Introduction
SS861 is the single component and non-sag type silicone sealant
which is specially designed for the expansion joint, contraction
joint and vertical joint of the airfield runway, highway, tunnel,
bridge and other concrete roads. It is characterized by low modulus
and good expansion & contraction recovery which can accommodate
the displacement of the concrete joints. The accelerated weathering
aging tests show that its excellent weatherproof aging property can
completely resist the harsh tests of the high and low temperature
as well as the strong ultraviolet radiation environment of the
concrete road.
1. Features
- Ease of application: single package, convenient for
application, excellent extrudability and applicability within the
normal construction temperature range;
- No primer: neutral curing, chemically compatible with the
concrete, firm chemical adhesion to the concrete, normally it is
not necessary to apply the primer;
- Long service life: excellent long-term weather proof aging
properties; it will not be damaged due to the influence of
sunlight, rain, snow, ultraviolet radiation and ozone; outstanding
high and low temperature resistance; after curing, the cured
silicone sealant bar will not get hardened or brittle obviously
under -40°C and still keep good elasticity; it will not flow or
degrade under +150°C;
- High displacement capacity: the sealant will be displaced
freely with the expansion, contraction and shearing of the concrete
joints. But the sealant itself will not be damaged.
- Low modulus: when the sealant is deformed negatively, it will
produce appropriately low stress to act on the concrete substrate
to make sure that the surface layer of the concrete is not damaged.
- High elasticity and high recovery capability: the sealant can
move repeatedly for many times with the movement of joints. It can
respond to and recover quickly. There is only slight permanent
deformation.
2. Main Purpose
- Used for filling and sealing the joint of the airfield runway
and the highway, which can resist large displacement;
- Used for filling and sealing the joint of other concrete
roads;
- Used for the sealing of the subway, tunnel and bridges etc.
projects.
3. Main Technical Standards
Performance | Standard | Measured Value | Test Method |
Leveling ability | Self-leveling | Smooth and Flat | |
Sag | ,mm Vertically, mm | ≤3 | 0 | GB/T 13477 |
Horizontally | WithoutDeformation | WithoutDeformation |
Extrudability, ml/min | ≥80 | 487 |
Surface Drying Time, h | ≤3 | 1.0 |
Elastic Recovery, % | ≥70 | 85 | JC/T 976 |
Tensile Modulus/MPa | 23℃ | ≤0.4 | 0.35 |
-20℃ | ≤0.6 | / |
Adhesion at Maintained Extension | WithoutDamage | WithoutDamage |
Adhesion after heat pressing and cold drawn | WithoutDamage | WithoutDamage |
Adhesion at maintained extension after inundating in the water | WithoutDamage | WithoutDamage |
Adhesion at maintained extension after heat treatment | WithoutDamage | WithoutDamage |
Changes in hardness after the heat treatment, has | ≤10 | 3 |
Heat Aging | Thermo gravimetric, % | ≤8 | 4 | GB 16776 |
Chap | Nil | Nil |
Chalking | Nil | Nil |
4. Standards Compliant
- SS861 complies with and even surpasses the following
standards:
- Industrial Standard SS861: SR I N 25LM JC/T 976-2005
5. Limitations
- It is not suitable for construction under adverse weather;
- SS861 is not applicable to the frost or humid surface;
- SS861 is not applicable to the materials that may exude oil,
plasticizer or solvent such as the surface of the creosoted timber;
- SS861 is not applicable to the place where may constantly
inundate in the water and oil;
- SS861 is not applicable to the places that are not ventilated
because the sealant has to be cured by absorbing the moisture in
the air;
- It is not suitable to apply the SS861 when the temperature of
the material surface is lower than 4°Cor higher than 40°C
- The newly casted concrete shall be protected and maintained
at least for 7 days in the dry weather. If there is rainy day, then
one more day for maintaining shall be added for one rainy day, i.e.
at least 7 days of drying maintenance shall be ensured. If it
requires completing the application rapidly or if the concrete is
the rapid-drying concrete, please contact the technical service
staff of Baiyun Chemical Industry Co., Ltd
- During the application of the sealant, it is suitable to be
lower than the road surface to prevent from wearing.
- Application restriction of the substrate: it is not suitable
to be used on the copper, lead, galvanized metal surface and the
polycarbonate material.
6. Packing
- SS861 is packed using the composite soft film. The net
capacity is 590ml.
7. Color
- SS861 is grey or other colors required by the customers.
8. Storage and Shelf Life
SS861 shall be stored at the cool and dry place below 27°C. The
storage time is 6 months from the date of manufacture.
9. Technical Service
Complete product technical information will be provided.
Adhesion Test:
SS861 road silicone sealant has excellent adhesion to the concrete.
No primer is necessary. But since the variety of the configuration
of the concrete and the different surface cleaning conditions, we
cannot ensure that the sealant is applicable to all kinds of road
concrete. Small scale of field adhesion test must be carried out
before the large-scale application so as to propose reasonable plan
and further to ensure the good adhesion.