<div class="description">
<dl><dd>At head of title: U.S. Department of Agriculture, Bureau of Chemistry</dd>
<dd>Includes bibliographical references</dd>
<dd>Introduction. pp. 5</dd>
<dd>Important physical and mechanical properties of road materials : Hardness -- Toughness -- Cementing or binding power. pp. 7</dd>
<dd>The causes of the deterioration of roads : Mechanical agencies -- Chemical agencies -- Physical agencies. pp. 10</dd>
<dd>Service tests. pp. 14</dd>
<dd>Historical review of road material tests : Tests of road materials in France -- Tests of road materials in Portugal -- History of paving brick tests. pp. 16</dd>
<dd>Methods and tests of the Road Material Laboratory : Tests for rock and gravel -- Tests for toughness -- Tests for paving brick -- Tests for cement -- Classification of materials. pp. 25</dd>
<dd>The application of laboratory results to practice. pp. 41</dd>
<dd>Appendix: Methods of analysis. pp. 47</dd>
<dd>Appendix: Table A. Results of laboratory tests. pp. 52</dd>
<dd>Appendix: Table B. Percentage of mineral constituents in road-making rocks. pp. 58</dd>
<dd>Appendix: Forms for reporting results of tests, etc. pp. 74</dd></dl><br>Subjects: Road materials Testing</div>
<div class="fn value">
<dl><dd>Page, Logan Waller</dd>
<dd>Cushman, Allerton S. (Allerton Seward), 1867-1930</dd>
<dd>United States. Bureau of Chemistry</dd>
<dd>United States. Department of Agriculture</dd></dl></div>
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