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Premium LECA Expanded Clay Aggregate China Factory and Suppliers
Premium LECA Expanded Clay Aggregate China Factory and Suppliers
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Lightweight Expanded Clay Aggregate (LECA), also known as expanded ceramsite, is a high-performance mineral medium engineered through the high-temperature firing of raw clay in rotary kilns. This process creates a unique, porous structure that makes LECA an indispensable material for both advanced horticulture and modern sustainable construction, providing a perfect balance of stability and permeability.
Designed for versatility, LECA serves as a premium soil-less growing medium in hydroponics and landscaping, while acting as a durable, corrosion-resistant, and insulating fill material in the construction industry. Its pH-neutral composition and exceptional drainage capabilities ensure optimal root health for plants and superior structural integrity for lightweight concrete and green roof projects.
Detailed Parameters
| Product Name | LECA / Expanded Ceramsite / Clay Pebbles | Appearance | Lightweight brown spheres |
|---|---|---|---|
| Available Sizes | 1-4mm, 4-8mm, 8-10mm, 11-14mm, 8-16mm, 10-35mm | Bulk Density | 0.25-0.45g/cm³ |
| Purity | ≥99% | pH Value | 6.5-7.5 (pH Neutral) |
| Water Absorption | 15% Maximum | Raw Material | High-quality Natural Clay |
| Packing Options | 50L Bag, 1100L Ton Bag, Customized Packing | Firing Temp | 1,000°C to 1,200°C |
Key Advantages
Chemical Inertness
Chemically stable and corrosion-resistant, ensuring no negative reaction with nutrient solutions or structural materials.
High Durability
Resistant to physical wear and tear, providing a long-lasting lifecycle in both gardening and building applications.
Excellent Aeration
The highly porous structure increases oxygen flow to root systems, preventing root rot and promoting rapid growth.
Low Density
Significantly reduces structural weight, making it ideal for green roofs, lightweight concrete, and bridge abutments.
Thermal Insulation
Superior heat, fire, and sound-insulating properties that enhance energy efficiency in modern construction.
Eco-Friendly & Reusable
Can be cleaned and sterilized after each growing cycle, reducing waste and lowering long-term operational costs.
Product Gallery
Management Platforms
Hydroponic Support
Ideal for NFT, DWC, and drip systems, providing structural anchoring and optimal nutrient absorption.
Construction Fill
Perfect for structural backfill against foundations, retaining walls, and bridge abutments.
Moisture Control
Balances water retention with high drainage to prevent root rot and maintain plant health.
Lightweight Concrete
Used in casting precast concrete bricks and slabs to reduce overall weight without sacrificing strength.
Bulk Supply Chain
Optimized logistics for commercial growers through customized ton bags and bulk shipping options.
Quality Grading
Strict size grading (1mm to 35mm) to meet precise industry specifications for every application.
Investment Return Comparison
| Feature | Organic Soil | LECA (Expanded Clay) |
|---|---|---|
| Reusability | Single Use | Multi-cycle Reusable |
| Drainage Speed | Moderate to Low | Excellent / High |
| pH Stability | Variable | Highly Stable (Neutral) |
| Weight Impact | Heavy | Ultra-Lightweight |
| Root Aeration | Low (Compactable) | High (Permanent Porosity) |
Frequently Asked Questions
Q: What is LECA made of and how is it produced?
LECA is made from high-quality natural clay. It is produced by heating raw clay in a rotary kiln at temperatures between 1,000°C and 1,200°C, causing the material to expand into lightweight, porous spheres.
Q: Can LECA be reused in hydroponic systems?
Yes, one of the biggest advantages of LECA is its reusability. After each harvest, the pebbles can be cleaned and sterilized, making it a cost-effective and sustainable choice for commercial growers.
Q: Does LECA affect the pH level of my nutrient solution?
No, LECA is pH-neutral (typically ranging from 6.5 to 7.5), meaning it will not alter the pH balance of your nutrient solution, ensuring compatibility with a wide variety of crops.
Q: How does LECA benefit plants compared to traditional soil?
LECA provides superior aeration and drainage, which prevents waterlogging and root rot. Its porous structure also allows for better moisture retention while ensuring roots have constant access to oxygen.
Q: What are the common applications of LECA in construction?
In construction, LECA is used for producing lightweight concrete, structural backfill for foundations and retaining walls, and as a filling material for precast concrete bricks and slabs.
Q: What sizes of expanded clay pebbles are available for bulk purchase?
We offer a wide range of sizes to suit different needs, including 1-4mm, 4-8mm, 8-10mm, 11-14mm, 8-16mm, and 10-35mm, with packaging available in 50L bags or 1100L ton bags.
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