How to match C30 concrete mixture

C30 concrete raw material ratio.

Water: 175kg, cement: 461kg, sand: 512kg, stones: 1252kg

Combined, the mix ratio:

C30 concrete strength explained in detail

Compressive strength of concrete per cubic meter.

MPA is the unit of measurement.

To represent, C30 concrete strength is to represent each cube.

The compressive strength is 30MPa, C30 is the more common concrete strength, ranking fourth in the entire concrete strength division, belonging to the low and medium strength of ordinary grade concrete, according to the current standard, C30 concrete strength is the current low-end strength level.

C30 Concrete Strength Engineering Structure Seismic Grade.

It is a first-class and second-level one, with a wide range of uses, and is often used as a supporting role, such as industrial and civil buildings.

various constructions, middle and lower part of the bridge, etc.

In order to achieve a concrete strength value of C30, the first step is to design the correct strength value. According to the Code for the Design of Concrete Structures

The standard value of C30 concrete compressive strength is , and the design value is.

According to the standard value to calculate, it is not necessarily able to ensure that the strength of the finished product is reached, and the actual concrete strength needs to be tested. There are many detection methods, and the more common ones are rebound method, core drilling method and ultrasonic.

During the inspection, it is necessary to determine that the strength after 28 days will not be lower than the C30 concrete strength standard.

95% of the value, if it is early strength, then it will reach 80% after 7 days, if the intensity is below this range, then the strength is unqualified.

C30 concrete mix ratio is: 1:: concrete: water: 175kg, cement: 461kg, sand: 512kg, stone: 1252kg.

There are two ways to express the C30 concrete mix ratio: one is the amount of various materials in 1 cubic meter of commercial concrete, such as 300 kg of cement, 180 kg of water, 690 kg of sand and 1260 kg of stone; The other is expressed by the ratio of cement per unit mass to the amount of various materials and the water-cement ratio of commercial concrete, for example, the preceding example can be written as: c:

s：g=1：：，w/c=。

Generally, the measures to ensure the strength of C30 concrete are mainly guaranteed from the following aspects:

1. Process: From the mixing, transportation, mold and vibration of concrete, the construction must be carried out in accordance with the corresponding process standards.

3. Machinery: Concrete mixing, pouring and transportation machinery must meet actual needs.

5. Link control: on-site management personnel must go to the site to inspect and stand next to the station to ensure the qualified requirements of each link. In terms of strength, C30 concrete should be required to be qualified.

Matching: 1. You need to take 175kg of water, 461kg of cement, 512kg of sand, and the water-glue ratio of the stone must be as follows, a handful, the sand rate depends on whether you are a secondary match or a primary match, and the secondary ratio is 33% to 35%, if the material of the sand and gravel meets the requirements of the specification, then the water consumption can be taken 185kg, and then see if the water reducer is mixed.

2. The strength of concrete preparation should be calculated as follows: fcu, 0 fcu, k+ where: —pure width—standard deviation of concrete strength (n mm2). Take =;

fcu,0 - concrete preparation strength (n mm2); fcu, k - the standard value of the compressive strength of the concrete cube (n mm2), take fcu, k = 20 (n mm2);

It is calculated: fcu, 0=20+.

Summary. C30 concrete mix ratio is.

C30 concrete mix ratio is.

The mix ratio of C30 concrete is: cement: sand:

Pebble: water = 400:660:

1250:190 in kilograms. The specific fit of C30 concrete is as follows:

1.Cement: Cement, calculated at 400 kg; 2.

Sand: the ratio of medium sand and fine sand is 1:1, and the bright code is calculated as 660 kg; 3.

Stones: The particle size of stones is 13mm-25mm, calculated as 1250 kg; 4.Water:

According to 190 kilograms, which is the width. It should be noted that the fitting ratio of concrete needs to be adjusted according to specific engineering requirements and material characteristics to ensure that the performance and quality of concrete meet the requirements.

What is the ratio of C30 concrete mix?

The C30 concrete mix ratio is: water 175kg, cement 461kg, sand 512kg, stone 1252kg, mix ratio::1::.

How to match the C30 concrete mix ratio.

What is the ratio of C30 concrete mix? The C30 concrete mix ratio is: water 175kg, cement 461kg, sand 512kg, stone 1252kg, mix ratio::1::.

What is the cement mark?

Does fine sand affect the effect of sand.

Both 325 and 425 are fine.

Fine sand can be used, but the strength of the finished product is not enough, and it is easy to hollow and crack if the construction is improper. Coarse sand is not good, plastering is difficult, artificial physical consumption is also large, and the finished wall is smooth; The effect of perception and yin and yang angle is not good, and it is recommended to use medium sand.