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REPORT DATEWISEDay 1

24th May

We have gone to batching plant and see all the mixer and lab (where test is conducted) RO plant (to

purify water as there is some specification about the water mixing with concrete). Lab has

1. Impact test2. Compressive test of grouting and concrete3. Sieve analysis4. Flakiness and elongation test5. Moisture content6. Cement test7. Specific density test8. Slump cone9. Water test mainly sulphate and chloride

Day 2

25th

may

As we did not have time to conduct the above listed test on that day so we again came to conduct the

test on stone aggregate, cement, concrete and knowing some more about batching plant i.e. its

manufacture name and its ideal capacity and its practical capacity and its working. Some more about

RO plant that from where is the source of water? And how its get purified and made it usable. RO plant

has one big tank where water store i.e. directly comes from ground and left in the tank so that the big

sediments in the sand settle. That water is then pumped to two big black tank so that some fine

sediments also settle now it is passed to sand filtration so that water get infiltrate and now passed tothree membrane so to remove some of chemicals and in last water is passed through RO membrane to

remove the soluble impurity from water and, then water is pumped to tank coved from top (so that

impurity will not come in that tank.

Now, we move to batching plant mixer where we have seen that there are two types of coarse

aggregates are present 10 mm and 20 mm. Aggregates (coarse and fine) are carried to machine box with

the help of hopper and conveyer belt. There is mechanism fitted that inside that machine box a

automatic measurement box (which take that much quantity that are fed in that software) and that box

take all the aggregates and transport to the mixer takes 20 sec to perform this task & cement comes

from silo (cement in silo is transport from store room through pump) (There are 3 silo containing

FLYASH, OPC (53), SLAG cement) (these cement are used for their requirements at the site) (fly ash isused to reduce the cost of construction) and required quantity are poured in that mixer and required

water (which comes from that RO plant and in the last we use admixtures to maintain workability of

cement, this admixture comes from the back of machine box and its dose generally .5 to 2 % of cement

weight. Here they are using two types of admixture 1. Naphtha base 2. Poly carboxylic base

Both has its own importance naphtha base are used in hot season as it controls over the evaporation

rate of water in the concrete and of low cost, poly carboxylic base are used in winter season but it

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