IELTS Diagram: Model Answer Band Score 9

This IELTS diagram model answer is estimated at band score 9. It is possible to have a diagram in your IELTS writing task 1 academic paper. A diagram is also known as a process. The diagram shown below is from IELTS Cambridge Book 8, Test 3.

The diagram below shows the stages and equipment used in the cement-making process, and how cement is used to produce concrete for building purposes.

cement and concrete

  • Source: IELTS Cambridge English Test Book 8

Diagram Model Answer

The diagrams illustrate the way in which cement is made and how it is then used in the process of making concrete. Overall, limestone and clay pass through four stages before being bagged ready for use as cement which then accounts for 15% of the four materials used to produce concrete. While the process of making cement uses a number of tools, the production of concrete requires only a concrete mixer.

In the first stage of making cement, limestone and clay are crushed together to form a powder. This powder is then combined in a mixer before passing into a rotating heater which has constant heat applied at one end of the tube. The resulting mixture is ground in order to produce cement. The final product is afterwards put into bags ready to be used.

Regarding the second diagram, concrete consists of mainly gravel, which is small stones, and this makes up 50% of the ingredients. The other materials used are sand (25%), cement (15%) and water (10%). These are all poured into a concrete mixer which continually rotates to combine the materials and ultimately produces concrete.

Comments: This diagram gives a concise introduction. The overview contains key features of both diagrams and also highlights the connection between them. The body paragraphs are organised well and linking devices are used flexibly and accurately. Each body paragraphs explained the steps of each process in a logical order. Complex sentences are accurate and there is also passive voice used. Collocations are well used.



  1. Mam Liz, is it true that that process diagrams and flow charts have a very very small chance to actually be asked in the exam?

    • They can appear at any time. If your results are important to you, do not presume that diagrams or maps are unimportant.

  2. hello liz, regarding this essay, shouldn’t “ground” in the second paragraph and at the end of the third line be grounded?

  3. Jyoti Grover says

    Hello Liz
    I am an ardent fan of your tutorials..i just want to ask one thing about task 1..shall we write it in present tense or past tense if nothing is mentioned about time like in process tyoe questions

  4. Hardeep kaur says

    Hi liz …. u r commendable.. very precise way of teaching … luv u so much

  5. Thanks a lot for this wonderful website

  6. Hi Liz,
    Instead of ‘overall’, can we use ‘To outline’

    • Why change the signpost “overall”? It is the best signpost to indicate an overview. This is formal, report writing. It will not improve your score to change that signpost.

  7. I have a question … do we need to write process in passive voice or active only ?

  8. The diagrams explains the steps and equipments utilize in the production of cement and the way in which concrete are formed for housing reasons.
    Overall, it can be deduced that the process of cement making used four equipments and two materials. In contrast, concrete was produced from four materials that was mixed together in one machine which rotates in a gradual motion.

    First of all, the production of cement was made with limestone and clay which was crushed to powder and then passed through the mixer. Then, the materials was heated at the end of the rotating heater tube before it was grounded. Later on, the cement produced was packed into bags.

    However, in the production of concrete, four materials were used compared to cement production that utilized two resources. 15% of cement which was made from limestone and clay was added to 25 percent of sand. Two times the size of sand represents the size of gravel which is small stones. Moreover, 10% of water was also added. All this material were mixed in a concrete mixer which rotates in a gradual movement.

  9. Dear Liz,
    I noticed a difference between what you said on one tutorial and this example here. Should overall be separated into a single paragraph or not?

    • There are no fixed rules. Diagrams generally have a very very short introduction. Sometimes it is no more than 10 words. For that reason I put the overview in the same paragraph. It’s fine to do that. For all other task 1, I keep it as a separate paragraph. The most important thing is using the word “overall” to indicate to the examiner that it is the overview and making sure all key features are highlighted.

  10. Charles AMOS says

    The flow chart illustrates the process of making cement, while the other diagram shows how different materials are combined with the product to produce concrete.

    Overall, cement manufacturing takes four steps, beginning with crushing and ending with cement in bags. Regarding concrete production, different materials in constituencies are added/mixed to under rotation to make concrete.

    Cement making steps are as follows: First and foremost, inputs namely; limestone and clay are put in a crusher where they are grinded to produce powder. Then, the material is channeled into a mixer where it is mixed thoroughly. The next stage involves passing the powder into rotating heater where heat is applied, the resource is rotated consequently, as heater rotates. The final stage focuses on the by-product which is crushed under grinder to produce cement which is put in bags.

    Looking at concrete production diagram, initials stage: water (10%), cement (15%), sand (25%) and gravel (50%) are added together in concrete mixer, then, the mixer is put under rotation and the inputs are mixed to produce concrete.

    Word count: 180 words

  11. The diagram provides information about the different levels and tools required in the production of cement, and how cement contributes to the making of concrete for construction purposes.

    Overall, the manufacturing of cement requires a dry process, while concrete production on the other hand is a wet method. Also, the mixer Isa necessary equipment in both cement and concrete making.

    The first stage in the production of cement is crushing ofboth limestone and clay to give a fine powdered mixture,after which it is transported into the mixer for thorough mixing. Next the mixture enters the rotating heater were heat is directly acted upon it. Then the heated mixture is poured into the grinder for more grinding of the particulars. The result is cement and then they are packed into bags for distribution and use

    The making of concrete requires the combination of cement (15%), water(10%), sand (25%) and small stones called gravel also by 50%). The composition is poured into the concrete mixer for proper mixing of every ingredients.

  12. Ajaypal singh says

    This example is helpful for me and i learnt lot of things related to way we can use connectors include then and afterwards . I want next example about flow chart and pie chart. Thanks if you read it then comment also.

    • You can find model answers and tips for writing task 1, in the writing section of the website. Just click on the RED MENU BAR at the top of the website 🙂

  13. Hi liz,
    Thanks for your up-to-date informations. I want to ask a question that is it okay to write a overveiw in 2nd paragraph and again in the end add a conclusion paragraph in another way, I mean by another prospective in writing task 1?

    • You are being marked on your ability to group information together – not to repeat it and scatter it in different paragraphs.

  14. Hi Liz,
    Can the overview come last?

  15. Hi Liz,
    I cannot upload answer to first IELTS Bar Chart Practice Sample question ( men ,women and children eating five portions of fruits and vegetables).
    Please share a link for the answer.
    Thank you.

  16. Band 8

  17. Thanks madam Liz, the work on your web is quite blissful

  18. LAMAN TEMEL says

    Hello Liz
    First of all, thank you for your videos, tips and all you do for us. I want to know one thing. Do we have to write writing tasks in IELTS with handwriting?

    • If you are taking normal IELTS, it will all be hand written. However, there are some countries and some test centers that offer computer delivered IELTS.

  19. Hi Liz,

    Thanks for a big support, your website is too useful.

  20. Jilson Thomas says

    The diagrams depict the process of cement production and its usage in making concrete.

    In cement production there are 4 stages involved. In the first stage limestone and clay are crushed to powder form. This then passes through a mixer into a rotating heater, which is supplied with constant heat at one end. Afterwhich, the mixture is ground to develop cement. This final product is bagged thereafter.

    The process of concrete making involves 4 items, cement(15%), sand(25%),gravel(50%) and water(10%). All these ingredients are mixed in a concrete mixer which rotates clock-wise.This process results in the formation of concrete.

    Overall, the making of cement is of 4 stages, in which a number of equipments are used. As far as concrete production is concerned, all the substances are mixed in a single machine.

  21. Hi, Liz. Firstly, I’d like to thank you for these great lessons which are very helpful for me in preparing my upcoming academic IELTS test. Secondly, I’d like to ask you if we are allowed to use/draw an arrow in the writing tasks? You know, to add some words that we’ve forgot to mention earlier. And when we use pen in writing tasks, is it okay to cross out some words, even a long sentence?

  22. You are astonishing. thanks a lot for your help, time and on top of that patience.

  23. Hello,

    can all diagrams be written in a passive voice? such as the tense used in the diagram above?

  24. Maria Nizami says

    Hi Liz, first of all, thank you for your great advice. I was wondering about the format of writing. Are we allowed to leave space in the first sentence of every paragraph? (just to indicate that there is a new paragraph starting ?


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