Lithium Concrete Hardener Product Data Sheet
Lithium Concrete Hardener (also known as Lithium Sealed Hardener, Lithium Densifier) is a water-based liquid hardener composed primarily of nano-scale lithium silicate materials. It penetrates deeply into the concrete surface (penetration depth up to 3-7mm) and chemically reacts with free calcium ions in the concrete to form insoluble calcium silicate hydrate (C-S-H), which fills the capillary pores, creating a dense, hard, dust-proof permanent hardened layer. The product is VOC-free, environmentally friendly, and non-toxic. Treated concrete surfaces remain breathable, form no surface film, and will not peel or yellow .

Performance Characteristics
Deep Penetration: Lithium ions have smaller molecular size than sodium/potassium ions, enabling deeper penetration and more complete reaction 
Permanent Hardening: Irreversible chemical reaction with concrete, hardness increases over time and with use
Effective Dustproofing: Completely seals concrete capillaries, eliminates floor dusting problems 
Enhanced Wear Resistance: Wear resistance increased by 30-50%, surface Mohs hardness reaches 6-8 
Impermeability Protection: Effectively resists water, oil, and chemical penetration; reduces chloride ion ingress 
Gloss Enhancement: Achieves high-gloss mirror finish when combined with polishing process 
Non-Film Forming: No surface coating formed, no risk of peeling or yellowing 
Breathability: Maintains concrete's breathability, allows moisture to escape 
ASR Resistance: Lithium ions effectively inhibit alkali-silica reaction (ASR), extending concrete service life 
Low VOC: VOC content <50g/L, meets green building certification requirements 

Scope of Application
Industrial Floors: Warehouses, distribution centers, production workshops, heavy-load forklift aisles 
Commercial Spaces: Supermarkets, shopping malls, exhibition halls, office buildings 
Public Facilities: Hospitals, schools, museums, parking lots 
Cold Storage/Freezers: Resists freeze-thaw cycle damage 
Food Processing Plants: Odorless, non-toxic, easy to clean 
New/Old Concrete Floors: Suitable for newly poured or existing floor renovation 
Emery Aggregate Floors: As surface sealing treatment 
Terrazzo/Artificial Stone: Enhances surface hardness and gloss 

Technical Specifications

Mechanism of action
The core technology of Lithium Concrete Hardener lies in the reaction between lithium silicate and free calcium:
Penetration: Lithium ions (Li+) have small molecular size, enabling deep penetration into concrete capillaries 
Reaction: Li₂SiO₃ + Ca(OH)₂→ CaSiO₂ (C-S-H) + 2LiOH
Lithium silicate reacts with calcium hydroxide in concrete to form insoluble calcium silicate (calcium silicate hydrate gel)
Filling: The generated C-S-H gel fills capillary pores, densifying the concrete 
Hardening: Reduced porosity significantly improves surface hardness and wear resistance
Continuous Enhancement: Reaction continues over time, performance continuously improves
Advantages over traditional sodium/potassium-based hardeners:
Smaller lithium ions enable deeper penetration 
More stable reaction products, no efflorescence
Does not increase alkali content, effectively inhibits ASR risk 
Higher surface gloss after treatment 

New Concrete Floors
Curing Period: Cure concrete for 7-28 days after pouring, ensure complete hardening 
Surface Preparation: Ensure surface is clean, dry, and free of oil/grease
First Application: Apply uniformly with low-pressure sprayer, coverage 0.2-0.4 kg/m²
Penetration Reaction: Keep surface wet for >30 minutes, light brushing can aid penetration 
Remove Excess: Remove excess material with squeegee or vacuum
Drying: Allow 24 hours for natural drying
Second Application (Optional): Apply second coat for higher hardness
Polishing (Optional): Combine with grinding/polishing process for high gloss

Existing Floor Renovation
Grinding: Open grind with metal or resin diamond tools to remove old coatings and contaminants
Cleaning: Thorough vacuuming to ensure clean surface
Hardener Application: Apply as above method
Fine Grinding: Progressive polishing with different grit sizes
Protection: Optional application of polishing aid or sealer

Precautions
Application Temperature: 5℃-40℃ 
DO NOT Dilute: Product is ready-to-use, do not dilute with water 
Avoid Freezing: Product freezes below 0℃, can be used normally after thawing 
Protection: Wear protective goggles and gloves during application

Dosage and packaging

Packaging Specifications:
5 gallon/20 kg pail 
55 gallon/220 kg drum 
275 gallon/1000 kg IBC tote 

Storage Conditions:
Cool, dry place away from direct sunlight
Keep sealed to prevent contamination
Shelf Life: 12 months (unopened original packaging) 

Comparison with other concrete hardening agents

Product execution standards
JC/T 2158-2012 "Penetrating Liquid Hardener
Meets GB 8624 Class A1 fire rating requirements
VOC content meets national environmental standards
UL 2818 Greenguard Gold Certified (select products) 
Contributes to LEED Green Building Certification (IEQ credit)