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Handbook of Shaft Alignment Part 4

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Tham khảo tài liệu 'handbook of shaft alignment part 4', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 120 Shaft Alignment Handbook Third Edition FIGURE 3.46 Protecting the baseplate and surrounding area with plastic covering. The four bottles of hardener arrived and the pour began in earnest at 1245 h. The procedure was to blend the liquids epoxy and hardener for 3 min and then slowly add each bag of aggregate to the mixture as shown in Figure 3.47. Once the fourth bag of aggregate was added another 2 min of mixing was suggested before the grout should be poured. An electric drill with a mixing blade was used to mix the contents. When the first batch was mixed together it became apparent that the mixture was very viscous almost like peanut butter . The drill motor quickly became overloaded and the windings began to overheat and smoke. Another drill motor was at hand so the drills were swapped out and by the second batch it too became overheated. A larger drill motor was quickly found to handle the mixing with one batch mixed at a time. After adding all the contents the barrel weighed around 250 lb a little too heavy for two people to lift and pour directly into the baseplate. Because of the viscosity of the grout the most effective way to pour was by hand scooping the grout out of the mixing barrel and then pouring it into a hole as shown in Figure 3.48. After the barrel got half empty it was light enough to be lifted by two people. We then would fill up a 5 gal bucket and use it to pour while another one or two people would continue to scoop it out with the smaller buckets which were made with thick plastic 1 gal laundry detergent containers . Thankfully two barrels were available where one crew would pour the grout whereas another crew would mix the next batch. Initially each batch took 15 min from the time the mix was started to the time the barrel was empty. After a quick calculation it was FIGURE 3.47 Mixing the grout contents. Foundations Baseplates Installation and Piping Strain 121 FIGURE 3.48 Pouring the grout. conveyed to the work crew that it would take