The use of formularized polyester resin to substitute water and conventional cement as a binding agent is perfect against corrosive substances such as sulphuric acid, alkali liquid wastes and other chemical liquids found in sewerage systems.
On top of this, PRC provides remarkable mechanical strength against external pressure, axial pressure and bending, surpassing the conventional concrete and vitrified clay pipes.
In terms of compressive strength, PRC is at least 2-3 times stronger than conventional cement concrete, with a compressive strength exceeding 80N/mm2. This allows PRC to remain lightweight without compromising structural strength. Finely moulded PRC products will inherit the polyester’s smooth exterior and excel against liquid penetration.
If cost efficiency, productivity and durability are of utmost importance the qualities of high strength combined with flexibility and corrosion resistance of PRC make them the most attractive for use in pipe jacking for sewerage and drainage systems.
TPP Pipes are made with patented technologies from Japan. With the rich history and experience of the team in Japan, TPP pipes aims to replicate this success in the South East Asia region with the qualities as shown:
The casting process of circular pipes make use of a high-speed rotation system to generate centrifugal force in the mould. Compared with tradition vertical/horizontal casting with vibrator compaction, centrifugal spun casting are proven to be more effective in minimizing void with availability of large surface for air escape and higher G-force from rotation to achieve maximum concrete compaction which direct contribute to structural strength and concrete sustainability.
With seamless mould and rotation system, TPP able to assure each pipe are produced with equal mixture distribution, surface flatness and diametrical symmetry.
Production are operated with automated machinery starting from mixing raw material to demoulding cured concrete, this ensures that each pipe is made with consistency that fulfills the Quality Control Plan.
With fully trained operator and production staff, TPP production team ready to meet high market demand without compromising product quality.
TPP’s materials are regulated by BS EN 14636-1 and formulized by Japan partner. This particular resin has long track record in Japan and able to maintain concrete structural properties up to 70°C. To date, installed PRC product are still perform up to user expectation.
-BS EN 14636-1–Clause 4.1.2 – HDT ≥ 70°C
Under normal circumstances, TPP’s PRC compressive strength will achieve demoulding strength within 1 hour, achieving 60 N/mm2 within 1 day and 90 N/mm2 within 7 days.
Should there be any urgency or limited storage at project side, TPP pipes can made available provided 7 days for curing up to product standard.
-BS EN 14636-1–Clause 5.4.3 – Compressive Strength ≥ 80 N/mm2
TPP PRC has the identical chemical resistance similar with protective HDPE liner used in Concrete Manhole / Tunnel / Pipe. Without addition layer of lamination or lining, the concrete itself proven has comprehensive resistance against corrosive substances.
Visual and tactile inspection can be done directly on PRC surface without obstruction of lamination or liner. We believe early detection on any potential defect will greatly enhance any efforts in assuring a safe and sustainable sewerage systems. TPP has full confidence on suitability of PRC structural properties.
-ASTM D 543–Resistance to Chemical Reagent
According to the Independent Laboratory Test Result, TPP Polyester Resin Concrete has been proven to comply with standard requirements after 100 years.
The long-term durability tests was carried out by applying load on pipe samples for more than 10,000 hours (416 days). The results were then extrapolated to 50 years, and proven to meet the standards.
Given the high performance of TPP pipes and regional regulation, we have further extrapolated the results to 100 years, and shown that that TPP pipe performance can still meet the standard requirements.
-BS EN 14636-1–Clause 5.4.6 – Crushing Strength ≥ 50% initial value after 50 years
Economical life cycle cost contributed by higher lifespan. Only minimal maintenance such as water jetting required over its entire lifespan.
( BS EN : > 50 year lifespan )
Excellent resistant against water penetration and wide range of chemical liquid found in sewerage and soils. Concrete surface is non-permeable by any liquid and thus maintains its weight throughout the jacking process.
( ASTM : < 0.09% weight loss under corrosive solutions )
Superior compressive strength with approximate 20% retained as flexural strength. Even without additional reinforcement such as rebar or fiberglass, well compacted concrete is great against pulsation stress causing by vehicle and quivering environment.
( BS EN : withstand 12Hz continues cyclic load , Lab result > 16 Mpa under 3 point load test )
Thinner and lighter than similar strength class conventional jacking pipe. Product material able to reduce by half yet maintaining same jacking force due to PRC has higher compressive strength than cement concrete.
( BS EN : PRC [80 Mpa] & RC – 40 [Mpa] )
Smoother surface reducing friction and require less jacking load during installation process while contributing higher hydraulic performance. Smooth inner surface increasing flow capacity which lead to cost reduction by opting smaller sizes.
( Manning’s Coefficient : PRC [0.009~0.012] & RC [0.012~0.016] )
PRC products are very durable due to its unique mechanical characteristic. Perfect balance between high compressive strength, high impact resistance and without any deformation within service lifespan.