The laboratory prepares C30 gravel concrete after a preliminary mix ratio of 5

First of all, you have to get the mix ratio design strength you need

Then according to the three strengths and three water-cement ratios in the problem, W c = water consumption is unchanged to obtain other dosages: cement MCO = 379kg, sand MSO = 651kg, stone MGO = 1212kg

The final mix ratio is water: cement: sand: stone = 178:379:651:1212=:1::

Summary. Fine stone concrete is marked C40.

One cubic meter requires 264 kilograms of cement, 680 kilograms of yellow sand, and 1,290 kilograms of stones.

The C40 fine stone concrete mix ratio is:

1 cubic meter of C40 fine stone concrete raw material dosage:

264kg of cement, 680kg of medium sand, 1290kg of 5-15 gravel, 185kg of water

Factors such as the size of the slump, the moisture content of the sand, and the particle size of the gravel also affect the mix ratio of fine stone concrete.

C40 fine stone concrete mix ratio.

Fine stone imitation Wubi concrete is marked C40. A cubic meter needs 264 kilograms of cement, 680 kilograms of yellow sand, 1290 kilograms of stone C40 fine stone concrete mix ratio is: cubic meter of Qin C40 fine stone concrete original orange potato material dosage:

Cement 264kg, medium sand 680kg, 5-15 gravel 1290kg, water 185kg slump size, sand moisture content, gravel particle size and other factors also affect the fine stone concrete mix ratio.

Extended information: The ratio of fine stone concrete is determined according to the cement number, fine stone concrete number, the size of the collapse, the sand moisture content, and the experiment is determined. The difference between fine stone concrete and ordinary concrete is that the particle size of gravel is different, the particle size of gravel used in fine stone concrete is 5-15mm, and the particle size of gravel used in ordinary concrete is 10-30mm, and the design of fine stone concrete mix ratio is a very important work in fine stone concrete engineering, which directly affects the smooth construction of fine stone concrete, the quality of fine stone concrete engineering and the cost of fine stone concrete engineering.

The basic requirements for the design of fine stone concrete mix ratio: 1. Meet the strength grade of fine stone concrete design. 2. Fine stone concrete and workability that meet the construction requirements.

3. Durability to meet the requirements of fine stone concrete. 4. To meet the above conditions, save cement and reduce the cost of fine stone concrete. "Design Regulations for Concrete Mix Ratio" is a book published by China Architecture & Building Press in July 2011.

The book includes the determination of concrete preparation strength, the calculation of concrete mixing ratio, the trial, adjustment and determination of concrete mixture.

Can the strength of fine stone concrete reach C40?

The strength grade of concrete does not depend on the size of the coarse aggregate, but on the grip of the cement grade, the quality of the aggregate and the gradation of the number of grains, and the mix ratio. The wall of the high-strength prestressed pipe pile is thin, and the number of annihilation may be made of large stones, and the concrete reaches C60 and above.

Excuse me, can fine stone concrete impermeable C40 be used instead of ordinary concrete impermeable C40, on the inclined slab, reinforced concrete, hello, this needs to be according to the design drawings scheme requirements.

The water-cement ratio is, the sand rate is, water consumption per cubic meter = 190kg, cement consumption = 422kg, gravel consumption = 1252kg, sand consumption = 536kgThis slump is 35mm.

The principle of determining the reasonable sand rate is: the amount of sand fills the void of the stone with a slight surplus. The sand rate has a great impact on the workability, strength and durability of concrete, and also directly affects the amount of cement, so the optimal sand rate should be selected as much as possible, and adjusted according to the fineness modulus of the sand, the requirements of the slump, etc., and the conditional matters are determined by the test.

It is known that the laboratory mix ratio of C30 concrete is,:1::, and the weight of concrete per 1m3 is 2415kg.

During on-site construction, the moisture content of hand socks sand is determined to be 2%, and the moisture content of stones is 1%, if the discharge capacity of the mixer is, the amount of sand, stone and water potato mixed by each stirring base bird is obtained.

C30 concrete mix ratio is: the so-called concrete construction mix ratio refers to the proportional relationship between the mountain return wheels of each component material in concrete. The concrete mix ratio of C10, C20, C25, etc. is the ratio between the various constituent materials (cement, water, sand, stone) in 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）。Extended Information: Design Basis:

1) Concrete mix design basis: "Ordinary Concrete Mix Design Regulations" (JGJ 55 2011) "Code for Acceptance of Construction Quality of Concrete Structures" (GB 50204 2015) "Concrete Quality Control Standards" (GB 50164 2011) "Test Methods for Ordinary Concrete Mixture Properties" (GB T 50080 2002) "Test Methods for Mechanical Properties of Ordinary Concrete" (GB T 50081 2002) "Concrete Strength Inspection and Evaluation Standards" Shicong (GB T 50107 2010) and relevant standards for sand, stone, admixtures, admixtures. (2) Principles of concrete mix design:

1. The workability of the concrete mixture can meet the needs of construction; 2. The strength of the concrete can meet the requirements of the design; 3. Concrete should have good durability; 4.In meeting the above requirements.

Summary. Generally, welding, bolting, rebar pulling and other methods are used to link the steel structure column and column.

Stir a tray of sand, gravel and water for the amount of water.

It is known that the vertical ratio of the laboratory to the shed mixture of C30 concrete is::1:, and the weight of each 1m of concrete is 24 15kg.

During on-site construction, the moisture content of the sand is determined to be 2%, and the moisture content of the stone is 1%.

It is known that the vertical ratio of the laboratory to the shed mixture of C30 concrete is::1:, and the weight of each 1m of concrete is 24 15kg.

Stir a tray of sand, gravel and water for the amount of water.

What is the relationship between the material capacity and the total weight?

It is known that the vertical ratio of the laboratory to the shed mixture of C30 concrete is::1:, and the weight of each 1m of concrete is 24 15kg.

What is the way of linking steel structure columns to columns?

During on-site construction, the moisture content of the sand is determined to be 2%, and the moisture content of the stone is 1%.

It is known that the vertical ratio of the laboratory to the shed mixture of C30 concrete is::1:, and the weight of each 1m of concrete is 24 15kg.

Stir a tray of sand, gravel and water for the amount of water.

During on-site construction, the moisture content of the sand is determined to be 2%, and the moisture content of the stone is 1%.

It is known that the vertical ratio of the laboratory to the shed mixture of C30 concrete is::1:, and the weight of each 1m of concrete is 24 15kg.

Stir a tray of sand, gravel and water for the amount of water.

During on-site construction, the moisture content of the sand is determined to be 2%, and the moisture content of the stone is 1%.

It is known that the vertical ratio of the laboratory to the shed mixture of C30 concrete is::1:, and the weight of each 1m of concrete is 24 15kg.

Stir a tray of sand, gravel and water for the amount of water.

During on-site construction, the moisture content of the sand is determined to be 2%, and the moisture content of the stone is 1%.

It is known that the vertical ratio of the laboratory to the shed mixture of C30 concrete is::1:, and the weight of each 1m of concrete is 24 15kg.

Ordinary cement, water-cement ratio pebble particle size 10 30, medium coarse sand. Material per cubic concrete: cement 394, water 185, sand 571, pebble 1250.

The mix ratio of the laboratory is: cement: water:

Sand:gravel=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 to: 1:

x-y*m-z*n)：y*（1+m）：z*（1+n）。