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Showing 1 to 8 of 8 for “"cement-treated base"”.
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Contractor Variability in Construction of Cement Treated Base Layers
… correlated to specific mechanical properties of cement-treated base (CTB) layers and to determine which construction factors exhibit comparatively high variability within individual construction sections of the two pavement reconstruction projects included in this study. In addition, differences …
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Evaluation of lower quality recycled PCCP for Portland Cement Treated Base (PCTB)
… to incorporate these aggregates into Portland cement treated base (PCTB). KDOT currently practices a freeze-thaw method that includes 90 days of curing and a maximum of 660 freeze-thaw cycles to determine the durability of its concrete pavements and bases. An experimental study was conducted to …
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Cracking and Roughness of Asphalt Pavements Constructed Using Cement-Treated Base Materials
While cement treatment is a proven method for improving the strength and durability of soils and aggregates, cement hydration causes shrinkage strains in the cement-treated base (CTB) that can lead to reflection cracking in asphalt surfaces. Cracking may then cause increased pavement roughness and …
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Use of the Clegg Impact Soil Tester to Access Rutting Susceptiblity of Cement-Treated Base Material Under Early Trafficking
… to avoid the occurrence of early-age damage, cement-treated base (CTB) materials must be allowed to cure for a period of time before the pavement can be opened to traffic. Trafficking of a CTB before sufficient strength gain has occurred can lead to marring or rutting of the treated layer. The …
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Composite Pavements: A Technical and Economic Analysis During the Pavement Type Selection Process
… which are in essence a combination of a rigid base overlaid with a hot-mix asphalt (HMA) surface course, have the potential to meet the technical and economic requirements that are sought in the PTS process. For that reason, technical and economic evaluations were performed to justify the …
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Early Age Assessment of Cement Treated Materials
… to avoid the occurrence of early-age damage, cement-treated base (CTB) materials must be allowed to cure for a period of time before the pavement can be opened to traffic. The purpose of this research was to evaluate the utility of the soil stiffness gauge (SSG), heavy Clegg impact soil tester …
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Impact of pavements on the urban heat island
… Urban Heat Island (UHI) is caused by the replacement of natural materials with man-made ones such as concrete and asphalt, among other factors. UHIs can be studied at three elevations – surface, canopy layer and boundary layer – with Canopy Layer UHIs (CLUHIs) being the most significant as most …
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Sustainable pavement applications utilizing quarry by-products and recycled/nontraditional aggregate materials
… No. 200 sieve) in dense-graded aggregate subbase over soft subgrade soils; (3) using QB as a cement or fly ash-treated subbase (e.g., in inverted pavements); (4) using QB as a cement-treated base material; and (5) for base course applications, blending QB with coarse aggregate fractions of …