CFG Pile Breaking Handling Specification! Specification requirements for CFG pile construction pile

There is no provision in the specification, the method of planting steel bars can be used to strengthen the stubble, and then pour concrete after chiseling the broken pile surface, as for the diameter, length, number of roots, steel bar type, etc., you can negotiate with the supervision engineer and report to the owner for approval after construction.

During construction, the phenomenon of CFG pile breaking occurs from time to time, and the pile can be connected by specification! General shallow broken pile connection method:

1. Clean the section first until there is no loose stone;

2. Expand 5cm along the center of the pile, and the depth is controlled at about 15cm below the complete section;

3. Before pouring, brush the surface with a higher grade cement slurry, and pour it to the design elevation with a higher grade of concrete;

We generally use clay molds, it depends! If the supervision site is strict and requires you to make steel molds, you can use white iron sheets to process one, and it will not cost a few dollars.

1. Cement fly ash gravel pile (CFG pile.

Cement, fly ash, gravel, stone and silver chips or sand and water mixed to form a high bond strength pile (referred to as CFG pile), pile, soil between piles and bedding.

Together, they form a composite foundation. Let's feast.

Treatment of cohesive soil, silt, sand and plain fill soil that has been consolidated by its own weight. The applicability of silty soils should be determined according to regional experience or through field tests.

The bearing capacity can be greatly improved. The pile end must be placed on a relatively good soil layer. The design should be carried out with a foundation deformation check. The amount of cement is large, and the cost is high.

2. Cement soil.

Deep stirring method (wet method) Powder spraying method (dry method).

Materials such as cement (or lime) are used as curing agents.

Through a special mixing machine, the soft soil and the curing agent (slurry or powder) are forcibly stirred in situ deep in the foundation, and a series of physico-chemical reactions between the curing agent and the soft soil are generated.

The soft soil is hardened into cement-reinforced soil with integrity, water stability and certain strength, so as to improve the strength of the foundation and increase the deformation modulus.

Treatment of normally consolidated silt and silty soil, silt, saturated loess, plain fill, cohesive soil and saturated loose sand without flowing groundwater.

The original soil is used to the maximum. There is no vibration, no noise and no pollution when stirring. Reinforcement styles such as columns, walls, grilles, and blocks can be flexibly adopted.

Low cost. The natural moisture content of the foundation soil is less than 30% (the loess moisture content is less than 25%), more than 70% or the pH value of groundwater.

When it is less than 4, it is not advisable to use the dry method.

Summary: Compared with the powder spraying pile, the bearing capacity of the single pile of CFG pile is higher, which can make the bearing capacity of the reinforced soil foundation.

It is more than 2 times improved, and the soil quality requirements of the soil layer on the side of the pile are low.

If you don't know, you can continue to ask us!

Regular maintenance of machinery is the key to extending the life of machinery. Railway construction units have a lot of clear regulations on the maintenance of machinery, but many construction units have a lot of clear provisions on the maintenance of machinery, but many construction units have a tight construction period, and often ignore the maintenance work when the task is heavy, thinking that the machinery is in normal operation, there is no failure, and there is no need to stop for maintenance.

Because maintenance can eliminate mechanical hidden dangers, if Chun Nian brother does not maintain in time, it will often cause major failures in mechanical equipment and even accidents. This not only increases the maintenance cost, but also delays the construction period.

Kiss! Hello, glad to answer for you. In the construction of the shallow broken pile, the CFG pile is broken from time to time, and the standard can be connected!

Generally, the method of connecting the shallow broken pile to the pile: 1. Clean the section first until there is no loose stone; 2. Expand 5cm along the center of the pile, and the depth is controlled at about 15cm below the complete section; 3. Before pouring, brush the surface with a higher grade cement slurry, and pour it to the design elevation with a higher grade of concrete; We generally use clay molds for Tongran, depending on the situation! If the supervision site is strict and requires you to make steel molds, you will use white iron sheet to process a project In the process of mechanical excavation, individual CFG piles are broken and need to be connected.

The pile connection method is: first the pile top at the broken pile is cut flat pile body chiseling, rinsed with water, brushed with plain cement slurry before pouring, and the fine stone concrete is poured to the top of the pile elevation with a grade higher than the pile strength, the diameter of the pile part is 200mm larger than the original pile diameter, and it is surrounded and embedded into the original pile body below 150mm, and the pouring process must be vibrated and compacted. After the pile head is treated, the pile head and the soil between the piles should be in the same plane before the mattress cushion can be laid.

Hope mine can help you <>

Do you have any other questions?

Summary. The following is my question for your [how deep is the cfg pile broken and does not need to be connected]: Hello, <> dear!

CFG pile breaking depth below 200mm (including 20mm) 1) is not required to connect the pile, CFG pile (cement fly ash gravel pile) is a variable strength pile made of gravel, stone chips, sand, fly ash mixed with cement and water, and made of various pile forming machinery. By adjusting the cement content and ratio, its strength grade changes between C15 and C25, which is a pile type between rigid pile and flexible pile. It is suitable for dealing with cohesive soil, silt, sand and plain fill soil that has been consolidated by its own weight.

This area generally adopts long spiral drilling, pump pressure mixture in the pipe pouring into pile construction technology, it has the characteristics of simple construction, low noise, small pollution, large increase in bearing capacity, small foundation deformation, etc., and has a large scope of application, widely used in industrial plants and civil residential foundation treatment and reinforcement.

The following is my question for your [how deep is the cfg pile broken and does not need to be connected]: Hello, <> dear! CFG pile fracture depth below 200mm (including 20mm) 1) is not required to connect the pile, the CFG pile (cement fly ash gravel pile) is made of gravel, stone chips, sand, fly ash mixed with cement and water, with a variety of pile forming machinery made of variable strength trembling pile.

By adjusting the cement content and ratio, its strength grade changes between C15 and C25, which is a pile type between rigid pile and flexible car pile. It is suitable for dealing with the remaining source of cohesive soil, silt, sand and plain fill soil that has been consolidated by its own weight. This area generally adopts long spiral drilling, pump pressure mixture in the pipe pouring into pile construction technology, it has the characteristics of simple construction, low noise, small pollution, large increase in bearing capacity, small foundation deformation, etc., and has a large scope of application, widely used in industrial plants and civil residential foundation treatment and reinforcement.

Kiss <>

Generally, the method of connecting shallow broken piles: 1. Clean up the section first, until there is no loose guess to rotate the stones; 2. Expand 5cm along the center of the pile spike, and the depth is controlled at about 15cm below the complete section; 3. Before pouring, the surface is simply brushed with a higher grade cement slurry, and the concrete with a higher grade is poured to the design elevation;

Appendix A of the Technical Code for the Treatment of Building Foundations (JGJ 79-2002).

Regular maintenance of machinery is the key to prolonging the life of machinery. The railway construction unit has a lot of clear regulations on the maintenance of machinery, but many construction units have a lot of clear provisions on the maintenance of machinery, but many construction units often ignore the maintenance work when the construction period is tight, and the maintenance work is often ignored when the task is heavy, thinking that the machinery is in normal operation, there is no fault, and there is no need to stop for maintenance.

Because maintenance can eliminate the hidden dangers of machine pickpocketing, if not maintained in time, it will often cause major failures and even accidents in mechanical equipment. This not only increases the maintenance cost, but also delays the construction period.