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A platform for research: civil engineering, architecture and urbanism
The bearing capacity of hydraulic fills
Summary In the lower parts of Belgium, Germany, Britain and Holland an increasing number of road sections is laid on hydraulic fills. The scarcity of medium and coarse sand stimulates the use of fine, silty sands. The use of this fine sand may delay the accessibility of the fill surface. In road building the sand for filling can only be stored along the alignment. Hence, frequent extension of the pipe line is necessary. The fill surface should be quickly accessible to bulldozers or other equipment to place the pipe line sections and to grade the surface. The suitability of silty sand for use in hydraulic fills is therefore strongly determined by the increase of its bearing capacity in the course of time. In the past few years a method was developed to predict the development of the bearing capacity from the analysis of samples taken from the borrow site. The method is based on the combination of three relations:the relation between the C.B.R.—value (a measure of the bearing capacity) and moisture content,the relation between the moisture content at the surface and the depth of the phreatic level,the relation between the depth of the phreatic surface and the time elapsed after construction of the fill. The predictions were tested on two experimental sections of different fills. The agreement between the predictions and measurements appears satisfactory.
The bearing capacity of hydraulic fills
Summary In the lower parts of Belgium, Germany, Britain and Holland an increasing number of road sections is laid on hydraulic fills. The scarcity of medium and coarse sand stimulates the use of fine, silty sands. The use of this fine sand may delay the accessibility of the fill surface. In road building the sand for filling can only be stored along the alignment. Hence, frequent extension of the pipe line is necessary. The fill surface should be quickly accessible to bulldozers or other equipment to place the pipe line sections and to grade the surface. The suitability of silty sand for use in hydraulic fills is therefore strongly determined by the increase of its bearing capacity in the course of time. In the past few years a method was developed to predict the development of the bearing capacity from the analysis of samples taken from the borrow site. The method is based on the combination of three relations:the relation between the C.B.R.—value (a measure of the bearing capacity) and moisture content,the relation between the moisture content at the surface and the depth of the phreatic level,the relation between the depth of the phreatic surface and the time elapsed after construction of the fill. The predictions were tested on two experimental sections of different fills. The agreement between the predictions and measurements appears satisfactory.
The bearing capacity of hydraulic fills
Nieuwenhuis, J. D. (author)
1974
Article (Journal)
English
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