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Determination of polyhydroxy carboxylic acid retarder in hardened concrete

Frederick, W.L. / Ellis, J.T.

Colorimetric method for determining polyhydroxy carboxylic acid retarder in hardened concrete containing limestone, gravel, or slag aggregate was developed in view of varying effects of retarders on different cements, and to resolve suspected cases of erroneous dosage; results did not differ significantly when concretes varying in age from time of final set to 1 yr were analyzed; determination must be based on calibration step using concrete containing known amounts of retarder and composed of same ingredients and mix proportions as concrete to be analyzed; Darex air-entraining agent did not interfere, but other admixtures or contaminants should be guarded against.

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Determination of polyhydroxy carboxylic acid retarder in hardened concrete

Frederick, W.L. / Ellis, J.T.

Colorimetric method for determining polyhydroxy carboxylic acid retarder in hardened concrete containing limestone, gravel, or slag aggregate was developed in view of varying effects of retarders on different cements, and to resolve suspected cases of erroneous dosage; results did not differ significantly when concretes varying in age from time of final set to 1 yr were analyzed; determination must be based on calibration step using concrete containing known amounts of retarder and composed of same ingredients and mix proportions as concrete to be analyzed; Darex air-entraining agent did not interfere, but other admixtures or contaminants should be guarded against.

Determination of polyhydroxy carboxylic acid retarder in hardened concrete

Frederick, W.L. / Ellis, J.T.

Colorimetric method for determining polyhydroxy carboxylic acid retarder in hardened concrete containing limestone, gravel, or slag aggregate was developed in view of varying effects of retarders on different cements, and to resolve suspected cases of erroneous dosage; results did not differ significantly when concretes varying in age from time of final set to 1 yr were analyzed; determination must be based on calibration step using concrete containing known amounts of retarder and composed of same ingredients and mix proportions as concrete to be analyzed; Darex air-entraining agent did not interfere, but other admixtures or contaminants should be guarded against.

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Title:

Determination of polyhydroxy carboxylic acid retarder in hardened concrete

Additional title:

Matls Research and Standards

Contributors:

Frederick, W.L. (author) / Ellis, J.T. (author)

Published in:

Materials Research and Standards ; 8

Publication date:

1968

Size:

5 pages

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

© Metadata Copyright Elsevier B. V. All rights reserved.

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