Sikafloor® -375 2-part PUR tough elastic, crack-bridging coating
发布时间：2023/05/11
Product Data Sheet
Edition 05/05/2012
Sikafloor® -375
Temporary Edition
1
1/6
Sikafloor®-375
Sikafloor® -375
2-part PUR tough elastic, crack-bridging coating
Product
Description
Sikafloor®-375 is a two part, solvent free, low viscosity, tough elastic, crack-bridging
polyurethane resin.
Uses
■ For crack bridging, trafficable, slip resistant wearing layers
■ For car park decks, garage floors and bridges
Characteristics /
Advantages
■ Good crack bridging ability
■ Mechanically resistant if broadcast
■ Watertight
■ Easy application
■ Solvent free
Test
Approval / Standards Certified as part of the Surface Protection System OS 11a according to DIN EN
1504-2 and DIN V 18026.
Certified as part of the Surface Protection System OS 13 according to DIN EN
1504-2 and DIN V 18026.
Product Data
Form
Appearance / Colours Beige
Packaging
Part A: 24.00 kg pail
Part B: 6.00 kg containers
Part A+B: 30 kg ready to mix units
Storage
Storage Conditions /
Shelf-Life
12 months from date of production if stored properly in original, unopened and
undamaged sealed packaging, in dry conditions at temperatures between +5°C and
+30°C.
Technical Data
Chemical Base
Polyurethane
Density
Part A: ~ 1.66 kg/l
Part B: ~ 1,24 kg/l
Part A+B: ~ 1.55 kg/l
Solid Content
~ 100 % (by volume) / ~ 100 % (by weight)
Mechanical/Physical
Properties
Tensile Strength
11 N/mm² (DIN 53504)
Elongation a t Break
110% (DIN 53 504)
Construction2
2/6
Sikafloor®-375
Resistance
Thermal Resistance
Exposure*
Dry heat
Permanent
+50°C
Short-term max. 7 d
+80°C
*No simultaneous chemical and mechanical exposure.
USGBC
LEED Rating
Sikafloor®-375 conforms to the requirements of LEED EQ Credit 4.2: Low-Emitting
Materials: Paints & Coatings
EPA Reference Test Method 24 VOC Content < 100 g/l
System
Information
System Structure
Broadcast highly crack-bridging coloured screed (OS 11a, according to DIN EN
1504-2 and DIN V 18026):
Primer: 1-2 x Sikafloor®-156 / -161 lightly broadcast with quartz sand 0.4
-0.7 mm
Base coat: Sikafloor®-350 Elastic
Wearing course: Sikafloor®-375 (filled with 20% quartz sand 0.1 - 0.3 mm)
Broadcast to excess with quartz sand 0.7 - 1.2 mm
Seal coat: 1-2 x Sikafloor®-359 N*
Broadcast highly crack-bridging waterproofing screed, base coat spray applied:
Primer: 1-2 x Sikafloor®-156 / -161 lightly broadcast with quartz sand 0.4
- 0.7 mm
Base coat: Sikalastic®-821 LV
Wearing course: Sikafloor®-375 (filled with 20% quartz sand 0.1 - 0.3 mm)
Broadcast to excess with quartz sand 0.7 - 1.2 mm
Seal coat: 1-2 x Sikafloor®-359 N*
Broadcast coloured flexible screed (OS 13, according to DIN EN 1504-2 and DIN V
18026):
Primer: 1-2 x Sikafloor®-156 / -161 lightly broadcast with quartz sand 0.4 -
0.7 mm
Wearing course: Sikafloor®-375
Broadcast to excess with quartz sand 0.4 - 0.7 mm or 0.7 - 1.2
mm
Seal coat: 1-2 x Sikafloor®-359 N*
*For exposed areas the use of Sikafloor®-359 N as a seal coat is mandatory.
For application on inclined / sloping surfaces:
Use the same systems as described with the addition of Sika® Extender T as
stated below.
Application Details
Consumption / Dosage
Broadcast highly crack-bridging coloured screed (OS 11a):
Coating System Product Consumption
Primer (lightly
blinded)
1-2 x Sikafloor®-156 / -161
Quartz sand 0.4 - 0.7 mm
1-2 x ～0.3 - 0.5 kg/m²
～0.8 kg/m²
Base Coat
Sikafloor® -350 Elastic
～2.2 kg/m²
Wearing course
Sikafloor®-375 filled with
quartz sand 0.1-0.3 mm
Broadcast to excess with
quartz sand 0.7 - 1.2 mm
~ 1.86 kg/m2 (1.55 kg/m
2
binder + 0.31 kg/m
2 quartz
sand 0.1-0.3 mm)
~6 - 8 kg/m2
Seal coat
1-2 x Sikafloor®-358 or -
359N
0.7-0.9 kg/ m²
Broadcast highly crack-bridging waterproofing screed, base coat spray applied:
Coating System Product Consumption
Primer (lightly
blinded)
1-2 x Sikafloor® -156/-161
quartz sand 0.4 - 0.7 mm
1-2 x ～0.3 - 0.5 kg/m²
～0.8 kg/m² 3
3/6
Sikafloor®-375
Base Coat
Sikalastic® -821 LV
～1.5 kg/m²
Wearing course
Sikafloor® -375 filled with quartz
sand 0.1-0.3 mm
Broadcast to excess with
quartz sand 0.7 - 1.2 mm
~ 1.5 kg/m2 (1.2 kg/m2
binder + 0.3 kg/m2 quartz
sand 0.1-0.3 mm)
～6-8 kg/m²
Seal coat 1-2 x Sikafloor® -359
N*
~0.7-0.9 kg/ m²
Broadcast coloured flexible screed (OS 13)
Coating System Product Consumption
Primer (lightly
blinded)
1-2 x Sikafloor® -156/-161
Quartz sand 0.4 - 0.7 mm
1-2 x ～0.3 - 0.5 kg/m²
～0.8 kg/m²
Wering course
Sikafloor® -375 N
Broadcast to excess with
quartz sand 0.4 - 0.7 mm or
0.7 - 1.2 mm
～1.5-1.8kg/m²
～6-8 kg/m²
Seal coat 1-2 x Sikafloor® -359
N*
0.7-0.9 kg/ m²
*For exposed areas the use of Sikafloor®-359 N as a seal coat is mandatory.
These figures are theoretical and do not allow for any additional material due to
application technique, surface porosity, surface profile, variations in level and
wastage etc.
Application on slope
slope% Extender T (wt. -%, forSikafloor® -375 at
+20°C)
0-2.5
—
2.5-5.0 1
5.0-10.0 2
10-15 2.5
15-20
3
Substrate Quality
The concrete substrate must be sound and of sufficient compressive strength
(minimum 25 N/mm2) with a minimum pull off strength of 1.5 N/mm2.
The substrate must be clean, dry and free of all contaminants such as dirt, oil,
grease, coatings and surface treatments, etc.
If in doubt apply a test area first.
Substrate Preparation
Concrete substrates must be prepared mechanically using abrasive blast cleaning
or scarifying equipment to remove cement laitance and achieve an open textured
surface.
Weak concrete must be removed and surface defects such as blowholes and voids
must be fully exposed.
Repairs to the substrate, filling of blowholes/voids and surface levelling can be
carried out using appropriate products from the Sikafloor®, SikaDur® and
SikaGard® range of materials.
The concrete or screed substrate has to be primed or levelled in order to achieve
an even surface.
High spots must be removed by e.g. grinding.
All dust, loose and friable material must be completely removed from all surfaces
before application of the product, preferably by brush and/or vacuum.
Application
Conditions /
Limitations
Substrate Temperature
+10°C min. / +30°C max.
Ambient Temperature
+10°C min. / +30°C max. 4
4/6
Sikafloor®-375
Substrate Humidity
< 4% pbw moisture content.
Test method: Sika®-Tramex meter, CM-measurement or Oven-dry-method.
No rising moisture according to ASTM (Polyethylene-sheet).
Relative Air Humidity
80% r.h. max.
Dew Point
Beware of condensation!
The substrate and uncured floor must be at least 3°C above dew point to reduce
the risk of condensation or blooming on the floor finish.
Application
Instructions
Mixing
Part A : part B = 80: 20 (by weight)
Mixing Time
Prior to mixing, stir part A mechanically. When all of part B has been added to part
A, mix continuously for 2 minutes until a uniform mix has been achieved.
For the addition of quartz sand:
When parts A and B have been mixed, add the quartz sand 0.1 - 0.3 mm and mix
for a further 2 minutes until a uniform mix has been achieved.
To ensure thorough mixing pour materials into another container and mix again to
achieve a consistent mix.
Over mixing must be avoided to minimise air entrainment.
Mixing Tools
Sikafloor®-375 N must be thoroughly mixed using a low speed electric stirrer
(300 - 400 rpm) or other suitable equipment.
Application Method /
Tools
Prior to application, confirm substrate moisture content, r.h. and dew point.
If > 4% pbw moisture content, Sikafloor® EpoCem® may be applied as a T.M.B.
(temporary moisture barrier) system.
Primer:
Make sure that a continuous; pore free coat covers the substrate. If necessary,
apply two priming coats. Apply Sikafloor®-156 or 161 by brush, roller or squeegee.
Preferred application is by using a squeegee and then backrolling crosswise.
Broadcast wearing course:
Sikafloor®-375 is poured and spread evenly with a serrated / notched trowel. Then,
level and remove entrained air with a spiked roller and broadcast with quartz sand,
at first lightly and then to excess.
Cleaning of Tools
Clean all tools and application equipment with Thinner C immediately after use.
Hardened and/or cured material can only be removed mechanically.
Potlife
Temperatures Time
+10°C ~ 60 minutes
+20°C ~ 25 minutes
+30°C
~ 15minutes
Waiting Time /
Overcoatability
Before applying Sikafloor®-375 on Sikafloor®-156 / -161 allow:
Substrate temperature
Minimum
Maximum
+10°C 24 hours 3 days
+20°C 12 hours 2 days
+30°C 6 hours 1 days
Before applying Sikafloor®-375 on Sikafloor®-350 Elastic allow:
Substrate temperature
Minimum
Maximum
+10°C 24 hours 2 days
+20°C 15 hours 24 hours
+30°C 8 hours 16 hours 5
5/6
Sikafloor®-375
Before applying Sikafloor®-375 on Sikalastic-821 LV allow:
Substrate temperature
Minimum
Maximum
+10°C 1 hours 2 days
+20°C 30 minutes 2 days
+30°C 15 minutes 2 days
Before applying Sikafloor®-359 N on Sikafloor®-375 broadcast allow:
Substrate temperature
Minimum
Maximum
+10°C 24 hours
＊
+20°C 12 hours ＊
+30°C 5 hours ＊
* No max. waiting time if fully broadcast surface is free from all contaminations.
Times are approximate and will be affected by changing ambient conditions
particularly temperature and relative humidity.
Notes on Application /
Limitations
Do not apply Sikafloor®-375 on substrates with rising moisture.
Freshly applied Sikafloor®-375 must be protected from damp, condensation and
water for at least 24 hours.
Uncured material reacts in contact with water (foaming). During application care
must be taken that no sweat drops into fresh Sikafloor®-375 (wear head and wrist
bands).
Tools
Recommended Supplier of Tools:
PPW-Polyplan-Werkzeuge GmbH, Phone: +49 40/5597260, www.polyplan.com.
Serrated trowel for smooth wearing layer:
e.g. Large-Surface Scrapper No. 565, Toothed blades No. 25
The incorrect assessment and treatment of cracks may lead to a reduced service
life and reflective cracking.
If heating is required do not use gas, oil, paraffin or other fossil fuel heaters, these
produce large quantities of both CO2 and H2O water vapour, which may adversely
affect the finish. For heating use only electric powered warm air blower systems.
Curing Details
Temperature Foot traffic Light traffic Full cure
+10°C ~ 24 hours ~3 days ~ 7 days
+20°C ~ 12 hours ~ 30 hours ~5 days
+30°C ~ 5 hours ~ 24 hours ~ 4 days
Applied Product ready
for use
Note: Times are approximate and will be affected by changing ambient conditions.
Value Base
All technical data stated in this Product Data Sheet are based on laboratory tests.
Actual measured data may vary due to circumstances beyond our control.
Local Restrictions
Please note that as a result of specific local regulations the performance of this
product may vary from country to country. Please con
sult the local Product Data
Sheet for the exact description of the application fields.
Health and Safety
Information
For information and advice on the safe handling, storage and disposal of chemical
products, users shall refer to the most recent Material Safety Data Sheet containing
physical, ecological, toxicological and other safety-related data. 6
6/6
Sikafloor®-375
Legal Notes: The information, and, in particular, the recommendations relating to the application and end-use of
Sika products, are given in good faith based on Sika's current knowledge and experience of the products when
properly stored, handled and applied under normal conditions in accordance with Sika’s recommendations. In
practice, the differences in materials, substrates and actual site conditions are such that no warranty in respect of
merchantability or of fitness for a particular purpose, nor any liability arising out of any legal relationship
whatsoever, can be inferred either from this information, or from any written recommendations, or from any other
advice offered. The user of the product must test the product’s suitability for the intended application and purpose.
Sika reserves the right to change the properties of its products. The proprietary rights of third parties must be
observed. All orders are accepted subject to our current terms of sale and delivery. Users must always refer to
the most recent issue of the local Product Data Sheet for the product concerned, copies of which will be supplied
on request.
Sika
Certificate No.:CC3576 Certificate No.:CC3577
The product is manufactured under a HKQAA
ISO9001/ISO14001
certified quality/environmental management system.