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Internally sealed concrete

Author: G H Jenkins; J M Butler; Dayton Laboratory.; United States. Federal Highway Administration.
Publisher: Dayton, Ohio : Monsanto Research Corp., Dayton Laboratory, 1975.
Edition/Format:   Print book : National government publication : English
Summary:
A process for internally sealing concrete was developed which prevents intrusion of chlorides and other corrosive compounds. Small particles of an inert thermoplastic sealant added to the initial concrete mix are later triggered by warming to fuse and flow into the fissures and capillaries of the cured structure. A low cost sealing additive was developed which fuses at moderate temperatures and, at 2-1/2%  Read more...
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Material Type: Government publication, National government publication
Document Type: Book
All Authors / Contributors: G H Jenkins; J M Butler; Dayton Laboratory.; United States. Federal Highway Administration.
OCLC Number: 1484334
Notes: Report No. FHWA-RD-75-20.
PB 243 011/AS.
Final report prepared for the Federal Highway Administration; its R & D report M 0198.
Monsanto report no. MRC-DA-469.
Description: ix, 98 pages : illustrations.
Contents: Introduction --
Summary and conclusions --
Materials --
Sample preparation --
Development of a sealing additive system --
Heat treating --
Large scale demonstration --
Recommendations --
Appendices.
Responsibility: G.H. Jenkins and J.M. Butler.

Abstract:

A process for internally sealing concrete was developed which prevents intrusion of chlorides and other corrosive compounds. Small particles of an inert thermoplastic sealant added to the initial concrete mix are later triggered by warming to fuse and flow into the fissures and capillaries of the cured structure. A low cost sealing additive was developed which fuses at moderate temperatures and, at 2-1/2% concerntration, completely blocked chloride penetration through ninety days ponding with a 3% NaCl solution. Particle shape was shown to affect the compressive strength of sealed concrete, and a process was developed to produce additive spheres for maximum strength.

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Primary Entity

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