears on pages(s): 267-284
Keywords: Admixtures; compressive strength; fly ash; polypropylene fibers; portland
cement; silica fume; waterproofing.
Abstract:Water penetration and premature deterioration are widespread problems in reinforced concrete structures, particularly in the tropics. Many different chemical and mineral admixtures have been proposed as possible solutions. This paper examines high quality concretes modified with fly ash, silica fume, polypropylene fibre or certain chemical admixtures so as to reduce the permeability and hence make concrete more durable and watertight. Experiments were conducted at the National University of Singapore using different combinations of these admixtures supplied by four local manufacturers. A total of 39 mixtures were tested for pressure penetration and water absorption as well as compressive strength. The results show significant variation in the penetrability characteristics of the different concretes tested. Most products had some beneficial effect on pressure penetration, but little influence on absorption. One proprietary ingredient tested was found to greatly reduce both pressure penetration and absorption producing a concrete that was virtually completely watertight.
Click here to become an online Journal subscriber