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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:
SP104-05
Date:
October 1, 1987
Author(s):
C. Vipulanandan and N. Dharmarajan
Publication:
Symposium Papers
Volume:
104
Abstract:
The influence of a silane coupling agent on the mechanical properties of polyester polymer concrete with and without glass fiber reinforcement has been investigated. The silane was incorporated into the polymer concrete systems either by pretreating the aggregates and fibers or by directly adding it into the resin (integral addition method). The flexural properties of polyester polymer and polymer concrete were studied in four-point bending (third point loading) at room temperature. The results indicate that the silane treated aggregate systems increase in flexural strength by more than 50 percent when compared to the untreated systems. The increase in strength is also dependent on the amount of polymer in the polymer concrete. At equivalent loading levels of silane, superior flexural properties were obtained with the pretreatment method than with the integral addition method. The improvement in strength due to the silane coupling agent is explained in terms of chemical interaction between the polymeric matrix and filler. Addition of glass fibers enhances the strength, stiffness and toughness of polyester polymer concrete, and silane treatment of glass fibers helps to further enhance these properties. Behavior models are proposed to predict the enhanced flexural strength of polyester polymer concrete due to pretreatment, integral addition and fiber reinforcement.
DOI:
10.14359/10012
SP104-02
David Darwin
Construction methods and concrete properties affect the bond strength between concrete and reinforcing steel. Research on the effects of concrete slump, consolidation practice, bar position, concrete cover, and bar spacing is summarized. The research show
10.14359/1718
SP104-15
Grant T. Halvorsen
The paper considers the development of crack control provisions in various design codes and recommendations that date back to the 1950s. Detailed attention is given to the provisions of ACI Building Code 318, from which most other crack control provisions
10.14359/1719
SP104-07
Ben C. Gerwick, Jr. and Terence C. Holland
The tremie method has long been the usually selected technique for placing large volumes of mass concrete under water. More recently, it has been used successfully for deep water structural concrete and in deep cut-off walls. The technology for placing la
10.14359/1730
SP104-10
Gary R. Mass
Consolidation is the key to dense concrete and a good surface appearance. Failure to achieve the desired results can often be attributed to the complex interrelationship of consolidation with many other important factors in the construction process. Thes
10.14359/1731
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