Chicago : Engineering and Contracting Pub. Co. · leaf 223
Fig. 11—New York Testing 20S ENGINEERING & CONTRACTING Vol. XXXVI. No. 8. USE OF PENETRATION TEST. This test is made on all semi-solid and solidoil-asphalts, asphaltic cements, and nativeasphalts, but seldom on tar products. It is al-so often made on the residues of materialssubjected to the… … Fig. 13—Distillation Apparatus. are sufficiently hard. For work on residues,which seldom amount to more than 20 cu.cms., the type of container shown in Fig. 8will be found convenient in order to obtainthe necessary depth of material. This contain-er is made to hold five samples. It consistsof a…
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