A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Experimental Concrete Pavement Containing Fly-Ash Admixtures. Poplar Level Road, Jefferson County
The report summarizes the record of the construction and performance of portland cement concrete pavements containing fly-ash as an admixture. Preliminary laboratory studies indicate that partial replacement of cement with fly-ash gave lower early strength, but the 28-day strength equaled or exceeded the normal concrete strength. Freezing and thawing tests showed that non-air-entrained fly-ash concrete showed poorer durability than similar normal concrete when the freezing started at 14 days. The experimental pavement consisted of a control section containing six bags of portland cement per cubic yard, one experimental section containing five bags of cement and 94 pounds of fly-ash per cubic yard, and another experimental section containing five bags of cement and 140 pounds of fly-ash. Performance surveys of the pavement were made at regular intervals. The survey noted the location and amount of cracks and spalls and popouts. Specimens cast from the concrete placed in all sections exceeded the required strengths by a substantial amount. The present condition of all sections of the pavement is essentially the same. To date, no adverse effects or superlative properties attributable to the fly-ash are in evidence from this project. (BPR abstract)
Experimental Concrete Pavement Containing Fly-Ash Admixtures. Poplar Level Road, Jefferson County
The report summarizes the record of the construction and performance of portland cement concrete pavements containing fly-ash as an admixture. Preliminary laboratory studies indicate that partial replacement of cement with fly-ash gave lower early strength, but the 28-day strength equaled or exceeded the normal concrete strength. Freezing and thawing tests showed that non-air-entrained fly-ash concrete showed poorer durability than similar normal concrete when the freezing started at 14 days. The experimental pavement consisted of a control section containing six bags of portland cement per cubic yard, one experimental section containing five bags of cement and 94 pounds of fly-ash per cubic yard, and another experimental section containing five bags of cement and 140 pounds of fly-ash. Performance surveys of the pavement were made at regular intervals. The survey noted the location and amount of cracks and spalls and popouts. Specimens cast from the concrete placed in all sections exceeded the required strengths by a substantial amount. The present condition of all sections of the pavement is essentially the same. To date, no adverse effects or superlative properties attributable to the fly-ash are in evidence from this project. (BPR abstract)
Experimental Concrete Pavement Containing Fly-Ash Admixtures. Poplar Level Road, Jefferson County
R. D. Hughes (author)
1966
71 pages
Report
No indication
English
Admixtures for pavement-quality concrete
British Library Online Contents | 1996
Admixtures for pavement-quality concrete
Online Contents | 1996
Poplar Forest and Thomas Jefferson
| Online Contents | 1995