Page 74 - RoadCem Manual - PCT BV

Determination of organic content
The organic content can be determined visually and it can be seen directly if there is much humus present, this is shown in Step 4.
Figure 4.22 Organic content of the sub-base.
In a marshy area the sub-base is often rich in peat and contains a high amount of organic matter.
The organic content can be determined using the “loss of organic material” test. Using this test the amount of organic matter in the material is determined. Organic matter does not bind easily and has a lower bearing strength value. Cement cannot be bound with organic matter. When much organic matter is present in the sub-base the amount of RoadCem must be increased.
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