Chemqua ECS (MB)

3-component, self-leveling, water-thinnable epoxy cementitious floor screed mortar

Product Description

Chemqua ECS (MB) is a 3 component self-levelling, odour free, voc free water based epoxy cementitious floor screed mortar. It is an ideal solution for the problems arising due to osmotic pressure created by the rising water vapour from the new concrete/concrete exposed to water from the ground

Uses

As a moisture barrier on new concrete
As a levelling screed for chemtop and chemqua topcoats
As a floor repair mortar
Slabs without a damp proof membrane and a risk of rising moisture
Places where chemical odour occurs during application are unacceptable, especially in closed spaces

Product Data

Appearance / colour:	Chemqua ECS MB[R] Resin :	White liquid
	Chemqua ECS MB[H] Hardener:	Clear liquid
	Aggregates:	White powder

Salient features

Good adhesion to damp surfaces.
VOC-free, odourless
Prevents blistering and debonding of resin-based topcoats caused due to rising water.
vapour from damp concrete
Easy to apply and self-levelling
Water vapour permeable but impenetrable for liquids
Can be applied to wet concrete
Outstanding bonding to wet and dry concrete
Coefficient of expansion and contraction similar to concrete.

Chemical Resistance

Property	Test Method	Value and Unit
Mixing Ratio	NA	Pre-weighed kit
Pot Life @ 30 °C	CPI 1002	30–35 minutes
Surface Dry	CPI 1002	4–5 hours
Hard Dry [Open for foot traffic]	CPI 1002	24 Hours
Coverage for 2 mm	CPI 1010	6–8 sq.m area @ 2000 microns thickness

Technical information

Property	Test Method	Value and Unit
Compressive Strength	ASTM C 579	>540 Kg/cm² after 28 days
Flexural Strength	ASTM C 580	>140 Kg/cm² after 28 days
Tensile Strength	ASTM C 307	>80 Kg/cm² after 28 days
Pull off Adhesion Test	ASTM D 4541	Concrete Failure @ 18 Kg/cm²
Abrasion Resistance [Taber]	ADTM D 4060	60 mg loss
Shore Hardness	ASTM D 2240	D 80
Vapour Permeability	ASTM E96:90	15–20 gm/m²/mm/24 hr
Shelf Life	ASTM E96:90	12 months in original unopened container when stored between 5–40°C

Method of Application

All Chemsol Products are recommended to be applied only by Approved Applicators and should be handled after using proper PPEs like Gloves, mask, goggles etc.

Application conditions

Note: The substrate temperature must be at least 30 °C above the prevalent dew point temperature to reduce chances of condensation on the floor.

Substrate Quality

The concrete substrate must be sound and of sufficient compressive strength (minimum 200 Kg/cm2) with a minimum pull-off strength of 15 Kg/cm2. The substrate must be clean, dry, and free of all contaminants such as dirt, oil, grease, coatings, and surface treatments etc. If required, apply a test area first. In casethe application is on green/ damp concrete, ensure that there is no standing/ponding water on the surface.

Substrate Preparation

Concrete substrates must be prepared mechanically using abrasive blast cleaning, scarifying, or grinding equipment to remove cement laitance and achieve an open-textured surface. Remove weak concrete and expose surface defects such as blowholes and voids. Repairs to the substrate, filling of blowholes/voids, and surface levelling must be carried out using appropriate products. Ensure that the dust, loose and friable material is completely removed from all surfaces by brush and vacuum before application of the product. The concrete substrate has to be primed or levelled with Chemqua Prime in order to achieve an even surface. Allow the primer to cure for 5-6 hours. After this, apply a screed coat of ChemQua ECS.

Mixing

Stir the resin part mechanically. Add hardener to it and stir continuously for 2 minutes until a homogeneous mass is obtained. Add aggregates to this mixture and continue stirring for a further 3 minutes with a motorised helical paint stirrer until a uniform mix has been obtained. Overmixing must be avoided to minimise air entrainment. Note that the mixture has a stipulated pot life, hence the laying should immediately commence after mixing the contents.
This system involves an epoxy cement hybrid chemistry; thus, it requires 28 days for full cure. However, due to the use of complex quick-set technology, it achieves 50% strength in 3 days and 90% strength in 7 days. The application of vapour-permeable top coats can immediately be done after the surface is tack-free; however, for the application of Vapour impermeable topcoats like Chemtop, Floorchem, Chemdeck, etc., you have to wait till the moisture content drops below 5. % The following schedule can be used as a guideline for the same

Temp. (°C)	Wait Time
10°C	48 hours
20°C	36 hours
35°C	24 hours

Cleaning of Tools

Clean all tools and application equipment with water immediately after use. Hardened and/or cured material can only be removed mechanically.

Packing

Chemqua ECS (MB) Resin, Hardener, and aggregates are available in pre pre-weighed kit which covers 6-8 sq.m area with an approximate thickness of 2 mm.

Handling and safety

Keep the containers tightly sealed when not in use. Avoid skin contact and inhalation of fumes (if any). While spraying, it is advised to wear a mask. If it comes in contact with the body, wash affected parts with plenty of soap and water. In case of persistent irritation, contact a physician.

*Disclaimer: The Information provided is based on our experience, thorough investigations & sophisticated testing methods, but due to the vast number of applications and usage methods, Chemsol Polymer Industries cannot accept responsibility of any kind for any particular result. It is the responsibility of the user to verify the suitability of the product for their end use and in accordance with the rules and regulations of that country/territory. All information provided pertaining to our products should be treated only as a guidance tool without any guarantee or warranty of any sort.

* All CPI test methods are our scientifically designed Internal test methods which can be shared upon request