construction concrete chemicals

ASR Inhibitor (Lithium Nitrate for Alkali-Silica Reaction)

CAS: 7790-69-4

Lithium nitrate-based ASR inhibitor prevents alkali-silica reaction (ASR) in concrete by altering the chemistry of the reactive gel formed between alkali hydroxides and reactive silica aggregates, preventing the expansive gel from absorbing water and causing cracking. It is the most effective and widely used chemical solution for ASR mitigation and is applied at dosages based on the Li/(Na+K) molar ratio, typically 0.74 or higher.

construction concrete chemicals

Acrylic Flexible Tile Grout

CAS: 9003-01-4

Acrylic-based flexible tile grout is a polymer-modified cementitious grout that combines the durability and chemical resistance of cement with the flexibility and color retention of acrylic polymers. It provides excellent stain resistance, crack bridging capability, and resistance to thermal and mechanical movement, making it ideal for demanding tile installation in kitchens, bathrooms, and exterior applications.

construction concrete chemicals

Acrylic Membrane Curing Compound

CAS: 9003-01-4

Acrylic-based membrane curing compound is applied to freshly placed concrete surfaces to form a continuous, water-impermeable film that retains moisture for adequate hydration. It provides a reliable, cost-effective alternative to wet curing methods such as burlap or ponding, especially for large horizontal surfaces like slabs, pavements, and bridge decks. Available in clear and white-pigmented formulas; white-pigmented types also reduce surface temperature in hot weather.

construction concrete chemicals

Acrylic Redispersible Polymer Powder for Mortar

CAS: 9003-01-4

Acrylic-based redispersible polymer powder (RDP) is a spray-dried acrylic latex that provides superior weathering resistance, UV stability, and water resistance compared to VAE-based RDPs. When incorporated into dry-mix mortars, it forms a durable flexible film that improves adhesion, tensile bond strength, and long-term durability. It is especially valued in exterior applications such as ETICS base coats, waterproofing mortars, and exterior tile adhesives.

construction concrete chemicals

Alkali-Resistant (AR) Glass Fiber for Concrete

Alkali-resistant (AR) glass fiber is a zirconia-containing glass fiber specifically engineered to withstand the highly alkaline environment of Portland cement concrete. It is used in glass fiber reinforced concrete (GFRC) for thin precast elements, facade panels, and decorative products, providing tensile reinforcement without the corrosion risk of steel. AR glass fiber maintains long-term tensile strength in concrete due to its high ZrO2 content (≥16%).

construction concrete chemicals

Amino Alcohol Rust-Inhibiting Admixture

CAS: 141-43-5

Amino alcohol-based mixed-type corrosion inhibitor (also marketed as organic inhibitor or amine-based inhibitor) provides cathodic and anodic protection for steel reinforcement in concrete through adsorption onto the steel surface. Unlike calcium nitrite, it is organic, low-toxicity, and migrating — meaning it can penetrate existing concrete when applied as a surface treatment to reach embedded steel. Typical dosage: 3–10 L/m³.

construction concrete chemicals

Basalt Fiber Concrete Reinforcement

Basalt fiber is a natural mineral fiber produced by melting volcanic basalt rock and drawing it into continuous filaments. As a concrete reinforcement, chopped basalt fiber offers superior tensile strength, excellent alkali resistance, and higher thermal stability compared to polypropylene and glass fibers. It is an emerging sustainable alternative to traditional fibers, with applications in structural concrete, shotcrete, and composites where corrosion resistance and high strength are required.

construction concrete chemicals

Calcium Chloride Early Strength Accelerator

CAS: 10043-52-4

Calcium chloride is the most widely used accelerating admixture for concrete, shortening setting time and dramatically increasing early compressive strength in cold-weather construction. It is effective at low temperatures where normal cement hydration slows significantly. Due to its chloride content, its use is restricted to plain (non-reinforced) concrete or specific applications as per ASTM C494 Type C and E.

construction concrete chemicals

Calcium Formate Winter Construction Accelerator

CAS: 544-17-2

Calcium formate is a chloride-free, eco-friendly accelerating admixture that promotes early strength development in concrete and mortar, particularly valuable in cold-weather and winter construction. It accelerates both the initial and final setting of Portland cement without introducing corrosive chlorides, making it suitable for reinforced concrete and prestressed structures. Typical dosage is 1–3% by cement weight.

construction concrete chemicals

Calcium Nitrite Concrete Corrosion Inhibitor

CAS: 13780-06-8

Calcium nitrite is the most widely proven anodic corrosion inhibitor for steel reinforcement in concrete, passivating the steel surface and raising the chloride threshold concentration required to initiate corrosion. Applied at 10–30 L/m³, it can extend the service life of reinforced concrete structures in chloride-rich environments (marine, de-icing salts) by 2–4 times. It also provides a mild early-strength acceleration effect.

construction concrete chemicals

Concrete Form Release Agent (Mold Oil)

Concrete form release agent (mold oil) is applied to formwork surfaces to prevent concrete from bonding to the form, ensuring clean, defect-free stripping and prolonging the life of formwork. Modern release agents are available in chemical reactive (fatty acid-based), barrier (oil-based), and water-based emulsion types. The choice of release agent significantly affects the surface finish quality of the formed concrete.

construction concrete chemicals

Crystalline Waterproofing Additive (Calcium Silicate Hydrate)

CAS: 1344-95-2

Crystalline waterproofing additive works by generating calcium silicate hydrate (CSH) crystals that fill and block concrete capillary pores and micro-cracks, providing long-term integral waterproofing. Unlike surface-applied membranes, it becomes a permanent part of the concrete matrix and self-seals new cracks up to 0.4 mm wide throughout the structure's life. Dosage is typically 2–4% by cement weight.

construction concrete chemicals

Epoxy Injection Resin for Crack Repair

CAS: 25068-38-6

Low-viscosity epoxy injection resin is a two-component structural adhesive system (resin + hardener) designed for pressure injection into hairline cracks (0.05–5 mm) in concrete, masonry, and stone to restore structural integrity. The cured epoxy achieves tensile strength exceeding the concrete substrate, creating a monolithic repair. Formulations are available in standard, fast, and low-temperature cure versions.

construction concrete chemicals

Expansive Agent CSA (Calcium Sulfoaluminate)

CAS: 65997-16-2

Calcium sulfoaluminate (CSA)-based expansive agent compensates for concrete shrinkage by generating controlled expansion through ettringite formation during cement hydration. Used at 6–12% replacement of cement, it is widely applied in compensating-shrinkage concrete, self-stressing concrete, and crack-resistant structures such as water tanks and basement walls. Compliant with ASTM C845 and Chinese GB/T 23439.

construction concrete chemicals

Fly Ash Class C Supplementary Cementitious Material

CAS: 93821-59-1

Class C fly ash is a high-calcium by-product of coal combustion that exhibits both pozzolanic and self-cementitious properties. Used at 15–40% replacement of cement, it improves workability, reduces heat of hydration, enhances long-term strength, and contributes to sustainable construction by replacing a significant proportion of clinker. Class C fly ash is particularly valued in mass concrete, pavement concrete, and high-volume fly ash (HVFA) mixes.

construction concrete chemicals

Ground Granulated Blast Furnace Slag (GGBS)

CAS: 65996-69-2

Ground granulated blast furnace slag (GGBS) is a latent hydraulic binder obtained by quenching molten blast furnace slag in water, then grinding to high fineness. Used at 30–70% replacement of Portland cement, GGBS significantly reduces heat of hydration, improves sulfate resistance, reduces chloride permeability, and contributes to a lower carbon footprint. Long-term strength continues to develop well beyond 28 days.

construction concrete chemicals

Hydroxypropyl Methylcellulose (HPMC) for Mortar & Tile Adhesive

CAS: 9004-65-3

Hydroxypropyl methylcellulose (HPMC) is a non-ionic cellulose ether widely used as a water retention agent, thickener, and workability improver in dry-mix mortar and tile adhesive formulations. It dramatically reduces water loss to porous substrates, ensuring adequate cement hydration and improving bond strength. HPMC also imparts anti-sag, open time, and smooth application properties critical in tile and plaster applications.

construction concrete chemicals

Integral Waterproofing Agent (Hydrophobic Admixture)

CAS: 112-02-7

Integral hydrophobic waterproofing agent is a fatty acid salt-based or stearate-based admixture that lines the capillary pores of concrete with hydrophobic compounds, reducing water absorption and enhancing durability. Unlike crystalline systems, it operates through hydrophobicity rather than pore-blocking, providing excellent resistance to driving rain and capillary suction. It is suitable for above-ground concrete elements, retaining walls, and masonry.

construction concrete chemicals

Lignosulfonate Retarder (Water Reducer & Set Retarder)

CAS: 8062-15-5

Lignosulfonate-based concrete admixture is a natural by-product of the pulp industry, functioning simultaneously as a normal-range water reducer (8–12%) and a mild set retarder. It is one of the most cost-effective concrete admixtures available and is widely used where modest workability improvement and retardation of 1–3 hours are needed. Available in calcium and sodium salt forms.

construction concrete chemicals

Lithium Silicate Concrete Densifier & Hardener

CAS: 10102-24-6

Lithium silicate concrete densifier is a penetrating chemical hardener that reacts with calcium hydroxide (Ca(OH)2) in the concrete to form additional insoluble calcium silicate hydrate (CSH), permanently filling and sealing the capillary pores. It dramatically increases surface hardness, abrasion resistance, and dust-proofing of concrete floors. Lithium silicate penetrates deeper than sodium or potassium silicate and produces smaller, more stable reaction products.

construction concrete chemicals

Melamine Superplasticizer (SMF Plasticizer)

CAS: 25036-13-9

Sulfonated melamine formaldehyde (SMF) condensate is a high-performance concrete plasticizer offering water reduction rates of 20–25% with minimal retardation. It produces light-colored concrete suitable for architectural applications and is especially valued in floor screeds and industrial flooring where appearance and early strength are critical. SMF is compatible with gypsum-based systems as well as Portland cement.

construction concrete chemicals

Metakaolin Pozzolanic Additive

CAS: 92704-41-1

Metakaolin is a highly reactive pozzolan produced by calcination of kaolin clay at 600–800°C, removing chemically bound water to create a highly disordered alumino-silicate phase. Used at 5–20% replacement of cement, it rapidly reacts with calcium hydroxide to produce dense, low-permeability concrete with high early strength. Metakaolin also reduces concrete efflorescence and is favored in white and architectural concrete.

construction concrete chemicals

Methyl Cellulose (MC) for Dry-Mix Mortar

CAS: 9004-67-5

Methyl cellulose (MC) is a non-ionic cellulose ether used in dry-mix mortars, renders, and plasters as a water retention agent and thickener. It dissolves readily in cold water and provides stable viscosity, good workability, and controlled water retention. MC is particularly valued in masonry mortars, render coats, and floor leveling compounds where consistent water management is critical for proper curing and bond development.

construction concrete chemicals

Nano Silica Concrete Densifier & Strength Enhancer

CAS: 7631-86-9

Colloidal nano silica is an ultra-fine amorphous silicon dioxide suspension with particle sizes of 5–100 nm, providing a pozzolanic reactivity many times greater than microsilica. At dosages of 1–5% by cement weight, it dramatically accelerates early strength development, refines pore structure, reduces permeability, and improves the ITZ (interfacial transition zone) bond between cement paste and aggregates. It is used in ultra-high-performance concrete (UHPC) and demanding infrastructure applications.