### Concrete Block Calculator - Find the Number of Blocks ...

Just enter the dimensions of your wall project, and the concrete block calculator will figure out how many blocks are needed. For example, a 10′ x 10′ wall using a 16″ x 8″ x 8″ block will require an estimated 120 blocks and cost about $185 for material. If you''re building a retaining wall,...

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Average 28 days compressive strength of at least three 150 mm concrete cubes prepared with water proposed to be used shall not be less than 90% of average of strength of three similar concrete cubes prepared with distilled water.

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Length in inches x width in inches x height in inches will give you total cubic inches. 46,656 cubic inches in a cubic yard of concrete. Example: 137 inches long times144 inches wide times 5.5 .

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Aug 15, 2018· Its 1×8 wheeler load contains 17 to 20 tons of 75-40 mm crushed concrete, while the bulk bag weight is around one ton. The 75-40 mm crushed concrete is suitable for use in horse racing showground sub-bases as well as for drainage layers. With recycle concrete, you will often see numbers next to the grades.

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A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust.. Crushers may be used to reduce the size, or change the form, of waste materials so they can be more easily disposed of or recycled, or to reduce the size of a solid mix of raw materials (as in rock ore), so that pieces of different composition can be differentiated.

### Rebar Material Calculator - Inch Calculator

Rebar Material Calculator. ... Calculate concrete needed for a slab, footing, post, patio, or other masonry project and find the concrete cost. Estimate how many cubic yards and bags of concrete fill a space. Learn More . You May Find These Other Construction Calculators Helpful. Paint .

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If the ratio of cement, sand and crushed stone for making the concrete needed for a sidewalk is 2:3:4, how many cubic meters of cement is needed to make 4 .

### Ask an Expert: how much weight is needed to break concrete ...

Ask an Expert: how much weight is needed to break concrete block. Moderators: kgudger, ... If a block of concrete is just sitting on the ground and you try to crush it by putting weights on top, it can withstand tremendous forces. ... forces get turned into compression forces. A building made of reinforced concrete can actually have a bomb hit ...

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Dec 16, 2010· Demolition of concrete structures can be done in an eco friendly manner by use of EXPANDO which is a chemical. With EXPANDO there is zero noise and sound pollution. Non Explosive Cracking Agent. Reply Delete

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52 db. The attenuation dL at 250 Hz can be calculated as. dL = (52 db) + (- 5 dB) = 47 dB. The attenuation at 2000 Hz can be calculated as. dL = (52 db) + (7 dB) = 59 dB. Sound Transmission Loss - or Attenuation - for some typical Building Elements

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Mar 15, 2018· Mix ratio of M25 grade is 1:1:2 (cement:sand:coarse aggregates) Formula for calculating quantity of cement is, cement = (dry volume of the concrete x cement ratio)/(sum of the ratio) here, Dry volume of concrete = wet volume of concrete x 1.54 wet...

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Normally the concrete shall be 14 days old before the specimens are removed. It is preferred the concrete should be 28 days old for drilling cores.

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The concrete block pier at this job site toppled over because the contractor failed to properly reinforce it with steel bars surrounded by pea-gravel concrete in the hollow cores. Note the other obvious defect: No pre-cast concrete lintel over the window openings.

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The 40 is the compressive requirement of 40 N/mm² of a crushed 100m concrete core and the 50 is a compressive requirement of 50 N/mm² for a crushed concrete cube. Therefore using the method of testing using concrete cubes, the tested compressive strength should be .

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The only work done on-site is to make a concrete cylinder for the compression test. The strength is measured in Megapascals (MPa) and is commonly specified as a characteristic strength of concrete measured at 28 days after mixing. The compressive strength of concrete is a measure of the concrete''s ability to resist loads which tend to crush it.

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Rectangular Concrete Formula. When dealing in inches: convert inches to feet by dividing by 12. For example: pour a 25 ft. sidewalk 5 ft. wide and four inches deep. Note* we achieved 0.333 ft. by taking four inches and dividing by twelve. Another example: yardage .

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Calculator Use. Calculate and the answer is 0.08 cubic yards for one concrete tube Multiply 0.08 x 50 = 4 total cubic yards of concrete for 50 tubes Note that this calculation is the volume of your tubes only and does not account for any overflow or loss at the bottom of your tubes.

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Guided by a company-wide pledge to provide excellent customer service, Ewles Materials offers 42 years of in-field experience, a highly professional staff, five state-of-the-art crushing and recycling facilities, and a deep commitment to develop long term, mutually profitable relationships with our customers, local communities and the many ...

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Concrete mix estimation. Example calculation Estimate the quantity of cement, sand and stone aggregate required for 1 cubic meter of 1:2:4 concrete mix. Ans. Materials required are 7 nos. of 50 kg bag of cement, 0.42 m 3 of sand and 0.83 m 3 of stone aggregate.

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Decibel (dB) is the unit used to measure a sound''s strength. The decibel scale is not linear but logarithmic. This means that noise levels can''t be added directly like other numbers. On the decibel scale, the smallest audible sound (near total silence) is 0 dB. A sound 10 times more powerful is 10 dB.

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Schuster Concrete Batch Plant Locations. for Satellite views, street maps, or driving directions, use the Google™ Map links below: You may also contact us by using .

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6 Cubes of 150 x 150 x 150 mm size (the nominal size of aggregate does not exceed 38 mm) shall be cast, 3 for 7-days testing and 3 for 28-days testing. A set of. 3 cubes (specimen) average strength will be a sample. The individual variation of a set of 3 cubes should not be more than ± 15% of the average.

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and testing of concrete samples, no reliable method is available to evaluate the compressive strength of in-situ concrete precisely. The objective of the paper was to develop a different methodology for the determination of concrete compressive strength based on measured acceleration using Artificial Neural Network (ANN). The surface

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Nov 26, 2014· The problem was that David McAfee was not in the market for another crusher. To convince McAfee, the team demonstrated a QI240 PriSec mobile impact crusher. The demonstration and subsequent analysis showed that while the overhead of a second machine had been added to the crushing process, the cost per ton of crushed concrete decreased.

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Aug 16, 2015· how many tonne per m3 of 50mm crush gravel - BINQ... Dec 04, 2012 · Pit run gravel follows at 1.25 tons per cubic meter, . convert 1ton of 50mm of crushed rock to cubic meters. how many tonnes crushed rock per m3.

Get Price### A Simple Guide to Concrete Cube Testing

The concrete minimum compressive strength will be specified by the client/designer in a specific format. An example of this is given below: C40/50 The 40 is the compressive requirement of 40 N/ mm² of a crushed 100m concrete core and the 50 is a compressive .

Get Price### Concrete Calculator - Find Out How Many Yards You Need ...

Quickly calculate concrete slab and footing pours by entering the depth, width and length to find the number of cubic yards or bags of concrete needed for your project. Give these calculations to your ready-mix supplier or use them to estimate how many 40, 60 or 80 lb. bags of concrete to buy.

Get Price### Determination of concrete compressive strength: A novel ...

and testing of concrete samples, no reliable method is available to evaluate the compressive strength of in-situ concrete precisely. The objective of the paper was to develop a different methodology for the determination of concrete compressive strength based on measured acceleration using Artificial Neural Network (ANN). The surface

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of 2500 psi for structural concrete. Simply stated, no structural concrete can be specified with a strength less than 2500 psi. Other properties of the concrete can be significant for concrete exposed to freeze-thaw conditions, sul-fate exposure and chloride exposure (effects of chlorides on the corrosion of the reinforcing steel).

Get Price### Drilling in concrete, without a sound? -- ScienceDaily

The work will include the renovation of a ten- story concrete tower block. The plan is to carry out the work while the patients are in their rooms -- by renovating half the block at a time, and by moving the patients from one half of the building to the other.

Get Price### What happens when we hear a 1000-decibel sound? Does ...

I''m not sure we''d ever want to have something that loud on the Earth, and it also may not be possible to get sound that loud on Earth. The loudest sound ever so far was the Krakatoa volcano eruption in 1883. It was so powerful, the shockwave cir...

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