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Concrete is the second-most used material in the world. We need it to support bridges, buildings, patios, staircases, countertops, and more—and its use has been growing and tripling in the past forty years. 

The essential building material comprises water, coarse aggregates, like sand and gravel, and a binding agent—which is where cement, an especially carbon emissions heavy product, comes in. 

 According to the International Energy Agency, the cement sector is the third-largest industrial energy consumer in the world, consuming seven percent of industrial energy use. It is also the second-largest industrial emitter of carbon dioxide, responsible for seven percent of global emissions. Most emissions occur when raw materials, typically clay and limestone, are heated to more than 2500 degrees Fahrenheit to become the super-strong binding material. Roughly 600 kilograms of carbon dioxide are released per ton of cement produced. 

But, sustainable, “green” cement is becoming increasingly popular, especially considering the environmental footprint of traditional cement. A recent example came out of the University of Tokyo last year, when researchers Kota Machida and Yuya Sakai made cement out of food waste. Food waste has been used as a filler in cement alternatives before, but Machida and Sakai developed the world’s first process for cement made entirely from food waste.

The duo spent months mixing food waste with plastic to get the materials to stick together. Finally, they found the right combination of temperature and pressure to make cement from just the food waste without additives. Using a “heat pressing” strategy typically used to make construction material from wood powder, they mixed the food waste powder with water and pressed it in a mold heated to 350 degrees Fahrenheit. The researchers say the tensile or bending strength of the cement is more than three times the strength of ordinary concrete. 

[Related: Tech to capture and reuse carbon is on the rise. But can it help the world reach its climate goals?]

“The most challenging part was that each type of food waste requires different temperatures and pressure levels,” Sakai said in a press release. They have used tea leaves, orange and onion peels, coffee grounds, Chinese cabbage, and even leftovers from lunch boxes. 

“Our ultimate hope is that this cement replaces plastic and cement products, which have worse environmental impacts,” said Machida in an interview with the AP earlier this month.

Engineers and researchers have been developing innovations to reduce cement and concrete’s carbon footprint for years. In 2023, scientists from the University of Tokyo created a process for making concrete that reuses old concrete products (which can often go to waste), heats materials at lower temperatures, and captures carbon dioxide out of the atmosphere. 

In 2023, researchers from the National Taipei University of Technology in Taiwan and the Water Resources Department in India discovered that natural wastes from agricultural and aquaculture farming could partially replace coarse materials and binding materials in green concrete. Plenty more alternatives exist, and though these innovations are early in their development, they bring building materials closer to meeting reduced carbon emissions goals.  

But when it comes to scaling food waste cement up to use for buildings, Sohan Mone, a structural design engineer with multi-national infrastructure company Ferrovial, says it could be challenging to convince companies to make the swap. 

“To change how we use cement entirely would require a lot of fundamental changes in our industry,” Mone says. “All of the infrastructure is geared towards how cement currently works, from how we install it to how we transport it, everything.”

That isn’t to say that it couldn’t be done or isn’t worth it, Mone adds. But one type of technology won’t fix all the issues in the building industry.

“The second you apply a shearing force, like any tension or bending, [cement used on its own] shatters,” Mone says. “It’s not good at taking tension.” 

So, using food cement or cement alternatives in concrete for more complicated and building-intensive purposes would require significant safety and durability testing, Mone says. And the organizations that regulate the industry and contractors themselves would have to be convinced of its viability.  

“We’re heavily regulated, rightly so, and we’re not very free in terms of what materials we can use,” Mone said. “The life cycle of these structures can be hundreds of years, and it’s an open question about how some of these things perform when exposed to the environment over time. There’s always that fear of not knowing how something new will react. And concrete itself needs a lot of maintenance.”

[Related: Pollution kills 1 in 6 people worldwide.]

Green materials can also be expensive, which Mone says adds to the difficulty of convincing companies to use them. In big construction projects, it’s more common to see developers choose the most economical plan. But switching to green cement might be worth the cost, especially when concrete use increases as developing countries accelerate construction projects and other countries update aging infrastructure.  

Global cement production could increase by as much as 23 percent by 2050, the Mission Possible Partnership reported in their Concrete Action for Climate plan. Just as cement and concrete are shaping our built environment, their impacts also shape our climate future. 

The cement industry will need to decrease its annual emissions by at least 16 percent by 2030 to meet the Paris Agreement on climate change standards. And because cement and concrete will be crucial for future development, researchers argue that making the material inputs to cement will be one of the fastest ways to reduce emissions and environmental impact. 

“Given the urgency of the challenge and the time taken historically for technology systems to evolve, a considerable push will be needed to get the next generation of low-carbon cements out of the lab and into the market. Not all will succeed, but those that do could have significant decarbonization potential,” Chatham House, a policy institute, wrote in their 2023 Making Concrete Change: Innovation in Low-carbon Cement and Concrete report. 

Growing cities and repairing infrastructure certainly won’t slow down anytime soon. But, with new developments in greener building materials, the carbon impact of revitalizing the built environment doesn’t have to be as hefty.

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WordPress 5.3 Will Change How It Blocks Indexing

WordPress announced an important change to how it will block search engines from indexing websites. This change abandons the traditional chúng tôi solution in favor of the Robots Meta Tag approach. The change brings WordPress in line with the reason for blocking Google, which is to keep the blocked pages from showing in Google’s search results.

This is the Robots Meta Tag that WordPress will use:

Blocking Google From Indexing

It has long been a standard practice to use chúng tôi to block the “indexing” of a website.

The word “indexing” meant crawling of the site by GoogleBot. By using the chúng tôi blocking feature you could stop Google from downloading the specified web page and, it was assumed,  Google would be unable to show your pages in the Search Results.

But that chúng tôi directive only stopped Google from crawling the page. Google was still free to add it to its index if it was able to discover the URL.

So to block a site from appearing in the index, a publisher would block Google from “indexing” the pages. Which wasn’t consistently effective.

WordPress 5.3 Will Truly Prevent Indexing

WordPress adapted the chúng tôi approach. But that’s changing in version 5.3.

Starting with WordPress 5.3, WordPress will adopt the more reliable Robots Meta Tag approach for preventing the indexing of a website.

This change will affect the “discourage search engines from indexing this site” setting. 

This change is an improvement. WordPress publishers can be more secure in knowing that the blocked web pages will not be shown in Google’s search results.

Why Did WordPress Use Robots.txt?

WordPress relied on chúng tôi for blocking the indexing of a website because that’s how everybody kept pages from showing in Google’s search results. That was the standard way of doing it.

Yet even though everybody did it that way, as has been explained, it was an unreliable approach.

The word “indexing” has two meanings:

Indexing can also mean adding a web page to Google’s database of web pages (which is called The Index).

Blocking Google from “indexing” a web page will keep it from seeing the web page but Google could still index the web page and add it to Google’s index. Make sense?

Robots.txt Versus Robots Meta Tag

Keeping a web page out of Google’s index was not the intent of the chúng tôi solution. Doing that is the job of the Robots Meta Tag.

So it’s good to see WordPress embrace the Robots Meta Tag as the solution to blocking web pages from showing in the search engines.

WordPress 5.3 is scheduled to be released in November 2023.

Read the WordPress announcement:

Changes to Prevent Search Engines Indexing Sites

Read Google’s Authoritative Documentation

The Epson Printer Will Print But Not Copy: How To Fix It

The Epson Printer Will Print but not Copy: How to Fix it Selecting the correct paper size should get the job done

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Epson printer prints but won’t copy, it might be due to the wrong printer settings.

To solve this problem, you need to choose the correct paper size for copying.

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The Epson printers are very popular among users. However, many people encountered some severe issues with them, with reports that the Epson printer will print but not copy a prominent one.

If you are also facing this devastating issue, the solutions in this guide will help you fix it quickly.

Why is my Epson printer not copying

If you are wondering why your Epson printer is not photocopying, you don’t need to look past your printer settings.

This is majorly down to the selection of the wrong paper size, which eventually prevents copy/photocopy operation from going through.

What can I do if my Epson printer will print but not copy?

Select Letter if your paper is letter size, and press the OK button.

Select a size from the available paper sizes if you’re copying a photo and press the OK button.

Press the Down arrow to select Paper Type, and do one of the following:

Select Plain Paper if your letter is the paper size, and press the OK button.

Select the size from the available paper types listed above if you’re copying a photo, and then press the OK button.

Press the Down arrow to select Paper Type, and do one of the following:

Select Plain Paper if your letter is the paper size, and press the OK button.

Select the size from the available paper types listed above if you’re copying a photo, and then press the OK button.

Press the Home button, select Copy by pressing the Up arrow, and then press the OK button.

Press OK to adjust the Copy settings.

Under Settings, make the proper changes:

If you’re copying letter-size paper, the Layout should be set to With Border and document size to Letter.

If you’re copying a photo, Layout should be set to Borderless or With Border, and Document Size should be set to the size of your paper.

Press the back button.

Press one of the Start buttons to make your copy in Black & White or Color.

With this, you should be able to fix the Epson l3210 printer not copying or cannot photocopy issue for good.

We have reached the end of this guide on the Epson printer will print, but not copy issue. You should now be able to solve the problem, provided you follow the instructions carefully.

If still, your printer doesn’t copy, contact the Epson support team to guide you through the fixing process. Also, if your Epson printer is not printing at all, check our comprehensive guide to fix it.

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The Americas Just Eliminated Measles, But Vaccination Will Help It Stay Gone

Earlier this week, the Pan American Health Organization/World Health Organization (PAHO/WHO) announced that after a 22 year eradication effort, measles had been eliminated in the Americas.

The victory was declared after a long campaign to vaccinate children against the highly contagious disease most often associated with a high fever and a rash. It can also cause brain swelling and death in severe cases; before a vaccine was developed, the measles killed millions of children worldwide.

But eliminating measles in the Americas isn’t the same as eradicating the disease. For a disease to be eradicated, it has to be absent in all parts of the world, like smallpox was in 1977, when the last naturally occuring case was contracted in Somalia. This news means that there are no longer any known cases caused by strains of the measles virus that are endemic, or native to the region.

In 2024, there have already been 54 cases of measles in the United States. In these instances, the individuals either contracted the disease while traveling outside of the Americas, or they acquired it from another person who had traveled outside and spread it around once they returned. As people go trotting around the globe, it’s not that uncommon for diseases like measles to travel with us.

Thanks to travel, diseases can rebound into a population quickly, even when the disease vector isn’t highly contagious to humans, and even if the distance travelled isn’t very far. Venezuela was the first country in the world to eliminate malaria in the 1960’s, but a recent economic downturn sent people in search of work out of cities and into rural areas where pockets of the disease had survived. There, in the swampy mosquito heaven that is illegal gold mines, the workers contracted the disease, and returned to the cities where it continued to spread through mosquito bites. Without sufficient medical supplies and treatments available the disease has made a horrifying comeback, with hundreds of thousands infected in recent years.

Unlike malaria, which has no commercially available vaccine, measles outbreaks are easily preventable. The measles mumps and rubella (MMR) vaccine is widely available, and can reduce the incidence of death by other infectious diseases.

But vaccinations only work if people get vaccinated. Measles outbreaks in 2014 and 2024 infected hundreds of people in the United States, and were traced back to a measles outbreak in the Philippines. The majority of people who contracted the disease in the United States during the 2024 and 2014 outbreaks were unvaccinated.

In order to prevent measles from spreading in a population 93 percent of people need to be vaccinated. According to the CDC’s latest National Immunization Survey, 23 states and Puerto Rico had MMR vaccination rates in children that were above that 93 percent threshold and 18 states had vaccination rates in children above 90 percent. But that still leaves a long way to go to minimize the risk of measles to communities across the United States.

Eliminating measles in the America’s is a great start, but until measles is permanently eradicated, like smallpox was in 1977, keep getting vaccinated.

Honor’s Magic Vs Has Top Hardware, But Will It Beat Samsung Software?

This happens sometimes in tech journalism – a brand is so keen to show off its shiny new thing that it lets reporters and YouTubers take a look at a product before it is ready to ship, as long as they promise not to talk about the unfinished stuff.

That’s why I agreed, somewhat begrudgingly, to have a play with the Honor Magic Vs before it was available with software that customers will actually use.

I chose to still write about it despite the restrictions because the hardware is very impressive, and I feel it succeeds where Honor claimed it does: in working well as a regular smartphone.

The downfall of expensive folding phones that open to tablet size such as Samsung’s Galaxy Z Fold 4 is their outer displays are often restrictive. In the Z Fold 4’s case, it’s too thin, meaning apps appear squashed and typing with one thumb, let alone two, is cramped and can result in typos.

By contrast, Honor VP of global product marketing Clement Wong told Tech Advisor the goal of the Magic Vs was to make a folding phone with a tablet screen inside that people would still buy and use as their main smartphone.

The problem with competing foldables, he said, is their outer displays have odd aspect ratios and offer a bad user experience, so people still use a normal slab smartphone alongside their fancy folding device.

After two weeks using the Magic Vs, I am inclined to agree Honor has done a good job with the outer display. It’s a 120Hz 6.45in OLED screen that crucially is 21:9, an aspect ratio often found on ‘normal’ phones.

Add to that the fact the Magic Vs also folds shut totally flat – unlike the wedged Z Fold 4 – and you’re left with a foldable that does genuinely feel more like a normal phone, albeit a lot thicker.

One downside is the folding mechanism is a little unpolished. When opened fully, it feels and looks as though the hinge is trying to close a little, as it doesn’t snap completely flat. But Honor has worked to simplify the hinge mechanism from the original Magic V released earlier this year, resulting in a pleasingly clean design.

The triple camera module on the back also protrudes, so the Magic Vs is still a bit of a chonk and not everyone will love the matt, sparkly cyan colour of the sample I checked out. The inner display is a decent 7.9in panel but it’s only 90Hz and you can feel the crease in the middle and easily see it in most lighting conditions.

I can’t talk much more about the Magic Vs, but I’ve been promised a full retail review sample in the new year. Honor has yet to confirm which countries will officially get the foldable, or how much it will cost, but it’s set for a “global” launch.

If the Magic Vs has useful, reliable software and, more importantly, a competitive price, it could end up the leading competitor to Samsung’s Z Fold series in Europe, leapfrogging Oppo, Huawei and Xiaomi in the process.

For a brand that not long ago was the youth-focused budget brand of Huawei, that would be very impressive indeed.

Ai Might Be The Future. But Can It Also Predict It?

We all know that artificial intelligence has been the hot topic of recent times and that it has been adopted by companies covering virtually every sector. So these days, when you’re dealing with an automated answering service, it’s highly likely that there is no human intervention at all. This trend is set to continue and reach into many new areas. But there are even more exciting prospects ahead that suggest that the algorithms used in AI may soon start to enable increasingly accurate predictions of future events. Indeed, this is something that has also started to occur – and in some quite surprising ways. The theory behind it is quite simple: by combining the processing of big datasets and using the algorithms that drive AI, an ever-more accurate model of future events can be created. One of the leading exponents in this reasonably new field is

We all know that artificial intelligence has been the hot topic of recent times and that it has been adopted by companies covering virtually every sector. So these days, when you’re dealing with an automated answering service, it’s highly likely that there is no human intervention at all. This trend is set to continue and reach into many new areas. But there are even more exciting prospects ahead that suggest that the algorithms used in AI may soon start to enable increasingly accurate predictions of future events. Indeed, this is something that has also started to occur – and in some quite surprising ways. The theory behind it is quite simple: by combining the processing of big datasets and using the algorithms that drive AI, an ever-more accurate model of future events can be created. One of the leading exponents in this reasonably new field is Black Swan Technologies whose clients include Disney. Among the work they have carried out for the entertainment giant was predicting the likely popularity of Frozen before release. By looking at the data around similar animated titles as well as examining popular genres and types of film on YouTube it enabled them to accurately gauge even how many copies would be sold once the movie was released on DVD. Retailers have also been quick to start experimenting with Black Swan’s technology with supermarkets using it to project just when and how many of their customers will be choosing to barbecue on any given weekend. Western Canada Fashion Week 2023 Spring ” ( CC BY-SA 2.0 ) by IQRemix The fashion industry is also one that is always looking towards what are going to be the trends for future seasons. Again, AI is being used to help these predictions to become more accurate. This is facilitated by a system that scours social media and e-commerce sites to analyze colors, sizes and patterns that appear most frequently and which may be pointing towards the direction that styles may be headed. On a less frivolous note, healthcare is another sector in which the ability to predict future situations is being trialed. One of the best-known exponents is Diagnostic Robotics , a business founded and headed up by Kira Radinsky Ph.D. with offices in Tel Aviv and New York. The fact that much of medicine is already so heavily statistics-based is obviously useful, but it needs AI to add that extra dimension. Trading in stocks, shares and currencies is another area in which being able to accurately predict the future can also mean the difference between success and failure. More and more trading platforms appearing and being listed on sites like Stockapps UK . There is already plenty of choice and most offer extensive support. The above site rates the platforms according to a vast array of key features, such as commission or products offered, such as CFD trading. It’s therefore logical to imagine that one day AI support could number among those factors. This would obviously give an edge over the competition – it could well take many providers to the next level. So we can confidently predict that AI will become increasingly effective in defining what the future holds in a wide variety of ways. And, when it does reach its full potential, it will create a very different world indeed.

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