TABLE OF CONTENTS. 



PAGE 



LlST OF TABLES XXV 



LlST OF ILLUSTRATIONS XXix 



INTRODUCTION. 



GROWTH OF THE CEMENTING INDUSTRIES . 1 



CLASSIFICATION AND RELATIONSHIPS OF CEMENTING MATERIALS 2 



Simple cementing materials 3 



Plasters 4 



Limes and magnesia 5 



Complex cementing materials 7 



Silicate cements 7 



Hydraulic limes 8 



Natural cements 8 



Portland cement 9 



Puzzolan cements 9 



Oxychloride cements 9 



CHEMICAL AND PHYSICAL DATA EMPLOYED IN DISCUSSION 10 



Atomic weights of elements 10 



Chemical compounds 12 



Heat-units 12 



Metric conversion tables 12 



PART I. PLASTERS. 

 CHAPTER I. 



COMPOSITION, DISTRIBUTION, AND EXCAVATION OF GYPSUM. 



Chemical composition of gypsum 14 



Varieties of gypsum 15 



Physical properties of gypsum 15 



Anhydrite 15 



Occurrence and origin of gypsum deposits 15 



Geologic distribution of gypsum deposits 16 



Distribution of gypsum in the United States 16 



V 



