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Final Report
mill PB99-155582
I
TEXTURAL AND MINERALOGICAL CHARACTERIZATION OF
KANSAS LIMESTONE AGGREGATES IN RELATION TO
PHYSICAL TEST RESULTS
| 题名： | Final Report mill PB99-155582 I TEXTURAL AND MINERALOGICAL CHARACTERIZATION OF KANSAS LIMESTONE AGGREGATES IN RELATION TO PHYSICAL TEST RESULTS |
| 作者： | Barbara J. Smith and Ralph G. Pollock |
| 关键词： | Limestone petrography, statistical analysis, staining test, carbonate texture, physical test, ankerite, dolomite, calcite, concrete aggregate,X-ray defraction, QC/QA |
| 摘要： | Suitable limestone aggregate for transportation construction use is becoming less available in Kansas. The more accessible and better aggregates of known sources are being used. Characterization of suitable and unsuitable aggregates by petrographic descriptions and tests has not been done in the state. This study includes characterizing quarry ledge samples by mineralogy and texture and sorting these characteristics for suitability for construction uses. To do this, quarry samples collected in the early 1980*s were cut, polished and treated with a standard acid stain to differentiate the carbonate minerals probably present. Then the surface was treated with acetate to make a permanent, more easily handled record of the mineralogy and texture of each polished and treated surface. The information from these acetate records form a data base that includes the information from the physical testing on the ledge samples. The database includes 550 records from 243 ledges, some ledges providing two or more acetate records called peels for description. The data base supplies the means to sort characteristics for statistical testing. The statistical test chosen was Chi Square (x^) with Cramers V test used to norm the results of the values. Contingency tables were built using categories of color of stained peels, texture and passing or failing classifications for concrete construction. Results of the statistical analyses indicate that there are relationships between the characteristics chosen and passing or failing'. The results are discussed by characteristic. An application concerning verification of aggregate sources is included and discussed as it illustrates the usefulness of the petrographic information. Recommendations are given to further define relationships to mineralogy and texture, to verify these relationships as predictors of passing or failing with new ledge samples, and to summarize the results from these endeavors in a preliminary field tool for use in prospecting for resources and verifying production stockpile consistency with source ledge test results. Tables of relationship based on peel data are included. |
| 报告类型： | 科技报告 |
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