size of coarse aggregate for concrete in nigeria

Sep 11 2020 · Coarse aggregate should contain various fraction sizes to ensure adequate compaction of particles hence resulting in increased density and reduced voids in concrete In the majority of concrete works aggregate sizes of 20 mm or smaller are used To ensure good coarse aggregate compaction and higher concrete density it is recommended to mix 20 mm and 10 mm coarse aggregates in the ratio of 7030 or 6040...We are a professional mining machinery manufacturer, the main equipment including: jaw crusher, cone crusher and other sandstone equipment;Ball mill, flotation machine, concentrator and other beneficiation equipment; Powder Grinding Plant, rotary dryer, briquette machine, mining, metallurgy and other related equipment. which can crush all kinds of metal and non-metallic ore, also can be dry grinding and wet grinding.If you are interested in our products or want to visit the nearby production site, you can click the button below to consult us.Welcome to our factory to test machine for free!

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  • How to Choose Quality Coarse Aggregate for Concrete

    How to Choose Quality Coarse Aggregate for Concrete

    Sep 11 2020 · Coarse aggregate should contain various fraction sizes to ensure adequate compaction of particles hence resulting in increased density and reduced voids in concrete In the majority of concrete works aggregate sizes of 20 mm or smaller are used To ensure good coarse aggregate compaction and higher concrete density it is recommended to mix 20 mm and 10 mm coarse aggregates in the ratio of 7030 or 6040

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  • How coarse aggregate affects the mix design of concrete

    How coarse aggregate affects the mix design of concrete

    Oct 07 2019 · The bigger the size of the aggregate the smaller its bondable surface area becomes for cement sand and water This means that less water and fine aggregate is needed with concrete mixes that contain coarse aggregate The size of the coarse aggregate determines the cement to water ratio Less water means a stronger mix but it also becomes

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  • What is Grading of Aggregates and Its limits Civil Planets

    What is Grading of Aggregates and Its limits Civil Planets

    May 31 2020 · The aggregates are graded as per IS code 383 when the aggregate size is less than 475mm is called fine aggregate more than 475mm is called coarse aggregate The aggregate gradation is determined by the fineness modulus method where aggregates are passing through the sieve as per IS standard to classify its size

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  • Classification of Aggregates based on Size Shape  Source

    Classification of Aggregates based on Size Shape Source

    May 13 2020 · The coarse aggregates are manufactured in different sizes like 10 mm 12 mm 20 mm and now manufactured sand is also available instead of

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  • HOW TO DECIDE MAXIMUM SIZE OF COARSE AGGREGATE

    HOW TO DECIDE MAXIMUM SIZE OF COARSE AGGREGATE

    Mar 23 2015 · On the other hand in smaller size aggregates the surface area is increased which increases wc ratio and lower strength is achieved In general for strength upto 200 kgcm 2 aggregates upto 40 mm may be used and for strength above 300 kgcm 2 aggregate upto 20 mm may be used Conditions That Decide Maximum Size of Coarse Aggregate to be Used in Concrete The following

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  • Different Types  Sizes of Aggregate for Concrete

    Different Types Sizes of Aggregate for Concrete

    Aug 11 2018 · Coarse aggregates are particulates that are greater than 95mm The usual range employed is between 95mm and 375mm in diameter Typically the most common size of aggregate used in construction is 20mm A larger size 40mm is more common in mass concrete

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  • EFFECTS OF AGGREGATE TYPE SIZE AND CONTENT ON

    EFFECTS OF AGGREGATE TYPE SIZE AND CONTENT ON

    The concrete mixtures incorporate either basalt or crushed limestone aggregate sizes of 12 mm h in or 19 mm Y in and coarse aggregate contents with aggregate volume factors ACI 211191 of075 and 067 Watertocementitious material ratios range from 024 to 050

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  • Effects of Coarse Aggregate Size on the Compressive

    Effects of Coarse Aggregate Size on the Compressive

    Effect of Aggregate Size Distribution on Concrete Compressive Strength SUST Journal of Science and Technology Vol 19 No 5 2012 P 3539 Yaqub M and I Bukhari Effect of size of coarse aggregate on compressive of high strength concrete 31st Conference on Our World in Concrete Structures 16 – 17 August 2006 Singapore

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  • Aggregates  Portland Cement Association

    Aggregates Portland Cement Association

    Coarse aggregates are any particles greater than 019 inch but generally range between 38 and 15 inches in diameter Gravels constitute the majority of coarse aggregate used in concrete with crushed stone making up most of the remainder Natural gravel and sand are usually dug or dredged from a pit river lake or seabed

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  • PDF ASSESSMENT OF CONCRETE AGGREGATES IN IBADAN NIGERIA

    PDF ASSESSMENT OF CONCRETE AGGREGATES IN IBADAN NIGERIA

    The study utilize cement of the same strength 425R coarse aggregate of the same size 10mm the same watercement ratio 06 and concrete mix 124 in order to determine the influence of

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  • Effect of Local Binary Mixtures of Coarse Aggregates on

    Effect of Local Binary Mixtures of Coarse Aggregates on

    By maintaining a slump of 50 mm the effect of varying sizes of coarse aggregates – 10 mm 14 mm 20 mm and combination of these sizes – on the mechanical properties of concrete was obtained Aggregates which were used in this work were sourced from quarries located in Auchi area of Edo State and had impact values between 16 and 28

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  • PAPER OPEN ACCESS Related content Effect of Different

    PAPER OPEN ACCESS Related content Effect of Different

    Effect of Different Coarse Aggregate Sizes on the Strength Characteristics of Laterized Concrete M A Salau12 1and A O Busari 1University of Lagos Department of Civil and Environmental Engineering Lagos State Nigeria Email ajibsalau

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  • How coarse aggregate affects the mix design of concrete

    How coarse aggregate affects the mix design of concrete

    Oct 07 2019 · The bigger the size of the aggregate the smaller its bondable surface area becomes for cement sand and water This means that less water and fine aggregate is needed with concrete mixes that contain coarse aggregate The size of the coarse aggregate determines the cement to water ratio Less water means a stronger mix but it also becomes

    Details >
  • Compressive Strength of Concrete Made from Aggregates

    Compressive Strength of Concrete Made from Aggregates

    The major coarse aggregate used in the production of concrete in Nigeria is crushed granite Although other natural aggregates such as river gravel and naturally occurring stone deposits have been

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  • LEJPT Template

    LEJPT Template

    The maximum size of a wellgraded coarse aggregate of a given mineralogy can have two opposing effects on the strength of normal concrete 3 mentioned that with the same cement content and consistency concrete mixtures containing larger aggregate particles require less mixing water than those containing smaller aggregate

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  • What is Grading of Aggregates and Its limits Civil Planets

    What is Grading of Aggregates and Its limits Civil Planets

    You are all aware that aggregates occupy 70 to 80 of the total volume of concrete The fine aggregates are used as filler material the coarse aggregate are used in concrete to increase the compressive strength of the concrete The size of the aggregates influences the bondage of the concrete ingredients

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  • Aggregate size Concrete Construction Magazine

    Aggregate size Concrete Construction Magazine

    The larger sizes will require less mixing water and hence for a given cement factor will produce concrete of lower waterratio than the smaller sizes 3 The advantage of small aggregate in the waterratio strength relationship may or may not be sufficient to

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  • What nominal maximum sizes of aggregate are

    What nominal maximum sizes of aggregate are

    Because maximum aggregate size can impact concrete properties such as shrinkage and also the cost of concrete the largest aggregate size consistent with the requirements of 26421 should be permitted With the wcm fixed the larger the nominal maximum size of aggregates the lower the cement content for a given consistency Or stated

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  • Aggregates  Portland Cement Association

    Aggregates Portland Cement Association

    Coarse aggregates are any particles greater than 019 inch but generally range between 38 and 15 inches in diameter Gravels constitute the majority of coarse aggregate used in concrete with crushed stone making up most of the remainder Natural gravel and sand are usually dug or dredged from a pit river lake or seabed

    Details >
  • Aggregates for concrete  Aggregates sizes for concrete

    Aggregates for concrete Aggregates sizes for concrete

    2 Coarse aggregate The aggregate whose size is greater than 475 mm is known as coarse aggregate Stone is also known as coarse aggregate Stone is also known as coarse aggregate The size of aggeregates comonly used for prepairing different grade of concrete are given below

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  • Concrete Aggregates  Boral

    Concrete Aggregates Boral

    Normally sized as coarse aggregate or fine aggregate Coarse Aggregate is normally greater than 5mm Fine Aggregate is aggregate less than 5mm Can be a single sized material typically 20mm 14mm 10mmor 7mm or a graded aggregate consisting of a blend of single sized aggregate Concrete Aggregates are produced to Australian Standards AS 2758

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  • COST EVALUATION OF PRODUCING DIFFERENT

    COST EVALUATION OF PRODUCING DIFFERENT

    In accordance with size i Coarse aggregate Aggregates predominately retained on the No 4 475 mm sieve For mass concrete the maximum size can be as large as 150 mm ii Fine aggregate sand Aggregates passing No4 475 mm sieve and predominately retained on the No 200 75 μm sieve In accordance with sources i

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  • Effects of maximum aggregate size on UPV of brick

    Effects of maximum aggregate size on UPV of brick

    Investigation was carried out to study the effects of maximum aggregate size MAS 125mm 190mm 250mm 375mm and 500mm on ultrasonic pulse velocity UPV of concrete For investigation first class bricks were collected and broken to make coarse aggregate The aggregates were tested for specific gravity absorption capacity unit weight and abrasion resistance

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