SURFACE MOISTURE CONTENT: FINE AGGREGATE
Relevant IS Code – IS: 2386 (Pt. III) –
1963
Field Method:
1. Take a sample of about 3.5 kg and weigh
it accurately. Let this be W1
2. Keep the same to dry in sun on a plate
for about 2 to 3 hours or dry on a stove.
Remember it has to be only SSD (surface
saturated dry). If it is done in oven it will become bone dry.
3. The dry sample is weighed accurately and
let this be W2.
4. The difference between W1 & W2 i.e.
W1 – W2 = W will be the weight of moisture.
5. $$\begin{aligned}{W1 \over W2} X 100 \end{aligned}$$ will be the surface moisture content.
IS code Method:
Object: This method of test covers the procedure for determining, in the
field, the amount of surface moisture in fine aggregates by displacement in
water. The accuracy of the method depends upon accurate information on the
specific gravity of the material in a saturated surface dry condition. The same
procedure, with appropriate changes in the size of sample and dimensions of the
container may be applied to coarse aggregates.
Determination by Weight – The container shall be filled up to
predetermined mark with water and the weight in grams determined. The container
shall be emptied. Enough water shall be placed in the container to cover the
sample, after which the sample of fine aggregate shall be introduced into the
container and the entrained air removed. The container shall then be filled to the
original mark and the weight in grams determined. The amount of water displaced
by the sample shall be calculated as follows:
Vs = Me + Ms – M
Where
Vs = weight in grams of water displaced by the sample,
Mc = weight in grams of container filled up to the mark with water,
Ms = weight in grams of the sample,
M = weight in grams of the sample and container filled to the mark with
water
Some cell on line casino sites have an intensive selection, while others offer a restricted number of titles. The 바카라사이트 tablet kiosk can turn into a multi-platform resolution for gaming, betting and paying with integrated units. The customer can scan their ID upon entry to the casino or betting shop, or have their photograph taken for access. Integrated money acceptors can allow for the shopper to simply place bets on the interactive tablet enclosure, before passing the time previous to the race by half in} one of the many alternative video games available on the tablet.
ReplyDelete