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Coarse Aggregate When the aggregate is sieved through 4.75mm sieve, the aggregate retained is called coarse aggregate. Gravel, cobble and boulders come under this category. The maximum size aggregate used may be …
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A total of 108 numbers of concrete cylinder (150mm×300mm) were tested using six nominal sizes (12.5, 19.0, 25.0, 32.0, 38. 0 and 50.0 mm) of coarse aggregate and si x cement contents (150,...
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Concrete cubes were produced with 6, 10, 12.5, 20 and 25 mm aggregates for the two nominal mixes and they were ...size of coarse aggregate for concrete 1 2 4,Size Of Coarse Aggregate For Concrete 1 2 4. 202026This study investigates the effect of aggregate sie on the compressive strength of concrete.
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How to Calculate Quantities of Cement, Sand and Aggregate. In the step 3 of "How To Calculate Quantities Of Cement, Sand And Aggregate For Nominal Concrete Mix (1:2:4)" you have calculated that: 01 cum of concrete will require Cement required = 1/0.167 = 5.98 Bags ~ 6 Bags Sand required = 115/0.167 = 688 Kgs or 14.98 cft Aggregate required = 209/0.167 = 1251 …
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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 …
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Coarse aggregate is any material whose particles are anywhere from 3/8 inches and 1.5 inches in width. This is the size of aggregate often used in road construction. Fine aggregate: Most fine aggregates consist of crushed stone or natural sand. Most of the present particles must be able to pass through a 3/8-inch sieve.
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(2017 conducted to find the effect o f coarse aggregate size on concrete strength. ... 1: 2: 4 and 1: 3: 6 (Cement: Sand: Gravel). In each mix, five maximum aggregate sizes were used which are 9.5 ...
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1) fine gravel -4 to 8 mm 2) medium gravel- 8 to 16 mm 3) coarse gravel -16 to 64 mm 4) pebbles -4 to 64 mm 5) cobbles -64 to 256 mm 6) boulder – more than 256 mm. Size of aggregate used in construction. Size of aggregate used in …
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The maximum size of coarse aggregate that can be used in a mix depends on the size, shape, and reinforcing of a member, based on these "not-to-exceed" guidelines (see Photos 5 and 6): 3/4 of the clear spacing between rebar or …
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underneath to catch material passing the finest sieve (Fig. 1). Sieve sizes commonly used for concrete aggregates are detailed in Table 1, and various physical properties of normalweight …
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Size of Coarse Aggregate Materials that are large enough to be retained on the 4.7mm sieve size usually constitute coarse aggregates and can reach a maximum size of 63mm. The size of coarse aggregates affects several …
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Generally, coarse aggregates, up to 80–150 mm in size, are used in dam concrete. The reaction mechanism applicable to fine aggregates may not be adopted for coarse aggregates. The effect of coarse aggregates on the AAR expansion of dam concrete is not yet well understood.
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If, however, the two mixes are designed for the same slump and workability, and with the same cement content, the mix with l/2-inch aggregate is likely to be somewhat stronger, because its water-cement ratio will be lower. However this increase in strength may not be significant because of other factors that affect strength. About the Author
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1. Maximum Aggregate Size. The maximum size of coarse aggregate is one of the factors that controls water demand to achieve certain workability. It also dictates quantity of fine aggregate content needed for producing cohesive mix. …
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Coarse aggregate is any material whose particles are anywhere from 3/8 inches and 1.5 inches in width. This is the size of aggregate often used in road construction. Fine …
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Below i am giving detail procedure and calculation for M30 grade and 10 mm size coarse aggregate as you given insufficient data for mix design i assume some data as per IS 456:2000 and IS 10262, Step 1 — Determination Of Target Strength Himsworth constant for 5% risk factor is 1.65. ftarget = fck + 1.65 x S = 30 + 1.65 x 5.0 = 38.25 N/mm2 Where,
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Below i am giving detail procedure and calculation for M30 grade and 10 mm size coarse aggregate as you given insufficient data for mix design i assume some data as per IS …
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6 1.Size of Coarse Aggregates: The size of the coarse aggregate depends on the use of the ...
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One bag of cement and other ingredients can produce = 400/2400 = 0.167 Cum of concrete (1:2:4) 01 bag cement yield = 0.167 cum concrete with a …
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In concrete slabs, the nominal maximum size should not exceed three-fourths of the minimum clear spacing of reinforcing bars or one-third of the section depth (ACI 302.1R). The …
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The suitability of the fine sand of zone 4 for use in reinforced concrete should be tested. For sands, the sand content of the mix should be low whose greater part is smaller than 60C micron. In general, finer the grading of the fine aggregate, higher should be the coarse/fine aggregate ratio. Typical values are shown in Table 4.23.
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Circular Column, Volume = πr 2 h= 3.141256 X (0.15) 2 X 5 = 0.35 m 3 . Concrete Ingredients Calculation. For Cement, Sand and Coarse Aggregate. This is a Volumetric Calculation. Assuming we need 2 m 3 of concrete for …
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Concept: A concrete of proportion a : b : c means the ratio of the weighted quantity of cement (a) to fine aggregate (b) to the coarse aggregate (c). The following proportion of the ingredients of concrete mix is used in arbitrary method of proportioning. Download Solution PDF Share on Whatsapp Latest PSSSB Junior Draftsman Updates
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Also, the results show that the compressive strength increases with increasing aggregate size up to 12.5 mm, while the concrete produced using 20 mm had greater compressive strength than those produced using 25 mm aggregate. This established the importance of ensuring that the right aggregate size is used in the production of concrete.
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Meddah, M.S., Zitouni, S. and Belaabes, S. (2010) Effect of Content and Particle Size Distribution of Coarse Aggregate on the Compressive Strength of Concrete. Construction and Building Materials, 24, 505-512. ... Size Variation of Palm Kernel Shells as Replacement of Coarse Aggregate for Lightweight Concrete Production. Humphrey Danso, Frank ...
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Considering a concrete mix proportion (by volume) of 1:2:4 i.e., Cement: Fine aggregate (Sand) : Coarse Aggregate is in the ratio of 1:2:4 by volume. Cement required = 01 bag = 50 kg ~ 36 liters or 0.036 cum Fine Aggregate required = 2*0.036 ~ 0.07 cum = 0.072*1600 = 115 kg Coarse Aggregate required = 4*0.036 ~ 0.14 cum =0.144*1450 = 209 kg
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To obtain the best mixture for dry-mix process shotcrete, the first step is to select a gradation that follows ACI 506R-05, "Guide to Shotcrete,"1 Gradation #1 (mortar gradation) or #2 (coarse aggregate gradation). According to ACI 506R-05,1 the coarse aggregate size should be larger than 1/4 in. (6.3 mm).
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Types of coarse aggregate and their size fine gravel -4 to 8 mm medium gravel- 8 to 16 mm coarse gravel -16 to 64 mm pebbles -4 to 64 mm cobbles -64 to 256 mm boulder – more than 256 mm Size of aggregate used in construction
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One bag of cement and other ingredients can produce = 400/2400 = 0.167 Cum of concrete (1:2:4) 01 bag cement yield = 0.167 cum concrete with a proportion of 1:2:4 01 cum of concrete will require Cement required = 1/0.167 = 5.98 …
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Explanation: the standard mix for concrete foundations in 3500# - 3/4" aggregate. This means that the concrete wiil yeild 3500 lbs per square inch and it contains 3/4" aggregate Barrows Contracting Inc Answer: 3/4 inch crushed stone Explanation: 3/4" is typical. QUALITY CONTRACTORS Get Free Quotes From Local Pros ProMatcher
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