Construction Chemical Applications
Choose construction chemical additives from the finished material and the specific performance failure you need to control, rather than selecting an additive name in isolation.
Start with the Failure, Not the Additive
Formulation questions often begin with product names: “Which HPMC should I use?” or “Which RDP is best?” These inquiries remain incomplete until the finished system demands are defined.
A tile adhesive slipping vertically requires a different rheological adjustment from one suffering from premature drying. A self-leveling screed with high air voids requires a different solution from one with poor slump flow.
What finished material are you producing? What property is failing? At what manufacturing or application stage does it fail? What standard test must the cured system pass?
Match the Formulation Stage to the Additive Family
MICHEM functional additives govern distinct physical and chemical mechanisms across fresh application and hardened stages.
| Formulation Need | Product Family Direction | Main Question to Answer |
|---|---|---|
| Water retention, consistency, open time, sag or slip | Cellulose & Starch Ethers | How should the fresh material hold water and structure under application shear? |
| Adhesion, cohesion, flexibility, or polymer modification | Redispersible Polymer Powder (RDP) | What hardened polymer contribution does the mortar need after drying and curing? |
| Water reduction and cement dispersion | Superplasticizers (PCE) | How much flow is required without increasing water, and how long must that flow remain? |
| Early-age or post-crack crack control | Construction Fibers | What crack mechanism and crack-opening range must be controlled? |
| Air reduction and density optimization | Defoamers (Powder / Liquid) | Is unwanted entrained or trapped air reducing density, flow, or compressive strength? |
| Water repellency & capillary reduction | Silicone Hydrophobic Agents | Is the target reduced capillary water uptake rather than structural waterproofing? |
| Inorganic mineral coloration | Iron Oxide Pigments | How will shade be controlled through dispersion, binder background, and curing? |
| Gypsum working-time control | Gypsum Retarder | How long must the gypsum remain workable before predictable setting begins? |
| Cement acceleration & early strength | Calcium Formate | What early-age property needs to develop faster without destroying workable time? |
Dry-Mix Mortar Applications
Dry-mix mortar is an engineered balance between powder manufacturing, water demand, fresh rheology, and hardened durability.
Tile Adhesive
Balanced water retention, open time extension, non-slip vertical stability, and flexible polymer-modified bonding.
Go to Tile Adhesive →
Tile Grout
Joint filling fluidity, shrinkage control, reduced water uptake, color uniformity, and scratch-resistant surface hardness.
Go to Tile Grout →
Wall Putty & Skim Coat
Creamy troweling workability, anti-sag body, smooth sanding response, and uniform surface finish without shrinkage cracks.
Go to Wall Putty →
EIFS & ETICS Systems
Insulation board adhesion, reinforcing mesh embedment, thermal movement accommodation, and exterior weatherproofing.
Go to EIFS / ETICS →
Cement Renders & Plasters
Machine pumpability, high water retention against porous masonry, sag resistance, and crack-free curing.
Go to Renders & Plasters →
Gypsum-Based Mortar
Controlling rapid dissolution and crystallization kinetics to balance open time, easy leveling, and rapid early strength.
Go to Gypsum Mortars →
Self-Leveling Compounds
High fluid spread, segregation resistance, rapid deaeration, pinhole elimination, and fast walkability.
Go to Self-Leveling →
Repair Mortar
Substrate wetting, high build thickness, low drying shrinkage, bond strength, and accelerated early mechanical strength.
Go to Repair Mortars →
Waterproof Mortar
Reducing capillary water suction while balancing polymer film flexibility, crack-bridging, and substrate adhesion.
Go to Waterproof Mortars →Concrete & Infrastructure Applications
Admixture performance calibrated for water reduction, flow retention, cycle times, structural crack control, and durability.
Ready-Mix Concrete
Slump retention across transit times, high water reduction, pumpability, and compatibility with blended cement and SCMs.
Go to Ready-Mix →
Precast Concrete
Accelerated demolding cycle times, rapid early compressive strength, high surface finish quality, and mold filling flow.
Go to Precast Concrete →
Industrial Floors & Slabs
Micro/macro fiber crack control, abrasion resistance, joint spacing expansion, and residual load-bearing capacity.
Go to Industrial Floors →
Shotcrete & Tunnels
Hose pumpability, accelerator compatibility, low rebound waste, fiber retention, and early structural build thickness.
Go to Shotcrete →
Roads & Pavements
High flexural fatigue strength, thermal shrinkage crack resistance, slipform workability, and freeze-thaw durability.
Go to Roads & Pavements →
Concrete Crack Control
Differentiating plastic shrinkage micro-crack mitigation from post-crack structural macro-synthetic load transfer.
Go to Crack Control →Coatings & Decorative Materials
Specialized additives engineered for particle suspension, application rheology, color stability, and environmental resistance.
Water-Based Coatings
Pigment suspension, in-can stability, roller/brush spatter resistance, leveling flow, and deaeration without film defects.
Go to Water-Based Coatings →
Architectural Coatings
Substrate hiding power, aesthetic film smoothness, batch shade uniformity, and long-term exterior UV weatherability.
Go to Architectural Coatings →
Decorative Mortars
Textured troweling feel, sag resistance, efflorescence suppression, and homogeneous inorganic mineral coloration.
Go to Decorative Mortars →
Colored Concrete
Controlling shade from iron oxide pigment dispersion and grey/white cement backgrounds to curing and surface aging.
Go to Colored Concrete →One Failure Can Involve Several Additive Families
Troubleshooting becomes inefficient when every defect is assigned to a single additive. For example, short open time in tile adhesive may involve cellulose ether, substrate absorption, ambient heat, water-to-cement ratio, and cement reactivity.
The systematic screening sequence:
Use Product Pages and Application Pages for Different Decisions
Product Pages explain what an additive family changes and how to compare grades. Application Pages define what a finished material needs and which combination of functions to investigate.
What Information to Provide for Technical Selection
Requests like “send your best HPMC” or “need concrete fiber” are too broad for efficient technical support. To receive a targeted formulation recommendation, provide:
- Finished Material & Target Standard: e.g., C2TE tile adhesive (EN 12004) or SLU floor screed.
- Binder System & Raw Materials: Cement type, gypsum source, limestone filler, and aggregate gradations.
- Current Additives & Water Ratio: Active polymers, dosage rates, and mixing water demand.
- Specific Failure Mode: Sagging, rapid skinning, poor flow retention, low 24h strength, or surface cracking.
Frequently Asked Questions
Essential guidance on selecting additives through the MICHEM application architecture.
Should I select the additive or the application first?
Start with the application when solving a finished-product performance defect. Start with the Product section when comparing specific polymer or chemical grades.
Which MICHEM products are central to dry-mix mortar?
Cellulose ethers (HPMC/HEMC), starch ethers, RDP, powder defoamers, silicone hydrophobic agents, gypsum retarders, and calcium formate accelerators.
Which MICHEM products apply to concrete and infrastructure?
Polycarboxylate ether (PCE) superplasticizers, micro/macro construction fibers, and specialized early-strength accelerators.
Does one additive solve the entire formulation challenge?
No. Finished formulations are multi-variable systems. Each additive must be assigned a specific physical or chemical role and qualified together.
Can I copy a dosage from another application?
No. Differences in cement mineralogy, aggregate fines, water demand, ambient climate, and application method change dosage response substantially.
Do ASTM or EN standards apply to raw additives directly?
Most international standards evaluate the finished composite mortar or concrete system rather than the raw chemical additive in isolation.
Start with the System You Need to Make Reliable
Follow the engineering sequence: Finished Material → Performance Target → Failure Mechanism → Additive Function → Formulation Trial → Standardized Product Test.