How much time does it take to fill the concrete after the bored pile is emptied

Bored piles.

After the completion of the secondary hole cleaning, the concrete should be poured immediately, and it should be completed within half an hour.

If the pouring time is postponed for some reason, the hole should be cleaned again, otherwise it may cause the sand particles suspended in the mud in the hole to sink and make the sediment at the bottom of the hole too thick, especially the bored pile of the mud wall protection, the sediment thickness may exceed the standard if the time is too long, resulting in the pipe plugging accident and even the hole collapse due to the failure of the water barrier to work normally.

The bored pile should be poured with concrete immediately after the completion of the second hole cleaning, and the general experience is to complete it within half an hour.

If the pouring time is postponed for some reason, the hole should be cleaned again, otherwise it may cause the sand particles suspended in the mud in the hole to sink and make the sediment at the bottom of the hole too thick, especially the bored pile of the mud wall protection, the sediment thickness may exceed the standard if the time is too long, resulting in the pipe plugging accident and even the hole collapse due to the failure of the water barrier to work normally.

Summary. After the completion of the bored pile, the foundation was excavated 28 days later. Generally, after 28 days, you can start digging the foundation.

After the completion of the bored pile, the foundation was excavated 28 days later. Generally, after 28 days, you can start digging the foundation.

Cast-in-place pile refers to the pile hole formed in the foundation soil by means of mechanical drilling, steel pipe squeezing or manual excavation at the engineering site, and the pile made of reinforcement cage and cast-in-place concrete in it, according to the different hole-forming methods, cast-in-place pile can be divided into several categories such as immersed pipe cast-in-place pile, bored cast-in-place pile and excavated cast-in-place pile. Bored piles are a type of piles defined by the classification of pile-forming methods. Third, the construction method of bored pile:

Leveling the lead state Huaiyuan site Mud preparation Buried casing Laying the working platform Installing the drilling rig and positioning Drilling into the hole Cleaning the hole and checking the closed amount of hole quality Lowering the reinforcement cage Pouring underwater concrete Pulling out the casing Check the quality.

The specific time to complete the bored pile is generally about 3 months, which is related to the pile length, engineering quantity, number of shifts, working face, geological conditions, equipment conditions, site conditions, concrete pouring conditions, etc.

Bored pile refers to the pile hole formed in the foundation soil by means of mechanical drilling, steel pipe squeezing or manual excavation at the engineering site, and the pile made of reinforcement cage and concrete is placed in it, according to the different hole forming methods, the cast-in-place pile can be divided into several categories such as immersed pipe cast-in-place pile, bored cast-in-place pile and dug-in-place pile. Bored piles are a type of piles defined by the classification of pile-forming methods. Rotary drilling rig is a kind of construction machinery suitable for punching operations in building foundation engineering, using hydraulic crawler telescopic chassis, self-lifting and landing foldable mast, telescopic drill pipe, with verticality automatic detection, adjustment, hole depth digital display, etc.

How to clean the hole of the bored pile once, and how to clean it for the second time.

Hole cleaning can also be carried out by mud replacement method, that is, after the drilling is completed, lift the drill bit Qi Penghe to the first hole cleaning, lift the drill bit from the bottom of the hole about 100 300mm, continue to rotate, maintain the normal circulation of mud to suck off the sediment at the bottom of the hole, and gradually replace the floating slag in the hole and Sakura, when cleaning the hole and discharging the slag, the height of the head in the hole should be maintained, to prevent the proportion of the collapsed mud from being maintained at about that. The second hole cleaning should be carried out after the installation of the reinforcement cage and conduit is completed. It is not easy to clean the hole too long each time to prevent the hole from collapsing.

Dear, I am glad to answer for you: 10 meters of bored pile hole cleaning time regulations A: 10 meters of bored pile manuscript number of hole cleaning is generally no time limit.

The purpose of hole cleaning is to remove the sediment from the hole outside the hole. The best detection method is to measure the bond-containing penetration rate of the mud. When the sand content is less than that, it is generally considered to be qualified for hole cleaning.

The cast-in-place pile is directly opened in the designed pile position, and its cross-section is circular, and the reinforcement cage is added in the hole after the hole is formed, and the concrete is poured. It is used in urban architecture.

Lift the drill bit to the bottom of the hole, so that it idles and sucks out the drill slag; The air duct attached to the duct can be used to clean the hole again.

Hole cleaning is an important part of ensuring the quality of bored piles in the construction of bored piles, and all the sediment is removed as much as possible through hole cleaning, so that the concrete and bedrock are well jointed, so as to improve the bearing capacity of the pile bottom. After the final hole, the drill bit is lifted to the place from the bottom of the hole, so that it can be idled, and the remaining drilling slag at the bottom of the hole is sucked out; If necessary, an appropriate amount of soda ash is put in to improve the specific gravity and cementation capacity of the mud, so that the sediment can be discharged out of the hole.

When the reinforcement cage is sunk and fixed, the hole depth and sediment thickness are rechecked again. If the sediment exceeds the standard, the air duct attached to the conduit can be used to clean the hole again until it meets the design requirements and process standards. Before the end of hole cleaning, the specific gravity of the mud is adjusted to the specified range to ensure the smooth pouring of underwater concrete and the quality of the pile.

Take the positive cycle method, for example. The first hole cleaning is started after the drill bit is drilled down to the bottom of the hole, with the purpose of removing the scum in the borehole; The second hole cleaning is carried out after the reinforcement cage and conduit are inserted, with the aim of removing the sediment that has settled at the bottom of the hole.

Let's take a look at the construction animation of the image:

A hole cleaning is to lift the drill pipe a little after the final hole, and use the agitation of the drill bit to discharge the drill slag through positive circulation.

The secondary hole cleaning is to take out the drill bit and drill pipe, and clean the steel cage and conduit with a conduit after it is finished.

Bored piles.

Cast-in-place pile refers to the pile hole formed in the foundation soil by means of mechanical drilling, steel pipe squeezing or manual excavation at the engineering site, and the pile made of reinforcement cage and cast-in-place concrete in it, according to the different hole-forming methods, cast-in-place pile can be divided into several categories such as immersed pipe cast-in-place pile, bored cast-in-place pile and excavated cast-in-place pile. Bored piles are a type of piles defined by the classification of pile-forming methods.

The first hole cleaning is after the hole is formed, and the second hole cleaning is after the catheter is removed.

The bored pile should be poured with concrete immediately after the completion of the second hole cleaning, and it should be completed within half an hour.

If the pouring time is postponed for some reason, the hole should be cleaned again, otherwise it may cause the sand particles suspended in the mud in the hole to sink and make the sediment at the bottom of the hole too thick, especially the bored pile of the mud wall protection, the sediment thickness may exceed the standard for too long, resulting in the pipe plugging accident that cannot work normally, and even the tung hole before the collapse.

Immediately after the second hole cleaning, concrete pouring should begin.

The distance from the bottom of the perfusion conduit to the bottom of the hole should be 300-500mm, and the maximum value should be taken as much as possible under the condition that the initial filling amount of the grouting equipment is sufficient. The water trap should be carefully made, its diameter and ovality should meet the requirements of the angle, and its length should be 200mm.

After the completion of the second hole cleaning, the concrete should be poured immediately, and if the concrete is delayed for any reason, the hole should be re-cleaned. Otherwise, it may cause the sand particles suspended by the mud in the hole to sink and make the sediment at the bottom of the hole too thick, and cause the water trap to be unable to be discharged out of the conduit and cause the pipe plugging accident to occur.