LABORATORY TESTING PROCEDURES FOR DETERMING THE CHARACTERISTICS OF ADMIXTURES (IN FRENCH)

THE TESTING PROCEDURES USED AT THE CERILH FOR DETERMINING THE CHARACTERISTICS OF THE FOLLOWING ADMIXTURES ARE DESCRIBED: WATER-REDUCING AGENTS, PLASTICIZERS, AIR- ENTRAINING AGENTS, RETARDERS, ACCELERATORS, ANTI-FREEZE AGENTS, AND WATER-REPELLING AGENTS. NEARLY ALL TESTS ARE CARRIED OUT ON 1/3 RILEM-CEMBUREAU-ISO MORTAR (IN CERTAIN CASES THE W/C RATIO CAN BE MODIFIED). TWO CEMENTS HAVE BEEN USED: ONE CPA (A PURE PORTLAND CEMENT) AND ONE CLK (A CEMENT WITH A HIGH SLAG CONTENT). THE METHODS ALREADY USED FOR INVESTIGATION ON MORTARS HAVE BEEN ADAPTED FOR THE STUDY OF ADMIXTURES. THE VARIOUS TESTS, THE MODIFICATIONS INCORPORATED, THE RESULTS OBTAINED AND THEIR EXPLANATION ARE DESCRIBED. A COMMON PROGRAM IS USED FOR ALL ADMIXTURES IN ORDER TO CHECK WHETHER THEY EXERCISE THE MAIN EFFECT CLAIMED AND WHETHER THEY HAVE GOOD OR BAD SECONDARY EFFECTS. OVER THE PAST TEN YEARS EXPERIENCE HAS BEEN ACQUIRED ON ABOUT FIFTY ADMIXTURES. THE COMMON PROGRAM IS MODIFIED ACCORDING TO THE TYPE OF ADMIXTURE. THE USEFULNESS AND THE REASONS FOR THESE TESTS ARE EXAMINED. THESE METHODS ARE PRESENTED AS A CONTRIBUTION TOWARDS A STANDARDIZATION OF TESTS FOR CONCRETE ADMIXTURES. /LCPC/A/RRL/

• Supplemental Notes:
  • Topic V, RePORT V/3 PP 45-69, 4 PHOT, 7 FIG
• Authors:
  • Venuat, M
• Conference:
  • Intl Symp Admix Mortar & Concr /Belg/
• Publication Date: 1967

Subject/Index Terms

• TRT Terms: Accelerators (Devices); Admixtures; Air entraining agents; Antifreeze; Mortar; Plasticizers; Retarders (Concrete); Standardization; Test procedures; Water cement ratio; Water reducing agents; Water repellents
• Uncontrolled Terms: Characteristics
• Old TRIS Terms: Accelerators; Retarders
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00212781
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: Jun 22 1970 12:00AM