Marshall Mix Design : A Hot Mix Asphalt

The unknown sample was then heated in boiling water in step 5. The reason for heating the

Our fourth criterion was complexity of the processes involved. In our analysis, the more complex processes often result in higher chances for imperfection or failure. We also felt that processes that require a trained specialist to enhance would not benefit from our analysis because of our lack of understanding the methods. The fifth criterion was personal interest. This was to ensure we were all engaged and interested in working on the decided project.

The materials that were used to carry out the experiments on the water samples were ten testing kits. We ran 10 tests on all

The organic solution was then transferred to a sample vial and labeled as reaction B. Another two mL of diethyl ether was placed with the NaHCO3 and then combined with the clear product and was sealed in the sample vial. This vial was also placed in the freezer until the product could be tested by gas

33 3.2.2 Sampling details .......................................................................................35 3.3 Data collection

The table below represents the average samples processed per hour and per step, based off the minimum, average, and maximum samples processed on exhibit 4. Separation numbers are half of the other process’s sample numbers because only 50% of samples go to separation.

In making our final decision, we have undertaken extensive qualitative and quantitative analysis. Such factors we have taken into consideration are the future trend of linerboard prices, the

This is the “what does it mean” step. LCIA utilizes LCI’s quantified findings to determine how various processes and products

1. A representative sample was chosen by quartering (according to BS 812: Part 102: 1984) or by use of a sample splitter (Fig. 2C1-3). The sample to be tested should be the approximate weight desired when dry. For this experiment, about 3 kilograms of coarse aggregate was weighed.

Recommend. This stage involves information gathering and data collection and identification of variances during execution and likely changes that might take place.

An added advantage to using porous asphalt is that it does not need proprietary ingredients. It also does not require the contractor to have special paving equipment or skills other than those needed to place normal asphalt. With the proper information, most asphalt plants can easily prepare the mix and general paving contractors can install it. State specifications should be checked to see if they abide by the key properties shown in Table 1.

Half of each tube’s contents are poured into a new test tube each respectively after the tubes are incubated for 1 hour. One set of tubes is tested for:

Sufficient references samples of the starting materials and products need to be retained for future examination of the batch if necessary.

SAMPLING: The first step is to take a test sample from the large batch of concrete. This should be done as soon as discharge of the concrete commences. The sample should be representative of the concrete supplied. The sample is taken in one of two ways:

1. Prepared 9 Vaseline Samples by stapling a white sheet of paper on cardboard and applying Vaseline on a pre measured circular area