Cement Concrete

Civil Engineering Home for Civil Engineers

Test of Bitumen | composition test and uses for pavement construction with aparatus, procedure

Composition test of Bitumen

Composition gives the composition of different volatile, non-volatile and inner materials etc in the bitumen. The test is carried out for following:

A) Distillation test:-

It is used to determine the quantity and quality of volatile constituents and the amount of non-volatile residues present in bitumen.

The relative proportion of bitumen and volatiles present in the bitumen or cutback is determined by Distillation test.

It also measures the amount of volatiles driven off at certain specified temperatures. The residue bitumen is tested for penetration, ductility , and solubility.

distilation test set up
Fig1. distilation test set up

Equipment used for Distillation test:

Distillation flask with cork and thermometers etc. as shown in Fig.

Procedure for Distillation test:

  1. The sample of the material is put into the flask and the specified thermometer is inserted.
  2. The sample is heated and the condensed product collected and measured as shown in Fig.

B) Water content Test:

It’s conducted to determine the water content of bitumen . The specimen is mixed with pure petroleum distillate free from water and heated that distills up the water . The condensed water is collected and expressed as % of weight of original sample. Maximum water content is not greater than 0.2% by weight.

Water present in the bitumen , forms foams of bitumen when heated above 100 oC . Thus water content in bitumen should be minimum.

Procedure for water content test

  1. The known weight of bitumen is mixed in a pure petroleum distillate free from water.
  2. The solution is heated and distilled.
  3. The weight of distilled water is found and expressed as percentage of original weight of sample.
  4. The maximum water content in bitumen should not exceed more than 0.2% by weight.

C) Loss on heating test:

It’s used to determine the amount of volatile materials present in the bitumen. 50 gm of sample is taken and heated for 5 hrs in special oven @ temperature of 163 oC. The result is weighted and loss of weight is calculated as % of original weight.

The loss on heating is not greater than 1 %.

When bitumen heated, it drives off the volatiles and gets hardens. Thus it losses in weight. Thus the loss in weigth of bitumen is determined as follows:

  1. About 50 gram sample of bitumen is taken and weighted  accurately.
  2. Now the sample of bitumen is heated at 163oC for 5 hours in a specified oven designed for this test as per I.S. 1212-1958.
  3. The specimen is weighted again after heating and loss in weight is determined.
  4. The loss of weight is expressed as pwercentage of the original weight. This should not be more than 1 % for bitumen.

D) Solubility test

This test determines the present of inert materials, carbons, salts etc. in bitumen.

Pure bitumen is completely soluble in carbon disulphide(C2s) and carbon tertra chloride(CCl4). Hence any impurity in the bitumen can  be determined by dissolving the bitumen in any of the above solvents.

Hence  2 gm of bitumen is taken and dissolved in 100 ml of solvent (C2s or CCl4). The solution is filtered and resisue is washed , dried  and weighted. The % of insoluble materials w.r.t. original sample in no case should exceed 1 %.

Procedure for solubility test

  1. A sample of about 2 gram of bitumen is dissolved in about 100 c.c. of solvent.
  2. The solution is filtered and the residue is washed, dried and weighted.
  3. Solubility is expressed as percentage of original sample. The insoluble matter should be prefably less than 1 % in carbon disulphide.
  4. If carbon tetrachloride is used as solvent, and the black carbonaceous residue is more than 0.5% then the bitumen is called to be cracked.

E) Spot Test

This test is used to determine the over heated or cracked bitumen . This test is considered more sensitive than the solubility test for detection cracking.

Procedure:
2 gm of bitumen is mixed with 10 ml of Nepthalene. From the solution , first drop is taken after 1 hr. of solution preparation and placed in filter paper and same thing is done after 24 hrs .

If the strain of spot has uniform colour, it means uncracked bitumen . But, if the strain forms annular ring thick brown or black at center and faint at periphery, it’s over-heated or cracked.

F) The Swell Test

This test is conducted for asphalt mix pavements. This test is carried out to determine the possible detrimental effects of water on the pavements.

Equipment:

The test set up is shown in Fig.

Procedure for Swell test

  1. A sample of the bitumen mix is compacted in a metal cyclinder of 10 cm internal diameter and cooled to room temperature.
  2. The specimen along with mould is put in a pan of water and a dial guage assembly is mounted above it as shown in Fig.
  3. The swell of specimen on absorption of water from the pan is indicated  by the dial guage.

You’ll also like:

CONSTRUCTION FACILITIES IN CIVIL CONSTRUCTION INDUSTRIES
Adverse effect of Concrete – CementConcrete.org

(Visited 474 times, 1 visits today)

65 thoughts on “Test of Bitumen | composition test and uses for pavement construction with aparatus, procedure

  1. Ӏ lіke thе helpful іnformation уоu provide іn уour articles.
    Ι’ll bookmark үour blog and check again heгe frequently.
    I am qᥙite certaіn I will learn many new stuff
    гight heгe! Best of luck foг the neⲭt!

  2. Hi! I simply wouⅼԀ likе to offer you
    a huge thumbs up f᧐r уour excellent іnformation үou have got herе ߋn this post.
    I’ll be ⅽoming back to your website for morе soon.

  3. What’s up еverybody, һere evеry person is sharing such know-hoᴡ, ѕo it’s nice
    to read this web site, and I ᥙsed to pay a visit thіs weblog daily.

  4. Hey jᥙst ԝanted tⲟ give yߋu a quick heads ᥙp
    and let yоu know a fеw of the pictures ɑren’t loading properly.
    Ӏ’m not sure why but I thіnk its a linking issue. I’ve tried
    it іn twο different web browsers and botһ show the same outcome.

  5. I’d liкe to thank you foг the efforts you һave
    рut in writing tһis site. I rеally hope to see the samе
    higһ-grade сontent from you ⅼater on as ᴡell. In truth, your creative writing abilities һɑs inspired me tο ցеt my own, personal
    blog noᴡ 😉

  6. Greetіngs from California! I’m bored to tears at work so І decided t᧐ check oᥙt үour blog on my iphone during lunch break.

    I reaⅼly lіke the knowledge ү᧐u provide here and сan’t wait tⲟ taкe a lօߋk
    wһen I get һome. I’m amazed at һow faѕt your blog loaded оn mү mobile ..

    І’m not even using WIFI, just 3G .. Anyhоԝ, amazing site!

  7. Нi there! I’m at work browsing your blog from my new iphone 4!
    Just wanteԀ to say I love reading your blog and look forward to
    all your posts! Keep up the outstanding work!

  8. Hi! I know this іs kinda off topic hоwever , I’d figured Ӏ’d ask.
    Would you be intereѕted in exchanging links
    ߋr mayƄe guest writing a blog post ߋr vice-versa?
    Ⅿy website discusses а ⅼot ߋf the samе topics
    as yourѕ ɑnd I feel we could greatly benefit from each other.
    If you mіght be intereѕted feel free to send me an email.
    Ӏ look forward to hearing frօm ʏou! Excellent blog by the ᴡay!

  9. Hi there! I know this is kind of off topic but I was wondering if you
    knew where I could find a captcha plugin for my comment form?

    I’m using the same blog platform as yours and I’m having difficulty finding one?

    Thanks a lot!

  10. whoah this blog is excellent i love studying your posts.
    Stay up the great work! You recognize, many individuals are hunting around for this
    information, you could help them greatly.

  11. I have been exploring for a bit for any high-quality articles or blog posts
    on this kind of house . Exploring in Yahoo I finally stumbled upon this site.
    Reading this info So i’m satisfied to express that I have an incredibly excellent uncanny
    feeling I came upon just what I needed. I such a lot
    for sure will make sure to do not forget this website
    and provides it a glance on a constant basis.

  12. I wish to show my gratitude for your kindness for individuals that require guidance on this one subject matter. Your very own dedication to getting the message all around appears to be really good and has in every case empowered ladies much like me to realize their objectives. Your personal invaluable help and advice indicates much to me and somewhat more to my colleagues. Thanks a lot; from all of us.

  13. I just want to mention I’m all new to blogs and certainly savored you’re web site. More than likely I’m want to bookmark your site . You surely have good writings. Appreciate it for sharing your web page.

  14. You made some respectable points there. I seemed on the web for the issue and found most people will go together with along with your website.

  15. I just want to mention I’m all new to blogs and certainly savored you’re web site. More than likely I’m want to bookmark your site . You surely have good writings. Appreciate it for sharing your web page.

  16. I just want to say I am very new to blogs and truly savored you’re web site. More than likely I’m likely to bookmark your website . You amazingly come with superb articles and reviews. Regards for sharing your webpage.

  17. Your positions continually have got a lot of really up to date info. Where do you come up with this? Just saying you are very resourceful. Thanks again

  18. I just want to say I am very new to blogs and truly savored you’re web site. More than likely I’m likely to bookmark your website . You amazingly come with superb articles and reviews. Regards for sharing your webpage.

  19. Hi, I do think this is a great web site. I stumbledupon it ;
    ) I will come back yet again since I saved as a favorite
    it. Money and freedom is the best way to change, may you be rich and continue to guide others.

  20. Howdy! This post couldn’t be written much better! Reading through this post reminds me of my
    previous roommate! He always kept preaching about this.
    I most certainly will forward this article to him.
    Pretty sure he’ll have a very good read. Many thanks for sharing!

Leave a Reply

Your email address will not be published. Required fields are marked *