Fine Sand /classification of sand

 

Fine Sand

Fine sand should consist of natural sand or crushed stone sand. It should be hard, durable, clean and be free from organic matter etc.Fine Sand should not contain any appreciable amount of clay balls and harmful impurities such as alkalis, salts, coal, decayed vegetation etc. The silt contents should not exceed 4%.

Classification of Sand 

Classification of sand is given below.   
1. Fine sand = 0.075 to O.425 MM
2. Medium sand = 0.425 to 2 MM
3. Coarse Sand = 2.0 to 4.75 MM

Various Types of Sand
There are following three types of sand.
1. Pit Sand
2. River Sand
3. Sea Sand
 
Pit Sand (Coarse Sand or Badarpur)  
Pit sand is obtained by forming pits into soil from ‘Quarries’. It consists of sharp angular grains which are free from salts. It is coarse sand which is usually used in concreting and has reddish yellow color normally.
 
River Sand
This sand is obtained from banks or beds of rivers. River sand is fine and consists of fine rounded grains. The color of river sand is almost white and Grayish. River sand is usually available in clean condition and is used for plastering. 
 
Sea Sand
This sand is obtained from sea shores. It has fine rounded grains and light brown color. Sea sand contains salts which attract moisture from atmosphere. Such absorption causes dampness and disintegration of work. Sea sand also retards setting action of cement. Due to these reasons, sea sand is generally avoided for engineering purposes. It is used only as a local material for nonstructural purposes.


Sand for Construction Works
Different construction works require different standards of sand for construction.
 
• Brick Works: finest modulus of fine sand should be 1.2 to 1.5 and silt contents should not be more than 4%.

• Plastering Works: finest modulus of fine sand should not be less than 1.5 and silt contents should not be more than 4%.

• Concreting Works: coarse sand should be used with finest modulus 2.5 to 3.5 and silt contents should not be more than 4%.


NOTE

  •  If the above quality of sand is not available due to any reason, the blending of sand should be done by adding more coarse sand to achieve the required finest modulus.
  •  Washed sand should be used at site for getting more strength in construction work. 

Bulking of Sand
Due to moisture in each particle of sand, sand gets a coating of water due to surface tension which keeps the particles apart. This causes an increment in volume of sand known as Bulking. 

 

The 'Bulking' is shown in the following table

Moisture content (% by Weight)

Bulking (% by volume)

          2         15 %
          3         20 %
          4         25 %
          5         30 %

 

Checking the Quality of Sand
The following methods are used to check the quality of sand. 

  •  To check the quality of fine aggregates or sand; put some quantity of sand in a glass of water. Then it is vigorously shaken and allowed to settle. If the clay is present in sand, its distinct layer is formed at the top of sand.
  • To detect the presence of organic impurities in sand, a solution of sodium hydroxide or caustic soda is added to sand and stirred. If the color of solution changes into brown, it shows presence of impurities
 
33  Comment(s)
Dayanand
By Dayanand -  On  9/28/2014 2:47:11 PM
Informative
 
Dayanand
By Dayanand -  On  9/28/2014 2:45:10 PM
Informative
 
Anonymous
By Anonymous - On 7/9/2014 12:27:19 PM
its realy help me in daily routine
 
Anonymous
By Anonymous - On 4/8/2013 3:24:07 PM
We are appreciating you people that you did this kind of service for human. thanks Afghanistan
 
Anonymous
By Anonymous - On 3/4/2013 7:11:41 PM
is quartz sand can be replaced with river sand?kindly reply
 
Anonymous
By Anonymous - On 2/25/2013 7:13:47 PM
m agree with u ,thanks 4 it
 
Anonymous
By Anonymous - On 10/20/2012 3:31:01 PM
i want to know the full detail of river sand and sea sand comperision ,diffrence and all
 
Anonymous
By Anonymous - On 3/21/2012 10:10:14 AM
yes it is very helpful tips for civil engineers
 
Anonymous
By Anonymous - On 1/1/2012 11:11:19 PM
i am interested to know the differance in red river sand and of the sand of Ganges.i want to use the sand for plastering.
 
Anonymous
By Anonymous - On 11/25/2011 5:21:11 PM
i got very valuable information from this site....
one more information i needed is that ....what is the durability of sea sand replacement as a fine aggregate in concrete....?
 
Anonymous
By Anonymous - On 7/31/2011 5:33:53 PM
all building materials new&price list
 
selvarajum
By selvarajum -  On  6/18/2011 11:35:15 AM
fantastic. i got perfect platform to know more details about construction.can you give material rates for a particular area or otherwise where i can get material rates on weekly basis.
 
Anonymous
By Anonymous - On 1/18/2011 9:39:59 AM
Its too good
 
dencil
By dencil -  On  11/7/2010 3:52:34 PM
very valuable information indeed. I have a query here, is m-sand good for plastering purposes?
 
Ajith
By Ajith -  On  10/31/2010 12:22:24 AM
In the middle east where river sand is not available,they are only depending sea sand which is working very well. so what precaution to be taken while using sea sand.
 
Anonymous
By Anonymous - On 10/28/2010 1:39:22 AM
The information was simple, easy to understand, a good starting point.
 
L Patnaik
By L Patnaik -  On  9/10/2010 5:42:08 PM
most useful data for a technical person
 
L Patnaik
By L Patnaik -  On  9/10/2010 5:41:49 PM
most useful data for a technical person
 
Anonymous
By Anonymous - On 8/28/2010 4:22:05 PM
Very educative article.Adding sieve analysis may be further useful.
 
Anil Kumar Mishra
By Anil Kumar Mishra -  On  7/24/2010 7:23:46 PM
msand is not clear question.However for classification of sand see any soil engineering book.Generally  FM(Finess Modulus)-2.5 is suitable for building construction work.
 
S L Gupta (Civil Engg)
By S L Gupta (Civil Engg) -  On  7/14/2010 4:54:41 PM

Dear Satish Singh


Please clarify about msand in detail so we are in position to give detail reply of your question.

 
satish singh
By satish singh -  On  7/11/2010 10:16:37 PM
helpful
 
satish singh
By satish singh -  On  7/11/2010 10:15:36 PM
can msand be used in plasterig? I have not seen any information regarding that/ Kindly advise.
 
Anonymous
By Anonymous - On 7/4/2010 5:47:36 AM
,.this information is really helpful...
 
Anonymous
By Anonymous - On 5/24/2010 2:45:02 PM
fine sand measures from 0.075 and not 0.75 mm.Pl change
 
Anonymous
By Anonymous - On 5/5/2010 4:06:49 PM
this article is very informative. I want to know the spcification of sand, for sand filling.
 
Anonymous
By Anonymous - On 3/15/2010 11:07:12 AM
good
 
Anonymous
By Anonymous - On 1/25/2010 1:57:45 PM
please give me an Idea about clasiffication of sand based on Zone
 
Anonymous
By Anonymous - On 1/20/2010 12:46:47 PM
very good information. Thanx
 
SUNIL
By SUNIL -  On  7/30/2009 1:50:19 PM
Good and informative article
 
Anonymous
By Anonymous - On 7/3/2009 1:47:07 PM
oh yes....very helpful. Thanks.
 
vivek kumar
By vivek kumar -  On  5/12/2009 11:11:46 AM
nice to be a part of it.
 
GS MALIK
By GS MALIK -  On  3/21/2009 4:19:39 PM
informative.
 
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