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Recently at Nelson Port, Interbloc units were subjected to a significant real-world impact after being struck by heavy machinery, involving an excavator weighing approximately 30 tonnes.

Despite the force of the collision, the Interbloc blocks remained standing, clearly demonstrating the inherent strength, stability, and resilience of the system.

This incident highlights the safety and performance benefits of reinforced Interbloc systems, which are engineered not only to retain ground but also to protect people, assets, and operational continuity in high-risk environments such as ports, industrial sites, and transport hubs.

Real-world events like this provide powerful validation of why properly engineered, reinforced infrastructure solutions matter. In locations subject to heavy plant movement and constrained operating conditions, the consequences of failure can be severe. In this instance, the robustness of the Interbloc system helped mitigate what could have been a far more serious outcome.

At Envirocon, we are proud to supply and support Interbloc solutions that perform when it matters most, delivering confidence, safety, and resilience in demanding applications.

A major storm event on the West Coast recently caused widespread disruption, cutting all road access into and out of the region. Several critical routes were closed due to significant slips and underslips, including State Highway 6 near Coal Creek, south of Murchison, leaving communities and freight operators isolated.

At this location, the rapid reopening of SH6 was critical to restoring connectivity for local communities and maintaining essential freight movements. The speed and effectiveness of the emergency response were made possible through the use of Interbloc precast concrete blocks, which enabled the fast construction of a temporary single-lane carriageway capable of carrying heavy vehicles.

One of the key advantages of the Interbloc solution was local availability. Interbloc units were already stockpiled at Fulton Hogan’s Appleby Quarry, allowing construction crews to mobilise immediately. This eliminated the significant delays that would have occurred if materials had needed to be transported from Christchurch via Blenheim, enabling repair works to begin without delay and the highway to reopen sooner.

This project demonstrates how modular, reusable infrastructure systems such as Interbloc can play a vital role in emergency response and network resilience, particularly when supported by strategic local stockpiling. The ability to deploy a proven, heavy-duty solution at short notice was instrumental in reducing downtime on a critical transport corridor.

Credit goes to Fulton Hogan and all crews involved for their efficient, safe, and highly effective work under challenging conditions.

We've got some exciting updates to share from the Envirocon team. This summer, we rolled up our sleeves and got to work on a major overhaul of our Penrose factory. The result? A revamped layout that's all about boosting efficiency, safety, and sustainability in the world of ready mix concrete.

Here's the lowdown: we've implemented a slick one-way traffic flow system within our factory grounds. This simple change might not sound like much, but it's making a world of difference. By minimising truck reversing and simplifying traffic flow, we're slashing turnaround times and keeping operations running smoothly. This has a big impact on our members who rely on fast efficient truck turn around times.

But that's not the only improvement we've made. We've also ramped up our factory's capacity, going from handling just two trucks at a time to up to five at a time! That means we can process more concrete, faster, and with fewer bottlenecks along the way.

Of course, safety is always top of mind for us. By eliminating truck reversing and improving visibility, we're reducing risks and creating a safer work environment for everyone involved. And by separating traffic within the factory, we're adding an extra layer of protection to ensure smooth operations.

But wait, there's more! We've got some other exciting projects in the pipeline too. Keep your eyes peeled for updates on two new locations opening soon, as well as some handy tools to help track zero waste in the construction industry.

 

About Envirocon:

Envirocon is a leader in sustainability, zero waste, and circular economy solutions. Envirocon is a Product Stewardship Scheme Accredited by the Minister for the Environment under the Waste Minimisation Act 2008, we're leading the charge in sustainable solutions for excess ready mix concrete.

From transforming excess concrete into reusable precast elements to diverting thousands of tons of waste from landfills, we're committed to making a positive impact on the environment - including reducing carbon emissions by an estimated 2.8mill kgCO2e over the next twelve months. With a dedicated team spread across the country, we're working tirelessly to build a greener, more sustainable future for the construction industry.

Join us on our journey towards a zero-waste tomorrow.

3 Concrete Mix Options Offer You More Choice

We're excited to announce the launch of Total Precast Solutions (TPS), an initiative that gives you the ability to minimise embodied carbon impact without comprimising the technical requirements. TPS offers three concrete mix options across all Envirocon product ranges, including Interbloc and Stonebloc.

Ultra Low Carbon Mix
Ultra Low Carbon: This is the standard choice, with an EPD-certified ~ 97% reduction in embodied carbon compared to standard concrete mixes.  
Low Carbon Total Precast Solutions
Low Carbon: This option is available for those who want more certainty with their concrete mix. It incorporates a 30% fly ash replacement 30MPa 19mm aggregate mix, resulting in a ~30% reduction in embodied carbon compared to standard mixes.
Standard Mix Total Precast Solutions
Standard Mix: This mix is ideal if you have specific manufacturing timelines and/or technical requirements. This option features a standard 30MPa 19mm aggregate mix with no carbon reduction.

 The Benefits of TPS

TPS gives you and the environment access to many benefits: 

Envirocon's Commitment to Sustainability

Envirocon is a leader in construction sustainability. Our comprehensive circular economy approach incorporates:

Giving You Concrete Choices & Easy Sustainability Solutions 

 

Adding TPS expands your options, making it easy for you to have well-engineered and sustainable choices. With TPS, you can control design outcomes, reduce embodied carbon, and make informed decisions about your project's environmental impact. 

If you're ready to take advantage of Envirocon's sustainable concrete solutions and TPS's flexibility, reach out to our team today to discuss how we can work together on your next project.

Contact us 

Sustainability is increasingly shaping up to be a significant driver of change in how we build and operate in New Zealand. Over the past five years a raft of new statutory and regulatory requirements have been passed or come into force.

Legislation such as the Zero Carbon Act, Waste Minimisation Act, Resource Management Act (RMA), and Environmental Reporting Act, have been passed to push a more sustainable approach to managing resources.

We profile some of these in this article, and this blog will guide you through key dates in 2023 and beyond.

Zero Carbon Act

The Zero Carbon Act (also known as the Climate Change Response Act) is one of the most prominent New Zealand Government Acts relating to sustainability. It aims to help limit the global average temperature to 1.5 degrees celsius under the Paris Climate Agreement. This requirement that forms the Act spans decades, so vigilance in knowing what’s coming up is needed.

Zero Carbon Act NZ

The largest target for this act is known as “Target for 2050”. This Act requires:

BY THE BEGINNING OF 1ST OF JANUARY 2030:

BY THE BEGINNING OF 1ST OF JANUARY 2050:

POTENTIAL RECOMMENDATIONS TO AMEND 2050 TARGET

With the 2050 target being over two decades away, the Commission may recommend some changes. Keeping this in mind is a good idea to know as it has the potential to impact individuals & businesses.

In order for the Commission to recommend these changes a significant change has to occur. This includes the scientific understanding of climate change, New Zealand’s economy, New Zealand’s obligations under international agreements (like the Paris Climate Agreement), and technological developments.

Waste Minimisation Act

The Waste Minimisation Act aims to push New Zealand towards a circular economy. It encourages a reduction in the amount of waste by putting a cost on waste and encouraging product stewardship.

The circular economy

One of the largest components of the Waste Minimisation Act is the Waste Levy. From the 1st of July 2023, this is set to increase. Presently, the increase in levies is set to stop on the 1st of July 2024.

CURRENT, AS OF APRIL 2023

1 JULY 2023

1 JULY 2024

To help support the growth of a circular economy, mandatory product stewardships schemes are being implemented. Product stewardship asks manufacturers to take responsibility for the product at the end of their useful life. By doing this, it’s hoped that manufacturers will design products that maximise resource efficiency and reduce long-term waste.

With product stewardships, there are voluntary and regulated options. Regulated product stewardships are used for the 6 priority products that the Government has deemed a priority. These products are:

The upcoming regulated product stewardships are tyres and large batteries. Accreditation for tyres has been completed and is expected to launch in late 2023. For batteries, the accreditation is expected to be finalized in late 2023, with the scheme launching in 2024.

The Agrecoverey Foundation will be consulted on regulations to support farm waste (plastics, Agrichemicals, and their containers) in late 2023.

Resource Management Amended Act 2020

The purpose of the existing RMA is to balance the economic and environmental trade offs in resource use.. Not only does the RMA manage air, soil, fresh water and coastal marine areas, it also regulates land use and the provision of infrastructure that are integral to the country’s planning system (Ministry for the Environment)

Over the coming years, the RMA is getting a major overhaul. Three pieces of legislation are planned to replace the current RMA (Resource Management Act 1991). They are:

Confirmation of these changes is expected mid-2023. Soon after the new legislation comes into force the Government will release the National Planning Framework (NPF) which will provide more detailed national direction on how decision-makers in the new resource management system will give effect to the new legislation. The intention is that this comes into effect in early 2025.

Resource management reforms will play an instrumental role in planning for natural hazards. The NPF will provide national direction on risk reduction and resilience to natural hazards and the effects of climate change. The NPF will guide regions on how to undertake risk assessments, respond to, and prepare for future hazard and climate events, supporting consistency across New Zealand.

How Envirocon Is Helping Build a Greener Future

Since we were established in 2004, we’ve always been working towards building a greener future. With all of the changes coming to sustainability Acts and agreements, here is we make following the changes easy.

Our Interbloc concrete blocks are low carbon, zero waste (They’re CarbonSmar®t). At the tail end of 2022 we were independently verified with an EPD demonstrating we’re New Zealand’s only precast construction system that has a low carbon profile. This is made possible with a voluntary product stewardship that we have with leading concrete suppliers - we take high-quality, wet excess concrete that would’ve otherwise ended up in landfill and pour it into our Interbloc moulds. Using this concrete means fewer emissions are created, helping support New Zealand's construction industry to achieve the 2050 Zero Caron Act targets.

Allied Concrete truck leaving Envirocon Penrose Yard, Stonebloc in the foreground of photo

By using high-quality, wet excess concrete, we’re avoiding another waste stream being created. With the help of product stewardship, Interbloc works towards accomplishing the desired outcome of the Waste Minimisation Act - to reduce waste. Both of Envirocon’s ranges - Interbloc and Stonebloc - are modular concrete block systems meaning structures can be deconstructed when they’re no longer needed. Having solutions that are modular reduces the need for more materials/products being created, further supporting the Waste Minimisation Act.

Interbloc non-destructive dismantling for deconstruction

For a solution that works with New Zealand’s sustainability acts & agreements, ask about Interbloc or Stonebloc.

The amount of waste New Zealanders are sending to landfill is increasing. In the last decade, disposal in municipal landfills has increased by 48% (Ministry for the Environment). In Auckland alone, 1.6 million tonnes of waste is sent to landfill - more than 1 tonne per person (Auckland Council).

Only a small fraction of New Zealand's waste is reused or recycled because

One of the tools that local councils and central governments are using to combat this is waste levies.

What are waste levies?

To help New Zealand take responsibility for the waste they produce, tools like waste levies are being implemented.There are 2 main aims of creating waste levies: to raise revenue for initiatives that aim to reduce and encourage resource recovery, and recognize that waste disposal imposes costs on the environment, society, and the economy (MFE).

Over a duration of 4 years, the levy will be progressively increased to allow for behavioural change and system implementation.

There are 4 types of landfill that the central government has levies for or is adding waste levies to. These are municipal waste (current), construction and demolition waste (current), managed fill, and controlled fill. By July 1st 2024, the waste levy for municipal waste will be $60 per tonne, construction and demolition waste $30 per tonne, managed fill $10 per tonne and controlled fill $10 per tonne.(Waste Management).

Waste Levies

How waste levies are distributed in New Zealand

Revenue raised from the levy is to be spent on waste minimisation activities. The process of how it needs to be spent:

How the Waste Levy is Distributed

THE WASTE MINIMISATION FUND

This fund is used to build recycling infrastructure across New Zealand. A long-term plan for managing the country’s waste and how the increased revenue will be spent is being strategized by the Government (EnviroWaste). Likely, this will include large scale investments in recycling and other alternatives to landfill combined with smaller-scale initiatives for innovative approaches and increasing public awareness.

Envirocon’s Role in Waste Levies; Using Product Stewardship

Envirocon is the concrete industry’s answer to eliminating waste. In 2015 we created the Envirocon Product Stewardship Scheme with New Zealand’s leading concrete suppliers. Accredited by the Minister for the Environment under the Waste Minimisation Act 2008, wet excess certified concrete is upcycled - eliminating a waste stream and reducing associate cost.

The future of waste levies in New Zealand

As of June 2022, revenues raised from the landfill levy is about $36million per annum - and it has to be spent on waste minimisation. Increases in the waste levy is projected to reach between $220 and $247 million by 2023 (Ministry for the Environment). This gives more revenue for waste management and waste minimisation activity.

For New Zealand to have a low-waste future, there is a high demand to develop large-scale resource recovery infrastructure. Rather than exporting our waste overseas, we need to deal with it ourselves. Some of these actions (that use revenue from the waste levies) may include:

Envirocon’s Interbloc range helps achieve waste minimization goals

Interbloc refuse and recycling bins

Interbloc’s refuse and recycling bins can help New Zealand get closer to achieving these actions. By choosing Interbloc for resource recovery centers, a host of benefits are obtained:

LOW CARBON, ZERO WASTE

Every year about 300,000 tonnes (or seven sky towers) of high quality, certified concrete ends up as waste. Interbloc helps to change that with its CarbonSmart system, closing the loop on concrete waste for good.

Because Interbloc is made for wet, certified excess concrete it’s low carbon, zero waste. Backed by an EPD, Interbloc supports the goals of reducing waste as well as other acts like the Waste Minimisation Act 2008, Zero Carbon Act, and the Paris Climate Agreement.

By using Interbloc for your refuse and recycling bins, you are helping New Zealand reduce was in 2 ways:

  1. The wet certified excess concrete is used to create Interbloc, diverting from landfill (and avoiding a waste stream)
  2. The blocks are used to create the infrastructure to manage New Zealand’s waste

MADE FOR DECONSTRUCTION

Interbloc is a modular precast construction system, meaning blocks can be easily stacked and unstacked. This makes the Interbloc system, one that’s purpose-built for deconstruction. Thanks to the interlocking shear key in every block, blocks can be sold back to us via the buyback guarantee after you’ve finished with them.

Interbloc interlocking gif

Combining the low-carbon elements of Interbloc along with its ability to deconstruct, a circular economy is created.

The modularity of Interbloc means that it can grow or shrink to New Zealand’s waste needs. It can be used initially to sort and store waste, but if there is a reduction in waste and a lack of need for bins, you can non-destructively dismantle the blocks and stop more waste from entering New Zealand’s landfills.

CODE COMPLIANT

Interbloc is backed by comprehensive, code-compliant, structural design methodologies. If needed, PS1s can also be issued.

To fit different engineering and council requirements, there are many configurations and solutions available with Interbloc. The modular system can be vertically reinforced to form a cantilever wall which increases the loads the walls can take.

By using Interbloc for waste management & minimisation structures, you’ll have a strong and safe solution that will stand for years to come.

HIGH PRODUCTIVITY

New Zealand needs to act fast to effectively reduce waste; Interbloc can help.

From the start, Interbloc has been designed to be a high productivity precast modular wall system. This means you can install more walls with less effort compared to other systems. Achieving the productivity of 160m2 of wall per day (with 2 people), is all done with the interlocking shear key.

Choose Interbloc to help New Zealand become more sustainable
New Zealand needs a waste management and minimsation solution that is adaptable, sustainable, and strong. Interbloc offers this and more.

Reach out to us today for a quote.

The increasing demand for sustainable and resource-efficient construction processes presents significant opportunities for specifiers, suppliers, and contractors to transform their business practices for the better. This demand is fueled by several factors, including the government’s desire to reduce carbon emissions. The ultimate goal of sustainability is to ensure that we do things today in a way that can be sustained for the future. At Envirocon, we understand that these changes can be painless, practical, and cost-effective, as we have successfully implemented them for the past 18 years.

A Practical Approach to Sustainable Construction

Implementing sustainability doesn't have to be a daunting task, but it often requires partnering with experts in the field. This is where Envirocon comes in. Approximately 300,000 tonnes of high-quality, certified, wet concrete - equivalent to seven Sky Towers worth - would go to waste because it cannot be used before it cures. Envirocon was established to eliminate this waste. We work closely with some of New Zealand's largest concrete companies to permanently close the loop on concrete waste by transforming excess high-quality concrete into precast concrete products that can be reused repeatedly. Our expertise lies in matching insecure and volatile supply with mass market demand. We do the hard work on sustainability so our customers can unlock exceptional benefits.

Accreditation Matters, Avoid Greenwashing

When there is a demand for a solution that is not readily available, there may be a temptation to offer an inadequate response, which is known as greenwashing in the sustainability world. Greenwashing occurs when a proposed solution may sound good but ultimately fails to make a significant impact. Specifiers, contractors, and asset owners need to feel reassured that their sustainability initiatives are genuinely effective.

Envirocon serves as an example of how to achieve this. Our company operates New Zealand's only construction-related Product Stewardship Scheme, which has been accredited by the Minister for the Environment under the Waste Minimisation Act 2008, demonstrating our zero-waste approach to handling excess concrete. Additionally, we have a registered Environmental Product Declaration that establishes the ultra low embodied carbon profile of our blocks. These two independently verified accreditations provide a comprehensive sustainability solution for contractors striving to fulfill complex and ambitious sustainability objectives.

Envirocon's Circular Economy Process

It’s Only Going to Get More Important

By putting carbon reduction plans into action, we can help mitigate further impacts including slowing down global warming. The average global temperature is projected to increase by 1.5°C above pre-industrial levels by 2040, and without immediate and significant action, the impacts of climate change will only become more severe (Intergovernmental Panel on Climate Change).

Creating more resource-efficient practices also supports a more sustainable planet. By shifting focus to resource efficiency, it’s estimated we can reduce the use of raw materials by 60% and the costs of waste management by up to 90% (European Commission). Choosing solutions that enable the ability for resource efficiency will help achieve these estimates.

Sustainable construction is a topic of growing importance, and the New Zealand government has enacted two critical pieces of legislation regarding carbon reduction and resource efficiency: the Zero Carbon Act and the Waste Minimisation Act.

Enacted in 2019, the Zero Carbon Act sets a target for New Zealand to achieve net-zero carbon emissions by 2050 and establishes an independent climate commission to provide guidance on accomplishing this goal. The Waste Minimisation Act, enacted in 2008, promotes waste reduction, reuse, and recycling, with the goal of conserving resources.

Envirocon and its product ranges demonstrate how compliance with these Act’s can be achieved without needing to reinvent the wheel;

Practical Sustainable Construction Case Studies

CITY RAIL LINK

The City Rail Link - a huge infrastructure project - aim’s set the benchmark for developing sustainable infrastructure in New Zealand. Following the ISCA framework, carbon reduction and resource efficiency are some of the projects’ highest priorities.

City Rail Link

Envirocon and the Link Alliance started working together as soon as construction commenced in 2019. Link Alliance was able to get certainty excess concrete was diverted from landfill - helping to achieve the zero waste goals of the project, and at the same time reuse low embodied carbon blocks on the project.

Nick Braxton is the Principal Sustainability Advisor for the Link Alliance. He explains that the Alliance has a “zero waste to landfill” policy that makes Envirocon a perfect partner for them. “Our non- linear approach to waste management means we’re using excess concrete for a wide range of purposes instead of sending it to landfill,” he says.

As the project comes to an end, the intention is to take the blocks back off the project and repurpose them for other structures.

WATERVIEW TUNNEL

Interbloc Settlement Ponds for the Waterview Tunnel

The $1.4 billion project, the Waterview Connection, includes the construction of 4.8km of six-lane motorway. To achieve this, extensive tunnelling needed to be conducted resulting in plenty of excess water.

Interbloc was contracted to form the settlement ponds for this project, largely due to the engineering capacity of the concrete blocks and that they could be removed easily after the project finished via the buyback guarantee

By using Interbloc for their settlement pounds, the Waterview Connection was able to be resource efficient.

Key Lesson - Sustainability Doesn't Have to be Hard

Envirocon demonstrates how partnering with the right suppliers can deliver innovative and comprehensive sustainable construction solutions which don’t necessarily need to be difficult, expensive, or lower quality.

Are you in the events industry and looking for a way to add brand identity and functionality to your concrete blocks? Our new 'brand your block' service is here to help.

We can customise the look of a block so suit your brand by sticking decals to the side of the blocks. These high-quality decals are perfect for branding and customizing all of our counterweight and bollard ranges, from 10kgs to 1500kgs. They're great for a variety of events, including weddings, parties, and corporate events. With our decals, you can transform your blocks into unique and personalized pieces that will make your event stand out.

Examples of decals

(BollardBloc on the left and a decal for Tomo's Saws and Mowers on the right)

Here are a few ways you can use our 'brand your block' service:

The decals are made with a special adhesive that ensures they'll stay put with a 12 month warranty. They are easy to apply and remove. 

We offer both hire and buy options for the concrete blocks. If you're wanting to hire, any decals will be yours and are not part of the hiring process. Buying online will be offered soon but for now contact us, we will be able to help you to buy bundles of blocks with customised decals that fit their brand.

So why settle for plain, boring blocks when you can add some style and functionality with our decal service? Contact us today to start branding your blocks, elevating your space with unique and personalized concrete blocks for any occasion.

The Paris Climate Agreement, also known as the Paris Agreement or COP21, is a legally binding international treaty adopted by almost every country in the world in 2015. Its goal is to limit global warming to below 2 degrees Celsius above pre-industrial levels and to pursue efforts to limit the temperature increase to 1.5 degrees Celsius. In order to achieve this, countries have committed to regularly reporting their greenhouse gas emissions and implementing measures to reduce them.

As the world shifts towards a more sustainable future, there is an increasing demand for products and services that can help reduce carbon emissions and create climate resilient economies. Products like Interbloc and Stonebloc are leading the way in this regard by providing innovative building solutions that can help to meet the needs of the Paris Climate Agreement while following the principles of circular economy.

Interbloc, with its precast concrete blocks using wet excess concrete, is an excellent example of circular economy in action. By repurposing excess concrete, Interbloc is not only reducing the environmental impact of concrete production but also saving costs and resources. They are keeping the resources in use for as long as possible and extracting the maximum value from them before recovering and regenerating the products. Interbloc also offers a buyback guarantee, which means they will repurchase any used blocks at the end of their useful life, ensuring that the blocks will be repurposed, completing the loop of the circular economy.

Not only that, but Interbloc blocks are energy-efficient, durable and modular. This means that they can be easily assembled and disassembled, making them ideal for construction projects that are subject to change, such as temporary structures or phased developments. This is particularly useful for reducing waste and minimizing construction time, and it can help to create climate resilient economies by providing durable and sustainable building solutions that can withstand the effects of climate change.

Stonebloc is another range in the the Envirocon catalogue, with a focus on timeless aesthtics. It’s designed to be used in a modular system, which allows for flexibility and adaptability in construction projects, helping reduce waste and minimize construction time. By offering durable and sustainable building solutions, Stonebloc plays a role in creating economies that can withstand the effects of climate change

Both Interbloc and Stonebloc are examples of how businesses can play a role in meeting the needs of the Paris Climate Agreement by providing innovative solutions that can help to reduce carbon emissions, repurpose waste materials, and follow the principles of circular economy. They also help to create climate resilient economies by providing durable and sustainable building solutions that can withstand the effects of climate change. They show that it is possible to have a thriving economy and a healthy environment, and that businesses have a responsibility to contribute to the global effort to combat climate change and to promote a more sustainable future.