Based on the parameters of the geopolymer mortar mix design, the optimum NaOH to fly ash ratio was 0.10 and Na2SiO3 to fly ash ratio was 0.10.
Finally, a mix design strategy ensuring optimum strength, durability and ecological profile is proposed.
The current Superpave mix design determines the optimum asphalt content that would produce asphalt specimens with total air voids of 4.0% without considering their sizes and distribution within the specimens.
Three hybrid HMA mixes incorporating substitutions of granite fillers/fines with 6%, 45% untreated, and 45% heat-treated concrete were evaluated by the Marshall mix design method; the optimum binder contents were found to be 5.3%, 6.5% and 7.0% of grade Pen 60/70 bitumen, respectively.
This paper discusses the beneficial use of tear-off shingles in Hot-Mix Asphalt (HMA) by presenting: (1) the physical properties of tear-off shingles and the extracted binder, (2) the mechanical behaviors and properties of shingle-mixed HMA, (3) an optimum mix design for the shingle used in HMAs.
The major finding from the study was that although the selection of the optimum mix design depended on the values of weights assigned to the corresponding criteria, for any configuration of the weights the optimum mixture always contained 20 rather than 30% of fly ash.
Normalized weighted sum method was employed as means of selection of optimum mix design.
This paper presents a modified mix design procedure, which utilises optimum water content and the efficiency factor of mineral admixture.
Utilizing the established high statistical confidence of the developed models, an experimental study was used to validate whether the theoretically proposed optimum mix design parameters, w/b, HRWRA%, and total binder could yield the desired responses.
In summary, a notable discovery is that the optimum mix design can be sustainably applied to stabilize the shallow clay without failure.
