Special polymer mud powder for rotary drilling and pile driving
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High-efficiency mud powder for rotary drilling rig
1. Introduction:
Xinyuan polymer mud This product is based on modified polymer, and is equipped with various additives such as anti-collapse agent, lubricant, fluid loss agent and stabilizer. Drawing on the mature pulping technology of foreign countries in rotary excavation construction and combining with the actual domestic application, a very mature polymer mud system has been formed. Xinyuan Chemical Mud was introduced into the Chinese market as a new type of material, which has very different properties from clay mud and bentonite mud. The ability to quickly deposit drill cuttings is more obvious, especially the complex geological conditions that are difficult to adapt to bentonite and clay, and the thick sand layer, its large viscosity, small specific gravity, and small sand content have achieved good results in site construction. The actual effect is believed to play a greater role under similar complicated geological conditions, and it will be widely used in the field of bored pile construction. 
Chemical source of Xinyuan chemical mud The main role of chemical mud is to protect the soil, sand and other impurities generated during the stabilization of the pile hole wall and flocculation drilling. It has a wide range of application strata, ranging from loess, clay, fine coarse sand layer, gravel sand and fine round gravel. Generally, the dosage is 0.01% ~ 0.1%, and the pH is between 8 ~ 10.
Main performance: The slurry formed by the special polymer mud (chemical mud powder) of the rotary excavator not only has good wall protection and anti-collapse effect, but also can absorb drill cuttings. The thickness of the sediment in the hole generally does not exceed 10cm. The second hole is cleared, and the mud body does not contain drill cuttings. The friction layer of the hole wall is thickened, which can effectively improve the friction bearing capacity of the pile. It reaches 98%, and is non-toxic, odorless, and harmless to the environment. The amount of polymer mud (chemical mud powder) for Xinyuan rotary excavator is mainly used to protect the soil, sand and other impurities generated during the stability of the pile hole wall and flocculation drilling. It has a wide range of application strata, ranging from loess, clay, fine coarse sand layer, gravel sand and fine round gravel. Generally, the dosage is 0.01% ~ 0.1%, and the pH is between 8 ~ 10. The polymer mud (chemical mud powder) special for Xinyuan rotary excavator is a new type of material.
1. Main performance: 
The slurry formed by the mud powder not only has good wall protection and anti-collapse effect, but also can absorb drill cuttings. The thickness of the sediment in the hole is generally not more than 10cm. According to the actual situation, it is not necessary to conduct secondary hole cleaning, and the mud body does not contain drill cuttings. The thickening of the friction layer of the hole wall can effectively improve the friction bearing capacity of the pile. After verification by multiple construction sites, the hole-forming pile using mud powder has been tested to 98% of the type I pile, and it is non-toxic, odorless, and not harmful to the environment.
Second, the use steps and precautions:
1. Xinyuan polymer mud can be directly poured into the hole in the sprayed clear water, quickly dissolve, and form a slurry with better viscosity, especially suitable for municipal construction sites with limited construction.
2. Follow the injected clean water into the mud pool, draw out and pump in with the mud circulation pump for circulation, and then inject it into the hole.
3. According to the local water quality and actual use, adjust the PH value with (or soda ash) aqueous solution. (Generally between 8-10).
4. 1-2 drills with holes should be allowed to stand for about 20 minutes before forming holes.
5. Try not to repair the drill bit during the hole forming process.
6. The slurry surface can never be lower than 1m below the ground, and can not take half-hole slurry to form holes, because the pressure of half-hole slurry hole formation is reduced, the wall protection ability is reduced; at the same time, when pouring concrete, the stratum that has not been soaked by the slurry is likely to collapse . 
7. Center the hole under the reinforcement cage to prevent damage to the hole wall.
8. Cannot be mixed with bentonite mud.
3. Dosage
The ratio of mud powder to water is generally prepared according to 0.02% -0.1%. The user can adjust the proportion according to the geology and actual situation of each construction site.
reference indicator
Stratum condition
Mud powder (kg / 100 cubic water)
Viscosity (seconds)
Clay and shale
20-60
17-19
Silt, fine sand to medium sand
30-70
18-22
Coarse sand, smaller gravel
40-90
20-30
Pebbles
90-120
30-38 
4. Packaging, transportation and storage:
This product is packaged in a "three-in-one" box, lined with polyethylene film bags, each with a net weight of 2.5kg; stored in a cool, dry, ventilated place. In storage and transportation, because of its water solubility, avoid bulk packaging to prevent moisture.
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