f'lirnt, cooled clown and then emptied ai 

 always used as fuel, although it is now 

 probal^ly only a question of time when cc 



An analysis of the stone made by the 

 from the quarry, gives : — 



Silica etc 



Iron, Alumina, etc. ... 



The c 



arhonic acid ^ 



vas estii 



iiated several i 



:imes separately. 



Thel 



iuie is fairly ^ 



.vhite in 



colour after I 



)eing burnt, 



although 



notliing 



like so white 





lime burnt at 



Lake Hath 



ur.st. Its 



sppcitic 



gra\ity when 



imrnt i; 



i about 3-25. 



Its tensile 



. strength 





rtar per si^uare inch v 



-as estinnited by making ^ 



.J, various 



proporti 



on. of quick 



lime and sand by me. 



isure. The 



sand was 



all clea 



n ^^aslK.d, ca 



u'dit on 



a 900 sipv(>,, 



and having 



a specific 





of-J-.VJ. The 



•mould. 





.fter Faija's 



])attern,* 



andlix 





re broke 



n'in'eacrcase 



. Thus one 



' part lime 



and fou 



r parts sand, 



broke a 



t 2.<.Ut.s. ; one 



> part lime 



and eight 



parts sa 





l.Ubs. ■ 



With less than 



one and four no better 





■MS Ohtahii'd." 



The blocks were all tested ab( 



)ut twelve 



months 



after hein-^ 



made;. 



A test with t 



wo i)arts lin 



ic and one 



part pla 



st.r of paris, 



the bri 



(luettes a vera; 



ged U-ilb.s.; 





plaster 





rr at 3:^:^ 



'lbs. All the 



l>riquettes y 



.-fre tested 





chhlo of Dr."Michaeli: 



^ pattern, the 



, lighter wei 



ghts being 



a^cenainedhy using 



only one lever havin<. 



J a multiply 



Ing power 



Vicat 



: classes lime i 



iiortar f ] 



lom bad to good as taking 1 



iO to 50tr3S. 



per squ: 



ire inch, so tli 



,at this 



lime cannot t 



ake a very 



fo^j^: 



^ ^ ^ ; classed as a 



poor lime having very slight hydraulic properties. When once i1 

 has become hard in the air, it resists water fairly well, but foi 

 anything like hydraulic work it is utterly unsuitable W ith 2 

 fairly coarse sand, such as would be caught on a !)00 sieve, .i 

 stronger mortar is obtained than with a finer sand, this bem^ 

 pro},ably due to the air being able to circulate through the mortal 

 i;K)re freely, on the other hand a better result is obtained with souk 

 njie sands than with others, this being probably due to a ditierenc* 

 in composition. 



* Portland Cement for Users, by H. Faija, p. 03. 



