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Published byMervin Stanley Modified over 9 years ago
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Influence from ingredients Influence from ingredients W/C W/C Quantity of paste Quantity of paste Sp Sp Aggregates Aggregates Admixture Admixture Influence from environment Time Time Temperature Temperature Test condition Test condition Main influencing factors of Workability
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4.Aggregates Shape and surface texture Size distribution Large particle size Influence of aggregates Main influencing factors of Workability
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Gravel or Pit Sand Coarse texture, multi-angle Low mobility Scree Smooth and Round High mobility Shape and Surface Texture The relationship betweenshape/surface textureand mobility is that: The relationship between shape/surface texture and mobility is that: Gravel or pit sand, coarse texture, multi-angle, cause low mobility. Gravel or pit sand, coarse texture, multi-angle, cause low mobility. Scree cause high mobility, with the smooth and round shape. Scree cause high mobility, with the smooth and round shape.
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Large voidage ( W is certain) Proper size distribution Small voidage (W is certain) High mobility Poor size distribution Poor mobility Size Distribution The relationship between and mobility : The relationship between size distribution and mobility : proper, small pore (W is certain), high mobility proper size distribution, small pore (W is certain), high mobility poor large pore( W is certain), poor mobility poor size distribution, large pore( W is certain), poor mobility
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Large particle size Small surface area (cement paste is certain) High mobility Large Particle Size The relationship between larger particle size and mobility : The relationship between larger particle size and mobility : larger particle size, smaller surface area (cement paste is certain), higher mobility larger particle size, smaller surface area (cement paste is certain), higher mobility
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