by AASHTO and AHTD. The topics covered in the lab report are selection of materials‚ selection of mix design‚ and final recommendation. Even though other properties of the mixture just meet the Superpave design requirements‚ no job mix formula is drawn from this mix design because the dust proportion of the mixture is far out of the requirements. We may need to change the blend gradation of aggregate. The blend in this mix design produced a gradation‚ as shown in Figure 1‚ that was close
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Pour the mixture into the lined baking tin and carefully level off with a ruler or spatular‚ the ideal thickness of the cake is around 1-1.5 cm. 5. Place in a pre heated oven (180 C) and bake for around an hour until the mixture is cooked right through. 6. Allow the cake to cool‚ remove from the tin and carefully peel off the foil. 7. Chop up the cake into cubes of
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Mixture separation Lab I am one of the chemists assigned to design a cost effective procedure for handling the CARBOSE separation and recovery and hazardous waste disposal. The difficulties were trying to figure out is how we can effectively separate Carbose‚ sand‚ and naphthalene? The hypothesis we chose to solve this problem was if we put the mixture into water‚ alcohol‚ and mineral spirts‚ then in each solution one or more substance will not dissolve‚ will be visible‚ and also able to separate
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with a match and allow to burn. 3. Add a microspatula of NaCl (sodium chloride) to a small quantity of water (about 5mL) in a test tube. Shake the contents of the tube. Next‚ use a dropper to add 10 drops of 0.1 silver nitrate to the NaCl-water mixture. 4. Obtain a piece of magnesium ribbon about 5 cm long. Tear the ribbon into 1-cm pieces. Place two of the pieces into a test tube and a few drops of 6 M HCl (hydrochloric acid). Caution: Use extreme care in handling this acid. It will cause
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making sure we did not have to start over. While this lab is a good starting point for reflecting the scientific process‚ I think we should have focused more on how each material influences the crayon. It seemed like we ended up making somewhat random mixtures and picking which crayon we thought was best without
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fixed proportions is called a MIXTURE. In a MIXTURE‚ the substances that composes it still retains its own chemical properties. A HOMOGENOUS MIXTURE is one that is contains substances that are not easy to separate such as AIR (AKA SOLUTION). A HETEROGENOUS MIXTURE is one that super easy to separate such as sand‚ rocks‚ and wood. -Filtration can take apart a mixture of a solid and a liquid. -Magnets take away metallic items. -Distillation separates a homogenous mixture. Salt water. -Chromatography
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environmental factors like wind and heat -some products are mixtures‚ used for medicinal purposes‚ & require a different understanding of body chemistry & chemical interaction -production of these substances on a commercial scale resulted from developments in chemical technology and an understanding of the different properties of chemicals and of chemical interactions -these products include a range of different types of substances‚ mixtures & polymer molecules. -many products are applied
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Uses : producers have supplied this specialty performance ..: 1- hospitals in x-ray protection 2- bridge designers to provide counterweights on lift bridges 3- designers of nuclear power plants Mixture proportioning: Procedures outlined in ACI 211.1 should be used for mixture proportioning. Typical proportions for heavyweight concrete are shown in Table 2. MATERIALS : Cement Cements conforming to ASTM C 150‚ which would be suitable for conventional concrete and produce the required
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believe that the ink is actually a mixture? Answer: It’s a mixture because you have to originally mix things to get the ink color. Take green ink for example. You might have to take yellow and blue to make that green. Plus the pigments that were shown on the paper. (5 points) 6. You are given an unknown type of clothing dye. How could you use the procedures in this lab to see if this dye is a mixture? Answer: In order to find out if the clothing dye is a mixture‚ you would rub a small amount of
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SHRP-A-357 Development and Validation of Performance Prediction Models and Specifications for Asphalt Binders and Paving Mixes Dr. Robert L. Lytton Dr. Jacob Uzan Dr. Emmanuel G. Femando Texas Transportation Institute Texas A&M University College Station‚ Texas Dr. Reynaldo Roque Dr. Dennis Hiltunen Dr. Shelley M. Stoffels Pennsylvania Transportation Institute Pennsylvania State University University Park‚ Pennsylvania .r_rrD Strategic Highway Research Program National Research Council
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