THE COLOUR OF UNPIGMENTED CONCRETE. A STUDY OF TWO FACTORS AFFECTING THE COLOUR OF UNPIGMENTED CONCRETE COMMISSIONED BY THE MINISTRY OF PUBLIC BUILDINGS AND WORKS FROM JOHN LAING R AND D, LIMITED

This report assesses the influence on concrete appearance of variations in the consituents and mix proportions, of placing, curing and stripping methods and of weathering. The effects of the following parameters in particular on colour have been partly examined. Cement - type, fineness, particle size distribution. Aggregate - petrological type of fine aggregate, size and grading, silt content, water/cement ratio, aggregate/cement ratio, degree of compaction, influence of pressure on fresh concrete, age at demoulding, curing conditions, weathering, effect of rain-wetting, viewing conditions. /TRRL/

• Corporate Authors:

  Department of the Environment, England

  Saint Christopher House, Southwark Street
  London SE1 0TE,   England 
• Publication Date: 1973

Language

• English

Media Info

• Features: Figures; References;
• Pagination: 19 p.

Subject/Index Terms

• TRT Terms: Compaction; Depressed highways; Grain size (Geology); Loading and unloading; Pigments; Pressure; Truck loading facilities; Water cement ratio; Weathering
• Uncontrolled Terms: Particle size distribution
• ITRD Terms: 1757: Age; 4577: Aggregate; 4758: Cement; 6784: Colour; 5904: Compaction (state of); 4755: Concrete; 4702: Curing (concrete); 5255: Deterioration; 9023: Fine (mater); 4750: Fresh concrete; 4714: Mix design; 6200: Particle size distribution; 4060: Petrography; 5412: Pressure; 2507: Rain; 4149: Silt; 5287: Stripping (binder)
• Subject Areas: Highways; Materials; Terminals and Facilities;

Filing Info

• Accession Number: 00083200
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: R&D Rpt.
• Files: ITRD, TRIS
• Created Date: Jul 2 1975 12:00AM