![]() HMA mix from Ohio met Hamburg testing requirement by exhibiting very little deformation of 4 mm after 20,000 repetitions whereas WMA mix exhibited 15 mm deformation after 20,000 repetitions. Both HMA and WMA mixes from Iowa met Hamburg testing requirement by exhibiting very little deformation of 3 mm and 5 mm, respectively, after 20,000 repetitions. Significantly less emission and smoke were observed during construction of WMA mixtures, which confirmed the environmental benefits of using WMA technologies while meeting both Iowa and Ohio DOT’s density requirements. The average densities of the HMA and WMA test sections in Iowa were 94.3% and 93.9%, respectively, and those of the HMA and WMA test sections in Ohio were 94.6% and 95.2%, respectively. In order to evaluate the performance of WMA mixtures in the field, test sections were constructed in Iowa and Ohio. Both HMA and WMA mixes with 75% RAP materials by binder replacement (90% by weight replacement) performed the best by exhibiting very little deformation ranging between 2 and 4 mm after 20,000 repetitions. Overall, HMA mixtures performed better than WMA mixtures and the mixes with higher RAP amounts performed better except the mix with 30% RAP materials by binder replacement. Hamburg Wheel Tracking (HWT) test was used to evaluate the rutting and moisture susceptibility of both HMA and WMA mixtures with varying RAP amounts. All mix designs met the Iowa DOT mix design requirements except the one with 75% RAP materials by binder replacement due to the excessive amount of dust content. The mix designs were then performed for both HMA and WMA with varying fractionated RAP amounts accounting for a replacement of 20, 30, 40, 50 and 75% of the mixture’s optimum asphalt binder content. This fractionation method was effective in improving volumetric properties of the HMA mixture with high RAP contents. Standard Method of Test for Specific Gravity of Semi-Solid Asphalt Materials This test method covers the determination of the relative density and density of semi-solid bituminous materials, asphalt cements, and soft tar pitches by use of a pycnometer. We ship our products worldwide.To increase RAP materials by up to 75% by binder replacement, a fractionation method was applied to the RAP stockpile by discarding RAP materials passing No. We’re here to help, and we’ll make sure you’re comfortable with your upcoming equipment purchase!īe sure to check out our shipping and returns page if you’re curious about the shipping costs on your product. We’ll let you know their exact dimensions in case you’ve only got so much room for a device. ![]() ![]() ![]() We’ll field any questions you may have about our products, their stats, or how they work. And if you’re curious about any of our products, don’t hesitate to give the pros here at Certified Material Testing Products a call. Don’t forget to browse through the rest of our asphalt testing products all here on our online store. Remember, we carry all sorts of material testing products here at CMTP. Don’t forget to purchase our solvents as well. Reflux extraction is also possible with our extractor sets - also varying in capacity. Furthermore, we carry vacuum extractors, as well as vacuum extractor components including hoses and seals. We also carry filter rings for extractors that require filters, and we’ve got a selection of extractor bowls. We carry centrifuge extractors with various features and capacities. Browse through the litany of products we carry, and find the right tools to get the job done! Here, we feature our catalogue of extraction tools that you’ll need for your asphalt. Here at Certified Material Testing Products, we provide state-of-the-art equipment that’ll aid you in testing your asphalt products. Asphalt quality control is crucial for attaining the proper asphalt structure.
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