the best concrete mix for footings | what's the difference,the strength of concrete is measured in psi or pounds per square inch. typically a footing should be at least 3500 psi. to make the mix, add 1 part portland cement, 2 parts sand and 4 parts stone aggregate by volume. add in 3 quarts water per 80 pounds of dry concrete. aggregate should be between 1/2 –.grout for concrete masonry - ncma,the final water-to-cement ratio is significantly reduced, (ref. 8), a maximum specified grout compressive strength of 5,000 psi (34.47 mpa) for concrete masonry construction is applied. fly ash can also replace some of the portland cement in the grout mix,.
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5,000 psi concrete mix ratio when working to achieve a 5,000 psi or higher concrete mix, you should consult with a professional before commencing. this is especially true if your concrete will eventually be load-bearing in nature. this can ensure that the proper additives are included to maximize the mix’s strength.
28 days 5000 psi (34.5 mpa) slump range 2” – 3” mixing: one 80 lb. (36.2 kg) bag will require up to 4 quarts (3.7l) of water. thoroughly mix the contents of the bag with 3 quarts (2.8l) of water, adding the remaining water a little at a time if the mix is too stiff. adding too much water will weaken the mix and may cause cracking in the surface.
we measure a concrete’s compression in pounds per square inch (psi). most concrete compositions have a psi range of between 2,500 and 5,000. putting it into practice: let’s use this in an example, for m5 concrete, the mixing proportion would be 1:
concrete mix ratio: the strength of concrete mixture depends on the ratio in which these four ingredients are mixed. concrete mix ratio of - on mixing 1 part cement, 3 parts sand with 3 parts aggregate produces concrete with a compressive strength of 3000 psi.
bachelor's degree. 4,423 satisfied customers. can you tell me the concrete mix for one cubic yard 5000psi. can you tell me the concrete mix for one cubic yard 5000psi. the amount in pounds of stone,sand and cement to use read more.
you need a 5,000-psi mix with a 5% air content, and you need to be able to strip the products from the forms in 15 hours. historically, for similar mixes, you’ve used 555 pounds of cement and 120 pounds of fly ash per cubic yard of concrete. you typically use around 1,560 pounds of coarse aggregate.
3000 psi concrete mix ratio. to produce a 3000 psi cubic yard of concrete (27 cubic feet) the concrete mixture ratio is: 517 pounds of cement or (234kg) 1560 pounds of sand or (707kg) 1600 pounds of stone or (725kg) 32 - 34 gallons of water or (132l) this mixing ratio will give you a concrete mix that is strong, durable, and good for most concrete projects.
normal compressive strengths when concrete is properly cured are: 0.4 w/c ratio –> 5600 psi 0.8 w/c ratio –> 2000 psi. for example, if the water-cement ratio is 0.50 for concrete and cement is added is about 50 kg (weight of 1 bag of cement)
psi shift a concrete mix into the high-strength category? keep in mind that to comply with aci 318 chapter 5, a new mix (one without any historical backup informa-tion) needs to have an average compressive strength 1200 psi greater than specified for strengths between 3000 psi and 5000 psi, and 1400 psi greater than specified for strengths greater than 5000 psi. these
5,000 psi. used in special construction applications, including some large-scale commercial and industrial properties, 5,000 psi can withstand heavy impact and extreme wear and tear. these are general rules and each scenario and use will vary. a comparatively higher strength concrete can be used on any job—but may not always be called for.
the water to cement ratio ranges from 0.21 to 0.43 practically covering the wide range applicable to field practice. the void chosen for the mixes is fixed constant for all the trials at 15% in
here is a very rough idea of proportions for a 5,000 psi concrete mix: 1. 700 pounds of cement. 2. 1350 pounds of sand. 3. 1600 pounds of stone. 4. 35 gallons of water. if you feel you have received a satisfactory answer to your question, please click the rating button that is appropriate. experts are credited for each adequately rated answer they provide.
28 days, psi concrete concrete 7000 0.33 — 6000 0.41 0.32 5000 0.48 0.40 4000 0.57 0.48 3000 0.68 0.59 2000 0.82 0.74 table 9-3 (inch-pound units). relationship between water to cementitious material ratio and compressive strength of concrete strength is based on cylinders moist-cured 28 days in accordance with astm c 31 (aashto t 23).
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.
the 5000 psi, as has been stated might be needed for durability and then a maximum water/cement ratio comes along with that. but for structural computations, we are missing looking as shear and deflection. shear is typically based on the square root (sqrt) of the compressive strength. the sqrt of 5000 psi is 71 psi and the sqrt of 4000 psi is 63.
you will want a 5000 psi mix. aggregate (should not be more than 1/5 the thickness of the slab and no more than 3/4 of the thickness of the spacing.
concrete des for 5000 psi satisfac with results exhibiting an average strength of 5733 psi. both the slump and air content were within anticipated tolerances. conclusions & recommendations the mix design used in this investigation is satisfactory for field use provided rigid control be maintained relative to slump and air content.
super 5000 concrete mix description pakmix® super 5000 concrete mix is a specially formulated blend of portland cement, sand and gravel ideal for use where a thickness of 2' or greater is required. it is a high strength, 5000 psi, contractor grade formula. all ingredients are thoroughly premixed to ensure maximum strength and workability. simply add
preparing the right mix. depending on the application concrete mix design can be complex. the below table gives a basic indication of the mix ratios used for different purposes but
a w/c ratio of 0.040 and 5-1/2 sack specification with 900 to 1000 kg (2000 to 2200 lb) of aggregate and six per cent air with welded wire reinforcement is a durable exterior mix design, but this concrete is stiff and may need a water-reducer to aid placement. the strength will be around 35 n/mm 2 (5000 psi).
a concrete mix could achieve a 5,000 psi compressive strength, but may not perform well in service because of the type, quantity or proportions in which the other raw materials are used. for example, a mix could reach the required compressive strength while having a water-to-cement ratio
high range water reducing admixtures added at the site. •generally there is a 3- to 4-inch slump concrete at the job site. add 3 gallons of super plasticizer to the mix and you will get 7- to 8-in slump concrete without any water added. one hour later the concrete reverts to the original 3- to 4- inch slump.
re: concrete: 3500psi vs 5000psi. 06/12/2008 4:32 am. in terms of pros and cons: if stress is the defining factor, the 5000psi will make for less concrete but slightly higher reinforcment in kg/m3. if displacement is the defining factor, the two are quite similar in amount of concrete and reinforcement.
18.4.2 when the specified strength is 5000 psi or less, no individual strength test (average of two cylinder tests) shall be more than 500 psi below the specified strength, f ’ c let’s say a project is specified with f ’ c, minimum required compressive strength of 4500 psi with a maximum water cement ratio of 0.45.