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Civil Engineering questions and answers. A cement grinding mill "A" with a capacity of 50 tons per hour utilizes forged steel grinding balls costing P 12,000 per ton, which have a wear rate of 100 grams per ton cement milled. Another cement mill "B" of the same capacity uses high chrome steel grinding balls costing P 50,000 per ton with wear ...
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During the cement manufacturing process, upon the cooling of the clinker, a small amount of gypsum is introduced during the final grinding process. Gypsum is added to control the "setting of cement". If not added, the cement will set immediately after mixing of water leaving no time for concrete placing.
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Ordinary concrete mixes or cement cannot be used as an "overlay" or skim coat as it requires much thickness for strength. Specialty modified cement mixes, in pails or pumped, are required to obtain adhesion and compressive strength in thin overlays. These are expensive. Grinding concrete requires diamond wheels and is laughable in this …
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cement is also available, but is usually more expensive. 1. Cement mixed with water, sand and gravel, forms concrete. 2. Cement mixed with water and sand, forms cement plaster. 3. Cement mixed with water, lime and sand, forms mortar. Cement powder is extremely fine; one kilo (2.2lbs) contains over 300 billion grains.
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HS: Traditional horizontal mills are generally not particularly energy efficient. Only a very small part of the energy is transformed into efficient grinding, with the remaining energy channeled into liner and media wear, heat and noise. In terms of technology, there is not much that can be done with the mill itself except for the engine and ...
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About Question On Cement Mill Ulang. About Question On Cement Mill Interview Questions, cement mill related technical question answer, cement raw mill vrm interview IELTS Task 1 Process Cement and Concrete Below is a sample band 9 answer to a process task 1 question on concrete Cambridge English IELTS Past cement mill …
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The Concrete Grinding Process in 3 Simple Steps. ... Here are the answers to some of the most commonly asked questions about concrete grinding. ... While the general answer is one-sixteenth of an inch per pass, renting and using one for yourself may be the only way to get a definite answer. But rest assured that when you …
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Questions and Answers About Concrete. First, many people confuse cement and concrete. Cement is an ingredient in concrete. Concrete is the final product used for roads, sidewalks, etc. So, there aren't any "cement trucks," only "concrete trucks.". And no "cement sidewalks," only "concrete sidewalks.".
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Workability of concrete is defined as the ease with which can be mixed, transported and placed in position so that the concrete remains homogenous. 9. What are the factors affecting workability? 1. Water content 2. Mix proportions 3. Size and shape of aggregates 4. Grading of aggregate 5. Use of admixtures 10. What are the properties of cement?
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Question: Answer all the five questions Time: 3 hrs. 1. Explain cement manufacturing process and mention major differences between dry process and wet process. ... There are four phases in the manufacturing of concrete: (1) crushing and grinding of materials, (2) mixing, (3) burning, and (4) grinding and packing. ... Answer all the five ...
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Cement chemistry Question 2. What will be the effect of clinker on cement grinding which is produced from 100 per cent petcoke. The chemistry of clinker is as equivalent as when produced with other fuels. Also nodulisation of petcoke clinker is good. Kindly advice how to improve cement grinding performance with petcoke clinker.
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See Answer See Answer See Answer done loading. Question: what is the purpose of grinding the 23 clinker during the cement manufacturing process * (2 نقطة) أدخل إجابتك . I want to write on the computer, not in handwriting, please. Show transcribed image text.
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material that goes into the feed end of the kiln, two thirds of a ton the comes out the discharge end, called clinker. This clinker is in the form of marble sized pellets. The clinker is very finely ground to produce portland cement. A small amount of gypsum is added during the grinding process to control the cement's set or rate of hardening. TOP
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Wet grinding is typically the preferred method for preparing concrete surfaces, as it offers a greater degree of accuracy and smoothness. It also leaves behind fewer scratches on the ground surface than dry grinding. In addition, wet grinding uses relatively low-powered equipment, making it more affordable to operate.
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If you have done a little research and ask good questions to the interviewer then you will get selected. The interview lasts for about 15 minutes. Interview Questions. What is your understanding of the project, do you have any questions and do you understand the cement manufacturing process.
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Statistics and Probability. Statistics and Probability questions and answers. 8.14 A civil engineer wants to compare two machines for grinding cement and sand. A sample of a fixed quantity of cement and sand is taken and put in each machine. The machines are run and the fine- ness of each mixture is noted. This process is re- peated five times.
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It will also help you to strengthen your time management skills. Concrete Technology MCQs are a prerequisite to the current examination pattern. If you wish to learn more about MCQs, you can check notes, mock tests, and previous years' question papers. Get an idea about Concrete Technology MCQs by solving the ones compiled below for your ...
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• Process Dynamics: Cement grinding is a dynamic process influenced by various factors such as feed rate, mill ventilation, grinding pressure, and material moisture content. Changes in these process variables can impact the fineness control. ... But this is a network optimisation question and the optimisation would entail outbound logistics ...
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Explanation: The fineness of the cement is checked to test the proper grinding to the cement which significantly influences the evaluate about hydration. These two tools is used for determination of the fineness of dry: 1) Air permeability method ( Blaine) The fineness for cement the measured as the specific surface. Specific surface is …
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arrow_forward_ios. A cement grinding mill "A" with a capacity of 50 tons per hour utilizes forged steel grinding balls costing ₱ 12,000 per ton, which have a wear rate of 100 grams per ton cement milled. Another cement mill "B" of the same capacity uses high chrome steel grinding balls costing ₱ 50,000 per ton with wear rate of 20 ...
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Basic Civil Engineering Questions and Answers – Manufacture of Cement. This set of Basic Civil Engineering Multiple Choice Questions & Answers (MCQs) focuses on …
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Why cement beneficiation is done? a) To remove silica and iron content. b) To remove silica and aluminum content. c) To remove silica and sulfur content. d) To remove silica and magnesium content. View Answer. 5. Why dry grinding process is preferred in the Portland cement production? a) Savings in heat.
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How does the cement grinding plant work? Clinker, gypsum and admixture – the three components are mixed in a certain specific proportion and transported on the belt conveyor to the cement mill for further grinding. …
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The cement grinding process include the admixture crushing, cement batching station, pre-crushing, high and fine powder grinding, fine powder separat …View the full answer
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Answer: B. Concrete Technology objective questions with answers pdf download online exam test. 151. Pick up the incorrect statement from the following: A. The degree of grinding of cement, is called fineness. B. The process of changing cement paste into hard mass, is known as setting of cement. C.
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The correct answer is to Control the rate of setting.. Key Points. A small amount of gypsum is usually added at the final grinding stage in order to control the setting of the cement. Hence gypsum controls the rate of hardening of the cement.; During the cement manufacturing process upon cooling of clinker a small amount of gypsum is added …
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Our cement portfolio provides a one-stop set of solutions for all parts of the production process. The solutions integrate seamlessly into your existing production processes, and come with support that you can count on, anywhere in the world. Which instrument for which operation in the cement process? Find the answer in the illustration below.
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This set of Concrete Technology Multiple Choice Questions & Answers (MCQs) focuses on "Dry Process". 1. What is dry process? a) Grinding and mixing of the raw materials …
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The manufacture procedures of Portland cement is described below. Mixing of raw material. Burning. Grinding. Storage and packaging. 1. Mixing of …
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