TABLE OF CONTENTS. 



PART I THE MATERIALS AND MANUFACTURE OF PORTLAND 

 CEMENT, by Edwin C. Eckel. 



CHAPTER I. 



PAGE. 



Relation of Portland to other Cements 1 



Group T Simple Cements 2 



( a) Hydrate Cements 8 



(b) Carbonate Cements 4 



High Calcium Limes 5 



Magnesian Limes 6 



Group II Complex Cements 6 



f 1. Pozzuolanic Cements . 7 



Classes of Silicate Cements. . J 2 - Hydraulic Limes 7 



\ 3. Natural Cements 8 



14. Portland Cements 9 



Natural Cements 8 



Portland Cements 10 



Puzzolan Cements . . 10 



CHAPTER II. 



Portland Cement: Definition: Composition and Constituents.... 11 



CHAPTER III. 



Raw Materials: General Considerations 15 



Origin and General Characters of Limestone 16 



Origin of Limestone 16 



Varieties of Limestone 17 



Chemical Composition of Limestone 18 



Physical Characters of Limestones 21 



Effect of heating on Limestone 21 



CHAPTER n. 



Raw Materials in Detail '. . . 22 



Argillaceous Limestone: Cement Rock 22 



Cement Rock of the Lehigh District 22 



Cement Rock in other parts of the United States 24 



Pure hard Limestone 25 



