JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - 44

FEATURE “Construction” g…/… Honeycombs for a variety of uses Ultra-light honeycomb structures for sustainable drainage system Increasing urban development means more impermeable surfaces, creating problems for stormwater run off during peak flows. These flows can overwhelm standard sewage systems, increasing the risk of flooding and pollutant releases during heavy rains. To address this problem, Nidaplast Waters designed a range of polypropylene honeycomb solutions that it markets for stormwater management applications. Nidaplast EP and Nidagreen EP are the first products in the range. These are 50-mm-cell, 1.5-m3 honeycomb blocks that are assembled and used to absorb the excess from peak stormwater flows. The patented EP system – the first of its kind in the field – works on a simple, unique principle. Burying these extremely lightweight honeycomb blocks (40 kg/m3), which have a 95% void volume and a compression strength of 30-60MT/m2, creates an underground retention basin that can store water during rainstorms. Another innovative aspect is that the system diffuses the water from the bottom, keeping the sediments and debris in the rainwater from entering the blocks. The EP system is the only one on the market that stays clean in the time. More information Ever since it was created, Nidaplast has developed, innovated, and focused on showcasing the added value of its skills and those of its partners. Nidaplast is committed to an environment-friendly initiative and the standardization process as it demonstrates its skills and environmental know-how. The company is certified ISO 9001, ISO 14001, and OHSAS 18001. It is currently number one in the three market segments it created, and continues to increase its sales by about 25% per year, with 60% of sales going for export. Results Configuration Tracer Retention time (s) Incoming/out going mass ratio (%) Flow rate (m/s) Without underpipe Without underpipe Nidaplast® EP with underpipe Nidaplast® EP with underpipe Rhodamine sand 530 488 25% 0.0083 0.0090 Rhodamine - 0.1860 sand 100% 0.2275 Lengthwise section of a Nidaplast complex In the UK, the system was subjected to a comparative study by the University of Sheffield’s Department of Civil and Structural Engineering. The test chamber was 3.6 metres long and 1.8 metre wide. The chamber was used to test both Nidaplast’s solution with supply from the bottom through an underpipe and conventional plastic boxes without underpipe. At a constant flow of 7 l/s, three different aspects were studied: - Monitoring tracers: *measuring the concentration of a liquid fluorescent tracer (Rhodamine WT) at inlet and outlet *Sand (75% of particles < 75 microns). - Monitoring larger debris (plastic bags), - Computer simulations to monitor stormwater progression through each configuration. Results show that with the EP system with underpipe: - stormwater is flushed out directly towards the basin outlet 25 times faster than the system without underpipe, - 100% of the sediments are evacuated, compared to only 25% with the system without underpipe. Computational Fluid Dynamics (CFD) software (version 6.1) was then used to simulate basin filling modes for two different configurations: - Configuration without underpipe - EP system configuration with underpipe The following results were obtained: In the system without underpipe, the sediments, simulated by different-coloured traces, disperse and accumulate within the structure with the risk of clogging over time. In the system with underpipe, the sediments remain in the underpipe drain system, guaranteeing performance over time. Test chamber protocol JEC Composites Magazine / No42 July-August 2008

JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008

Cover
- Applications Composite aerodynamic front-end cabs for passenger trains
- Citadel Plastics acquires BMC Inc.
- Niche market Durable concrete formwork system
- Cool radiators for hot trucks
BUSINESS - Market survey Hexcel anniversary in 2008 marked by investment
- Raw material Corrosion resistance of High-Performance Glass fibres
USERS’ PLATFORM KNOW-HOW Composites in the world Carbon fibre iPhone case
- New generation of hydrogen cars
- Architecture Composites and architecture: the perfect couple
- EEE enclosures
- Thermoplastics Reinforced thermoplastics enable affordable storm-resistant structures
- Gurit signs 4-year supply agreement with EADS
Innovations
- TechnoCompound expands its production
- SGL Group opens central technology and innovation centre
Agenda of events
FEATURE - Partnership Smart composite materials project DECID2 for structural applications
- Hankuk Fiber Group, one man’s determination
- Process Rapid processing of tubular parts made of thermoplastic composites ......................................
- Process Polydicyclopentadiene winning over construction professionals
- Trenchless pipes’ installation
- Corrosion Composite linings for corrosion protection
- Unmanned aircraft made of high-temperature prepreg
- High impact-strength spokes
NEWS WORLDWIDE - Companies GKN Aerospace creates repair facility for metallic and composite structures
- Raw material SMC/BMC compounds for building and construction
- Trends Coatema expertise: coating and materials handling technologies for prepregs
- The world’s largest offshore wind farm project
- Subsea structures
- Design “Eco-characterisation” of composite materials
- Special JEC Composite Asia
- Hitco to supply components for the B787
- Sandwich structure Polypropylene honeycombs for a variety of uses
- Head restraint system
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - Cover
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JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - NEWS WORLDWIDE - Companies GKN Aerospace creates repair facility for metallic and composite structures
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Hitco to supply components for the B787
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JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Hankuk Fiber Group, one man’s determination
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JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - Agenda of events
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JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - Innovations
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JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - BUSINESS - Market survey Hexcel anniversary in 2008 marked by investment
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JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Niche market Durable concrete formwork system
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Trends Coatema expertise: coating and materials handling technologies for prepregs
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JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - FEATURE - Partnership Smart composite materials project DECID2 for structural applications
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JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Architecture Composites and architecture: the perfect couple
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - 31
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - 32
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Raw material SMC/BMC compounds for building and construction
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - 34
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JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Process Polydicyclopentadiene winning over construction professionals
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JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Thermoplastics Reinforced thermoplastics enable affordable storm-resistant structures
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JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - 42
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Sandwich structure Polypropylene honeycombs for a variety of uses
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - 44
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - 45
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Corrosion Composite linings for corrosion protection
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - 47
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JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - High impact-strength spokes
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Head restraint system
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Applications Composite aerodynamic front-end cabs for passenger trains
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - 53
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Trenchless pipes’ installation
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Unmanned aircraft made of high-temperature prepreg
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Subsea structures
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - 57
JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Design “Eco-characterisation” of composite materials
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JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Raw material Corrosion resistance of High-Performance Glass fibres
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JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Process Rapid processing of tubular parts made of thermoplastic composites ......................................
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JEC COMPOSITES MAGAZINE - Issue #42 - July/August 2008 - - Special JEC Composite Asia
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