A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
California Pavement Faulting Study
Details of an investigation of faulted concrete pavements constructed on cement treated bases are presented. Various tests and measurements were made on the pavements and construction materials. At some sites, movement of water at the slab base interface was determined by the use of colored tracer sands placed under the slabs several weeks prior to slab removal or coring. Portions of pavement slabs were removed at fourteen sites in three different geographical regions--Valley, Coastal, and Mountain. Ten of the joints thus opened were faulted in amounts varying from 0.10-inch to 0.30-inch. At each faulted joint, a buildup of granular material was found under the approach slab, and in some instances, under the slab as well. The buildup differential was approximately equal to the amount of faulting measured. There was no evident settlement or faulting of the cement treated base course. The major source of the buildup material was definitely identified as being material eroded from the cement treated base in one instance, and the untreated aggregate base from the shoulder in another instance. To prevent or reduce faulting, more erosion resistance materials are needed at the surface of the base course and in the shoulders. In addition, consideration should be given to preventing the intrusion of water, or providing positive drainage. (Author)
California Pavement Faulting Study
Details of an investigation of faulted concrete pavements constructed on cement treated bases are presented. Various tests and measurements were made on the pavements and construction materials. At some sites, movement of water at the slab base interface was determined by the use of colored tracer sands placed under the slabs several weeks prior to slab removal or coring. Portions of pavement slabs were removed at fourteen sites in three different geographical regions--Valley, Coastal, and Mountain. Ten of the joints thus opened were faulted in amounts varying from 0.10-inch to 0.30-inch. At each faulted joint, a buildup of granular material was found under the approach slab, and in some instances, under the slab as well. The buildup differential was approximately equal to the amount of faulting measured. There was no evident settlement or faulting of the cement treated base course. The major source of the buildup material was definitely identified as being material eroded from the cement treated base in one instance, and the untreated aggregate base from the shoulder in another instance. To prevent or reduce faulting, more erosion resistance materials are needed at the surface of the base course and in the shoulders. In addition, consideration should be given to preventing the intrusion of water, or providing positive drainage. (Author)
California Pavement Faulting Study
D. L. Spellman (author) / J. R. Stoker (author) / B. F. Neal (author)
1970
74 pages
Report
No indication
English
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