Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 11 of 11 for “"Aggregate Gradations"”.
-
Evaluation of ultrasound method for determining aggregate gradations in asphaltic concrete mixes
… a geotechnical method, ultrasound, to detect aggregate gradation differences in asphaltic concrete pavements. Empirical data had previously been used to suggest that the more coarse the gradation, the less incidence's of rutting. It is my thesis that the more coarse the gradation, the higher …
-
Evaluation of rutting resistance of coarse graded aggregate asphaltic concrete mixes in Clark County, Nevada
… evaluate the effectiveness of utilizing coarse aggregates in asphaltic concrete pavements for reducing rutting in Clark County, Nevada. Previous specifications used for asphaltic concrete mix designs in the Clark County area allowed for a wide range of aggregate gradations. The aggregate …
-
Selecting material constituents and proportions for specific roller-compacted concrete mechanical properties
… must be minimized. A wide range of RCC aggregate gradations were batched, tested, and found to impact RCC properties especially compressive strength. The coarse-fine aggregate ratio was the parameter linked most directly to RCC compressive strength. Aggregate type (recycled aggregates, …
-
Aggregate gradation impacts on fresh properties of 3D concrete printing mixtures
… no comprehensive framework exists to optimize aggregate gradation and paste volume, thereby reducing cement content, to meet targeted fresh property requirements for printability. This research study employed an experimental central composite design to quantify the effects of sand fineness and …
-
Balanced Mix Design of Asphalt Mixtures for Intersections
… asphalt mixtures with the modified aggregate gradation were used by the Regional Transportation Commission (RTC) of Washoe County in the construction of several roadway intersections in the Washoe Valley area. The asphalt mixtures used in the construction of the intersections …
-
Asphalt Mixture Design Concepts to Develop Aggregate Interlock
… it was desired to understand the interaction of aggregates, asphalt, and the voids created during their compaction. In asphalt mixture design, guidance is lacking in the selection of the design aggregate structure and understanding the interaction of that aggregate structure and mixture …
-
Discrete element modeling of railroad ballast using imaging based aggregate morphology characterization
… and load distribution. In general, ballast aggregates are considered as uniformly graded, angular shaped with crushed faces. However, various ballast aggregate gradations and particle shapes are in use yet their effects on ballast performances remain unknown. In previous designs and modeling …
-
Performance-based evaluation of unbound aggregates affecting mechanistic response and performance of flexible pavements
Unbound aggregates are widely used in road construction to replace unsuitable soil, prepare pavement working platform or construct pavement foundation layers. Their primary function in flexible pavements is to distribute wheel loads and provide adequate protection of the subgrade. However, the …
-
Improving the performance of cold bituminous emulsion mixtures (CBEMs) : incorporating waste
… volumetric and mechanical properties. The main aggregate materials used in this investigation were carboniferous limestone and quartzitic asphalt sand. But in response to environmental conservation campaigns, a range of selected waste materials were also tested as partial and full replacement to …
-
EFFECT OF CRACK-REDUCING TECHNOLOGIES AND SUPPLEMENTARY CEMENTITIOUS MATERIALS ON SETTLEMENT CRACKING OF PLASTIC CONCRETE AND DURABILITY PERFORMANCE OF HARDENED CONCRETE
… admixture (SRA), optimized and non-optimized aggregate gradations, or the supplementary cementitious materials (SCMs) slag cement and silica fume. Some concrete mixtures contained combinations of these technologies, such as supplementary cementitious materials and internal curing. Both crack …
-
Analysis of Fine Asphalt Concrete Mixture Gradations from Various Sources to Enhance Durability
… This thesis will look into the effect of fine aggregate dense gradations on asphalt mixture durability for sources from the state of Nevada. Based on the available literature, finer gradation asphalt mixes have lower air void content and therefore higher moisture damage resistance. This is …