1. PVC plastic water stop working principle and the scope of
application:
PVC plastic is the water stop from polyethylene resin,
plasticizers, and stability of raw materials, etc., with plastic
smelting, granulation, extrusion, Canadian-style molding processes
and materials made of water. The use of elastomer material with the
elastic deformation characteristics of joints in building
construction has played leakproof, anti-seepage effect and with
corrosion-resistant, durability and good. Water stop plastic used
mainly for pouring concrete when installed in a construction joint
and slot with a concrete foundation for the project as a whole.
Such as tunnels, culverts, water aqueduct, dam, reservoir
structures, underground facilities.
2. PVC water stop performance indicators:
NO. |
Test Item | Data |
1 | Hardness(S.H. Shore hardness A） degree ≤ | 705 |
2 | Tensile strength MPa | 10 |
3 | Break elongation % | 300 |
4 | Resistance around the water pressure under displacement with no
crack MPa | 0.8 |
5 | Brittleness Temperature | -40 |
6 | Hot air aging | 100168h | Tensile strength ,MPa | 10 |
Break elongation ,% | 240 |
7 | Tie-in Specification (Inside the factory) | Tensile strength of Tie-in ,MPa | 10 |
Break elongation of Tie-in ,% | 240 |
3.PVC plastic construction methods and water stop NOTES
PVC plastic and rubber water stop construction method water stop
the same. Buried in the pouringconcrete to make it compatible with
the interface fitting formation, part of adhesive joints fastening,
the process of pouring buried appropriate force to the full shock
ramming concrete,concrete combined with a good seal in order to get
the best effect.
1) In the course of construction, because there are many concrete
cusp of stone and steel, operation is to be taken to avoid causing
mechanical damage to water stop.
2) In positioning water stop plastic, it is necessary to make it
fit with the concrete interface formation, can not water stop flip,
twist, such as the phenomenon, otherwise, should be timely tune.
3) In the pouring water stop fixed, we should prevent the
occurrence water stop offset the impact of sealing effect.
4) Plastic water stop joints can make use of adhesives, heat
welding and other methods to ensure a strong joint.
5) The process of pouring concrete attention should be paid to the
full david ramming, so as to achieve fully integrated water stop
and concrete.
