3 7 What is the meaning of ash in 14 ash soil?

3:7 Ash: Refers to a 3:7 ratio of ash to soil

14% ash: The ash dose is 14%, that is, the percentage of lime mass to dry soil is 14%.

The ash dose is the percentage of the lime mass to the dry soil mass. The same is true for the cement dosage, which is the percentage of the mass of the cement in the dry mass of all coarse and fine soil particles (i.e. gravel, sand, silt and clay)!

It should be the volume ratio.

What is 14%? Does it refer to moisture content?

Reference: Building Construction Manual 7-1-1

In general, the strength of the ash prepared with cohesive soil is 1 2 times higher than that of the sandy soil. The optimal volume ratio of lime to soil is 3 7, commonly known as Panax notoginseng ash. The lime used in the ash soil is best to use finely ground quicklime powder, or the ash is poured with an appropriate amount of water, and it is placed for 24 hours to form powdered slaked lime.

The high density of the ash has high strength and good water stability. The compactness can be controlled by dry bulk density. The compressive strength of the ash at the age of 28 days can reach about MPa, and the compressive strength of the ash at the age of 200 300 can be as high as 8 10 MPa.

The deformation modulus of Panax notoginseng ash soil, whether made of sub-clay or clay, is 10 15 MPa after 48 hours of immersion after 7 days of indoor curing, and 32 40 MPa after 48 hours of water immersion for 28 days.

In the foundation treatment project, the ash soil is not only used as the cushion material of the general foundation, but also used as the soil for compacting the pile and reinforcing the foundation, which is called the ash pile. The lining of the four walls of the swimming pool with ash prevents the pool from leaking.

3:7 ash should be 30% white ash and 70% dry soil (weight ratio), as for 14% I don't know what the situation is. Is it a design requirement of 3:7, and the actual rate is 14%? Hehe.

1. Panax notoginseng ash is a kind of building material with high strength prepared by lime and clay in a certain proportion.

2. Sanqi ash construction requirements: lime and soil must be screened. The particle size of the soil shall not be greater than 15 mm; The ash particles must not be larger than 5 mm.

It must be mixed evenly and the optimal moisture content must be controlled as the moisture content standard of the ash soil. In construction, the volume ratio is generally used, and the amount of shovel or trolley is used. From the perspective of construction quota consumption in Shandong Province, 3 7 tons of lime per cubic meter of ash and cubic meters of clay are converted into lime and clay.

Before the ash goes down into the foundation groove, the bottom of the foundation groove should be rammed once, and then the mixed ash should be poured into the groove according to the designated place, but the ash shall not flow into the groove along the groove. When ramming, it is required that the ramming nest and the kiln flower are overlapping with each other. The number of times of ramming is subject to the value specified in the specification for the dry bulk density of the ash.

After the tamping is completed, it should be covered in time to prevent sun and rain.

First, the concept is different.

8 ash soil: 2:8 ash soil, that is, 20% lime and 80% loess are mixed evenly, and then backfilled into the foundation, layered rolling and tamping.

7. Gray soil: 3:7 gray soil, that is, 30% lime and 70% loess are mixed evenly, and then backfilled into the foundation, and compacted in layers.

Second, the proportion of ash and soil in the two is different.

8 Ash: 2:8 Ash Ash accounts for 20%.

7 Ash: 3:7 Ash Ash accounts for 30%.

Third, the carrying capacity of the two is different.

8. Gray soil: low bearing capacity.

7. Gray soil: high bearing capacity.

37 ash content: 3 (3+7)=. Panax notoginseng ash is a kind of building material with high strength prepared from lime and clay in a certain proportion, and has a long history in China. In the 6th century A.D., the Southern Dynasty of Xishan Bridge in Nanjing.

The ground before the tomb was sealed was made of rammed soil.

Lime is calcium oxide (quicklime) and calcium hydroxide.

Slaked lime). Regardless of quicklime, slaked lime, silica or aluminum oxide in the hydration and soil.

and ferric oxide and other substances combined, can generate cemented calcium silicate, calcium aluminate and calcium ferrite, cementing the soil, so that the ash has high strength and water resistance. The ash gradually hardens, increasing the adhesion strength between the soil particles.

It is customary to equate 12% ash with notoginseng ash. How to get there:

1. Panax notoginseng ash is the practice of civil engineering, which is based on the volume ratio. 12% ash is generally the ratio of road and bridge specialty, which refers to the weight ratio.

2. If they are all according to the volume or weight ratio, the proportion of ash in the mold holding Panax notoginseng ash is 30% > 12%.

3. If the ash of Panax notoginseng ash is converted into weight, because the density ratio of ash to soil is about 1:3, the weight ratio of Panax notoginseng ash is about.

3:7 ash soil belongs to several types of soil, and notoginseng ash soil generally belongs to four types of soil.

1. A class of soil (soft soil): mainly includes slightly cohesive sand soil, silt, humus and loose planting soil, peat (clear code silt).

2. Class II soil (ordinary soil): mainly including moist cohesive soil and loess, soft saline soil and alkaline soil, accumulation soil and planting soil containing building material debris, gravel and pebbles.

3. Three types of soil (hard soil): mainly including moderately dense cohesive soil or loess, moist clay soil or loess containing gravel, pebbles or building material chips.

4. Four types of soil (gravel and hard soil): mainly including hard and dense clay soil or loess, medium dense clay soil or loess containing crushed stone and gravel (stones with a volume of 10 30% and a weight of less than 25kg), hardened heavy saline soil, and soft marl.

3:7 lime soil is the best lime to soil volume ratio of 3 7 ratio to prepare a building material with high strength. Each cubic meter refers to 3:7 tons of lime containing lime and cubic meters of clay, which is converted into a weight of lime and clay.

The lime used in the ash soil is best to use finely ground quicklime powder, or the ash is poured with an appropriate amount of water, and it is placed for 24 hours to form powdered slaked lime. The high density of the ash has high strength and good water stability.

Lime and soil must be sifted. The particle size of the soil shall not be greater than 15 mm; The ash particles must not be larger than 5 mm. It must be mixed evenly and the optimal moisture content must be controlled as the moisture content standard of the ash soil.

3:7 What is the ash content of the ash?

3:7 Ash Beam Stupid Bird Amount: 3 (3+7) = 2:

8 ash content of ash soil: 2 (2 + 8) =: 9 ash content of ash soil:

1 (1+9) = ash content 12 The ash and soil ratio is 3:11, calculated as follows: the soil content is 1-12 88 12%:

88%=12:88=3:11I hope I can help you, give me the flag.