Cem One – fast-setting cement for floor screeds

CEM ONE

DECLARATION OF PRODUCT CHARACTERISTICS
According with Regulation (BG) RD-02-20-1/2015

№ 20190819-01-D

1. Unique identification code of product type:
CEM ONE

2. National requirements (Minister of Regional Development and Public Works, national regulation)
Technical specification (national standard, Bulgarian technical approval) applicable to the construction product:
BDS EN 13892-2 – Methods of test for screed materials – Part 2: Determination of flexural and compressive strength

3. Intended use or uses of the construction product in accordance with the national requirements, as foreseen by the manufacturer:
Special fast-setting cement for floor screeds with accelerated drying.

4. Name, registered trade name or registered trade mark and contact address of the manufacturer:
TERAZID Ltd.
5 „5004” Str., Gara Iskar, Sofia 1528, Bulgaria
tel. +35929799971
e-mail: office@terazid.com

5. Where applicable, name and contact address of the authorised representative:
Not applicable.

6. Where applicable, name and contact address of the notified body to assess compliance with national requirements:
1950 – The Research Institute of Building Materials (NIISM), Sofia, Bulgaria
Test protocol № 1060-1/03.12.2018

7. Declared performance:
Awaiting content for completion.
Let me know if you’d like to continue with the declared performance details.

Characteristics	Performance	Test method
Bulk weight	1830 kg/m³	BDS EN 1015-6
Capillary absorption of water	0,07 kg/m²·min0.5	BDS EN 1015-18
CEM ONE / sand ratio: 1:4
Compressive strength (after 28 days)	29.4 N/mm²	BDS EN 13892-2
Flexural strength (after 28 days)	6.4 N/mm²	BDS EN 13892-2
CEM ONE / sand ratio: 1:6
Compressive strength (after 28 days)	18.2 N/mm²	BDS EN 13892-2
Flexural strength (after 28 days)	4.6 N/mm²	BDS EN 13892-2
CEM ONE / sand ratio: 1:7
Compressive strength (after 28 days)	16.1 N/mm²	BDS EN 13892-2
Flexural strength (after 28 days)	4.1 N/mm²	BDS EN 13892-2

8. The characteristics of the product identified in point 1 are in conformity with the declared performance in point 7.
This declaration of performance is issued under the sole responsibility of the manufacturer identified in point 4, or the authorised representative identified in point 5.

CEM ONE

Special fast-setting cement for floor screeds with accelerated drying

PURPOSE
CEM ONE is a special cement-based hydraulic binder for preparing floor screeds with accelerated drying. The product is used for interior and exterior application of levelling floor screeds over different building surfaces, where fast application of finishing coverings or waterproofing is required. The drying ability of CEM ONE within 24 hours to 4 days makes it suitable for:

• Floor screeds, ready for walking after 24 hours and for carpet, PVC, or wooden covering after 4 days

• Floor screeds, ready for ceramic coverings after 24 hours and stone coverings after 48 hours

• Floor screeds with floor heating systems, without the need for special additives

PROPERTIES

• fast-drying
• normal hardening
• controlled binding
• high strength characteristics

PREPARATION OF THE BASE
The base should be strong, dry, and free of oil, dust, sand, and other contaminants or separating layers. All unstable areas should be mechanically removed.

CHARACTERISTICS AND TECHNICAL DATA

• Colour: grey

• Base: cement

• Bulk weight: over 1830 kg/m³

• Work temperature: +5°C to +35°C

• Time for bucket stay: 60 minutes

CEM ONE/sand ratio: 1:4

• Compressive strength: 29.4 N/mm²

• Flexural strength: 6.4 N/mm²

CEM ONE/sand ratio: 1:6

• Compressive strength: 18.2 N/mm²

• Flexural strength: 4.6 N/mm²

CEM ONE/sand ratio: 1:7

• Compressive strength: 16.1 N/mm²

• Flexural strength: 4.1 N/mm²

APPLICATION AND PROCESSING
The required amount of CEM ONE, aggregates with selected grain size, and water should be mixed with a machine concrete mixer until a homogeneous mixture is achieved.
Typical ratio: 20 kg CEM ONE, approx. 140 kg sand, and 11–12.5 l water (depending on sand moisture). Add water last to achieve proper consistency.
The mixture should be applied within 1 hour after mixing to avoid layer separation.

Before applying the screed, place a polyethylene sheet or waterproofing membrane between the screed and concrete slab to prevent unwanted water absorption.

Apply the ready mixture in a single layer, manually or with a machine. Level using a stainless steel lute. The layer thickness must be 3–6 cm.

For floor heating systems:

• Minimum screed thickness: 5 cm

• Pipes must be laid at least 2.5 cm below the surface

• Add a steel reinforcement mesh above the pipes

CONSUMPTION

• Depends on the dimensions of the working area

TOOLS FOR WORK

• Machine concrete mixer

• Floor screed machine

• Metal lute

WEATHER CONDITIONS AT WORK
The minimum 24-hour temperature of air and base: +5°C
The maximum temperature: +30°C
Low temperatures extend processing time; high temperatures reduce it.
Avoid working in direct sunlight, rain, or strong air drafts.

FORM OF DELIVERY
Dry mixture in paper packages of 20 kg

NOTES
Characteristics and technical data of the product, presented in this Technical Data Sheet, are defined at a standard temperature (20˚C) and relative humidity (50%). Under different weather conditions, the technological times of some of the processes mentioned above may vary — they may be shorter or longer.
The information provided is based on the manufacturer’s practical experience and technical tests conducted in specialized laboratories.
Do not mix with other building materials.
All hazard and precautionary statements related to CEM ONE can be found in the product’s Safety Data Sheet.

STORAGE
12 months in the originally sealed packages, stored in a dry and ventilated area. Storage on pallets is recommended.

TERAZID Ltd.

5 “5004” Str. Gara Iskar, Sofia, Bulgaria

Test Protocol № 1060-1 / 03.12.2018

NB 1950

DPCH № 20190819-01-D

CEM ONE

Fast-setting cement for floor screeds

Bulk weight	1830 kg/m³
Capillary absorption of water	0.07 kg/m²·min0.5
CEM ONE / sand ratio: 1:4
Compressive strength	29.4 N/mm²
Flexural strength	6.4 N/mm²
CEM ONE / sand ratio: 1:6
Compressive strength	18.2 N/mm²
Flexural strength	4.6 N/mm²
CEM ONE / sand ratio: 1:7
Compressive strength	16.1 N/mm²
Flexural strength	4.1 N/mm²

CEM ONE

MATERIAL SAFETY DATA SHEET
According to (EU) 830/2015

1. Identification of the Substance/Mixture and of the Company
1.1. Product identifier – CEM ONE
1.2. Application of the substance
Fast-setting cement-based mixture for floor screeds
1.3. Details of the supplier of the safety data sheet
TERAZID Ltd.
5, 5004 Street, Gara Iskar
1528 Sofia, Bulgaria
tel. +359 2 9799971, office@terazid.com
1.4. Emergency telephone number (EU) 112
UMHATEM “Pirogov” (toxicology) – +3592/9154409; +3592/9154233

2. Hazards Identification
2.1. Classification of the substance or mixture

• Classification in accordance with Regulation (ЕО) 1272/2008 – CLP: The product is classified as „dangerous“.

2.2. Label elements
Hazard pictograms:

Signal word: Danger!

Hazard statements:
H315 – Causes skin irritation.
H318 – Causes serious eye damage.
H335 – May cause respiratory irritation.

Precautionary statements:
P101 – If medical advice is needed, have product container or label at hand.
P102 – Keep out of reach of children.
P261 – Avoid breathing dust/fume/gas/mist/vapours/spray.
P280 – Wear protective gloves/protective clothing/eye protection/face protection.
P302 + P352 – IF ON SKIN: Wash with plenty of soap and water.
P332 + P313 – If skin irritation occurs: Get medical advice/attention.
P305 + P351 + P315 – IF IN EYES: Rinse cautiously with water for several minutes. Get immediate medical advice/attention.
P402 – Store in a dry place.

2.3. Other hazards
Contains portland cement. When reacting with water, it creates an alkaline medium.
Does not contain soluble Cr (VI) in a quantity greater than 0.0002% within the period of storage.
For all warnings and recommendations, see Section 15.

3. Composition/information on ingredients
General chemical description:
Fast-setting mixture on the basis of portland cement, mineral fillers, and modifying additives.

Information of the substances in accordance with CLP 1272/2008/EC:
Details not specified here. Please refer to the full Safety Data Sheet for substance-specific classification and concentration ranges, if applicable.

CAS № EINECS №	Name	Concentration (%)	Signal word	H-codes
65997-15-1 266-043-4	Grey cement	20-40	Hazardous	H315, H318, H335

All warnings can be seen in Section 15.

4. First Aid Measures
4.1. Description of the first aid measures
Inhalation – Remove the person to fresh air. If symptoms persist, immediately seek qualified medical help.
Skin contact – Immediately rinse the affected area with plenty of water, then wash thoroughly with soap and water.
Eye contact – Irrigate with plenty of water for at least 15 minutes while keeping the eyelid open. Seek qualified medical help.
Ingestion – Do NOT induce vomiting. Seek qualified medical help.

4.2. Most important symptoms and effects, both acute and delayed
In contact with the eyes: irritation.
In contact with the skin: redness, inflammation.

4.3. Indication of any immediate medical attention and special treatment needed – see p. 4.1.

5. Firefighting Measures
CEM ONE is a non-combustible and non-explosive product.

5.1. Extinguishing media
Water mist, water spray – sprayer, dry chemical, foam, carbon dioxide.
Inappropriate means for extinguishing fire – Not known.

5.2. Special hazards, arising from the substance or mixture – None known

5.3. Advice for firefighters – Use autonomous respiratory equipment.

6. Accidental Release Measures
6.1. Personal precautions, protective equipment and emergency procedures
Wear gloves, masks, and protective clothing. Avoid contact with skin and eyes.

6.2. Environmental precautions
Prevent this product from being released into the environment. Measures should be taken to avoid contamination of surface and underground watercourses, soil, and drains.
In case of an accident and/or spill, appropriate containment and limitation measures must be taken. The collected product should be temporarily stored in special, tightly closed, and labeled containers and subsequently transferred to individuals or entities authorized under Article 37 of the Waste Management Act.

6.3. Methods and materials for containment and cleaning up
The spilled material should be mechanically removed, taking precautions to prevent high concentrations of dust in the air. Any amount in the form of dust or unhardened mixture should be cleaned with water and soap.
The collected material must be stored in tightly sealed and labeled containers and temporarily kept on the premises of the company, then transferred to entities holding permits under the Waste Management Act (WMA).

7. Handling and Storage
7.1. Precautions for safe handling
Use the product only for its intended purpose. Do not eat, drink, or smoke while handling it. Avoid dust formation and ensure regular ventilation. Prevent contact with skin and eyes.

7.2. Conditions for safe storage, including any incompatibilities
Store in ventilated and dry locations, in the original sealed packaging. Avoid temperatures below 0°C and above +50°C.
Keep stored separately from food and beverages.

7.3. Specific usage
No specific use beyond its intended application.

8. Exposure Controls/Personal Protection
8.1. Control parameters
Portland cement – permissible limit for inhaled powder particles: 5 ppm / 5 mg/m³ air.

8.2. Exposure controls
8.2.1. Respiratory protection – Use a P2 dust filter mask to prevent inhalation.
8.2.2. Skin protection – Avoid skin contact; wear protective gloves.
8.2.3. Eye protection – Avoid eye contact; wear safety glasses.
8.2.4. Common protection – Store away from food, drinks, and animal feed.

9. Physical and Chemical Properties
9.1. Information on basic physical and chemical properties

• Appearance – fine powder

• Color – grey

• Odor – none

• pH at 20°C – approximately 8.0

• Density – 1830 kg/m³

• Solubility – insoluble

• Explosive properties – non-explosive

9.2. Other information
No data.

10. Stability and reactivity
10.1. Reactivity – The product reacts with moisture and hardens.
10.2. Chemical stability – Stable under recommended storage and use conditions.
10.3. Possibility of hazardous reactions – See section 10.1.
10.4. Conditions to avoid – Avoid contact with moisture during storage and transportation.
10.5. Incompatible materials – No data available.

11. Toxicological Information
11.1. Information for the toxicological effects
Toxicological properties have not been specifically tested. Classification is based on the conventional method under Regulation (ЕО) 1272/2008 – CLP. Based on its composition, the product is not expected to be toxic under normal use.

• Ingestion – Unlikely to cause effects, but ingestion should be avoided.

• Inhalation – Dust may irritate the nose, throat, and lungs, potentially causing coughing.

• Skin contact – May cause irritation when in contact with heat or sweat; not absorbed through the skin.

• Eye contact – May cause serious eye damage.

12. Ecological Information
12.1. Toxicity
Not expected to be hazardous to the environment (LC50 in water not defined). However, if large amounts are added to water, pH may rise and harm aquatic organisms under specific conditions.

12.2. Persistence and degradability – No data.
12.3. Bio-accumulative potential – Low potential for bioaccumulation.
12.4. Mobility in soil – Hard, non-organic product.
12.5. Results of PBT and vPvB assessment – The product does not meet the criteria for PBT or vPvB.
12.6. Other adverse effects – No data.

13. Disposal Considerations
Residual product and packaging waste should be collected in tightly sealed, labeled containers and temporarily stored. They should then be handed over to authorized handlers in accordance with Article 37 of the Waste Management Act (publication SG, issue 53, 2012).

Waste codes, as per Regulation №2 from 23.07.2014 for Waste Classification:

• 10 13 – Waste from the production of cement, lime, gypsum, and related products

• 10 13 14 – Waste concrete and concrete sediment

• 15 01 – Packages

13. Disposal Considerations (continued)
15 01 10* – Packages containing residues of hazardous substances or contaminated with hazardous substances.
Completely empty the packages and dispose of them in accordance with local regulations – at designated places for paper waste.

14. Transport Information
The product is not classified as hazardous under RID, ADR, ADNR, IMDG, or IATA-DGR.
It should be transported in compliance with the respective transport regulations and must be secured properly to ensure the safety of the load.

15. Regulatory Information
15.1. Classification and labeling of the product in accordance with Regulation (ЕО) 1272/2008 – CLP (full text of the codes)
GHS Pictograms:

GHS05 GHS07

15. Regulatory Information (continued)

Signal word: Danger!

Recommendations for danger (N – codes): None

Hazard statements (H – codes):

• H315 – Causes skin irritation.

• H318 – Causes serious eye damage.

• H335 – May cause respiratory irritation.

Precautionary statements (P – codes):

• P101 – If medical advice is needed, have product container or label at hand.

• P102 – Keep out of reach of children.

• P261 – Avoid breathing dust/fume/gas/mist/vapours/spray.

• P280 – Wear protective gloves/protective clothing/eye protection/face protection.

• P302 + P352 – IF ON SKIN: Wash with plenty of soap and water.

• P332 + P313 – If skin irritation occurs: Get medical advice/attention.

• P305 + P351 + P315 – IF IN EYES: Rinse cautiously with water for several minutes. Get immediate medical advice/attention.

• P402 – Store in a dry place.

15.2. Legislation

National Legislation:

• Law of Protection from the Harmful Impact of the Chemical Substances and Preparations

• Environmental Protection Law

• Health and Safety at Work Act

• Ordinance №3 on the minimum requirements for safety and protection of the workers when using personal protective equipment at the workplace

• Waste Management Act

• Ordinance №2 from 23.07.2014 for Waste Classification

• Ordinance on the order and the method of classification, labeling, and packaging of chemical substances and preparations

European Legislation:

• Regulation (ЕО) 1272/2008 – CLP from 16th December 2008, concerning the classification, labelling, and packaging of substances and preparations

• Regulation (ЕО) 830/2015 from 28th May 2015

16. Other Information

16.1. Indication of changes
Format in accordance with Regulation (ЕО) 830/2015 from 28th May 2015, amending Regulation № 1907/2006 (REACH) of the European Parliament.

16.2. Training advice
In addition to the training programs on environmental protection and occupational health and safety, companies must ensure that their workers read, understand, and apply the requirements stated in the Material Safety Data Sheet (MSDS).

16.3. Additional information
See the application(s) of exposure scenarios for the following substances:
Basic information related to the exposure scenarios of substances in the mixture is included in Sections 1, 2, 3, 8, 11, and 12.

16.4. Disclaimer
This safety data sheet and the information within it are based on long-standing industrial and commercial experience and are fully compliant with current Bulgarian and European Union legislation.
This document is not intended to guarantee any specific properties or performance characteristics of the product.
The information provided is considered reliable, provided the product is used under the conditions and for the applications specified on the packaging and/or in the technical documentation.
Any other use of the product, including in combination with other materials or processes, is entirely the responsibility of the user.
It is understood that the user is responsible for determining appropriate safety measures and complying with the relevant legislation applicable to their specific activities.