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Title: DETERMINATION OF THE UNIFORMITY OF MIXING OF PORTLAND CEMENT AND BITUMINOUS CONCRETE FOR VARIOUS MIXING TIMES BY THE USE OF RADIOISOTOPES. Annual Report No. 1, December 1, 1960 to March 31, 1961 (Final Technical Report for That Phase of the Program Dealing with Portland Cement Concrete)

Abstract

Uniformity of mixing is a good criterion by which to judge the quality of a concrete mix and mixing adequacy. Cement content of mortar, fineness modulus of the aggregate, ultimate compressive strength, and visual inspection of mixing quality were used to indicate uniformity. With the exception of cement content, all determinations of the physical characteristics of the concrete were made by conventional tests as specified by the American Society of Testing Materials. Cement content of the concrete mortar was determined by neutron activation analysis of Ca/sup 49/ produced in the Ca in the portland cement. This method of cement content determination proved very feasible and could be used to predict the cement content within approximately 10% of its true value 95% of the time. Mixing time, batch replication, and position in the concrete mixer generally did not have significant effect upon cement content, fineness modulus, and compressive strength for mixers studied. Mixing times varying from 30 to 180 sec were used in evaluating uniformity of mixing. (auth)

Authors:
;
Publication Date:
Research Org.:
Georgia Inst. of Tech., Atlanta. Engineering Experiment Station
OSTI Identifier:
4840677
Report Number(s):
SRO-47
NSA Number:
NSA-15-031073
DOE Contract Number:  
AT(38-1)-202
Resource Type:
Technical Report
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-61
Country of Publication:
United States
Language:
English
Subject:
INDUSTRIAL APPLICATIONS OF ISOTOPES AND RADIATIONS; ACTIVATION ANALYSIS; CALCIUM 49; CEMENTS; EFFICIENCY; MIXING; NEUTRONS; QUANTITATIVE ANALYSIS

Citation Formats

Poovey, C, and Covault, D O. DETERMINATION OF THE UNIFORMITY OF MIXING OF PORTLAND CEMENT AND BITUMINOUS CONCRETE FOR VARIOUS MIXING TIMES BY THE USE OF RADIOISOTOPES. Annual Report No. 1, December 1, 1960 to March 31, 1961 (Final Technical Report for That Phase of the Program Dealing with Portland Cement Concrete). United States: N. p., 1961. Web.
Poovey, C, & Covault, D O. DETERMINATION OF THE UNIFORMITY OF MIXING OF PORTLAND CEMENT AND BITUMINOUS CONCRETE FOR VARIOUS MIXING TIMES BY THE USE OF RADIOISOTOPES. Annual Report No. 1, December 1, 1960 to March 31, 1961 (Final Technical Report for That Phase of the Program Dealing with Portland Cement Concrete). United States.
Poovey, C, and Covault, D O. Thu . "DETERMINATION OF THE UNIFORMITY OF MIXING OF PORTLAND CEMENT AND BITUMINOUS CONCRETE FOR VARIOUS MIXING TIMES BY THE USE OF RADIOISOTOPES. Annual Report No. 1, December 1, 1960 to March 31, 1961 (Final Technical Report for That Phase of the Program Dealing with Portland Cement Concrete)". United States.
@article{osti_4840677,
title = {DETERMINATION OF THE UNIFORMITY OF MIXING OF PORTLAND CEMENT AND BITUMINOUS CONCRETE FOR VARIOUS MIXING TIMES BY THE USE OF RADIOISOTOPES. Annual Report No. 1, December 1, 1960 to March 31, 1961 (Final Technical Report for That Phase of the Program Dealing with Portland Cement Concrete)},
author = {Poovey, C and Covault, D O},
abstractNote = {Uniformity of mixing is a good criterion by which to judge the quality of a concrete mix and mixing adequacy. Cement content of mortar, fineness modulus of the aggregate, ultimate compressive strength, and visual inspection of mixing quality were used to indicate uniformity. With the exception of cement content, all determinations of the physical characteristics of the concrete were made by conventional tests as specified by the American Society of Testing Materials. Cement content of the concrete mortar was determined by neutron activation analysis of Ca/sup 49/ produced in the Ca in the portland cement. This method of cement content determination proved very feasible and could be used to predict the cement content within approximately 10% of its true value 95% of the time. Mixing time, batch replication, and position in the concrete mixer generally did not have significant effect upon cement content, fineness modulus, and compressive strength for mixers studied. Mixing times varying from 30 to 180 sec were used in evaluating uniformity of mixing. (auth)},
doi = {},
url = {https://www.osti.gov/biblio/4840677}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1961},
month = {4}
}

Technical Report:
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