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1. REQUIREMENTS a) Specified minimum strength = 20 N/Sq mm b) Durability requirements i) Exposure Moderate ii) Minimum Cement Content = 300 Kgs/cum c) Cement (Refer Table No. 5 of IS:456-2000) i) Make Chetak (Birla) ii) Type OPC iii) Grade 43 d) Workability i) compacting factor = 0.7 e) Degree of quality control Good 2. […]
It looks like you are using m20 grade mix with extra sand. If you follow that mix proportion then to calculate use this following method. Total ratio = 1 + 2 + 3 = 6 Cement required = (1/6) x 1.5 = 0.25 cu.m (refer the post to change cu.m to bags) Sand = 0.25 x 2 = 0.5 cu.m Aggregate = 0.25 x 3 = 0.75 cu.m
M20 has a compressive strength that gets added up to 28 days. PROPERTIES OF THE M20 GRADE CONCRETE: The M20 Grade Concrete comes in a mix ratio of 1:1.5:3.1 cement.1.5 sand and three aggregate. TheM20 stands for the mixture of aggregate, sand, and cement prepared so as the whole cement concrete cube of size becomes 154 cm by 15cm by another 15 cm.
So, Sand required = 0.072*1600 = 115 kgs. and Aggregate required = 0.144*1450 = 209 kgs. Considering water/cement (W/C) ratio of 0.55. We can also arrive at the Water required = 50*0.55 = 27.5 kg. So, One bag of cement (50 Kgs) has to be mixed with 115 kgs of Sand, 209 Kgs of aggregate and 27.5 kgs of water to produce M20 grade concrete.
Strength of PCC is defined as compressive strength after 28 days, expressed as M15, M20, where M stands for Mix and 15 stands for 15 N/mm 2 (n/mm 2 must be read as 'Newton's per millimeter Cubic') compressive strength at 28 days. The proportions of materials (cement, sand, coarse aggregate) for nominal mix/design mix concrete that are normally used are 1:3:6 or 1:4:8.
3.2.2.1. Ultra sonic pulse velocity. The ultra-sonic pulse velocity results of 28 day cured M20 concrete with varying percentages of replaced used foundry sand is shown in Fig. 5. The results of control (0 wt% UFS) and trial mixture (20 wt% UFS), were 4045 …
Answer (1 of 75): Good question indeed. This is how the grade of concrete is specified. This number speaks about the strength of concrete. It indicates the minimum compressivee strength which must develop after 28 days of casting. The strength is expressed in Newton per square milimeters. So ...
Harshlata R. Raut, Ashish B. Ugale:- Reported that in 50% the replacement of artificial sand with admixtures then it increases the compressive strength by 12.18% and in case of the compressive strength increases by 18.265 when natural sand replacing with artificial sand increase in proportion of artificial sand the concrete mix becomes harsh.
Muhit et al. determined that passing from 200 mm sieve is used as cement replacement whereas retaining from 100 mm sieve is used as sand replacement. Cement was replaced with stone dust in percentage of 3, 5, and 7 percent. Similarly, sand was replaced with stone dust in percentage of 15 to 50 with an increase of 5 percent.
an attempt has been made to experimentally study the properties of concrete and mortar by replacing the natural sand with artificial sand. The results have shown that the natural sand can be replaced with the artificial sand to produce concrete and mortar of satisfactory strength and durability. ...
sand 0%, 20%, 40%, 60% 65% 70% 75% 80% and by artificial sand for M20 M25 M30 M35 M40 grades of concrete are presented. 94 Rajendra P. Mogre& Dhananjay K. Parbat
Further Artificial Neural Network Analysis is performed to validate the experimental ... sand in concrete with the proportion varying from 2%– [8]. Concrete with PET 15% ... for M20 grade of concrete. The proportion of the concrete mixture is 1:1.5:2.5 with w/c ratio 0.44. To review the
General Steps Involved in Mix Proportioning. Step 1. Choice of Slump. Stiffest possible consistency that can be easily placed and compacted without segregation. Pumping are typically designed for 100 mm to 150 mm slump. Step 2. Choice of Max. Size of Aggregate. For given volume of coarse aggregate,
sand is by crushing natural stone to get artificial sand of desired size and grade .The use of artificial sand will conserve ... 5. M20 + M-Sand 28 0.861 0 0.837 Table-3 a). ... with different proportions of % M-sand at 3,7 and 28 days 0 5 10 15 20 25 30 35 40 45 50 0% 25% 50% 75% 2) % of replaced M-sand 3days 7days
Optimum Replacement of Natural Sand with Artificial Sand in ... Dec 31, 2013 ... For the purpose of experimentation concrete mixes are design for M20, M25, M30, M35 and M40 grades by 0 to 100 % replacement with...
Artificial Intelligence (ANN) Madhav Shrivastav, Prof. Sourabh Dashore ... sand and blue granite metals. Cement in combination with ... Mix Proportions M20 grade. x m 3) 3 e a m)) m 3)) 1 20 GP0 0 5 432 186 56 2 10 2 5 8 186 56 3 20 4 65 186 56 4 30 6 5 4 186 56 5 8 5 2 186 56 1. Experimental plan:
Estimated water content = 186+ (3/100) x 186 = 191.6 kg /m 3 Step 4 — Selection of Cement Content Water-cement ratio = 0.5 Corrected water content = 191.6 kg /m 3 Cement content = From Table 5 of IS 456, Minimum cement Content for mild exposure condition = 300 kg/m 3 383.2 kg/m 3 > 300 kg/m 3, hence, OK.This value is to be checked for durability requirement from IS: 456.
The use of this sand (also called artificial sand, M-Sand, Robo Sand etc.,) is picking up in India in major cities. ... (grades of M20, M30) and Cement mortars (ratio 1:4 and 1:6).Tests were conducted to ... Proportion Flow (%) Water-cement ratio Compressive Strength (MPa) River Sand Manufactured Sand
Using d ifferent proportion of this robo sand along with sand the required concrete mix can be obtained. ... M20 1:2:4 per cu m aggregate -1320kg Fineness modulus of Natural sand = 278 ÷ 100 = 2.78 Fineness modulus of Robo/Artificial sand = 2.81 ÷ 100 = Workability Good 2.81 0.49 + free water 182 liters per cum. W/C Ratio Of concrete TABLE 3 ...
Mortar is mixture of cement, sand, and water. They are mixed in the fixed proportion to get the desired bond between masonry brickwork. The preparation of cement mortar 1:3 means one bag of cement for three bags of sand and add water to the cement whose ratio is 40% to 70% percent of the weight of the cement. Procedure for brickwork
are designed for M20 and M25 grade by replacing natural sand with artificial sand at different replacement levels of 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% and . Approximately 80% of total volume of concrete is made up of aggregates. Aggregates characteristics i.e. size, shape,
The major materials needed in the preparation of concrete blocks are portland cement, sand, aggregate (stone), and water. You can calculate the concrete mix ratio by entering the width, height and depth of the ratio in this concrete mix ratio calculator to know the total volume, sharp sand, gravel and water.
Traditional way of mix proportion specified in terms of fixed ratios of Cement : Sand : coarse aggregate (In general by volume) 4 2.5 •Useful for small works •Useful for routine concrete construction •Limited up to M20 grade •Requires high cement content
Concrete mix were designed in accordance with IS 10262-1982 and IS 456-2000 by assuming good degree of quality control and moderate exposure conditions. The concrete mix is designed for M20 grade with replacement of natural sand by artificial sand and partial replacement of coarse aggregate by steel slag with 0% 10% 20% 30%.
detrimental to durability of steel in concrete whereas Artificial sand has no silt or organic impurities. Mix design has been done for M20 and M25 grade concrete. Various tests were conducted and compared with concrete without natural sand. It is found that compressive and flexural strength of artificial sand is more than natural sand.
reinforcing the concrete. Concrete mix was prepared with natural sand as a normal mix and mix with optimum percentage of natural sand (35%) & artificial sand (65%) was used. For the purpose of expe rimentation concrete mixes were designed for M20, M30 and M40 grades. Due to
Answer (1 of 3): Grading in sand represented by upward variation in grain size in a vertical manner withim single bed.. it denotes variation or flucatution in energy condiition of trasporting agent in single event of any depositional environment. grading is of 2 type Normal grading- decrease in...
M20 (1 cement :1.5 sand :3 stone/brick aggregate). To determine the proportions you have to perform mix design, for this you have to find out the sp.gr. of cement, CA, FA, and water cement ratio ...
2.1.2 Mix Proportions Adopted: The concrete of M20 grade was designed using the IS Code method (IS: 10262-1982) [6] of mix design and proportions were obtained after applying necessary corrections to suit ... sand by artificial sand 0 20 40 60 80 100 Area of crack 13.33(mm2) 2.59 2.22 1.21 3.23 5.22
Fig. 1 Artificial Manufactured Sand V. EXPERIMENTATION A. Properties of the materials Cement, coarse aggregates, natural sand and manufactured sand were tested for their physical properties which are stated above. The materials tested are constituted in concrete of both M20 and M30 mixes in all the proportion of replacement of natural sand by
M Sand price ranges from Rs.35 - Rs.45 per cubic feet in Bangalore. River sand price ranges from Rs 60 - 80 per cubic feet in Bangalore. Adulteration. The probability of adulteration is less. High probability of adulteration since filtered sand (a type of pre-washed sand which contains high silt contents) are mixed together.