Chicago : Engineering and Contracting Pub. Co. · leaf 221
f thetin cups containing ice water maintained at 5°C, and left in this bath for at least 15 min-utes. Meanwhile the other cup is filled aboutthree-fourths full of water and placed on thetripod, and the water is heated to any desiredtemperature at which the test is to be made. This temperature… … Fig. 9—Melting Point Apparatus. for at least 15 minutes, the collar and contentsare removed from the plate and screwed intothe aluminum float, which is then immediatelyfloated in the warmed bath. As the plug ofbituminous material becomes warm and fluid,it is gradualb- forced upward and out of…
Buildings
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