MARMOLATEX-AC47

MARMOLATEX-AC47 is a versatile, high-performance acrylic copolymer latex emulsion featuring ~39% active solids content, engineered specifically for cementitious waterproofing applications and as a multi-functional modifier and admixture for cement mortars, plasters, screeds, and tile adhesives. Its advanced formulation enhances the flexibility, tensile adhesion bond strength, and overall mechanical durability of cement-based systems, significantly minimizing shrinkage cracking while imparting superior resistance to moisture, water ingress, and environmental stress.

When blended in a 1:1 ratio by weight with Portland cement, MARMOLATEX-AC47 forms an elastomeric, impermeable waterproofing slurry coating suitable for internal and external wet areas. When used as a mortar admixture replacing part of the mixing water, it improves cohesive strength, workability, and impact resilience across masonry, concrete repairs, and tile fixing installations.

Key Highlights

• Enhanced Flexibility: Significantly improves the flexural flexibility of cement mortars, reducing the risk of shrinkage cracking and accommodating subtle substrate movement.
• Superior Waterproofing Barrier: Provides excellent water impermeability and resistance to hydrostatic pressure when used in 1:1 cementitious waterproofing systems.
• Boosted Adhesion: Dramatically improves adhesive bonding to masonry, concrete, brickwork, stone, and plaster substrates.
• Increased Durability: Enhances mechanical properties, wear resistance, and toughness, making mortars resilient in demanding high-traffic environments.
• Multi-Functional Versatility: Suitable for use both as a brush-applied waterproofing slurry membrane and as an admixture in repair mortars, renders, and tile adhesives.
• Extended Pot Life: Workable pot life of 2 to 4 hours, facilitating uninterrupted application across large-scale projects.
• Excellent Workability: Smooth liquid consistency that disperses rapidly during mechanical mixing without clumping.

Technical Specifications

Parameter / Property	Specification / Value
Product Name	MARMOLATEX-AC47
Chemical Base	Acrylic copolymer latex emulsion
Physical Appearance	Milky white liquid
Density / Specific Gravity	~1.0 g/cm³
pH Value	9.0 – 11.0 (Alkaline)
Solid Content	~39% active polymer solids
Application Temperature	+5°C to +35°C
Water Resistance	Excellent (impermeable barrier in 1:1 cement slurry)
Flexibility	Significantly improved in modified mortars and slurries
Pot Life	2 – 4 hours (depending on ambient temperature)
Curing Time	Minimum 24 – 48 hours before heavy use or loading
Standard Packaging	1 Litre, 5 Litres, and 20 Litres containers
Shelf Life	6 months in original, unopened packaging
Storage Temperature / Conditions	Store in a cool, dry place away from moisture, direct sunlight, and freezing conditions

Application & Handling

1. Surface Preparation The substrate must be structurally sound, clean, and completely free from dust, oil, grease, laitance, curing compounds, algae, efflorescence, and loose friable particles. Clean the concrete or masonry surface thoroughly using high-pressure water washing or mechanical wire brushing. Crucial Step (Pre-Wetting): Slightly dampen the substrate with clean potable water to achieve a Saturated Surface Dry (SSD) condition before applying the MARMOLATEX-AC47 mixture. Do NOT apply on completely dry substrates or leave standing pools of water.

2. Mixing & Proportioning Instructions

a. For Waterproofing Applications Mix MARMOLATEX-AC47 with fresh Portland cement in a 1:1 ratio by weight (1 kg latex to 1 kg cement) to form a flexible waterproofing slurry. Blend thoroughly using a low-speed mechanical stirrer (300–400 RPM) for 3 minutes until a smooth, lump-free, creamy consistency is achieved. Apply in two coats using a stiff paintbrush or roller, ensuring full and uniform coverage of the substrate. Apply the second coat perpendicular to the first once touch dry (4–6 hours).

b. For Mortar Admixture (Repair Mortars, Plasters & Screeds) Use MARMOLATEX-AC47 as an admixture by replacing part of the mixing water with the latex. Recommended dosing: Mix 300 ml of MARMOLATEX-AC47 to 2 parts clean water (or as specified for custom screeds/mortars). Blend dry sand and cement (typically 1:3 or 1:4 ratio), then add the pre-diluted latex liquid gradually while mixing until a homogeneous, workable mortar consistency is achieved. Apply the modified mortar using standard trowel techniques.

c. For Tile Adhesives Integrate MARMOLATEX-AC47 into cementitious tile adhesives to improve bond strength, deformability, and water resistance in wet and exterior installations.

3. Curing Schedule Allow the applied mortar or waterproofing slurry to cure for at least 24 to 48 hours. Protect newly applied surfaces from direct intense sunlight, desiccating dry winds, rain, or frost during the curing process. For exterior cementitious mortars, perform light water mist curing after 24 hours to ensure complete cement hydration.

Do’s

• Ensure the substrate is clean, sound, and free from contaminants before application.
• Slightly dampen highly absorbent surfaces to SSD condition before applying the MARMOLATEX-AC47 mixture.
• When used as a mortar admixture, replace part of the mixing water with MARMOLATEX-AC47 as recommended.
• Mix thoroughly using a low-speed mechanical stirrer until a smooth and homogeneous consistency is achieved.
• Allow the applied system to cure for at least 24 to 48 hours before heavy use or water testing.
• Reseal containers tightly immediately after dispensing.

Don’ts

• Do NOT apply on dirty, dusty, oily, or contaminated surfaces.
• Do NOT mix the product with any unauthorized additives or chemicals.
• Do NOT apply the mixture onto completely dry substrates without pre-dampening.
• Do NOT expose freshly installed tiles or coatings to heavy traffic before curing.
• Do NOT store the product in direct sunlight or extreme heat.
• Do NOT apply in temperatures below +5°C or exceeding +35°C.

Storage & Safety

Storage: Store in a cool, dry place away from moisture and frost. Keep the packaging tightly sealed when not in use.

Handling: Wear protective gloves, safety goggles, and suitable work clothing while handling the product. Ensure adequate ventilation in enclosed spaces.

First aid:

• Skin Contact: Wash thoroughly with clean water and soap. If irritation persists, seek medical advice.
• Eye Contact: Rinse eyes immediately with copious clean water for at least 15 minutes. Consult a physician.
• Inhalation: Move person to fresh air immediately. Seek medical attention if breathing difficulties occur.
• Ingestion: Do not induce vomiting. Rinse mouth with clean water and seek immediate medical assistance.
• Disposal: Dispose of product residues and packaging according to local environmental regulations. Do not release into drains or watercourses.

Frequently Asked Questions

What is MARMOLATEX-AC47?
MARMOLATEX-AC47 is a versatile acrylic copolymer latex emulsion (~39% solids content) engineered for cementitious waterproofing slurries and as an admixture to enhance mortars, screeds, and tile adhesives.

What does the "AC47" designation signify?
It designates an advanced Acrylic Copolymer (AC) latex formulation engineered for high flexibility, UV resistance, and excellent bonding with Portland cement systems.

How does MARMOLATEX-AC47 differ from MARMOLATEX-SBR47?
While SBR47 utilizes styrene-butadiene rubber chemistry (~47% solids), MARMOLATEX-AC47 utilizes an acrylic copolymer emulsion (~39% solids) that offers outstanding UV color stability, non-yellowing characteristics, and acrylic polymer flexibility.

How is MARMOLATEX-AC47 used for waterproofing?
It is mixed with Portland cement in a 1:1 ratio by weight to create a brush-applied, elastomeric, waterproof slurry membrane.

Why is MARMOLATEX-AC47 added to cement mortars?
It replaces part of the mixing water to significantly improve flexural flexibility, reduce shrinkage cracking, boost tensile bond adhesion, and resist water absorption.

Why must substrates be dampened before application?
Pre-dampening to a Saturated Surface Dry (SSD) condition prevents dry, porous masonry from absorbing the gauging water from the mix prematurely, ensuring proper cement hydration and bonding.

How many coats of waterproofing slurry should be applied?
Apply two coats using a brush or roller. The second coat should be applied perpendicular (at right angles) to the first once the first coat is touch dry (approx. 4–6 hours).

What is the pot life of MARMOLATEX-AC47 mixtures?
The workable pot life is approximately 2 to 4 hours at 25°C, depending on ambient temperature and humidity.

What is the curing time before heavy traffic or loading?
Allow the applied slurry or modified mortar to cure for at least 24 to 48 hours before subjecting the surface to heavy traffic, tile fixing, or water ponding tests.

Can MARMOLATEX-AC47 be used with tile adhesives?
Yes. Adding MARMOLATEX-AC47 to cementitious tile adhesives enhances bond strength, deformability, and moisture resistance on demanding substrates.

Can it be used for concrete repairs and patching?
Yes. Modified mortars formulated with MARMOLATEX-AC47 provide high adhesion and crack resistance, making them ideal for patching spalled concrete, honeycombing, and masonry resurfacing.

Is MARMOLATEX-AC47 suitable for exterior applications?
Yes. Its acrylic polymer backbone provides exceptional weather resistance, UV stability, and tolerance to thermal fluctuations and freeze-thaw cycles.

What is the density and pH of MARMOLATEX-AC47?
It has a density of ~1.0 g/cm³ and an alkaline pH between 9.0 and 11.0, ensuring full compatibility with the alkaline environment of cement.

What tools are recommended for application?
For waterproofing slurries, use a stiff masonry brush, roller, or low-pressure sprayer. For modified mortars, use standard trowels, floats, and straightedges.

What is the dilution ratio when using it as a mortar admixture?
Mix 300 ml of MARMOLATEX-AC47 with 2 parts clean water, then use this gauging liquid to hydrate the sand-cement mortar mix.

What is the shelf life of MARMOLATEX-AC47?
It has a shelf life of 6 months from manufacture in original, unopened packaging stored between +5°C and +35°C in cool, dry conditions.

What container sizes are available?
MARMOLATEX-AC47 is packaged in 1 Litre, 5 Litres, and 20 Litres containers.

Can MARMOLATEX-AC47 be applied on painted or glazed surfaces?
No. Painted, glazed, or non-absorbent surfaces must be mechanically prepared (grinding, scarifying, or sandblasting) to expose clean, open concrete before application.

What personal protective equipment (PPE) should be worn?
Wear protective gloves, safety goggles, and suitable work clothing. Ensure adequate cross-ventilation in enclosed spaces.