Page 77 - RoadCem Manual - PCT BV
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4.2.4 Soil Texture
Soil texture refers to the weight proportion of the particles less than 2 mm in size as determined from a laboratory particle-size distribution analysis. Field estimates should be checked against laboratory determinations and the field criteria should be adjusted as necessary.
Figure 4.24 Indication of bearing capacity based on soil texture.
Texture is an important indicator of soil bearing capacity which in turn is one of the main pavement design parameters. In section 4.2.5 the determination of the bearing capacity is explained for in-situ and lab test.
The texture of soil tells us much about the soil in a few words. With texture given, approximations and estimates can be made of many properties of a soil, such as bearing value, water-holding capacity, liability to frost-heave, adaptability to soil-cement construction, etc.
Standard Texture groups have been defined as a function of particle size distribution within a given soil. Figure 4.25 shows an example of soil texture classes.
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