Construction Technology

 Bulk Density and Voids of Fine Aggregate Types :- (1.) Loose Weight (2.) Rodded Weight  Loose Weight  Image Source:-ScienceDirect.com Apparatus Required - (1) Weighing Balance (2) Temping Rod (3) Straight Edge (4) Fine Aggregate  (5) Observation Sheet (6) Cylindrical metal measure of 3 litres, 15 litres or 30 litres according to the size of coarses particle of aggregate. Image Source:-civilsir.com Recent Post:- Proctor Test for Compaction of Soil  Test Procedure :- (1) For size of particle 4.75 mm and under, cylindrical metal measure of capacity 3 litres is used. (2) For size of particle 4.75 mm to 40 mm cylindrical metal measure of capacity 15 litres is used. (3) For size of particle 40 mm and above, cylindrical metal measure of size 30 litres is used. (4) To start the experiment take the metal measure of 3 litres capacity. (5) Take the empty weight of metal measure=2.686 Kg Also Read:- Bulking of fine aggregate (6) Fill the metal cylinder with loose aggregate...

 Proctor Test for Compaction of Soil Image Source: theconstrutor.org Compaction is a artificial process in which expulsion of air is done by means of mechanical means. The dry density is maximum at certain moisture content, that moisture content which is called optimum water content. A curve is drawn between the water content and the dry density to obtain the maximum dry density and optimum water content. Dry density of soil=Wet density/(1+W) Where, W=Water content Recent Post: Bulking of fine aggregate Image Source:Civilengineeringforum.me Apparatus Required:- (i) Take balance, weight=10 kg, where least count=1 gm (ii) Rammer, weight= 4.9 kg, where Fall=450 mm (iii) Proctor mould, Dia.=150 mm, Depth=127.3 mm (iv) 37.5 gm GI sieve is used. (Note-If soil is coarse, then 37.5 mm sieve is used and for other soil 19 mm sieve is used) (v) Total soil sample taken=30 kg (vi) We have taken 6 kg samples of soil in 5 nos. of tray. Also Read: Specific Gravity of Soil by Pycnometer Method...