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.
ACI World Headquarters
38800 Country Club Dr.
Farmington Hills, MI
ACI Middle East Regional Office
Second Floor, Office #207
The Offices 2 Building, One Central
Dubai World Trade Center Complex
Phone: +971.4.516.3208 & 3209
ACI Resource Center
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.
Showing 1-5 of 65 Abstracts search results
November 1, 1996
Subrata Datta, Mukul Ray and Tarak Nath Mitra
This paper deals with the very interesting subject of replacement of Expansion Joints of a 50 year old balanced cantilever steel bridge by judiciously using a set of reinforced elastomeric slab seal type expansion joint. The expansion joints installed 50 years ago have been corroded and eroded with time, damaging even the replacement systems which might have been provided originally. As the replacement is being done on a bridge which is on regular use the entire work is being carried out in the night only. Care has been taken to ensure possibility of replacement of the elastomer slab seal at later dates, if necessary, by providing stainless steel fixing bolts nuts and stainless steel bed plates. The specification and methods used for fixing reinforced elastomer slab seal units have been elaborately dealt with in this paper. The paper also contains four drawings and three photographs showing various relevant details of the bridge and the expansion joints.
Agostino Marioni and Alberto Abate
The Italian high speed railway project includes lines for an overall lenth of about 1,500 Km, many of them in seismic areas. This paper gives an overview on the possible static scheme of the bridges together with the relevant hearings, restraints and expansion joints type and layout to be adopted; it describes main technical features of design, production and installation of the bearings, taking into account very high horizontal forces due to braking or to earthquake, high rotation values, corrosion protection and electrical insulation required; furthermore elastic devices had to be provided for a correct behaviour of the girder. The expansion joints have been designed to satisfy severe performance qualifications. Moreover this paper describes the type testing and the quality assurance system of bearings and expansion joints stated by Italian Railway Authority, able to guarantee great durability and reliability of the structures together with easy maintenance and favourable functional conditions.
Brian K. Bramel, Charles W. Dolan, Jude Kostage and J. A. Puckett
An Asphalt Plug Joint (APJ) produced by Koch was physically tested in a pilot study sponsored by the Wyoming Department of Transportation at the University of Wyoming. An APJ was built, instrumented, and cycled to simulate 10 years of service for spring, fall, summer and winter conditions. A crack occurred during the winter cycling and was repaired. The joint was then tested until failure. Failure occurred as a joint material separated from the joint edge. The joint motion was concentrated between the bridging plate and the joint end. The APJ material exhibited both visco-elastic behavior and a brittle transition temperature in the operating temperature range. The pilot study is being extended to further investigate the nature of the joint and the material.
C. Stewart Gloyd
For the Orange County Toll Roads in California, seismic design criteria for bridges has been used which includes a requirement that expansion joints be designed for seismic movement. This departure from traditional practice is part of a design objective
In the north of Cologne (Germany). a suspension bridge across the River Rhine has been enlarged by an additional new deck and by a third plane of stay cables. In this context. new expansion joints for both abutments of the entire bridge as well as bearings for the new third cable plan have been instal-led. Concerning the expansion joints, the structural solutions for the lamellae, the cross bars as well as their connection and bearing are presented. The loadmo¬dels of the static and dynamic analysis in the German and Austrian standards have been compared to each other, and the check on fatigue has been particular¬ly mentioned. As for the bearings (cable saddle and drape point), the sliding elements have shown to be of extraordinary importance. Some new calculations following German standards are introduced.
Results Per Page