Wind Power (Step By Step Procedure):- A Case Study

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      WIND DATA (STEP BY STEP PROCEDURE):- Image Source-Ritesh Raj Stone Column Image Source-Ritesh Raj Plum Concrete (Where required) PCC (M-15 Grade) Bottom Flange Erection (With level as per drawing) Reinforcement (12 mm to 32 mm as per drawing) RCC (M-45 Grade and M-60 Grade) In the M-60 Grade-GGBS also used (JSW Brand) Image Source-Ritesh Raj Used Curing Compound (Concure AB Clear) Top Flange Erection Bitumen Paint applied on all pedestal area Backfilling with layer wise compaction Grouting in top flange (With M-90 Grade BB-90, Brand-Fosroc) Total Flange Nos.=02  Total Bolts=80*2=160 Nos. Image Source-Ritesh Raj Used Admixture- (1.) ACC HP 6517 (2.) ACC HVF 7905(Corrosion) Image Source-Ritesh Raj 10 mm and 20 mm aggregate sources:- Anjar, Nakatrana Water Source-Khavda Sand Source-Mudhan, Kunariya, Ratariya GSB Sourvce-Raytariya, Anjar Required TDS of Water=Below 2000 Required PH of water=6.5 to 8.5 GGBS=Ground Granulated Blast Furnace Slag IDT=Inverter Duty Tran...
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Aggregate Impact Value Test

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Image Source:Indiamart.com

Aggregate Impact Value is an important test of aggregate. Before starting any mix design and making concrete, we will done aggregate impact value test. From this test we know about the toughness of an aggregate. After apply sudden impact on aggregate, then we got the impact value of an aggregate.

Important Terms:-

(i) Weight of Impact value testing machine=45 to 60 kg.

(ii) Cylindrical Steel cup, Dia.=75 mm, Depth=50 mm

(iii) Testing cup, Dia.=102mm, Depth=50 mm

(iv) Fall(means height)=380+-5mm

(v) Used 12.5 mm and 10 mm-GI Sieves and another 2.36 mm-Brass Sieves


Image Source:Indiamart.com

Recent Post: Elongation Test of an Aggregate

Test Procedures:-

(i) Taken some sample of aggregate and used 12.5 mm sieve for passing and 10 mm for retaining.(Note-Sieving will always in circular motion.)

(ii) Firstly passing materials of aggregate from 12.5 mm IS sieve and then 10 mm IS Sieve is used. The material which will retained on 10 mm sieve will kept in another pan.

(iii) Retained weight of material will kept in oven at 1100C (1000C to 1100C) for 4 hours.

(iv) After 4 hours sample is removed from oven and make cold in atmosphere.

(v) Now, the steel cup is kept on weight balance and it will tier.


Image Source:Indiamart.com

Also Read: Important terms on the basis of IS Codes

(vi) Steel cylinder is filled through aggregate, which was taken from oven. It will filled in 3 layers and each layer temped at 25 times.

(vii) Now, weight of cylinder=357.7 gm. and it will transferred in testing cup and also it will temped in a single layer at 25 times.

(viii) Tighting the both ends of testing cup and will applying 15 blows and also consider it will applying continuous and after 15 blows it will lock at upper portion.

(ix) Loose the screw and taken sample.

(x) Now sieve the taken sample through 2.36 mm brass sieve and at bottom of 2.36 mm sieve we will apply a pan/lid and then start sieving in a circular motion.

(xi) Now, a pan is kept at weight balance and tier it. The passing material weight will taken. Weight comes=25.3 gm


Image Source:Civilblog.org

Also Read: Flakiness Test of an Aggregate

Format (Sample):-

A=Weight of oven dried sample 

   =357.7 gm

B=Weight of fraction passing

   =25.3 gm (2.36 mm sieve)

Aggregate Impact Value=B/A * 100

                                       =25.3/357.7 *100

                                       =7.07 %  

   

Image Source:Indiamart.com

   Also Read: Civil Engineering Related Important Questions with Answers

Note:-

As per 383:2016, Page No.-4, as an alternative to 5.4.1, the aggregate impact value may be determined in accordance with the method specified in accordance with the method specified in IS 2386(Part-4).The aggregate impact value shall not exceed the following values:-

(a.) For aggregates, to be used in concrete for wearing surfaces, (Such as runways, roads, pavements, tunnel lining carrying water, spillways and stilling basins)=30 %

(b.) For aggregates to be used in concrete other than for wearing surfaces=45 %.

Image Source:Constructiontechnology.in



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Written By-
Ritesh Raj

Email Id-rajritesh.motiharirr@gmail.com



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