xm. A, 1 Witt: Cement and Concrete 



Table IV. — 'Data on solutions employed. 



39 



Salt. 



Normal- 

 ity. 



Grams of 

 salt per 

 cubic 

 centi- 

 meter 



(by anal- 

 ysis). 



Centi- 

 meters of 

 solution 

 required 

 for nor- 

 mal con- 

 sistency." 



Parts by weight per 100 

 gTtaas of cement. 



Of salt. 



Of posi- 

 tive rad- 

 ical. 



Of nega- 

 tive rad- 

 ical. 





0.05 



0.0029 



22 



0. 0640 



0. 0252 



0. 0388 



Sodium chloride 



0.10 

 1 0.50 



0.0058 

 0.0291 



23 

 23 



0. 1339 

 0.6695 



0.0527 

 0.2634 



0.0812 

 0.4061 







' 1.00 



0. 0582 



22 



1.2810 



0.5040 



0. 7770 





0.05 



0.0034 



22 



0.0753 



0.0361 



0. 0392' 



Zinc chloride 



0.10 

 1 0.50 



0.0068 

 0.0342 



23 

 23 



0.1575 

 0.7874 



0.0756 

 0. 3779 



0.0819 

 0. 4055 







I 1.00 



0.0686 



22 



1.5065 



0. 7226 



0.7839 





1 0.05 



0.0034 



22 



0.0741 



0.0351 



0.0390 



Copper chloride 



0.10 

 0.50 



0.0067 

 0.0337 



23 

 23 



0.1549 

 0.7746 



0.0732 

 0.3663 



0.0817 

 0.4082 







1.00 



0.0674 



22 



1.4824 



0. 7011 



0.7818 





0.05 



0.0043 



22 



0.0937 



0.0253 



0.0684 



Sodium nitrate 



0.10 

 1 0.50 



0.0085 

 0.0426 



23 

 23 



0. 1959 

 0.9795 



0.0530 

 0.2660 



0.1419 

 0.7145 







I 1.00 



0.0852 



22 



L8739 



0.5069 



1.3670 





0.05 



0.0051 



22 



0. 1116 



0.0432 



0.0684 



Potassium nitrate 



0.10 

 1 0.60 



0.0102 

 0.0508 



23 

 23 



0.2334 

 1. 1670 



0.0904 

 0.4520 



0.1430 

 0.7150 







' 1.00 



0. 1015 



22 



2.2332 



0.8646 



1.3686 





0.05 



0.0040 



22 



0.0883 



0.0199 



0.0684 



Ammonium nitrate 



0.10 

 0.50 



0.0080 

 0.0401 



23 

 23 



0.1846 

 0.9230 



0.0416 

 0.2079 



0.1430 

 0. 7151 







I 1.00 



0.0803 



22 



1.7659 



0.3978 



1.3681 





0.05 



0.0036 



22 



0.0785 



0.0254 



0.0531 



Sodium sulphate 



0.10 

 j 0.50 



0.0071 

 0.0357 



23 

 23 



0.1643 

 0.8215 



0.0532 

 0.2661 



0.1111 

 0.5554 







I 1.00 



0.0714 



22 



1.5719 



0.5091 



1.0628 





0.05 



0.0040 



22 



0.0886 



0.0359 



0.0527 



Zinc sulphate _ 



1 0.10 

 0.60 



0.0081 

 0.0403 



23 

 23 



0.1862 

 0.9260 



0.0751 

 0.3753 



0. 1101 

 0.5507 







1.00 



o.osoie 



23 



1.7721 



0.7181 



1.0540 





( 0.05 



0.0040 



22 



0.0881 



0.0361 



0.0530 



Copper sulphate 



I 0.10 

 1 0.50 



0.0080 

 0.0401 



23 

 23 



0.1843 

 0.9215 



0.0734 

 0.3672 



0. 1109 

 0.5543 







I 1.00 



0.0801 



22 



1.7628 



0. 7025 



1.0603 





0.05 



0.0020 



22 



0.0447 



0.0125 



0. 0316 



Sodiumb bicarbonate 



0.10 

 0.60 



0.0041 

 0.0203 



23 

 22 



0.0935 

 0.4472 



0.0262 

 0.1259 



0. 0661 

 0.3163 





1.00 



0.0407 



22 



0.8947 



0.2509 



0.6327 





0.05 



0.0024 



22 



0.0538 



0.0185 



0. 0318 



Potassium *■ bicarbonate __ 



0.10 

 1 0.50 



0.0049 

 0.0245 



23 

 23 



0.1126 

 0.6629 



0.0449 

 0.2246 



0. 0663 

 0.3319 



1 



I 1.00 



0.0489 



22 



1.0769 



0.3706 



0. 6365 



■ The normal consistency values given in this column are averages for the four cements. 

 In nearly every case the variation was only 1 or 2 per cent. In gauging cement IV with 0.50 N 

 copper sulphate and with 0.50 N potassium bicarbonate, however, the normal consistency was 

 unusually high, being 26 and 28 per cent, respectively. These two values were not counted in 

 the averages given here. 



* The concentrations of these solutions are based on the amount of CO3 present. They are 

 only half the indicated concentrations with respect to alkalinity. 



