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Civil Engineer Blog
Civil Engineer and Civil Engineering Student Blog
Application of Sprayed Concrete or Shotcrete
Uses of sprayed concrete (or shotcrete) Over the past century, sprayed concrete has replaced the traditional methods of lining tunnel profiles and has become very important in stabilizing the excavated tunnel section. Sprayed concrete is a single term that describes various component of a complete technology: the material sprayed concrete the sprayed concreting process the […]
The World’s 6 Largest Oil Rigs
When asked to name the tallest structures in the world, you would expect that your list would include things like the Tokyo Sky Tree and the Burj Khalifa skyscraper in Dubai. But have you ever thought about oil rigs? These enormous offshore platforms house thousands of oil rig workers all over the world – from […]
How To Create Your Own Urban Green Space
The opportunities afforded by cities have attracted millions to live in these urban areas. While these offer their own impressive sights, there are every few green spaces that people can go to for relaxation and renewal. They are often forced to travel far because they don’t have sanctuaries of their own. This can be impractical […]
Advantages of Purchasing a Compactor
A compactor is essential in a wide variety of retail stores and other businesses that produce large amounts of waste. You might not have a trash compactor right now at your business. This is something that you might want to seriously consider investing in. It can change the way your facility operates and make life […]
HOW TO SOLVE THE BIGGEST PROBLEMS WITH GUTTERS
Gutters play a key part in securing the home, foundation, and surroundings. Gutters are a vital component in the house to keep water far from home to a sheltered zone or to the drainage. Gutters get clogged because of the tree limbs, leaves, garbage that stall out in the gutters. As the season changes from […]
Civil Engineering News -- ScienceDaily
Civil Engineering News and Research. From new mathematical models for building better structures to new corrosion-resistant composites, read all the latest discoveries in civil engineering here.
A recipe for concrete that can withstand road salt deterioration
Engineers have known for some time that calcium chloride salt, commonly used as deicer, reacts with the calcium hydroxide in concrete to form a chemical byproduct that causes roadways to crumble. A civil engineer is working on a new recipe for concrete, using cast-off products from furnaces, that can hold its own against the forces of chemical erosion.
Oddball enzyme provides easy path to synthetic biomaterials
Materials scientists have written the recipe on how to use an oddball enzyme to build new biomaterials out of DNA. The work provides instructions for researchers the world over to build self-assembling molecules for applications ranging from drug delivery to nanowires.
Fast, simple way to create two-dimensional electronic circuits
Team discovers fast, simple way to create two-dimensional electronic circuits that could potentially lead to a new generation of electronic devices.
Fabrication technology in the fourth dimension
Scientists use the term 4-D printing to refer to the simple production of objects that can transform their shape at different times. Researchers have now taken this approach one major step further by developing a construction principle that can produce load-bearing and predictable structures.
'Persistent photoconductivity' offers new tool for bioelectronics
Researchers have developed a new approach for manipulating the behavior of cells on semiconductor materials, using light to alter the conductivity of the material itself.
Tighter building controls needed to achieve government global warming targets
Thousands of new homes, schools and offices may be using much more energy than they should, and the reason is rather unexpected, according to new research.
Zapping bacteria with sanitizers made of paper
Imagine wearing clothes with layers of paper that protect you from dangerous bacteria. A research team has invented an inexpensive, effective way to kill bacteria and sanitize surfaces with devices made of paper.
System can 3-D print an entire building
Researchers have developed a system that can 3-D print the basic structure of an entire building.
Move over, Superman! New method sees through concrete to detect early-stage corrosion
A noninvasive 'spectral fingerprint' technique using terahertz waves has been developed that reveals the corrosion of concrete-encased steel before it can cause any significant degradation of the structure it supports.
Wonder material? Novel nanotube structure strengthens thin films for flexible electronics
Reflecting the structure of composites found in nature and the ancient world, researchers have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
Scientist's new approach may accelerate design of high-power batteries
A model for designing novel materials used in electrical storage devices, such as car batteries and capacitors, has now been designed by researchers. This approach may dramatically accelerate discovery of new materials that provide cheap and efficient ways to store energy.
Finding order and structure in the atomic chaos where materials meet
Materials science researchers have developed a model that can account for irregularities in how atoms arrange themselves at the so-called 'grain boundaries' -- the interface where two materials meet. By describing the packing of atoms at these interfaces, the tool can be used to help researchers determine how grain boundaries affect the properties of metal alloys and other materials.
Engineering technique is damaging materials research reveals
A technique that revolutionized scientists' ability to manipulate and study minuscule materials, may have dramatic unintended consequences -- altering their structural identity, new research reveals.
New 3-D printing method creates shape-shifting objects
A new 3-D printing method has been developed to create objects that can permanently transform into a range of different shapes in response to heat.
New method for 3-D printing extraterrestrial materials
3-D printing with lunar and Martian dust-based inks presents a new, sustainable method for extraterrestrial manufacturing of soft and hard structures and objects.
Triple treatment for heat-exchangers: New nano-coatings have an anti-adhesive, anti-corrosive and antimicrobial effect
When processing milk and juice, the food industry is using heat exchangers in numerous steps throughout the process. To have no risk to the consumers, heat exchangers have to be free from microbes. Especially in the numerous grooves and recesses of the heat exchanger, persistent biofilms can remain stuck. As a result, heat exchangers must be cleaned at regular intervals using aggressive chemicals. These increase the sensitivity for corrosion, especially if mild steel is used as heat exchanger material.
Predicting the limits of friction: Scientists look at properties of material
Materials scientists have developed a model to predict the limits of friction behavior of metals based on materials properties -- how hard you can push on materials or how much current you can put through them before they stop working properly.
Green laser light probes metals for hidden damage
Imagine being able to check the structural integrity of an airplane, ship or bridge, without having to dismantle it or remove any material for testing, which could further compromise the structure. That's the promise of a new laser-based technique that chemists are developing to reveal hidden damage in metals.
Team highlights work on tuning block polymers for nanostructured systems
High-performance materials are enabling major advances in a wide range of applications from energy generation and digital information storage to disease screening and medical devices. Block polymers, which are two or more polymer chains with different properties linked together, show great promise for many of these applications, and a research group has made significant strides in their development over the past several years.
Interior positioning system for dynamic environments
There is no positioning technology, such as GPS, for the indoor area. This makes location at shipyards, for instance, very difficult. In ship building, the environment changes constantly as a result of the construction process. Moreover, the metallic environment inhibits wireless communication that is required for location. Now, a research team has developed a new system to locate persons in a dynamic environment inside a hall under the SchiV 3.0 project.
Heated pavement technology tested at Des moines International Airport
Engineers are testing heated pavement technologies at the Des Moines International Airport. They've installed two test slabs of electrically conductive concrete. And the pavement has effectively cleared ice and snow.
Engineers dive into big data to develop better system to manage traffic incidents
Traffic researchers are developing technology that will take the huge amounts of data collected by the Iowa Department of Transportation, sort through it all and identify problems. The goal is early detection of traffic incidents and better traffic management.
Molecular 'treasure maps' to help discover new materials
Scientists have developed a new method which has the potential to revolutionise the way we search for, design and produce new materials.
New feedback system could allow greater control over fusion plasma
A physicist has created a new system that will let scientists control the energy and rotation of plasma in real time in a doughnut-shaped machine known as a tokamak.
Silk sensor could speed development of new infrastructure, aerospace and consumer materials
Researchers have found a way to use molecules of dye to see inside some of the new composite materials being tested for bridges, cars and sporting goods.
Next-gen steel under the microscope
Next-generation steel and metal alloys are a step closer to reality, thanks to an international research project. The work could overcome the problem of hydrogen alloy embrittlement that has led to catastrophic failures in major engineering and building projects.
Engineers' 'photonic doping' makes class of metamaterials easier to fabricate
By carefully combining multiple structures, metamaterials can exhibit properties that don't naturally exist. A research team has a new, simpler way of making them, using a concept dubbed 'photonic doping.'
Designing the fuel-efficient aircraft of the future
Researchers are using the Stampede supercomputer to design novel, fuel-efficient, wing designs for jets, and to develop tools that can help the industry build more efficient aircraft. The researchers are exploring wings with longer spans, made of complex composites and that morph during flight.
Novel 3-D manufacturing leads to highly complex, bio-like materials
Researchers have developed a unique, 3-D manufacturing method that for the first time rapidly creates and precisely controls a material's architecture from the nanoscale to centimeters -- with results that closely mimic the intricate architecture of natural materials like wood and bone.
Synthetic tooth enamel may lead to more resilient structures
Unavoidable vibrations, such as those on airplanes, cause rigid structures to age and crack, but researchers may have an answer for that -- design them more like tooth enamel, which could lead to more resilient flight computers, for instance.
Colloidal spheres coaxed to self-assemble into photonic crystals
It is difficult to make colloidal spheres self-assemble into photonic crystals, which are valued for their optical properties. A team of engineers and scientists report they have found a pathway toward the self-assembly of these elusive photonic crystal structures never assembled before on the sub-micrometer scale.
Bioinspired process makes materials light, robust, programmable at nano- to macro-scale
A new bioinspired process combines top-down and bottom-up assembly to turn silk protein into materials that are easily programmable at the nano-, micro- and macro-scales; ultralight; and robust. Structures made included a web of silk nano fibers able to sustain a load 4,000 times its own weight.
Oil and gas wastewater spills alter microbes in West Virginia waters
Wastewater from oil and gas operations -- including fracking for shale gas -- at a West Virginia site altered microbes downstream, according to a new study. The study showed that wastewater releases, including briny water that contained petroleum and other pollutants, altered the diversity, numbers and functions of microbes. The shifts in the microbial community indicated changes in their respiration and nutrient cycling, along with signs of stress.
Scientists decipher the nanoscale architecture of a beetle's shell
A professor of mechanical and materials engineering has found a way to analyze the fibrous nanostructure of a beetle's lightweight but durable shell.
New design for longer lasting night-vision cameras
Scientists have developed a new approach to improving the technologies in night-vision cameras -- potentially making their all-too-frequent breakdowns a thing of the past.
In great shape: Metamaterial is world's first to achieve performance predicted by theoretical bounds
Isomax is now proved to be the world's first to achieve the performance predicted by theoretical bounds, reports a new study.
Designing new materials from 'small' data
Researchers have developed a novel workflow combining machine learning and density functional theory calculations to create design guidelines for new materials that exhibit useful electronic properties, such as ferroelectricity and piezoelectricity.
Digital fabrication in architecture
Society faces enormous challenges in constructing high-quality, future-oriented built environments. Construction sites today look much like the building sites did at the beginning of the 20th century. Current research on digital fabrication in architecture indicates that the development and integration of innovative digital technologies within architectural and construction processes could transform the building industry -- on the verge of a building industry 4.0. Digital technologies in architecture and construction could increase productivity creating new jobs.
Researchers replicate nature's ability to reflect light to develop innovative materials
An innovative new technique has been developed to mimic one of nature's greatest achievements -- natural structural color.
Eco-friendly concrete created
In the future, wide-ranging composite materials are expected to be stronger, lighter, cheaper and greener for our planet, thanks to a new invention. Nine years ago, an American researcher invented an energy-efficient technology that harnesses largely low-temperature, water-based reactions.
Scientists make new high-tech liquid materials that can manipulate micro-organisms
Scientists have controlled wave-generated currents to make previously unimaginable liquid materials for new technological innovations, including techniques to manipulate micro-organisms.
Mimicking nature's cellular architectures via 3D printing
Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being compressed. The plant’s hardiness comes from a combination of its hollow, tubular macrostructure and porous, or cellular, microstructure. These architectural features work together to give grass its robust mechanical properties. Inspired by natural cellular structures, researchers have developed a new method to 3D print materials with independently tunable macro-and microscale porosity using a ceramic foam ink.
Toward all-solid lithium batteries
A new study unravels the properties of a promising new material for all-solid-state lithium-ion batteries, which could be safer and longer-lasting than traditional batteries.
Life-cycle assessment study provides detailed look at decentralized water systems
The "decentralized" water system at the Center for Sustainable Landscapes (CSL) at Phipps Conservatory and Botanical Gardens, which treats all non-potable water on site, contributes to the net-zero building's recognition as one of the greenest buildings in the world. However, research into the efficacy of these systems versus traditional treatment is practically non-existent in the literature.
Advanced robotic bat's flight characteristics simulates the real thing
Researchers have developed a self-contained robotic bat -- dubbed Bat Bot (B2) -- with soft, articulated wings that can mimic the key flight mechanisms of biological bats.
New study reveals solidification cracking during welding of steel
New research has made a novel breakthrough in understanding how solidification cracking occurs during the welding of steel, an important engineering alloy.
Safety codes can lead to over-built bridges, higher building costs
Bridges built to meet current Canadian safety codes are being 'overbuilt' and may not withstand a major earthquake, says a new report.
Protective wear inspired by fish scales
They started with striped bass. Over a two-year period the researchers went through about 50 bass, puncturing or fracturing hundreds of fish scales under the microscope, to try to understand their properties and mechanics better. These scientists have been trying to replicate the kind of protection combined with flexibility offered by certain kinds of animal scales. Their goal is to create protective gloves that are both resistant to piercing and still flexible enough for factory workers to work in.
New metamaterial can switch from hard to soft -- and back again
When a material is made, you typically cannot change whether that material is hard or soft. But a group of researchers have developed a new way to design a 'metamaterial' that allows the material to switch between being hard and soft without damaging or altering the material itself.
Meeting the challenges of nanotechnology: Nanoscale catalytic effects for nanotechnology
Scientists show nanoscale modifications to the edge region of nanocontacts to nanowires can be used to engineer the electrical function of the interfaces.
'Marine repairmen': Limpets are construction workers of the seashore
New research shows that limpets can repair their damaged shells with biological material so that they are as strong as the originals. However, they are still vulnerable to multiple impacts and 'spalling' -- a well-known cause of failure in engineering materials such as concrete.
Blood-repellent materials: A new approach to medical implants
Medical implants like stents, catheters and tubing introduce risk for blood clotting and infection -- a perpetual problem for many patients. Engineers now offer a potential solution: A specially grown, 'superhemophobic' titanium surface that's extremely repellent to blood. The material could form the basis for surgical implants with lower risk of rejection by the body.
A toolkit for transformable materials
Researchers have developed a general framework to design reconfigurable metamaterials. The design strategy is scale independent, meaning it can be applied to everything from meter-scale architectures to reconfigurable nano-scale systems such as photonic crystals, waveguides and metamaterials to guide heat.
Strength of hair inspires new materials for body armor
In a new study, researchers are investigating why hair is incredibly strong and resistant to breaking. The findings could lead to the development of new materials for body armor and help cosmetic manufacturers create better hair care products.
Discovery could lead to jet engines that run hotter -- and cleaner
Researchers have made a discovery in materials science that sounds like something from the old Saturday morning cartoon Super Friends: they've found a way to deactivate 'nano twins' to improve the high-temperature properties of superalloys that are used in jet engines.
For first time ever, x-ray imaging captures material defect process
A new approach has been uncovered to detail the formation of material defects at the atomic scale and in near-real time, an important step that could assist in engineering better and stronger new materials.
Deciphering the beetle exoskeleton with nanomechanics
Engineers have employed a creative way to identify the geometry and material properties of the fibers that comprise a beetle's exoskeleton. This work could ultimately uncover information that could guide the design and manufacturing of new and improved artificial materials through bio-mimicry.
How to inflate a huge hardened concrete shell
An alternative for resource intensive formwork for the construction of concrete domes has been developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure.
A possible solution to a long-standing riddle in materials science
An international team of scientists may have solved the 30-year-old riddle of why certain ferroelectric crystals exhibit extremely strong piezoelectric responses.
DNA nanotubes build a bridge between two molecular posts
Researchers have coaxed DNA nanotubes to assemble themselves into bridge-like structures arched between two molecular landmarks on the surface of a lab dish.
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