Nigeria is rich is solid mineral resources, such as: Kaolin, gypsum, mica, clay, tantalite, iron ore, gemstone, silica sand.
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Recycling concrete &building rubble is not only able to bring profit to investors, but also good for environment protection.
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By absorbing the advanced technology from the world, we researched and designed PF series impact crusher.…
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Base on the plentiful experience of producing and marketing of impact crusher, Sofol R&D institution…
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Adopting technology from the world, PY Series spring cone crusher has an excellent performance in secondary…
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The vibrating screen is a kind of sieving equipment of international advanced level, developed by our…
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Sofol VSI Series vertical shaft impact crusher is designed by reputed German expert of Sofol and every…
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1.BATCHING. The process of measuring the ingredients required for the preparation of the concrete is termed as 'Batching'. Batching can be done by any of the following methods: Weight Batching. Volume Batching. Volume …
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Our AI PPT Creator turns it into a storm of awe-inspiring slides. ... AI Presentation Makers leverage artificial intelligence to automate design and content suggestions, making the creation process faster and more efficient than traditional methods. Can I customize the design templates in the AI Slide Maker to fit my brand?
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2. In R/C ingress of moisture of air into concrete causes corrosion of reinforcement and results in the volume expansion of steel bars, consequently causing cracks & spalling of concrete cover. 3. The moisture penetration …
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The document describes the construction process for columns, slabs, and beams in reinforced concrete structures. It discusses the materials used and the typical steps involved, which include: 1) Layout and formwork installation 2) Placement of reinforcing steel based on structural designs 3) Pouring and finishing of concrete 4) Curing of concrete to gain full …
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8. Terminology • Tendon: A stretched element used in a concrete member of structure to impart prestress to the concrete. • Anchorage: A device generally used to enable the tendon to impart and maintain prestress in concrete. • Pretensioning: A method of prestressing concrete in which the tendons are tensioned before the concrete is placed.
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The document discusses the potential for geopolymer concrete to reduce CO2 emissions from the concrete industry. Geopolymer concrete is made from industrial byproducts like fly ash rather than Portland cement, and can offer benefits like higher strength, fire resistance, and durability while reducing CO2 by up to 90% compared to ordinary Portland cement concrete.
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Application VSI series crushers are widely used in crushing non-metal mine, concrete, fireproof material, abrasive filler, frit, construction aggregate, sand, metallurgy and so on. It is the indispensable machine in sand making industry and it is also the most ideal truing machine for mining and construction industries.
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26. Polymer impregnated concrete with polymer loading of 5.6% MMA and polymerized by radiation have shown flexural strength 3.6 times more than that of the control specimen, i.e. the flexural strength was increased to 18.8 MPa from 5.2 MPa. Compressive Creep deformation of MMA impregnated concrete and styrene— impregnated concrete has been …
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Waste material concrete ppt - Download as a PDF or view online for free. Submit Search. ... • It is by product of resulting from the production of alumina from bauxite by bayer's process is known as red mud. • Concrete made with this aggregate have more compressive, tensile and flexural strengths than gravel. ...
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7. Classification & properties of recycle aggregate concrete Material composition is the basis for classification of recycled concrete aggregate in two main types- 1) Crushed concrete 2) Mixed material Each of these …
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Shotcrete is today an all-inclusive term that describes spraying concrete or mortar with either a dry or wet mix process. Gunite is a trademarked name that is incorrectly used to describe the dry-mix shotcrete process Shotcrete emerged as the only acceptable industry term to correctly describe "pneumatically applied concrete".
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8. Measurement of materials used to be in making of concrete • Use wooden or steel measurement boxes to ensure consistency in the mix.Since at small sites,batching is always done as per bag of cement,the measurement box dimension is in multiples of 1 bag of cement,or 35 litres (1 bag cement equals 35 litres in volume).A convenient size of the …
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The steel making process involves three main stages: 1) Preparing iron ore by removing impurities through washing, crushing, and sieving. 2) Using a blast furnace to heat iron ore, coke, and limestone above 1500°C to produce pig iron. 3) Further processing pig iron in a converter to reduce its carbon content and remove impurities by adding ...
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Concrete Mix Design For a concrete technologist, he should have a minimum knowledge about CMD. CMD can be defined as process of selecting suitable ingredients of concrete and determining their relative proportions with object of producing concrete of certain minimum strength and durability as economically as possible.
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Or Budgeting is a concrete precise picture of the total operation of an enterprise in monetary terms. By: H.M. Donovan 4. ... Managers must be willing to devote their time and energy to the budgeting process. 8. FORMAL BUDGETING PROCESS AND PROCEDURES: Should be available in budget manual, in which objectives are clarified and instructions for ...
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The document discusses precast concrete pile driving methods and risk assessment. It describes precast concrete piles as prefabricated, high-strength columns driven into the ground by a hammer. Various pile driving methods are discussed, including hydraulic static pile drivers, diesel hammers, air hammers, and vibratory hammers.
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6. The Administrative ModelAdministrative Model of decision making:Challenges the classical assumptions that managers have and process all the information.As a result, decision making is risky.Bounded rationality:There is a large number of alternatives and information is vast so that managers cannot consider it all.Decisions are limited by people's …
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Concrete is used as a building material for many applications. These include highways, streets, parking lots, parking garages, bridges, high-rise buildings, dams, homes, floors, sidewalks, …
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Cement Production. 2. Portland Cement. By definition. a hydraulic cement produced by pulverizing. clinker consisting essentially of hydraulic. calcium silicates, usually containing one or more. of the forms of calcium sulfate as an …
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In this method, concrete conveys from a central discharge point to formwork. Belt conveyors: It is used to convey concrete horizontally or inclined on the construction site. 4. Placing of concrete: Placing of concrete is the …
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• Download as PPT, PDF • 1 like • 683 views. AI-enhanced description. Enrique Martinez Follow. The document provides instructions for a 4-step process to polish concrete floors using common cleaning equipment …
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6. CONSTITUENT MATERIALS AND PROPERTIES Properties of Aggregates, Water and Admixtures - Aggregates make up up 59-75% of concrete volume; paste constitutes 25-40% of concrete volume. Volume of cement occupies 25-45% of the paste and water makes up to 55-75%. It also contains air, which varies from 2-8% by volume - Strength of concrete is …
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• Asphalt concrete pavement material is commonly composed of 5% asphalt/bitumen cement and 95% aggregates (stone, sand, and gravel). • Due to its highly viscous nature, asphalt/bitumen cement must be heated so it can be mixed with the aggregates at the asphalt mixing plant. • Asphalt concrete paving is widely used in airports around the ...
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The kiln exit gas temperature will depend on the process. Dehydration Dehydration zone zone. 450°C 450°C 800°C 800°C 840°F 840°F 1470°F 1470°F. Gas Gas Temp Temp. Calcination …
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4. Definitions of decision making Decision making is defined as an act of determining in one's own mind upon an opinion or course of action. (Webster's dictionary) It is a conscious human process involving both …
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14. FUNCTIONAL ROLE OF VARIOUS PROCESS Chipper Bin: In this bin, with the help of heavy knives wood logs were reduced to size 2- 5 cm. Digester Tower/cooking: It is about 25-30 m tall. chips are preheated with turpentine and non-condensable gases. For controlling digestion temperature cooking liquor is withdrawn and circulated through heat …
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It lists 10 spelling words and defines consonant, digraph, and crescent. It then explains the process of syllabication and defines syllable. It provides 4 rules for splitting words into syllables based on their vowel and consonant patterns. It also distinguishes between concrete and abstract nouns, listing examples of each.
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It is a significant structural building material. Raw materials for cement creation are limestone, sand or clay, bauxite, and iron mineral, and may incorporate sheets, chalk, marl, shale, clay additionally impact blast furnace slag. …
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54. Selection of fodders for silage making • Silage can be made from all winters and summer fodders but usually maize, oats, sorghum etc. are considered best for silage making. • Normally fodders with Broad leaves • Thick stems • Leguminous fodders have less carbohydrates, they are usually mixed with non leguminous fodders like maize and sorghum …
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Self-curing concrete is achieved by means of replacing a part of aggregate by lightweight aggregate or adding chemical admixtures. The self-curing process of concrete takes place from inside to outside, thus reducing the autogenous shrinkage and self-desiccation, especially for the high-performance concrete with relatively low water/binder ratio.
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12. COMPACTION In the process of placing concrete, air is entrapped. The entrapped air reduces the strength of concrete by 30 %. Hence it is necessary to remove the air which is achieved by compaction. Either by hand or by vibrators. In hand compaction method, concrete is compacted by ramming, tamping or spading. Concrete can be compacted by …
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1. Cube Test for hardened concrete • To determine the compressive strength of concrete Procedure • Test should be confirm to British standards Part 116-1881 • Cube mould size should be as per standards 150cmx150cmx150cm+- 0.15mm or 100cmx100cmx100cm+-0.15mm • Sample should be collect as per BS Part 101-1881 as discussed in Workability Test …
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3. Advantages of Precast Concrete Construction Very rapid speed of erection Good quality control Entire building can be precast-walls, floors, beams, etc. Rapid construction on site High quality because of the controlled conditions in the factory Prestressing is easily done which can reduce the size and number of the structural members.
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Chapter 7: Concrete Construction Practices Batching and mixing. Transportation. Placement of concrete. Finishing concrete. Special aspects of handling concrete. The production of high …
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Presenting proposal template for concrete supplier service timeline ppt powerpoint presentation ideas graphics pdf to provide visual cues and insights. Share and …
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Formwork is a temporary mold used to contain and shape wet concrete until it is cured, and gain sufficient strength to support its own weight. ... Weather condition 1. Hydration process accelerates in hot weather conditions as compared to cold and humid weather conditions. 28. Time of Removal of formwork: 29. • First free end's support should ...
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The Cement Manufacturing Process. While each cement plant may differ in layout, equipment, and appearance, the general process of manufacturing portland cement is the same: crushed limestone and sand are mixed with …
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Department of Civil Engineering Definition Of Curing As Per IS 456:2000 "Curing is the process of preventing the loss of moisture from the Concrete" As Per ACI-308R "The Term "CURING" is frequently used to describe the process by which hydraulic- cement Concrete matures and develops hardened properties over a time as a result of the ...
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PE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
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