218 



THE FARMERS HANDBOOK. 



A Cheaper Concrete for Cow-bail or Pig-sty Floors. 



Spread and ram down to the required levels the dry stone or other 

 aggregate to be used, which need not in this case be broken to any 

 particular gauge. Mix a batch of stone lime mortar, using three parts 

 sand to one of unslaked lime. This may be made up by opening out the 

 centre of the heap of sand and placing the unslaked fresh lime in the 



\ 



Oz~ 



'h 



CU 



bicf) 1 



ifrf 



tn 



e a$i 



ire 



Fig. 23. 



centre; then sprinkle enough water on to reduce the lime to a powder, 

 add enough water to make it like milk, and gradually mix in the sand; 

 knock the lot into a heap, cover with a little dry sand, and let it stand 

 for a week. Mix up this into a grout or liquid mortar, and pour it over 

 the dry stones until all the spaces are filled in, and next day render or 

 plaster the top off with a coat of cement mortar £ inch thick, ruled straight 

 and trowelled hard. 



Rendering. 



This is the term given to the finished coat applied to walls or floors, 

 and is usually done with cement mortar made of two parts clean sand 

 to one part Portland cement, worked together through a fine sieve before 

 being wetted for use. Care should be taken not to wet up any more than 

 can be used within a half hour, as some cements set quickly (an indication 

 they are not the best). 



