RAPID AND COMPLETE CHEMICAL ANALYSIS OF PORTLAND CEMENT AND SIMILAR PRODUCTS

THIS COMPLETE METHOD OF ANALYSIS OF PORTLAND CEMENT WAS PREPARED ESPECIALLY FOR INDUSTRY LABORATORIES DEPENDING ON RAPID AND ACCURATE RESULTS FOR QUALITY CONTROL OF THEIR CURRENT PRODUCTION. IN THE CEMENT INDUSTRY THERE WAS NEED FOR YEARS OF SUITABLE PROCEDURES FOR RAPID AND QUANTITATIVE DETERMINATION OF THE MAJOR CONSTITUENTS OF CEMENT OR OTHER SILICIOUS MATERIALS. ASSURING DIRECT APPLICATION FOR A QUALITY CONTROL LABORATORY THE ABOVE PROCEDURE WAS WORKED OUT IN A COMPLETE AND SYSTEMATIC MANNER. IT DELIBERATELY AVOIDED MAKING ANY SUGGESTIONS OR OUTLINING DIRECTIONS OF DIFFERENT WAYS IN PERFORMING THE ANALYSIS, LEAVING THE SELECTION OF THE PROPER METHOD TO THE ANALYTICAL CHEMIST OR LESS SKILLED TRAINEE WHO CONDUCTS ROUTINE ANALYSIS AND OTHER LABORATORY WORK AS HIS MAIN TASK. IN ADDITION, RESEARCH WORK IS TIME CONSUMING AND OF QUESTIONABLE RESULT UNLESS PERFORMED BY HIGHLY TRAINED PERSONNEL. THE ABOVE METHOD, HOWEVER, IS A COMPLETE GUIDE FOR THE WORKING CHEMIST ON THE BENCH TO PERFORM HIS OWN ANALYSIS, BECAUSE ALL CALCULATIONS, CALIBRATION GRAPHS, ETC. ARE INCLUDED. COLORIMETRIC AND COMPLEXOMETRIC PROCEDURES ARE THE MOST RAPID AND MODERN ONES IN CHEMICAL ANALYSIS AND SUITABLE ESPECIALLY FOR ROUTINE ANALYTICAL WORK PERFORMED MAINLY IN THE CEMENT LABORATORIES. A SPECTROPHOTOMETER IS NECESSARY FOR THE DETERMINATION OF SILICON OXIDE, FERROUS OXIDE, ALUMINUM OXIDE, SULFITE, TITANIUM OXIDE, AND MAGNESIUM OXIDE (BELOW 3%). CALCIUM OXIDE AND MAGNESIUM OXIDE AND MAGNESIUM OXIDE (ABOVE 3%) ONLY ARE DETERMINED COMPLEXOMETRICALLY BY E.D.T.A. TITRATION USING CALCEIN AND ERIOCHROME BLACK T AS SPECIFIC METAL INDICATORS RESPECTIVELY. FOR DETERMINING THE ALKALIS THE BECKMAN DU FLAMEPHOTOMETER IS REQUIRED. AFTER THE MATERIAL IS DECOMPOSED BY ALKALINE FUSION WHICH IS INDISPENSABLE FOR SILICON OXIDE-DETERMINATION MOST OF THE COMPONENTS OF CEMENT OR SIMILAR PRODUCTS CAN BE DETERMINED OUT OF THE ONE SAMPLE. WITH MINOR MODIFICATIONS SUCH AS VARYING THE WEIGHT OF SAMPLE OR ALIQUOT PORTIONS THIS PROCEDURE CAN BE APPLIED ALSO TO OTHER SILICOUS MATERIALS. THE ACCURACY AND REPRODUCIBILITY OF THIS METHOD AS WELL AS AGREEMENT WITH STANDARD CONVENTIONAL METHODS ARE VERY GOOD. /AUTHOR/

• Supplemental Notes:
  • Vol 19, No 9, PP 412-432
• Authors:
  • Klinkmann, J A
• Publication Date: 1966-9

Media Info

• Serial:
  • Zement-Kalk-Gips

Subject/Index Terms

• TRT Terms: Aluminum compounds; Chemical analysis; Chemical compounds; Colorimetry; Flame photometry; Magnesium compounds; Oxides; Portland cement; Quantitative analysis; Silicon compounds; Spectrophotometers; Test procedures; Titanium
• Old TRIS Terms: Flame photometer; Titanium compounds
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00212504
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 1 1970 12:00AM