vv 



w 



HYD RATED LIME: ITS PREPARATION AND PROPERTIES. 129 



composed of two parts by weight of sand to one part of slaked lime, 

 and the results are given in pounds per square inch. 



Mixture of hydrated lime and Portland cement. Among the most 

 interesting features of this new product are the results obtained by 

 mixing slaked lime with Portland cement. This mixture has been 

 tested by several experimenters, and the results of the tests are quoted 

 and discussed both by Sabin and Thompson in their recent books on 

 cements and concretes. The addition of hydrated lime to a Portland 

 cement mortar renders it more plastic and easier to work. When this 

 addition does not exceed 10 or 20 per cent an actual increase in tensile 

 strength seems to be shown. 



List of references on hydrated lime. 



Brigham, S. T. The manufacture and properties of hydrate of lime. En- 

 gineering News, vol. 50, pp. 177-179. Aug. 27, 1903. 



Brigham, S. T. Hydrated lime. Engineering News, vol. 51, pp. 543. June 

 9, 1904. 



Peppel, S. V. Lime experiments. Rock Products, vol. 3, p. 1, p. 17. April 

 May, 1904. 



Warner, C. Hydrated lime. Engineering News, vol. 50, pp. 320-321. Oct. 8, 



1903. 



arner, C. Strength tests of mixtures of hydrated lime and Portland cement. 

 Engineering News, vol. 50, p. 544. Dec. 17, 1903. 



Warner, C. Standards adopted by manufacturers of hydrated lime. En- 

 gineering News, vol. 52, p. 220. Sept. 8, 1904. 



