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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 17 Abstracts search results
Document:
SP64
Date:
July 1, 1980
Author(s):
Editor: William P. Liljestrom
Publication:
Symposium Papers
Volume:
64
Abstract:
SP-64 This symposium of 16 papers covers international developments, field service reports on existing installations and research. Reports on applications of shrinkage-compensating concrete in hydraulic structures, cold storage warehouse, slabs, bridge decks, oil well cementing, post-tensioned structures.
DOI:
10.14359/14116
SP64-04
Jack E. Rosenlund
A description of the role of the architect, engineer, laboratory, and contractor in the design and construction of this all cast-in-place concrete structure is given. Di scusses shrinkage control to reduce cracking, and the dual role played by shrinkage-compensating concrete and post-tensioning in achieving this. Explains field, as well as laboratory, testing of concrete to determine effect and amount of expansion experienced.
10.14359/6671
SP64-13
Frank A. Randall, Jr.
Reports on a field survey of over 100 projects including parking structures, slabs on ground, and miscellaneous installations that used shrinkage-compensating cement concrete. Fifty nine of the projects were rated on the effectiveness in reducing drying shrinkage cracks and it was concluded that, on average, the cement was very effective. Six years later seventeen of them were re-examined and it was found that the cement was still very effective. Cracks are plotted on several plan drawings. A number of the projects were inspected several times within a year to determine the rate and extent of cracking. Some causes of cracking due to drying shrinkage are discussed. Twelve projects of portland cement concrete were also reported.
10.14359/6680
SP64-14
Richard A. Kaden and E. K. Schrader
This report describes the use of shrinkage-compensating concrete for a spillway chute invert. The contractor elected to use the Type K expansive cement alternate in lieu of the conventional Type II portland cement. A study was made to evaluate compressive strengths for various water-cement ratios, slump loss, restrained expansion, modulus of elasticity, and freeze-thaw durability. Quality assurance testing at the project consisted of casting standard compressive strength specimens and restrained expansion prisms for each of the 18 panels. This use of shrinkage-compensating concrete provided an effective means of crack control for a spillway chute invert slab.
10.14359/6681
SP64-08
Shu-t’ien Li and V. Ramakrishnan
This paper deals with the expansion-shrinkage characteristics, creep, and modulus of elasticity of gap-graded shrinkage-compensating concrete. Type K stir i nltage-compensat ing cement was used. Water-cement ratio was adopted as the main variable parameter. From the results of this investigation it is concluded that for constant aggregate-cement ratio wi th sanie size of aggregates, the expansion level is decreased by increasing the water-cement ratio, and the rate of expansion increases at higher water-cement ratios. Lateral restraint increases the longitudinal expansion as much as 25 percent. The percentage difference in the niaxinium unit longitudinal expansion between restrained and unkstrained specinlens decreases with increasing water-cement ratio. Modulus of elasticity test results are similar to those obtained for gap-graded Type I cement concrete.
10.14359/6675
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