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size of coarse aggregate for concrete 1:2:4

  • How to Choose Quality Coarse Aggregate for Concrete

    11/09/2020· 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 70:30 or 60:40. It is recommended to stack different aggregate sizes to use them efficiently. Prevent the use ofОнлайн-запрос

  • Aggregates for concrete | Aggregates sizes for concrete

    Fine aggregates; Coarse aggregates; 1) Fine aggregates:-The aggregates whose size is less than 4.75 mm are known as fine aggregates. Fine aggregate is also known as sand. 2) Coarse aggregate:- The aggregate whose size is greater than 4.75 mm is known as coarse aggregate. Stone is also known as coarse aggregate. The size of aggeregates comonlyОнлайн-запрос

  • Different Types & Sizes of Aggregate for Concrete

    11/08/2018· The size range of various coarse aggregates given below: Fine gravel: 4mm – 8mm. Medium gravel: 8mm – 16mm. Coarse gravel: 16mm – 64mm. Cobbles: 64mm – 256mm. Boulders: > 256mm . TYPES OF AGGREGATE [1] GRAVEL. Gravel or Graded stone, is another coarse aggregate suitable for concrete mixes. Gravel is formed of rocks that are unconnected to each other. Gravel isОнлайн-запрос

  • HOW TO DECIDE MAXIMUM SIZE OF COARSE AGGREGATE

    23/03/2015· On the other hand in smaller size aggregates the surface area is increased which increases w/c ratio and lower strength is achieved. In general for strength upto 200 kg/cm 2 aggregates upto 40 mm may be used and for strength above 300 kg/cm 2 aggregate upto 20 mm may be used. Conditions That Decide Maximum Size of Coarse Aggregate to be Used inОнлайн-запрос

  • Coarse Aggregates: Types, Properites & Applications

    翻译此页 Size of Coarse Aggregates: The size of the coarse aggregate depends on the use of the concrete is
  • Aggregates for Concrete GreenSpec

    • Aggregates are divided into either ‘coarse’ or ‘fine’ categories. Coarse aggregates are particulates that are greater than 4.75mm. The usual range employed is between 9.5mm and 37.5mm in diameter. Fine aggregates are usually sand or crushed stone that are less than 9.55mm in diameter. • Typically the most common size ofОнлайн-запрос

  • What is the size of coarse aggregate used in concrete? -

    02/03/2018· When the size of aggregate is greater than 4.75 mm ( say 5 mm) it is called coarse aggregate. Graded aggregates are used for better particle packing. The larger the size of aggregate lesser the cement required for same strength up to certain grade...Онлайн-запрос

  • Replacement Of Coarse Aggregate In Concrete [Civil

    The size of fine aggregate particles is less than 4.75mm. Using the E-waste as a partial replacement of coarse aggregate in concrete is the best solution. We can not fully replace material in concrete because it impacts the workability of concrete. The electronic waste is crushed as required particle size and can be mixed with other aggregates in concrete which will not affect the qualityОнлайн-запрос

  • Classification of Aggregates Based on Size and Shape

    Gravel, cobble and boulders come under this category. The maximum size aggregate used may be dependent upon some conditions. In general, 40mm size aggregate used for normal strengths and 20mm size is used for high strength concrete. the size range of various coarse aggregatesОнлайн-запрос

  • Aggregates for Paving and Drainage | Pavingexpert

    As a decorative coarse aggregate in concrete flags , kerbs and block pavers; As fine aggregate in concrete blocks; As a filler and aggregate in asphaltic base/binder course products such as "Glasphalt" As a filter medium in specialist drainage schemes; A laying coursesand made from recycled glass . Containment kerb with exposed decorative glass finish . Gravel. A granular material which can beОнлайн-запрос

  • What is Grading of Aggregates? and Its limits [Civil Planets]

    The aggregates are graded as per IS code 383, when the aggregate size is less than 4.75mm is called fine aggregate & more than 4.75mm 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.Онлайн-запрос

  • Gradation of Coarse Aggregate by Sieve Analysis

    Coarse aggregate is the one retained on 4.75 mm IS Sieve. When the aggregate contains sizes differently in suitable proportions, it is called graded aggregate. The workability of concrete is also improved with well graded aggregate. Single size aggregates make the concrete harsh and does not work well with trowel and between the cables, strands or sheathing. The coarse aggregate may be ofОнлайн-запрос

  • Gradation of Aggregate | Ultimate Guide Construction How

    03/11/2020· The maximum size of coarse aggregate used in concrete has a bearing on economy. Usually more water and cement is required for small-size aggregates than for large sizes ; The water and cement required for a slump of approximately 3 in. and w/c ratio = 0.54 by wt. is shown in Fig. 4-6; Fig. Cement and water contents in relation to maximum size of aggregates, for air-entrained and nonОнлайн-запрос

  • What is the size of coarse aggregate used in concrete? -

    02/03/2018· When the size of aggregate is greater than 4.75 mm ( say 5 mm) it is called coarse aggregate. Graded aggregates are used for better particle packing. The larger the size of aggregate lesser the cement required for same strength up to certain grade...Онлайн-запрос

  • Classification of Aggregates: Grain Size, Density, Shape

    Coarse; The size of fine aggregates is defined as 4.75mm or smaller. That is, aggregates which can be passed through a number 4 sieve, with a mesh size of 4.75mm. Fine aggregates include things such as sand, silt and clay. Crushed stone and crushed gravel might also fall under this category. Typically, fine aggregates are used to improve workability of a concrete mix. Coarse aggregates measureОнлайн-запрос

  • How Coarse Aggregate Affects Mix Design of Concrete?

    Proper grading of coarse aggregate can minimize the possibility of segregation, especially for higher workability and improves the compatibility of concrete. The coarse aggregate grading limits are given in ASTM C33/ C33M and IS 383 – 1970 – table 2, Clause 4.1 and 4.2 for single size aggregate as well as graded aggregate.Онлайн-запрос

  • Coarse Aggregate Fine aggregate ratio in Shotcrete mix

    These curves were obtained with standard concrete sand and a 10 mm (0.394 in.) maximum size crushed granite coarse aggregate. In this figure, the mixture without fibers having a coarse/total aggregates content of 47% has a void content of 29%. In practice, this mixture should contain 29% of cement paste plus approximately 6% of extra paste* inОнлайн-запрос

  • 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 water-ratio than the smaller sizes. 3. The advantage of small aggregate in the water-ratio strength relationship may or may not be sufficient to offset the effects of its higher mixing water demand. It appears that optimum maximum size, so far as strength is concerned, will varyОнлайн-запрос

  • Understanding the Role of Aggregates in Concrete Bay

    The term concrete aggregates covers a variety of products, but are usually summed up as stone and sand, in coarse and fine grade. Coarse aggregates are defined as any material greater than 4.75 mm. A coarse aggregate is also identified as any aggregate retained in a #4 sieve. Fine aggregates are any material less than 4.75 mm that can pass through a #4 sieve and is retained on a #200 sieve.Онлайн-запрос

  • How much cement, sand and coarse aggregate are

    14/08/2016· suppose the mix is 1:2:4 (m15) cement—1/7x1.54x1440k.g=316.8k.g — 6.34 bags sand————1/7x1.54x 2x1500k.g=660k.g or15.53cft 20 m.m brocken stone1/7x1.54x4x1500k.g=1320k.g=31.07 cftОнлайн-запрос

  • 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 water-ratio than the smaller sizes. 3. The advantage of small aggregate in the water-ratio strength relationship may or may not be sufficient to offset the effects of its higher mixing water demand. It appears that optimum maximum size, so far as strength is concerned, will varyОнлайн-запрос

  • Gradation of Aggregate | Ultimate Guide Construction How

    03/11/2020· The maximum size of coarse aggregate used in concrete has a bearing on economy. Usually more water and cement is required for small-size aggregates than for large sizes ; The water and cement required for a slump of approximately 3 in. and w/c ratio = 0.54 by wt. is shown in Fig. 4-6; Fig. Cement and water contents in relation to maximum size of aggregates, for air-entrained and nonОнлайн-запрос

  • Understanding the Role of Aggregates in Concrete Bay

    The term concrete aggregates covers a variety of products, but are usually summed up as stone and sand, in coarse and fine grade. Coarse aggregates are defined as any material greater than 4.75 mm. A coarse aggregate is also identified as any aggregate retained in a #4 sieve. Fine aggregates are any material less than 4.75 mm that can pass through a #4 sieve and is retained on a #200 sieve.Онлайн-запрос

  • Shape, Size Coarse Aggregates

    Coarse aggregates are classified into two main groups: (i) single-size aggregate and (ii) graded aggregate. Single-size aggregate is based on a nominal size specification. It contains about 85 to 100 percent of the material which passes through that specified size of the sieve and zero to 25% of which is retained in the next lower sieve. A graded aggregate contains more than one single-sizeОнлайн-запрос

  • Coarse Aggregate Fine aggregate ratio in Shotcrete mix

    These curves were obtained with standard concrete sand and a 10 mm (0.394 in.) maximum size crushed granite coarse aggregate. In this figure, the mixture without fibers having a coarse/total aggregates content of 47% has a void content of 29%. In practice, this mixture should contain 29% of cement paste plus approximately 6% of extra paste* inОнлайн-запрос

  • What is the effect of coarse aggregate size in compressive

    So, undoubtedly, greater the maximum size of coarse aggregate, greater is the compressive strength of concrete made with 2 precautionary conditions:- 1. The coarse aggregates should be properly graded, and the gradation becomes more and more important as we increase the maximum size of coarse aggregate because of greater voids, which needs to be filled to attain the desired compressive strength.Онлайн-запрос

  • How much cement, sand and coarse aggregate are

    14/08/2016· suppose the mix is 1:2:4 (m15) cement—1/7x1.54x1440k.g=316.8k.g — 6.34 bags sand————1/7x1.54x 2x1500k.g=660k.g or15.53cft 20 m.m brocken stone1/7x1.54x4x1500k.g=1320k.g=31.07 cftОнлайн-запрос

  • Classification of Aggregates: Grain Size, Density, Shape

    Coarse; The size of fine aggregates is defined as 4.75mm or smaller. That is, aggregates which can be passed through a number 4 sieve, with a mesh size of 4.75mm. Fine aggregates include things such as sand, silt and clay. Crushed stone and crushed gravel might also fall under this category. Typically, fine aggregates are used to improve workability of a concrete mix. Coarse aggregates measureОнлайн-запрос

  • Aggregates Coarse, Graded, All-In, Fine & More JDP

    20/40mm Coarse Aggregate : Single sized and graded coarse aggregates including: crushed limestone, crushed granite, crushed gritstone, crushed & uncrushed gravel and secondary aggregates. Can be used in concrete and asphalt production, civil engineering (pipe bedding and surround, filter media) and for decorative uses. 20/32.5mm Coarse Aggregate : 10/20mm Coarse Aggregate : 6/14mm CoarseОнлайн-запрос

  • Effects of shape and size of aggregates in concrete

    Effects of shape and size of aggregates in concrete. Q. How does the shape and size of coarse aggregates affect the properties of concrete? A. Aggregate shape and surface texture influence the properties of freshly mixed concrete more than the properties of hardened concrete. Rough-textured, angular, and elongated particles require more water to produce workable concrete than smooth,