Articles tagged with Cement
EPFL-led consortium develops new cement blend that substitutes up to half of Portland cement, promising to reduce CO2 emissions by up to 40%. The new blend, called LC3, is stronger and more robust than traditional cement, thanks to synergistic chemistry between calcined clay and ground limestone.
A new antibacterial orthodontic cement containing dimethylaminododecyl methacrylate (DMADDM) inhibits biofilm formation and reduces lactic acid production. The results show that the DMADDM-containing cement is promising for reducing demineralization in enamel around orthodontic brackets.
Researchers from the Niels Bohr Institute found that adding sugar cane ash to cement makes it stronger, more durable and crumbles less. The ash helps bind water in the cement, saving energy and reducing pollution from cement production.
Researchers from the University of Southern Denmark have discovered that crushed concrete can bind up to 90% of phosphorus, a key contributor to algae growth. The technique uses crushed concrete as a filter to remove excess phosphorus from rainwater, reducing its impact on water quality and aquatic life.
Researchers from the University of California, Berkeley, have found inspiration in ancient Roman concrete to create more durable and sustainable modern concrete. The discovery could help reduce carbon emissions from cement production and improve the lifespan of structures in ocean environments.
Researchers have discovered properties that made ancient Roman concrete sustainable and durable, with potential applications for environmentally friendly modern concretes. The Roman recipe needed less than 10% lime by weight, making it at two-thirds or less the temperature required by Portland cement.
Researchers from Argonne National Laboratory have created a semi-conductor material by turning liquid cement into liquid metal through electron trapping. This process creates metallic-glass material with positive attributes including conductivity, fluidity, and low energy loss.
A Canadian research project is testing the use of low-carbon fuels from construction and demolition waste, railway ties, and asphalt shingles to power cement plants. The goal is to reduce CO2 emissions, with the potential to decrease Canada's carbon footprint by up to 3%.
Researchers at Kansas State University have developed a material that uses biofuel byproducts to make concrete stronger and reduce its carbon footprint. The new material replaced 20% of cement with cellulosic ash from biofuels, increasing the strength of concrete by 32%.
A new psychology study from the University of Texas at Austin suggests that friendships between straight women and gay men are rooted in the absence of deceptive mating motivations. Gay men may provide more trustworthy love advice to straight women because they don't have conflicts with them, unlike other women or straight men.
Jute has been found to enhance the strength and resistance of mortar and concrete by working as a reinforcement fiber. The addition of jute fibers also delays the hardening process, making it beneficial for applications requiring transported pre-mixed cement aggregates.
A GW University researcher is using a green electrochemical process to form cement without CO2 gases, aiming to replace traditional cement production methods. The project could potentially decrease the cost of solar cement and contribute to training the next generation of renewable energy scientists.
A University of Houston civil engineering researcher has received a $2.6 million grant to develop 'smart' cement that can monitor the health of offshore wells during construction and operation. The new material will retain its piezoresistive nature after hardening, allowing for easy detection and localization of structural problems.
Researchers at MIT have developed a new coating for hip implants that promotes bone growth, creating a stronger seal between the implant and the patient's own bone. This coating could prevent premature failure and reduce the risk of infection, allowing patients to walk and perform physical therapy during the healing process.
By using diamonds and dust to simulate extreme pressures, researchers gained new insights into calcium-silicate-hydrate, a critical binder in concrete. The study aims to reduce carbon emissions and create stronger, more efficient cements.
Vertebral fractures, often due to osteoporosis, can lead to severe consequences like spinal deformity and mortality. IOF recommends a systematic approach to manage vertebral compression fractures with minimally invasive techniques like vertebroplasty and balloon kyphoplasty.
Researchers at the University of Leeds are collaborating with artist Victoria Ferrand Scott to investigate new uses for concrete in art. The project aims to push the boundaries of creative possibilities for this often-maligned material, exploring alternative mixes and high-tech processing methods to create large-scale sculptures.
Vertebroplasty is effective in providing greater pain relief than conservative treatment, resulting in a significant reduction in Visual Analog Scale (VAS) scores. Patients experienced immediate and sustained pain relief lasting up to one year, making it a safe option for those with acute fractures.
Researchers discovered that barnacle adhesive polymerization is related to blood clotting, with a trypsin-like serine protease and human factor XIII proteins involved. The team found that the glue's proteins are remarkably similar to those found in human blood clots.
Researchers at Louisiana Tech University have developed innovative geopolymer concrete technology that utilizes fly ash to reduce CO2 emissions by up to 90%. The new material boasts higher corrosion resistance, fire resistance, and compressive strength compared to traditional Portland cement.
Researchers at MIT have cracked the code of cement's molecular structure, finding it to be a hybrid with characteristics of both crystalline and amorphous structures. This discovery could lead to the development of more durable and environmentally friendly concrete.
A world-first study has revealed that percutaneous vertebroplasty, a common treatment for painful osteoporotic fractures, is not an effective treatment. The study found no significant benefits of the procedure in improving symptoms or quality of life over six months.
A new study found that relief of pain and improvement in function were similar in patients treated with vertebroplasty and simulated vertebroplasty without cement injections. The study raises questions about the procedure's long-term efficacy, suggesting that other factors may contribute to its benefits.
The University of Leeds is working on a new type of body armor made from cement, combining super-strong cement with recycled carbon fibre materials to create a material tough enough to withstand most types of bullets. The project aims to provide cost-effective protection for people at risk, such as security guards and reporters.
Researchers from Rovira i Virgili University find that using mud from waste water treatment plants as an alternative fuel reduces CO2 emissions by 140,000 tonnes between 2003 and 2006. This sustainable solution enables cement factories to power their operations without harming human health.
Researchers at MIT identified the cause of concrete creep and found a way to slow its rate, enabling ultra-high-density materials that can last hundreds of years. This breakthrough could lead to enormous cost-savings and reduced CO2 emissions in construction.
A recent study by Washington State University professor Liv Haselbach found that concrete can absorb more CO2 than previously estimated, particularly when reabsorbed into the material over time. This could lead to a lower overall carbon footprint for the concrete industry.
A new material developed at the University of Michigan can heal itself when it cracks due to its designed narrow hairline cracks. The self-healing concrete recovered most of its original strength after being subjected to a 3% tensile strain, making it safer and more durable for infrastructure.
A study found cone-beam CT to be highly sensitive and specific in detecting cortical defects before and after percutaneous vertebroplasty, comparable to MDCT. Cone-beam CT also identified cement leakages without the need for additional radiation exposure.
Engineers are developing new biological cements to repair burst fractures of the spine, a major leap forward in treatment. The novel cement materials mimic the chemical composition of bone and can be injected at the fracture site to stabilize the spine with minimal invasive surgery.
A team of researchers from NIST and Northwestern University used advanced techniques to classify water in cement, distinguishing between physically bound and adsorbed water. This discovery has significant implications for predicting concrete properties and improving its durability.
Researchers at MIT found that the nanostructure of cement is responsible for its strength and durability, rather than the material itself. By understanding this organization, they aim to develop a new type of concrete with reduced carbon dioxide emissions.
A new procedure utilizes plasma-mediated radiofrequency energy to gently remove soft tissue from spinal tumors, reducing damage to healthy tissue. The technique, called Coblation SpineWand, provides pain relief and improved mobility for patients with decreased risk of complications.
Researchers have developed a new technology that uses a bioactive cement scaffold to improve bone grafts. The scaffold is seeded with patient cells and formed with a calcium phosphate material strengthened by adding chitosan, which enhances cell attachment and reduces the risk of rejection.
A Mayo Clinic study discovered a relationship between vertebroplasty and the development of new fractures, with patients' risk for new fractures in adjacent vertebrae being 4.62 times higher than nonadjacent vertebral fractures. The researchers recommend patients considering vertebroplasty be aware of potential long-term risks.
A Mayo Clinic study found that vertebroplasty significantly improved back pain and activity levels in patients with vertebral compression fractures. Patients' pain during rest and activity improved an average of seven points one week after treatment and remained improved for up to a year.
Korean researchers explore reusing sewage sludge in cement kiln processes, offering a potential solution for reducing organic components' negative impact on the environment. The study's findings focus on mitigating the obstacles associated with high P2O5 and Cl content in sewage sludge, paving the way for its effective utilization.
Researchers have developed a high-performance concrete bridge deck mixture that can extend the life of bridges to 100 years, reducing costs and environmental impact. The mixture uses recycled fly ash, silica fume, and ground granulated blast furnace slag to improve durability and reduce corrosion.
Research reveals that bone cement containing antibiotics can effectively control bacterial growth in the immediate vicinity of the implant, but this effectiveness is short-lived. After just a few weeks, the concentration of antibiotics decreases, making it less effective against bacteria.
Adding crumb rubber to fresh concrete improves strength and durability, reducing thermal expansion, drying shrinkage, and brittleness. This technology can be used in sidewalks, parking lots, and concrete floors, potentially recycling millions of scrap tires annually.
Researchers at Johns Hopkins Medicine found that percutaneous vertebroplasty can be performed safely without venography in most cases. The study showed that 205 consecutive procedures without venography resulted in no major complications or cement leakage, with over 80% of patients experiencing major pain relief.
Researchers are using a technique called fluid inclusion micro thermometry to determine the formation temperature of quartz cement in 300-million-year-old sandstones. The study aims to understand the thermal history of these ancient rocks and its implications for understanding oil and gas formation.
Researchers discovered that adding crumb rubber to PCC improves durability and reduces thermal expansion, cracking, and brittleness. The technology has the potential to recycle all 5 million scrap tires produced annually in Arizona.