How much is a cubic meter of poured plain concrete? C15!

1. The strength grades of ordinary concrete in construction projects are: C10, C15, C20, C25, C30, C35, C40, C45, C50, C55, C60, etc.;

1. Strength grade C15: 270 yuan cubic meter of pumped concrete, 260 yuan cubic meter of non-pumped concrete;

2. Strength grade C20: 290 yuan cubic meter for pumping concrete, 280 yuan cubic meter for non-pumping;

3. Strength grade C25: 310 yuan cubic meter for pumped concrete, 300 yuan cubic meter for non-pumping;

4. Strength grade C30: 330 yuan cubic meter for pumping concrete, 320 yuan cubic meter for non-pumping;

5. Strength grade C35: 350 yuan cubic meter for pumping concrete, 340 yuan cubic meter for non-pumping;

3. The cost of each additional strength grade is about 20 yuan (sometimes it also depends on the amount of concrete used).

Fourth, at present, the construction site rarely uses self-mixed concrete, basically using commercial mixing (convenient, fast, continuous), commercial mixing and self-mixing comparison, commercial mixing is about 40 yuan higher than self-mixed concrete.

5. For example: the concrete of the strength grade C15 is 260 yuan cubic meters, and the self-mixing is 220 yuan cubic meters (man, material, machine).

Jinan City, Zhangqiu City, C15 commercial mix** 260 yuan per party.

The word C15 concrete may be less heard by many people, what does it mean, and what kind of characteristics do it have? Today I will introduce you to the relevant knowledge, I hope it will be helpful to you, through the following knowledge, you can better understand the relevant knowledge, and I also hope to read the relevant content to enrich your knowledge treasure house. The strength grade of concrete refers to the compressive strength of the concrete.

The strength grade of concrete should be divided by the standard value of the compressive strength of the concrete cube. The symbol c is used with the standard value of the compressive strength of the cube (in n mm 2; or MPA). According to GB50010-2010 "Code for Design of Concrete Structures", ordinary concrete is divided into 14 grades, namely:

c15，c20，c25，c30，c35，c40，c45，c50，c55，c60，c65，c70，c75，c80。For example, C15 concrete is concrete with a standard value of 15MPa for compressive strength. The strength grade of concrete is divided according to the standard value of the compressive strength of the cube specimen.

The standard value of the compressive strength of the cube specimen refers to a value in the overall distribution of the compressive strength measured by the standard test method with the standard test method at the age of 28 days for the cube standard specimen with a side length of 150 mm, and the percentage of strength below this value shall not exceed 5%, that is, the guarantee rate is 95%.The strength grade of concrete is expressed by the number of megapascals of the code C of concrete and the standard value of the compressive strength of the cube specimen. The factors affecting the strength grade of concrete are mainly related to cement grade and water-cement ratio, aggregate, age, curing temperature and humidity.

The quality of concrete is closely related to the type, amount and mode of admixture, and it is also one of the important factors affecting the strength of concrete. The strength of concrete can only ensure normal development under the condition that temperature and humidity are suitable, and it should be maintained in accordance with the provisions of the construction code. The temperature has a certain influence on the development of concrete strength.

In summer, it is necessary to prevent exposure to the sun, and make full use of the time when the temperature is high and low in the morning and evening to pour concrete; Minimize the transportation and pouring time, prevent exposure to the sun, and increase the collapse of the mixture when it comes out of the tank; Intermittent watering should not be done during curing, because the temperature of the concrete surface rises when it is dry and cools when it is watered, and this alternating effect of cold and heat will reduce the strength and crack resistance of the concrete. In winter, it is necessary to keep warm and prevent frost damage, and the comprehensive heat storage method and steaming method are generally adopted for winter construction. Well, the above are some of my insights on C15 concrete, I don't know if you have a deeper understanding of C15 concrete.

Also, in terms of **, the current C15 concrete is 250 to 350 a cubic meter of ** in each place is not the same, the price is not the same, and according to the market price of concrete ** is not fixed. It is recommended to consult the local market** to be clearer. Hope my answer is helpful to you, thanks @!

Fine stone refers to the fine stone concrete with a particle size in the range of 5 to 10mm.

It is generally used for bottom plate waterproofing, protective layer, leveling, etc., and plain concrete is generally used for cushioning.

There is no reinforcement mechanism. Concrete stone requires crushing index, fine stone has a low crushing value, so the amount of cement and the sand rate should be increased accordingly when compiling.

Plain concrete is only concrete, and does not contain steel or other things such as bamboo or flakes.

Fine stone concrete is a requirement for the particle size of the coarse aggregate in the concrete, and the general particle size is generally used in housing construction.

Fine stone concrete refers to the small particle size of the coarse aggregate of the concrete itself, while plain concrete refers to the structure of the concrete poured without other materials such as steel bars to strengthen the structure (after the pouring is completed, it is just a concrete slab).

1. Concrete strength: C15, slump: 35-50mm, sand mold: medium sand, preparation strength, maximum particle size of stone 40mm, cement strength, amount per cubic meter;

2. Cement 246kg m3, sand 76kg m3, gravel 119kg m3, water 175kg m3

The above mixing ratio:

3. Sand volume, gravel.

4. It depends on the strength grade of concrete, and the strength grade is different, and the quantity is also different. These data were obtained through standard laboratories. Medium sand is used, the fineness modulus is 5 mm, and the crushed stone is 5 mm continuous particle size.

The concrete mix of each grade can also be adjusted by adding admixtures.

5. There is no substantial difference between the original standard formula and the formula used in this standard. The method for evaluating the results of concrete strength tests recommended by ACI 214-77 is mainly cited (1989). ACI214-77 states that the average intensity FCR required for any design can be calculated by equation (1) or (1a) depending on the coefficient of deviation (CV) or standard deviation () used.

Its mix ratio is not static, it is also a dynamic adjustment process. For example, the amount of mud in the sand you use can affect your cement dosage, and whether the sand gradation is reasonable; Whether the stone you use is river stone or gravel, how much mud is there, and whether the gradation is connected gradation or single grain grade; What grade of cement do you use, and the model is still the same; whether the mixing is mechanical or manual; Whether the water used is ordinary drinking water or river water.

C15 Concrete Mix Design:

1. Determination of concrete preparation strength.

2. Selection of basic parameters of mix ratio.

2-1.Water-cement ratio (w c).

According to JGJ T55-96 and drawings and technical specifications (1) W C=AAFCE ( AA is.

ab is. FCE is.

Therefore, w c = is selected as the benchmark water-cement ratio according to the coarse and fine aggregates of the construction site and the material properties and experience of the cement used.

2-2.Selection of slump.

According to the C15 mix ratio of the use of parts, check the table, the slump is selected as 10 30mm.

2. That is, 180kg of water is needed per cubic meter, 310kg of cement, 645kg of sand, and 1225kg of stone

Concrete strength: C15, slump: 35-50mm; Sand type: medium sand, preparation strength; The maximum particle size of the stone is 40mm; Cement strength grade.

Dosage per cubic meter: cement 246kg m3, sand 767kg m3, gravel 1199kg m3, water 175kg m3;

mix ratio; 1：：；

sand volume dosage crushed stone;

The so-called concrete construction mix ratio refers to the proportional relationship between the constituent materials in the concrete.

Adjustment steps: set the laboratory mix ratio as: cement:

Water: Sand: Stone = 1:

x:y:z, the moisture content of the sand on site is m, and the moisture content of the stone is n, then the construction mix ratio is adjusted as:

1：(x-y*m-z*n)：y*（1+m）：

z*（1+n）。

Concrete mix design is a very important work in concrete engineering, which directly affects the smooth construction of concrete, the quality of concrete engineering and the cost of concrete engineering.

C15-80GD40 mix design:

1. Calculate the preliminary mix ratio.

1. Determine the preparation strength of concrete (

15 MPa, Standard Deviation = 5 MPa, = MPa, FCE= MPA

2. Calculate the water-glue ratio (W B) W B = (AA FCE) ( AA ab FCE) = take.

3. Selected Unit Water Consumption (MWO) Slump: 120 mm, MWO = 208 Take 210

The water reduction rate of the retarding pumping agent is 14% and the dosage is: =220 (1-16%) = 181 take 180

4. Calculate the amount of cement per unit (mco).

mco=mwo (w c) = 217 take 217

5. Determine the sand rate (BS).

The fineness modulus of desalination sand is bs= 41% by experience and practice

6. The admixture is S95 mineral powder, and the amount is equal to replace cement, and the content is 45% MK 98

7. The amount of cement is MC 217 (1-45) 119

8. The dosage of admixture is: mj (mc mk).

9. Calculate the unit dosage of coarse and fine aggregates (volume method).

c= ρk= ρs= ρg= ρj= ρp=

mgo= 1134 ㎏ mso= 788 ㎏

10. Determine the preliminary mix ratio from the calculated dosage of each unit: cement, mineral powder, sand, gravel, water, admixture.

C15-80GD40 mix design:

1. Calculate the preliminary mix ratio.

1. Determine the preparation strength of concrete (

15 MPa standard deviation = 5 MPa = MPA

fce= mpa

2. Calculate the water-glue ratio (W B) W B = (AA FCE) ( AA ab FCE) = take.

3. Selected unit water consumption (MWO) Slump: 120 mm

mwo = 208 takes 210

The water reduction rate of the retarding pumping agent is 14%, and the dosage is:

MW =220 (1-16%) = 181 take 180

4. Calculate the amount of cement per unit (mco).

mco=mwo (w c) = 217 take 217

5. Determine the sand rate (BS).

The fineness modulus of desalination sand is bs= 41% by experience and practice

6. The admixture is S95 mineral powder, and the amount is equal to replace cement, and the content is 45% MK 98

7. The amount of cement is MC 217 (1-45) 119

8. The dosage of admixture is: mj (mc mk).

9. Calculate the unit dosage of coarse and fine aggregates (volume method).

c= ρk= ρs= ρg= ρj= ρp=

mgo= 1134 ㎏ mso= 788 ㎏

10. Determine the preliminary mix ratio from the calculated dosage of each unit: cement, mineral powder, sand, gravel, water, admixture.

The mix ratio of C15 concrete is water: cement: sand: stone: 1:, the above proportion is the weight ratio, the slump is required to be controlled at 35-50mm, the particle size of the stone is 10mm-40mm, and the gradation is good. The sand should be medium sand, sand and stone can not contain mud, and the water can be tap water.

The mix ratio of C15 concrete is: cement 246kg, sand 767kg, gravel 1199kg, water 175kg, mix ratio 1:::

Yes, you can go to the budget and check it yourself, and you can convert it.

But it's useless to want that.

You can go to the lab and ask for a match.

According to the specification, the modulus of elasticity of concrete is n mm 2

The Poisson's ratio of C15 concrete is.

1. According to the requirements of the concrete structure design code GB50010-2010 for materials: the strength grade of plain concrete structure should not be lower than C15. The concrete grade of reinforced concrete structures should not be lower than C20.

When using steel bars with a strength grade of 400MP and above, the concrete strength grade should not be less than C25.

For reinforced concrete components bearing repeated loads, the concrete strength grade should not be lower than C302, and the minimum strength C20 in various environments according to the requirements of the concrete durability of the concrete design code GB50010-2010

Therefore, it is impossible to make a foundation for C15, especially plain concrete.