Overview
Bentonite for foundation piling is a specially processed natural clay material primarily composed of montmorillonite. This swelling clay is essential in construction for creating stable drilling muds that support borehole walls during foundation work. Unlike regular bentonite, piling-grade material is carefully selected and often treated to achieve optimal viscosity and filtration control properties. Its unique ability to form a protective gel-like layer prevents borehole collapse while allowing efficient removal of drill cuttings.
Physical and Chemical Properties
Piling bentonite exhibits remarkable swelling capacity, expanding up to 15 times its dry volume when hydrated. This property creates the necessary viscosity for effective borehole support. The material demonstrates thixotropic behavior - becoming fluid when agitated but gelling when static. Chemically, it's an aluminium phyllosilicate with exchangeable cations that influence its performance. The sodium-activated variety is most common for piling applications due to its superior swelling characteristics compared to calcium bentonite. Key test parameters include Marsh funnel viscosity (typically 35-50 seconds) and API fluid loss (should be <15 ml/30 min).
Main Applications
In construction, bentonite slurry serves three critical functions: stabilizing boreholes, lubricating drilling equipment, and transporting drill cuttings to the surface. It's indispensable for cast-in-place piles, diaphragm walls, and caisson construction. The material finds particular importance in loose or water-bearing soils where conventional drilling would be impossible. Modern applications extend to micro-piling and horizontal directional drilling. Some specialized formulations include polymer additives for enhanced performance in challenging geological conditions.
Safety and Storage
While bentonite is generally non-toxic, proper handling is essential to prevent dust inhalation which may cause respiratory irritation. On-site mixing areas should have adequate ventilation, and workers should use appropriate PPE including dust masks. Storage requires protection from moisture to prevent premature activation. Bulk bags should be kept on pallets in dry conditions. Once mixed with water, bentonite slurry has limited shelf life and should be used promptly to prevent bacterial growth that degrades performance.
B2B Procurement Guide
When procuring piling bentonite, specify API or EN standards compliance. Key parameters to verify include viscosity yield (minimum 15 m³/tonne), moisture content (<12%), and sand content (<2%). Consider logistics carefully - bulk shipments offer cost savings but require proper storage facilities. For smaller projects, pre-mixed slurry might be more practical. Always request material safety data sheets and certification of analysis. Reputable suppliers should provide technical support for slurry mix design and troubleshooting.
Related Manufacturers
- 主营：[]
- 主营：锚固剂、软水盐、速凝剂、膨润土、硅酸钠、消毒剂、柠檬酸、速溶硅酸钠、软化盐、葡萄糖、减水剂、磷酸钠、漂白粉、氯化钙、叶面肥、融冰剂、硫酸钾、增稠剂、粘合剂、碳酸钠、食品添加剂、洗涤剂、硼酸钠、离子交换树脂再生剂、醋酸钠
- 主营：[]
- 主营：润滑剂、石墨粉、超细石墨粉、钠基膨润土、阻燃石墨、超细石墨、高纯石墨、煅烧高岭土、耐火泥造纸、润滑石墨铅粉、合成氟金云母粉、高岭土、种子包衣粉、麦饭石粉、白色电气石粉、远红外粉、导电石墨粉、耐高温石墨粉、云母片、天然云母片、耐高温云母片、透明云母片、云母板、沸石、沸石粉、麦饭石颗粒
- 主营：天然鹅卵石、雨花石、彩色石子、膨润土、蛭石、营养土、火山石、黑色金刚砂、地坪五彩石、变压器鹅卵石、鹅卵石滤料、水处理鹅卵石、分目烘干砂、石英砂、黑白石英砂
- 主营：超细硅酸铝粉、硅藻土、高岭土、膨润土、滑石粉、彩砂、透明粉、白炭黑、金刚砂、石墨、海泡石、木粉、轻钙、重钙、玻璃粉、贝壳粉、凹凸棒土、玻璃鳞片、陶土、铝矾土、火山岩、电气石粉、合成云母、赤铁粉
- 主营：煅烧高岭土、重钙粉、轻钙粉、膨润土、滑石粉、活性钙、硅灰、硅藻土、绿泥石粉、伊利石粉、白云石粉、石英粉、重晶石粉、活性白土、灰钙、变压器鹅卵石、彩色石子、金刚砂
- 主营：粘土球、黏土球、石英砂、膨润土球、膨润土、大口径打桩钢护筒、井口保护装置、地下水监测井、Pvc井管、岩芯箱、监测井井盖、水井回填、监测井标示牌、泥浆泵、泥浆箱、渣土箱、化学泥浆、钢护筒、灌桩导管、泥浆胶管、金马胶管、钢丝测绳、泥沙分离机、泥浆三件套、大口径螺旋钢护筒
- 主营：珍珠岩、玻化微珠、珍珠岩保温板、膨润土多少钱一吨、园艺珍珠岩、闭孔玻化微珠、珠光砂
- 主营：pvc管、井口保护装置、泥浆泵、膨润土、膨润土球、泥浆箱、钢护筒、岩芯箱、石英砂、粘土球、化学泥浆、咸阳宝石钢丝绳、泥浆水带、桥式滤水管、黏土球、球墨铸铁管、泥浆管、聚丙烯酰胺、泥沙分离器、防汛吨包
- 主营：石英砂、石英粉、碳酸钙、白云石、白云石粉、膨润土、重钙粉、轻钙粉、白沙、白石子、高岭土、煅烧高岭土、氢氧化钙、染色石子、染色彩砂、麦饭石粉、凹凸棒土粉、蛭石粉、滑石粉、氧化钙、珍珠岩、硅藻土、白陶土、火山石、金刚砂、铁钢砂、鹅卵石、沸石粉、重晶石粉、长石、铝矾土
- 主营：高岭土、陶土、硅酸铝粉、膨润土、粘土、碳酸钙、合成云母、云母片、云母粉、岩片、硅藻土、电气石、麦饭石、海泡石、透明粉、玻璃鳞片、白炭黑、石墨粉、负电位颗粒、石英砂、沸石、火山石、核桃壳、滑石粉、蛭石粉
- 主营：打渣剂、集渣剂、保温板、膨润土、除渣剂、洗手粉、沸石粉、珠光砂、珍珠岩、清渣剂、厚普矿业、铸铁铸钢、饲料沸石、沸石颗粒、水泥膨胀、保温颗粒、建筑保温、基质土营养土
- 主营：金刚砂、金刚砂耐磨地坪材料、石英砂、膨润土、石英粉、鹅卵石、水洗石、重钙粉、白云石、雪花白、珊瑚石、硫酸钡、轻钙粉、白沙子、重晶石、火山石、珊瑚骨、麦饭石、风景石、铁砂、玻璃砂、高岭土、蛭石、彩砂
- 主营：雪花白、汉白玉砂、天然彩砂、膨润土、染色彩砂、金刚砂、金刚砂耐磨地坪料、玻璃砂、玻璃块、核桃砂、蛭石、云母、岩片、鹅卵石、彩砂石子、夜光石砂、火山石、分目河沙、假山石、石英砂
- 主营：重晶石粉、萤石粉、贝壳彩片、膨润土、铝矾土粉、孵化蛭石、托玛琳粉、石英砂滤料、精制石英砂、海泡石纤维、造景夜光石、除锈石英砂、超细氧化钙、白色鹅卵石、防沉淀滑石粉、高岭土、夜光石、木粉、莫来砂、麦饭石、沸石、钢结构防火涂料、生物质颗粒、金刚砂、铝矾土
- 主营：普通石英砂、金刚砂、鹅卵石、铸造膨润土、重钙粉、云母、玻璃珠
- 主营：石英砂、金刚砂、白沙子、膨润土、滑石粉、白云石、金刚砂地坪材料、碳酸钙