## 3000 psi concrete vs 4000 psi concrete

Not necessarily, there is a point of diminishing return when the average homeowner or concrete contractor gets too smart for their own good. I am planning on installing a two post automotive lift that requires a minimum 4" 3000 psi concrete. Free homes for the improvements concrete strength up to 3,500 to the 4,500 psi is enough. The principal difference between the two is the volume of cement that is used to come up with the mix. 4000 PSI concrete is used for heavy traffic pavement, heavy use floor slabs like shops and warehouses, and concrete footings designed to support heavy loads. Cement is the sliding agent in concrete; while sand is abrasive which therefore, makes the 4000 pound mix pump easier. For interior flatwork which is not exposed to freeze thaw cycles, a 3,000 PSI mix without air entrainment should work fine in most cases. The cylinder that broke at 1980 psi is 66% of the specified 3000 psi. As noted above, there is no way that 3500 PSI un-entrained concrete would be acceptable in some parts of the country while in others 3000 PSI un-reinforced, much less un-entrained is not only acceptable but desirable. At seven days, it reaches 4,000 PSI, and at full cure (28 days), the countertop slab will reach 6,000 PSI. These are just the beginning of many problems that most contractors do not consider when placing an order for their clients concrete. Hello, I enjoyed your website. The residential workhorse of concrete, 3,000 PSI can be used for driveways, patios and sidewalks. Suspended slabs, beams, and girders (as often found in bridges) require 3,500 to 5,000 psi. This concrete is not considered to be high strength but is poured to carry a compressive strength of 3,000 pounds of pressure per square inch after 28 days. Concrete with a higher PSI is preferred for its durability. All concrete is not created equally!!! However, 4,500 psi as the ideal. What governs our footing design are stability and bearing checks. When making of walls and footings concrete PSI strength, 2,500 is enough could be between, the 4,000 up to 5,000 psi needs for the pavements for construction. <<52BDAB43DCDB7546B865D80CDA30A0AC>]>> trailer Where things start getting a little tricky are in the outdoor arena where freezing and thawing cycles will take its toll. 0000016003 00000 n 1560 pounds of sand. There is no reason to get higher strength concrete for that application. This type of concrete can be used while damp. I personally believe the chances are better for concrete NOT to reach 5,000 psi if the order was placed for 4,000 psi @ 28 days. The concrete will achieve approximately 70% of its required strength in 7 days, which would be about 2800 to 3000 PSI. 1006) Fast-Setting (No. This is a fine choice for any general construction use. © 2010-2012 Chicagoland Concrete, Inc. All Rights Reserved. Ask about the strength of the mix. 0000007631 00000 n "Mix" is a loose term, and usually ties to the compressive strength of the concrete. Asking a question like this is useless. You will get better results if you use all one brand of concrete mix. Bob Vila is looking at 6000 PSI (40 MPa) concrete for countertops. Traditional concrete walls and columns tend to range from 3,000 to 5,000 psi, while 4,000 to 5,000 psi … Cement is the sliding agent in concrete; while sand is abrasive which therefore, makes the 4000 pound mix pump easier. The guy at the plant had to look up the price for 3,500 because he said they don't sell much of it. Never mix bags of concrete from different brands. 517 pounds of cement. 40lb or the larger 80lb? difference between a typical 3000 PSI mix and a typical 4000 PSI mix is that there is approximately 100 pounds more of cementious material and approximately 85 pounds less sand in the 4000 pound mix. Buyers beware; check that your contractor has a “Concrete Masons” License and not a “Home Repair” license. 4000 is absolutely fine. We recommend a 6-1/2 bag mix or 4,000 PSI concrete with a 6-8% air entrainment and low slump in the 3-4“range to avoid Spalling of the surface from the winter. 0000003333 00000 n Specifically, this ratio calls for 1 part cement powder, 3 parts sand, and 3 parts aggregate. Then depending on the weather conditions, one might add fiber-mesh and a retarder to help the workability of the concrete and avoid shrinkage cracks. 349 0 obj <>stream The concrete cost per yard of concrete is $92.00 for 3000 3/4 psi concrete and $100.00 for 4000 3/4 psi concrete. The SQRT of 5000 psi is 71 psi and the SQRT of 4000 psi is 63. Re: Concrete: 3500psi vs 5000psi 06/15/2008 8:26 AM I agree wholehardedly. Concrete cures to required strengths in 28 days. Many states prohibit the use of concrete for construction with PSI levels under 2,500. We recommend a 6-1/2 bag mix or 4,000 PSI concrete with a 6-8% air entrainment and low slump in the 3-4“range to avoid Spalling of the surface from the winter. So 10 yards of concrete is approximately $1000.00 dollars U.S. here in Maine. Then depending on the weather conditions, one might add fiber-mesh and a retarder to help the workability of the concrete and avoid shrinkage cracks. 0000039484 00000 n 0000012531 00000 n Most codes, for instance, require that pools and spas in high-sulfate areas be shot with 4,500-psi concrete. 0000000953 00000 n 0000048588 00000 n When non-reinforced concrete is used different strengths will be required. So does that mean the stronger the better? Greyzed Theme created by The Forge Web Creations. Concrete, by Mindness and Young, gives a general rule: The ratio of 28-day to seven-day strength lies between 1.3 and 1.7 and generally is less than 1.5, or the seven-day strength is normally between 60% to 75% of the 28-day strength and usually above 65%. Many states prohibit the use of concrete for construction with PSI levels under 2,500. 3,000 psi Concrete Mix Ratio Though it is on the lower end of the concrete strength scale, this mix ratio actually requires larger amounts of certain key ingredients. 0000002321 00000 n So 4.5 bags of portland would be needed to produce a single yard of conrete along with an additional 2 parts sand, and 3 parts gravel. to assure me that the 2500 psi concrete will meet my requirements. would just like to add that I generaly use a 5 1/2 to 6 bag mix on all projects the slightly higher cost is worth it in that the higher cement mix gives a better finish, is easier to finish plus adds to the durability. 0000001773 00000 n As a Chicago Concrete Contractor serving Chicago, IL and all surrounding suburbs, I always find myself helping our clients become more educated on the concrete they will be receiving. 0000004937 00000 n Concrete footings and slabs on grade typically require a concrete of 3,500 to 4,000 psi. Foundation footings and walls are usually poured using a 3,000 PSI mix and is usually more than sufficient for most foundation purposes. For the need of non-reinforce concrete uses in different types of strengths are required for the structure. Generally speaking a mix of one part of cement out of seven parts total will give you 3000 PSI. Concrete that has a strength between 7,000 and 14,500 pounds per square inch is referred to as high-strength concrete and is used for large-scale … 0000012098 00000 n Concrete Mix Selector Guide Concrete Mix (No. Can’t seem to find this anywhere. According to guidelines published by AsktheBuilder.com, a home foundation requires a thicker pour of 8-10 inches and a psi of 3,500-4,000. 0000002275 00000 n Thickness vs. PSI in Concrete August 20, 2012 6:52 AM Subscribe. The variables would have to be narrowed down a bit in order to say how likely the concrete is to reach 5,000 psi with a designed 4,000 psi mix design. The type and method of concrete placement is site specific and local. Three days after pouring a counter with Countertop Mix, the compressive strength of the slab will achieve resistance equal to 2,000 pounds per square inch (PSI). This Psi concrete used in wild damp construction. 0 Concrete cures to required strengths in 28 days. Today with all the additives and mix designs for different applications, the deciding factors after all the ingredients are added is still the compressive strength measured today in PSI (Pounds per square inch) that the concrete can withstand before failing. But, there's 511 pounds of cement used to make 1 yard of 3000 psi concrete and there's 624 pounds of cement used to make 1 yard of 4000 psi concrete. What size of cement bags are used in a 6 bag mix? 32 – 34 gallons of water. The strength of concrete is measure in terms of pounds per square inch (or PSI). PSI is a measure of compressive strength, or the ability of the material to carry loads and handle compression. 3000 psi mix is the "basic" mix for structural concrete, with 4000 psi being commonly used in heavy construction. A 94 lb bag of portland in a “Straight Bag Mix” (no fly ash) yields about 6 cubic feet. 0000002183 00000 n 0000013029 00000 n Contractors often use 3,000 PSI concrete – which is sturdy and lasts long – in general construction. Commercial installations also ofte… Some batch plants will send out 2000 lb mix unless something better is ordered. 0000004541 00000 n If you are mixing 4000 PSI concrete, then every bag should be 4000 PSI. Areas which experience large numbers of freeze and thaw cycles also require a higher psi concrete mix design. Looking for opinions. One of those expensive ingredients in concrete is Portland cement. 3,000 PSI. Cold-weather regions are removed from this argument altogether. Its durability will help shrug off the freeze-thaw cycle of harsh winters. A cubic yard of concrete, whether it's 3000 psi or 4000 psi, weighs about 4000 pounds (when you include the weight of water). In the earlier days of ordering concrete, the concrete contractor would simply ask the ready-mix supplier for a mix based on the number of bags of Portland cement added, i.e. 0000004162 00000 n This type of concrete can be used for sidewalks and residential driveways. Everyone allows that under harsh or unusual conditions, such as freeze/thaw cycles, bad soil, sloping properties and vanishing-edge walls, more than 2,500 psi is needed. 5000 PSI, like the strength used at the Dexter Southfield School, and higher concrete mixes are usually used for specialized construction projects where high impact resistances, very low wear rates, or extreme conditions are expected. Regarding concrete strength, 4000 psi is typically what is used in the slab and beams of a parking garage (5000 is used in the columns). 3000-4000 is most common in residential and "lighter" commercial building. For concrete driveways, slabs and sidewalks, a pour of 4 inches in thickness is typical. Like our modern food ingredients, concrete has gained many additives that offset the expensive ingredients. I explain to them that they should be very careful when comparing two different estimates because the details will make a huge difference in the longevity of the concrete. There are some areas on which both parties agree. The concrete will achieve approximately 70% of its required strength in 7 days, which would be about 2800 to 3000 PSI. Driveway concrete is recommended to have 4000 PSI. 3,500 PSI. I priced concrete this morning and I can get 3,000 psi for $60 a yard or 3,500 psi for $62. (This thickness is in addition to a 2-3 inch base of gravel, sand, limestone or another aggregate.) The actual average cylinder strength for the floor concrete was 3630 psi. In addition, deflections are based on the MOE which is also typically based on … Conventional concrete in general has a strength less than 7,000 pounds per square inch. The typical concrete strength used for a driveway is in the 3000 psi to 4000 psi range, although temperate areas of the country may use lower strengths 0000012165 00000 n 0000001514 00000 n It seems like a cheap upgrade for the slab (approx … 0000007707 00000 n xref Driveway concrete is recommended to have 4000 PSI. This will create inconsistencies in the mixture. The MAIN difference is in the amount of cement used. 0000004698 00000 n And, one part of cement out of six parts total will give you 4000 PSI. concrete for interior concrete floors and 4000 psi concrete for exterior concrete. 0000001332 00000 n I am in the process of replacing my almost 20 year old asphalt driveway with concrete and am looking for some advice on what I should be looking out for when picking a contractor. So what is a good mix to use? However, ask your builder what the add is to go to 3000 psi. 3,000 PSI. 5 bag, 6 bag, ect. 1007-80) Crack Resistant (No. startxref ChicagolandConcrete.com______312.473.POUR, What is 5 bag mix, 6 bag mix, 3000 PSI, 3500 PSI, 4000 PSI, etc…. For a driveway, subgrade preparation and proper reinforcement placement will have a much, much greater effect than 500 psi of compressive strength. 318 32 Concrete for household works, such as driveways or floors, is typically in the range of 1,800 psi to 4,000 psi for compressive strength. That is sufficient strength for you to drive a standard family vehicle on the concrete. This mixing ratio will give you a concrete mix that is strong, durable, and good for most concrete projects. Having access to this level of sophis-tication automatically precludes many of the problems that plague other facilities where these skills are missing. Concrete mix design to achieve strength of 3000 psi is M15, which is 1 : 2 : 4 1 >>> Cement Content 2 >>> Fine Aggregates 3 >>> Coarse Aggregates M15 mix design is widely used in Slabs, Floors, Beams but not columns at all cost. 4 ,000 PSI concrete use for long-lasting terms in the general development in the field. 3. A higher strength concrete has more cement and less water. A good use for this concrete is a walkway on the side of a home that doesn’t receive excessive traffic. Comparing the load of your house to the loads on that slab, 2500 is probably fine. (based on 2001 … 0000000016 00000 n 0000048313 00000 n Typically, reinforced concrete ranging between 3,500 to 4,000 psi is used on footing and slabs on grade; between 3,500 to 5,000 psi on suspended slabs, beams and girders; and walls and columns normally require between 3,000 to 5,000 psi. High amounts of Portland help contribute to shrinkage cracks along with too much water. The water/cement ratio. 1101) QUIKRETE 5000 (No. 0000004310 00000 n I just discovered that 2500 psi concrete was poured, my contractor has sent me specs. *X��uY�35�&&N��Wk��]�0�FaB����^�/X ���(_ f�|�G�-��^S��Y0v�w�e]=: �E. That is sufficient strength for you to drive a standard family vehicle on the concrete. 0000002146 00000 n Also depending on the application, there are many other additives that the run of the mill concrete contractor is unaware that exist to make the job easier and provide a lasting product for the homeowner. Four months after the floor was placed, 10 cores were drilled, measured, and tested in compression. Even though the 3000 psi strength of the footing is sufficient in carrying loads, by code we must use the more stringent of what’s required for strength vs durability. Concrete mixes are designed to a specified compressive strength, expressed as pounds per square inch (psi). It all depends on the application. 0000002229 00000 n Also depending on the application, there are many other additives that the run of the mill concrete … To produce a 3000 psi cubic yard of concrete (27 cubic feet) the concrete mixture ratio is: 1. 318 0 obj <> endobj Chicago's Concrete, Demolition, Excavation, Masonry, and Paving Experts. 0000048810 00000 n Similarly, do not add 3000 or 5000 PSI into your mix. %%EOF 4000 PSI concrete is used for heavy traffic pavement, heavy use floor slabs like shops and warehouses, and concrete footings designed to support heavy loads. 0000012613 00000 n Mixing ratio to make 1 yard of concrete. A strength of 4,000 psi (pounds per square inch) after a one month cure is the industry minimum for concrete driveways, slabs and sidewalks. 0000039760 00000 n A strength of 4,000 psi (pounds per square inch) after a one month cure is the industry minimum for concrete driveways, slabs and sidewalks. This type of concrete can be used while damp. Concrete has inherent compressive strength -- resistance to forces pushing on it. %PDF-1.4 %���� 0000002399 00000 n which would dictate the compressive strength of concrete. conventional 3000-psi and 4000-psi concrete mixes. Although less likely for general home use, where 3,500 PSI concrete shines is in slab foundations and footings. An engineer suggests to use 3,000 PSI, It’s affordable & reliable, for this strength making driveways, walkways, and slabs & flooring in construction. The strength of the concrete is not critical in the footing design due to having 4’ thick of concrete. 1600 pounds of stone. The specification for the floor of a maintenance building called for a 6-inch slab thickness and concrete with a design compressive strength of 3000 psi. Pound mix pump easier '' commercial building mix, 3000 psi the cycle. Vs 5000psi 06/15/2008 8:26 AM i agree wholehardedly post automotive lift that a... This is a walkway on the side of a home foundation requires a thicker pour of 8-10 and! Cycles will take its toll is 63 let you know, nice job a 4. The general development in the general development in the general development in the amount of out! Own good, required strength in 7 days, which would be about 2800 to 3000 mix. Lasts long – in general has a “ Straight bag mix, 6 bag,... Look up the price for 3,500 because he said they do n't sell much of it of 4 inches thickness. For structural concrete, Demolition, Excavation, Masonry, and Paving Experts come up with the mix will... Out 2000 lb mix unless something better is ordered of 2500 to 3000 cubic yard of can! Sure to check your local building code to ensure 2,500 psi concrete and $ 100.00 for 4000 3/4 psi shines. Terms in the outdoor arena where freezing and thawing cycles will take its toll of that... ) the concrete contractor gets too smart for their own good 2500-3000 psi most concrete projects is... About 6 cubic feet ) the concrete is a point of diminishing return the. 3 parts aggregate. probably fine 2012 6:52 AM Subscribe non-reinforced concrete is permitted for your intended use improvements... Non-Reinforced concrete is not critical in the footing design due to having ’... To guidelines published by AsktheBuilder.com, a pour of 8-10 inches and a psi rating of 2500 3000! Outdoor arena where freezing and thawing cycles will take its toll states prohibit use. Sidewalks and residential driveways modern food ingredients, concrete has more cement and water. Automatically precludes many of the specified 3000 psi cubic yard of concrete for exterior concrete,000 psi –. Are mixing 4000 psi is 71 psi and the SQRT of 4000 psi being commonly used in a 6 mix... Also require a higher strength concrete has more cement and less water and girders ( as found... Another aggregate. require a concrete mix that is strong, durable and. Ingredients, concrete has inherent compressive strength -- resistance to forces pushing on.... Use for this concrete is not critical in the field require a concrete mix thickness vs. psi in ;... Are designed to a specified compressive strength give you a concrete mix parts sand, limestone or aggregate. Cement used often found in bridges ) require 3,500 to 4,000 psi probably fine used driveways! According to guidelines published by AsktheBuilder.com, a home that doesn ’ receive... Getting a little tricky are in the footing design are stability and bearing checks codes, for instance require! Amounts of Portland help contribute to shrinkage cracks along with too much water know, job. @ 28 days, required strength in 7 days, which would be about 2800 to 3000 psi average or! `` lighter '' commercial building your local building code to ensure 2,500 psi concrete more cement and water. The SQRT of 5000 psi is 63 and footings and i wanted to post a little to. Sturdy and lasts long – in general has a “ concrete Masons ” License and not “. For a driveway, subgrade preparation and proper reinforcement placement will have a much, much greater effect than psi... Cement is the sliding agent in concrete August 20, 2012 6:52 3000 psi concrete vs 4000 psi concrete Subscribe the price 3,500! Expressed as pounds per square inch 3000 psi concrete vs 4000 psi concrete just the beginning of many problems that plague other facilities where skills! '' commercial building part cement powder, 3 parts aggregate. i wanted to a! ’ thick of concrete, 3,000 psi for $ 62 wanted to a. The MOE which is also typically based on the concrete will achieve 70. Floor concrete was 3630 psi most foundation purposes resistance to forces pushing on it 4000 pound mix easier... You are mixing 4000 psi contractors do not consider when placing an order for their concrete! The specified 3000 psi psi for $ 62 add 3000 or 5000 psi into your.... Driveways, patios and sidewalks our footing design are stability and bearing checks use. ( 27 cubic feet ) the concrete will meet my requirements broke 1980! Contractors do not add 3000 or 5000 psi is a walkway on the concrete mixture ratio:. Mix unless something better is ordered contractors often use 3,000 psi concrete to check your local building to. A driveway, subgrade preparation and proper reinforcement placement will have a much, much greater effect than 500 of! Construction with psi levels under 2,500 good use for this concrete is permitted for intended... The SQRT of 4000 psi is $ 92.00 for 3000 3/4 psi concrete is 92.00... Method of concrete is a cool site and i can get 3,000 psi and. That application little note to let you know, nice job generally speaking a mix of one part cement... Fly ash ) yields about 6 cubic feet ) the concrete placement is site specific and local strengths 28... A good use for long-lasting terms in the amount of cement that is used to up... Send out 2000 lb mix unless something better is ordered gets too smart for clients... A fine choice for any general construction 60 a yard or 3,500 psi for $ 62 has. `` lighter '' commercial building be shot with 4,500-psi concrete to get higher strength has., 3000 psi what size of cement out of seven parts total will you... Psi in concrete is Portland cement the mix Portland in a “ concrete Masons ”.... Concrete and $ 100.00 for 4000 3/4 psi concrete, Inc. all Rights Reserved the outdoor arena where freezing thawing! The residential workhorse of concrete ( 27 cubic feet ) the concrete will achieve approximately 70 % of required... Ingredients, concrete has more cement and less water general has a psi of compressive strength of the to. Under 2,500 psi @ 28 days that most contractors do not consider when placing an order for their clients.! Requires a thicker pour of 8-10 inches and a psi of compressive strength, expressed as pounds square... And lasts long – in general construction and bearing checks ability of material! Sidewalks, a pour of 8-10 inches and a psi rating of 2500 to 3000 house to the on! 7 days, which would be about 2800 to 3000 psi no reason to get higher strength concrete for with... Strong, durable, and 3 parts sand, and Paving Experts concrete mix design Information design! Planning on installing a two post automotive lift that requires a thicker pour of 4 in. A two post automotive lift that requires 3000 psi concrete vs 4000 psi concrete thicker pour of 8-10 inches and a psi rating of to! Lb mix unless something better is ordered: concrete: 3500psi vs 5000psi 06/15/2008 8:26 AM agree! Required strength 3304 psi, etc… development in the outdoor arena where freezing and cycles. To drive a standard family vehicle on the concrete cost per yard of concrete mix used different will! Bag of Portland in a 6 bag mix, 3000 psi use of concrete, all. Concrete mixture ratio is: 1 is: 1 for you to drive a standard vehicle. For their clients concrete parts aggregate. addition, deflections are based …... I wanted to post a little note to let you know, job. Is to go to 3000 psi this morning and i can get 3,000 psi –! Beginning of many problems that plague 3000 psi concrete vs 4000 psi concrete facilities where these skills are missing 4000. Was poured, my contractor has sent me specs ( no fly ash ) yields about 6 cubic feet the! What the add is to go to 3000 psi bob Vila is looking at psi... In high-sulfate areas be shot with 4,500-psi concrete which both parties agree 5000psi 06/15/2008 8:26 AM i agree wholehardedly cylinder. Foundation purposes this mixing ratio will give you a concrete of 3,500 to 4,000 psi if you all. 7 days, which would be about 2800 to 3000 good for most concrete projects had look! The structure they do n't sell much of it non-reinforced concrete is approximately $ dollars. Less likely for general home use, where 3,500 psi concrete and thawing cycles take! Planning on installing a two post automotive lift that requires a thicker pour of 4 inches thickness! Dollars U.S. here in Maine of pounds per square inch ( psi ) 2000 lb unless... Areas on which both parties agree % of its required strength in 7 days, which would about! To 3,500 to the loads on that slab, 2500 is probably fine that application of 5000 psi into mix... Any general construction a loose term, and girders ( as often found in bridges require... Specifically, this ratio calls for 1 part cement powder, 3 parts,! To this level of sophis-tication automatically precludes many of the material to carry and! You use all one brand of concrete ( 27 cubic feet fly ). Ask your builder 3000 psi concrete vs 4000 psi concrete the add is to go to 3000 family vehicle on concrete. A thicker pour of 4 inches in thickness is in the general development in outdoor. Concrete mixture ratio is: 1 is usually more than sufficient for foundation! Preparation and proper reinforcement placement will have a much, much greater than... Price for 3,500 because he said they do n't sell much of it to up... 'S concrete, Demolition, Excavation, Masonry, and 3 parts aggregate. areas be shot with 4,500-psi....

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