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The Apple House, St Albans, England - Okra
Made from water, lime, hemp, and a cement binder, the blocks from Afrimat Hemp are made of entirely South African hemp.
With breathtaking views over Table Mountain, the world’s tallest building made of industrial hemp is set to open in Cape Town this June.
At 12 stories tall, the Hemp Hotel at 84 Harrison st. used carbon-negative materials that captured more carbon in the walls of the building than it emitted manufacturing them.
South African President Cyril Ramaphosa believes that the cannabis and hemp industry could create 130,000 jobs in places like Afrimat Hemp—the producer of the so-called “HempCrete” blocks which went into the hotel.
Made from water, lime, hemp, and a cement binder, the blocks from Afrimat Hemp are made of entirely South African hemp, which along with selling to corporate clients, are also used to build a number of social housing projects in South Africa and neighbouring Mozambique.
For the Hemp Hotel, Afrimat Hemp partnered with Wolf Architects in Cape Town for the build.
The company admit that hemp construction is 20% more expensive than traditional materials, but the urgency with which some corporations want to help tackle climate change offers them a unqiue opportunity: selling carbon credits—but with buildings, rather than trees.
“We can fund forests, or we can fund someone to live in a hemp house. It’s the same principle,” Afrimat Hemp’s carbon consultant Wihan Bekker told African News.
Company data shows that a 430 square foot house (40 square meters) produces 30 fewer tons of carbon than traditional methods, around what a mature tree can sequester in its roots across its lifetime.
-via Good News Network, 5/5/23
5 Best Alternatives to Finally Replace Plastic. Plastic is firmly established in our daily lives, but we all know plastic recycling doesn’t really happen. So what can we do? We can convert starches, fungi, seaweed, heck, even shrimp tails into plastic alternatives and bioplastic. Let’s review five of the most interesting advances I’ve come across — including that shrimpy stuff. But are any of these plastic alternatives actually viable? Or are we literally grasping at straws?
Watch Top 5 New Battery Technologies to Follow in 2024 • Incredible Battery Bre...
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The Benefits Of Hempcrete
This is the house that Hemp built.
The benefits of using Hempcrete in every construction project.
Written by Casper Leitch
The benefits of Hempcrete is that it is a game-changer in the realm of Eco-friendly construction. If you're passionate about industrial hemp, hemp farming, or just want to see our planet thrive, you will be excited by the wonders of this revolutionary building material.
What is Hempcrete? It's a blend of industrial hemp, lime, and water coming together to form a supercharged building material. It's like nature's own recipe for sustainable construction, packed with benefits that go beyond your average brick and mortar.
An example is found in insulation uses. Hempcrete is like a cozy blanket for your home, but better. Its natural fibers create tiny air pockets, acting as a barrier against pesky temperature changes. Whether it's a scorching summer day or a chilly winter night, Hempcrete keeps things just right inside, saving you money on heating and cooling bills.
Hempcrete doesn't just keep you comfy, it keeps you safe too. Thanks to its fire-resistant properties, you can rest easy knowing your home is protected against potential disasters. No need to worry about flames spreading like wildfire, you are protected from fire in building built with Hempcrete.
While most building materials contribute to carbon emissions during production, Hempcrete does the opposite. As it cures, it actually sucks up carbon dioxide from the air, locking it away for good. It's like building your home while giving the planet a big hug.
Why aren't we seeing Hempcrete buildings popping up left and right? It all comes down to outdated regulations and misconceptions about industrial hemp. By spreading the word about the incredible potential of Hempcrete, we can push for policy changes that prioritize sustainability in construction. Imagine a world where every new building is a step towards a greener, cleaner future.
So whether you're into hemp farming, ending hemp prohibition, or just want to see our planet thrive, let's rally together and champion the widespread adoption of Hempcrete. Help educate business leaders and politicians in your community about the benefits, applications, and potential impact on the construction industry and the environment that the use of Hempcrete has.
The Insulation Powerhouse: Unraveling the Secrets of Hempcrete's Thermal Properties
Let's start by taking a closer look at Hempcrete's insulation capabilities – the cornerstone of its appeal as a sustainable building material. Traditional insulation materials often rely on synthetic fibers that are energy-intensive to produce and may contain harmful chemicals. In contrast, Hempcrete harnesses the natural properties of industrial hemp to create a highly efficient thermal barrier.
At the heart of Hempcrete's insulation prowess lies its unique composition. Made from a mixture of hemp hurds (the inner woody core of the hemp plant), lime binder, and water, Hempcrete forms a lightweight yet durable material with excellent insulating properties. The hemp fibers create a matrix of tiny air pockets within the material, effectively trapping heat during the winter months and repelling it during the summer – a phenomenon known as thermal inertia.
But what sets Hempcrete apart from traditional insulation materials is its ability to regulate humidity levels within a building. Unlike synthetic insulation materials, which can trap moisture and promote mold growth, Hempcrete acts as a natural moisture buffer, absorbing excess humidity when conditions are damp and releasing it when the air is dry. This not only helps to maintain a comfortable indoor environment but also contributes to improved air quality and reduced risk of mold-related health issues.
From an environmental standpoint, Hempcrete's insulation properties offer significant advantages over conventional materials. By reducing the need for artificial heating and cooling systems, Hempcrete helps to lower energy consumption and carbon emissions associated with building operations. Additionally, its natural composition makes it biodegradable at the end of its lifecycle, minimizing environmental impact and reducing reliance on finite resources.
Fire Resistance: Protecting Lives and Property with Hempcrete
In addition to its insulation properties, Hempcrete boasts impressive fire resistance – a critical feature for ensuring the safety and longevity of building structures. Unlike conventional building materials, which may combust or release toxic fumes when exposed to fire, Hempcrete exhibits a remarkable ability to withstand high temperatures without compromising its structural integrity.
The secret to Hempcrete's fire resistance lies in its mineral composition and low density. Lime, the primary binder used in Hempcrete, is inherently fire-resistant and acts as a natural flame retardant. When exposed to heat, the lime undergoes a process known as calcination, in which it releases water vapor and absorbs heat energy, effectively limiting the spread of flames and preventing the material from igniting.
Additionally, the low thermal conductivity of Hempcrete helps to slow the transfer of heat through the material, further reducing the risk of fire propagation. This combination of factors makes Hempcrete an ideal choice for fire-prone environments and high-risk applications where building safety is of utmost concern.
Beyond its immediate benefits for building occupants and stakeholders, Hempcrete's fire resistance has broader implications for public safety and disaster resilience. In regions prone to wildfires, hurricanes, or other natural disasters, buildings constructed with Hempcrete can serve as a protective barrier against external threats, providing invaluable peace of mind to residents and emergency responders alike.
Carbon Sequestration: Fighting Climate Change One Building at a Time
Perhaps the most compelling aspect of Hempcrete is its capacity for carbon sequestration – the process of capturing and storing carbon dioxide from the atmosphere. While traditional building materials often contribute to carbon emissions during production, Hempcrete operates in reverse, actively removing carbon dioxide from the air as it cures.
The key to Hempcrete's carbon sequestration potential lies in the carbon-negative nature of industrial hemp cultivation. Hemp plants absorb CO2 from the atmosphere during photosynthesis, converting it into biomass that can be used to produce a wide range of sustainable products, including building materials like Hempcrete. When hemp hurds are mixed with lime and water to create Hempcrete, the carbon stored within the plant material is effectively locked away for the lifespan of the building, reducing net carbon emissions associated with construction activities.
But the environmental benefits of Hempcrete don't stop there. In addition to sequestering carbon dioxide during its production, Hempcrete continues to contribute to carbon mitigation throughout its lifecycle. As a highly durable and long-lasting material, Hempcrete helps to minimize the need for frequent renovations or replacements, further reducing energy consumption and carbon emissions associated with building maintenance and disposal.
From an ecological standpoint, the cultivation of industrial hemp for Hempcrete production offers additional environmental benefits, including soil remediation, biodiversity preservation, and reduced reliance on fossil fuels and synthetic chemicals. By choosing Hempcrete over conventional building materials, builders and developers can play a significant role in combating climate change and building a more sustainable future for generations to come.
Overcoming Barriers to Adoption: Navigating Regulations and Changing Perceptions
Despite its numerous advantages, Hempcrete continues to face obstacles to widespread adoption, ranging from regulatory barriers to entrenched perceptions within the construction industry. In many countries, outdated regulations and misconceptions about industrial hemp have limited the use of Hempcrete in mainstream construction projects, relegating it to niche applications or experimental prototypes.
One of the primary challenges facing the widespread adoption of Hempcrete is the lack of standardized building codes and regulatory frameworks governing its use. Unlike traditional building materials, which have undergone rigorous testing and certification processes, Hempcrete is often subject to a patchwork of regulations that vary from region to region, making it difficult for builders and developers to navigate the permitting process and obtain approval for Hempcrete projects.
Additionally, misconceptions about industrial hemp and its association with psychoactive cannabis have contributed to stigma and resistance within the construction industry and regulatory agencies. Despite the fact that industrial hemp contains negligible levels of THC (the psychoactive compound found in cannabis) and is legally distinct from marijuana under most jurisdictions, lingering concerns about legality, safety, and performance have hampered acceptance of Hempcrete as a viable construction material.
However, as awareness of the environmental and economic benefits of industrial hemp continues to grow, momentum is building for policy changes that support the widespread adoption of Hempcrete in mainstream construction. In recent years, a growing number of countries have enacted legislation to legalize hemp cultivation and expand the use of hemp-based products, including building materials like Hempcrete. These regulatory developments, coupled with increasing demand for sustainable construction solutions, bode well for the future of Hempcrete and its potential to transform the built environment.
The Future of Hempcrete: Opportunities and Challenges in a Rapidly Evolving Landscape
Looking ahead, the future of Hempcrete appears bright, with ample opportunities for innovation and growth in the sustainable construction sector. As builders, architects, and developers continue to seek out Eco-friendly alternatives to conventional building materials, Hempcrete stands poised to capture a larger share of the market and emerge as a mainstream solution for sustainable building projects.
One of the key drivers of growth for the Hempcrete industry is the expanding market for green building materials and sustainable construction practices. With increasing awareness of the environmental and health impacts of traditional construction methods, consumers and industry professionals alike are turning to alternatives like Hempcrete to reduce their carbon footprint and create healthier indoor environments. This growing demand for sustainable building materials, coupled with advancements in hemp cultivation and processing technology, is fueling investment and innovation in the Hempcrete sector, driving down costs and expanding the range of applications for this versatile material.
However, despite its promise and potential, Hempcrete still faces a number of challenges that must be addressed in order to realize its full impact on the construction industry and the environment. Chief among these challenges is the need for continued research and development to optimize the performance, durability, and scalability of Hempcrete as a mainstream building material. While Hempcrete has demonstrated impressive properties in laboratory and small-scale applications, further testing and validation are needed to ensure its suitability for larger, more complex construction projects and diverse climatic conditions.
Additionally, efforts to overcome regulatory barriers and promote acceptance of Hempcrete within the construction industry will be crucial to its long-term success and viability. By advocating for standardized building codes, certification standards, and industry guidelines for Hempcrete construction, stakeholders can create a more supportive regulatory environment that encourages investment, innovation, and adoption of sustainable building practices.
In conclusion, Hempcrete represents a promising solution to the environmental and economic challenges facing the construction industry in the 21st century. With its exceptional insulation properties, fire resistance, and capacity for carbon sequestration, Hempcrete offers a compelling alternative to traditional building materials that is both sustainable and cost-effective. As advocates for industrial hemp, hemp farming, and sustainable development, we have a unique opportunity to champion the widespread adoption of Hempcrete and pave the way for a greener, more resilient built environment. By working together to overcome regulatory barriers, promote awareness, and drive innovation, we can harness the full potential of Hempcrete to create a brighter future for generations to come. Let's build a greener world, one Hempcrete block at a time.
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Eco friendly material for home
Eco-friendly products or practices are designed to minimize the impact on the environment and promote sustainability. This can include using renewable resources, reducing waste, minimizing the use of toxic chemicals, and reducing carbon emissions. Eco-friendly products and practices are often referred to as "green" or "sustainable" because they prioritize environmental protection and preservation. RSR Rungta best civil engineering college in chhattisgarh with is a professional engineering course discipline that it deals with the design, construction, and naturally built environment, including public works like: roads, bridges, canals, dams, airports, sewage systems, pipelines, and railways etc. Civil engineers can create and protect the environment in which we live.
Hempcrete Finally Aproved by Building Code
More than three decades ago a radically new building material started gaining popularity - in Europe: The benefits of hempcrete (a.k.a. hemplime) include exceptional thermal performance, highly effective transmission of humidity, resistance to mould, and acoustic insulation. It is also fireproof, and sequesters more carbon than its industrial production requires. Given all these incredible benefits, it may sound surprising that until now hempcrete has been not been permitted in US building codes. This had to do with hemp being considered an illegal plant. With the legalization of cannabis for medical and even recreational use in many states, the US is finally ready to include hempcrete as a permitted material in its residential building codes.
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What is Hempcrete?
When separating the woody inner portion of the hemp stalk from the main fiber, we get what's called shives. They are also very fibrous, but unlike the main fiber, which is threaded into rope, shives are coarse, broken pieces. This material is what makes up the bulk of hempcrete. The other part is a limestone binder, using either hydrated or hydraulic lime. This is an industrial product, requiring the calcination of lime at very high temperatures in kilns, similar to the production of cement for concrete.
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After the hemp shives are mixed with the lime binder, and combined with the addition of water, the curing process starts. Depending on the type of binder, this could take up to a month. For this reason, the hempcrete is usually molded into blocks, similar to cinder blocks. In comparison, however, hempcrete tends to be lighter, and less brittle than concrete.
An Alternative to Concrete?
Before I continue comparing the characteristics of hempcrete to concrete, I want to get its most important drawback out of the way: Hempcrete has about 5% of the compressive strength of residential grade concrete. This means, it is never meant to be used as a structural material to bear great loads! However, excluding this main disadvantage, hempcrete outperforms concrete in so many other aspects, that it would be a waste dismissing this amazing material for its mere structural weakness.
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First of all, hempcrete is not only highly insulative, but it also has a good thermal mass. Normally these would be contradictory properties, since most other materials with plenty of thermal mass tend to be poor insulators, and vice versa. Hempcrete is a great exception to this rule, due to its efficient R value of between 0.67/cm (1.7/in) and 1.2/cm (3.0/in) and a specific heat capacity of between 1000 J/kg K to 1700 J/kg K. At the same time, hempcrete "breathes", meaning it is great at transmitting humidity, keeping the interior air dry, which creates a comfortable warm sensation.
Other beneficial attributes of hempcrete are that it is fireproof, resistant to moulds, and is highly effective at insulating against acoustic disturbances. Its most notable feature, however, has to do carbon sequestration, making it highly interesting for modern applications, as we are facing an overabundance of carbon in our atmosphere.
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Carbon-neutral... or Carbon-negative?
Even before it is turned into hempcrete, the hemp plant is already highly effective at taking up carbon from the atmosphere. At 15 tons of CO2 per hectare it does this much faster than any forest or commercial crop, while it is fast growing and doesn't require much care or delicate conditions. So growing hemp is already a great way to combat CO2, but hempcrete takes this carbon sequestration a step further.
In its natural cycle, the hemp plant stops taking up carbon once it dies. Sure, by that time it will likely have reproduced, and its offspring can continue the good work, but in the form of hempcrete even the dead hemp plant can continue this process thanks to the lime binder it is mixed with. Due to the carbonation process, the lime continues absorbing CO2, not only during its curing phase, but throughout its entire existence. The amount of this is estimated around -1.6 to -79 kg CO2e/m2.
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This means that even though the production of the lime binder involves a good amount of carbon emissions, it is all made up by the joint effects of growing hemp and converting it into hempcrete. So you could say that hempcrete is not only a carbon-neutral building material, but it is in fact carbon-negative, removing more carbon from the atmosphere than it has put into it.
Time to Start the Future?
Given its amazing properties, and time tested practicality in Europe, there are many ambitious projects related to hempcrete. One such proposed application are the Urban Sequoias, enormous high-rise buildings that are supposed to sequester 1,000 tons of CO2 per year, about the amount of 48,500 trees. Although no Urban Sequoia has been built so far, the technology is highly promising.
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Also, now that the United States has incorporated hempcrete as a permitted material in its 2024 International Residential Code, it can be expected that this it will find further appeal and acceptance among builders, architects, and engineers in far reaching applications.
Sources: 1, 2, 3, 4, 5, 6, 7
Hempcrete was finally approved for Residential Buildings!
The new code, set to be published formally in 2023, will feature Hemp-Lime (Hempcrete) under “Appendix BA.” Specifically, hempcrete was approved as a non-structural wall infill system similar to cob and straw bale construction, according to the report. The approval applies to one- and two-family dwellings and townhouses and should increase the availability of hemp-based building materials and facilitate greener construction projects around the U.S. source: Gangapreneur
The Hemp Building Council had the following posted on their website
Looks Like Scotty will be building that Hemp Home After All ! check out the Video Below of one of the designs I’m considering for my future hemp home!!!
Jean Lotus writes: Hemp building materials were officially approved in the model US residential building code at a Louisville, KY public hearing overseen by the International Code Council (ICC) last week.
Long before I started this Tumblr Blog I was using Word Press to share information about why I will building with hemp.
-Q-n-A with HEMP Building Expert: Mr. Greg Flavall Co-Founder and Technical Director at Hemp-Technologies Replied to My Question on Hemp Building:
I’m designing a Hempcrete home and have been looking into a Catalan Style Spanish Roof for a roof system that does not require lumber. Do you think a hempcrete product would replace the concrete the Spanish masons use? I’ve started a series of articles on the planned build at: Q and A Greg Flavall Hemp Technologie
Mr. Greg Flavall Co-Founder / Technical Director Hemp-Technologies Answered:
“”having looked at your website and design I’m intrigued. Although we have not done this style of roof I do not see what lime could not do the same as cement in this application- if it were sealed correctly. Typically we are using Hemp/Lime for walls which is covered with 15-20mm of lime plaster for weather protection on a vertical plane. We install hemp/lime under the roof where it is protected as insulation and in the floor (above grade only) where it can breathe.””
If I can help future readers or anyone who would like to build with Hempcrete feel free to contact me here or send an email to scottscontracting and I will assist you or will direct you to someone who can.
