The Concrete Conundrum

Highway Conundrum

Mar 27, 2018 · Developed by IGGA and the American Concrete Pavement Association at Purdue University between 2006 and 2008, the NGCS surface can be installed using conventional diamond grinding equipment, with the first step being to flush-grind the concrete and then to cut longitudinal grooves for a smoother and flatter surface. Finding the Money

The Concrete Conundrum by Alyssa Brody on Prezi

Images GDP and government type will determine whether or not a city invests in sustainable alternatives to the automobile Independent Variable GDP Government Type Car Culture Tourism Size and Age Dependent Variable Cars Per Capita Walk Score: Ranked 3rd by Walk Score Transit

The Embodied Carbon Conundrum: Solving for All Emission

The Embodied Carbon Conundrum: Solving for All Emission Sources from the Built Environment. ... and tools that help building professionals address how much carbon is emitted through the making of materials such as concrete, steel, flat glass and types of insulation. Why embodied carbon matters.

Countertop Conundrum | Corian kitchen countertops, Kitchen

Jun 1, 2013 - Well folks, it's been a good three years since we painted our kitchen cabinets and purchased a new fridge {new stove is just around the corner and new floors are coming next year}. And, because the kitchen is looking better...I've now had my fill with my old green laminate countertops! Something's gotta give, and those…

What Causes Efflorescence and How do You Remove it?

Dec 28, 2005 · Efflorescence occurs with all concrete and is the most frequent problem that concrete contractors face with colored concrete. Owners don't care about “plain” concrete, but colored concrete is another matter. They complain that their contractor didn't give them the color they ordered, and sometimes they withhold payment.

what happens if concrete is poured and freezes, how cold can

Jan 12, 2010 · For the best answers, search on this site I'm Canadian, and an engineer, so I know a lot about pouring concrete in -20 to -30 C weather. As one poster pointed out, the curing of concrete is an exothermic reaction, which is why you sometimes see steam emanating from a freshly poured foundation in the dead of winter.


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How to Keep Concrete Floors From Sweating

If you have concrete in your home that routinely appears to be wet or feels damp, then you may have sweating slab syndrome. This is not actually a problem with the construction, however, but an issue that can often be controlled or eliminated by changing the upkeep of the area and, in some cases, the controlled climate conditions.

Avalanche expert says Conundrum slide likely a 300-year event

One of the top avalanche consultants in the U.S. visited Conundrum Valley on Tuesday and assessed the performance of an avalanche mitigation wall he designed for a house on Conundrum Creek Road. The avalanche was one of the largest Art Mears said he has seen in …

Conundrums – Corbettmaths

The Corbettmaths Conundrums - daily mathematical puzzles

Visible Pour Lines – Are They A Problem?

May 16, 2014 · Home Concrete Visible Pour Lines – Are They A Problem? Visible Pour Lines – Are They A Problem? James R. Baty II May 16, 2014 Join Thousands of Fellow Followers. Login or register now to gain ...

CONCRETE CONUNDRUM! (Modded Ark Primal Fear & Capitalism

2018/2/22 · Welcome to a new season of Modded Ark, Primal Fear and Capitalism! We are using the scorched earth map and a number of mods for a wild west theme. Enjoy! 🚩Ar...

Concrete Sustainability

Jul 17, 2016 · Part 1 of the Concrete Sustainability Series where we look at the problems raised by the production of concrete. ... Concrete Sustainability - Part 1: The Problem Nikola Tosic. ... The Problem ...

The Ugly Truth: How Moisture Can Ruin Your Decorative Concrete

Thanks for the comment. I would reach out to a local decorative concrete contractor to diagnose the problem in order to come up with a proper solution. You may need to, as you suggest, start from bare concrete in order to “fix” the problem and then apply a new topping/sealer, but there may be a better alternative that they can recommend ...

The Organization Culture Conundrum

The culture conundrum refers to the question of how to develop and maintain an organization culture that will facilitate the delivery of sustainable stellar performance. Indeed, given dramatic changes in the nature of organizations, is the concept of culture still relevant?

Fixing Construction's Fixed-Price Conundrum | 2019-11-20

Fixing Construction's Fixed-Price Conundrum. ... The two sides battled over multiple change orders, airport micromanagement, slow team responses and a dispute over weak concrete.

Thermal Cracking of Concrete and Prevention

Thermal Cracking of Concrete and Prevention. Temperature difference within a concrete structure may be caused by portions of the structure losing heat of hydration at different rates or by the weather conditions cooling or heating one portion of the structure to a different degree or at a different rate than another portion of the structure.


Nov 29, 2016 · Amelia Sparavigna “Ancient Concrete Works” Working Paper, Department of Physics, Turin Polytechnic. James Mitchell Crow “The Concrete Conundrum” Chemistry World March 2008 p62.

Air Barriers and Vapor Retarders: The Current Conundrum in

Sep 10, 2018 · Exceptions to this idea include roofs over indoor swimming pools and other high-humidity producing activities or processes. Another exception is a Class I vapor retarder should be installed over a new concrete deck to prevent the moisture in the concrete from drying into the roof system.

Types and Causes of Concrete Deterioration

concrete, the passive corrosion rate is typically 0.1 µm per year. Without the passive film, the steel would corrode at rates at least 1,000 times higher (ACI 222 2001). Because of concrete’s inherent protection, reinforcing steel does not corrode in the majority of concrete elements and structures.

The concrete conundrum - Royal Society of Chemistry

The concrete conundrum Concrete is the single most widely used material in the world – and it has a carbon footprint to match. James Mitchell Crow looks at some of the approaches being used to ease the material’s environmental impact ACITORE | DREAMSTIME.COM CW.03.08.Concrete.indd 62 19/02/2008 10:42:24

The Floor Tolerance Conundrum| Concrete Construction Magazine

Concrete contractors who may be faced with meeting stringent floor surface tolerances should begin to measure floors they have built. The data gathered should be useful in coming to understanding what tolerances can be met by usual construction methods.

How Long Will It Take Hoover Dam Concrete to Cure?

The Hoover Dam concrete would cure in 125 years by conventional or natural methods. Crews, however, used some innovative engineering methods to hasten the process. Nearly 600 miles of steel pipes woven through the concrete blocks significantly reduced the chemical heat from the setting for the concrete.

The Concrete Conundrum – All The Things

Aug 31, 2016 · But it turns out, “ideal” doesn’t immediately translate to “only”. Let’s get something straight though, the rose doesn’t grow from concrete. It grows threw a crack in the concrete. “I like it when a flower or a little tuft of grass grows through a crack in the concrete. It’s so (effing) heroic.” – George Carlin. Yes, George.

Concrete Reasoning Is the Foundation for Learning

Oct 29, 2019 · Concrete reasoning is typically measured in a full assessment of intellectual ability, or IQ. Most extended intelligence tests assess several types of problem-solving abilities, including concrete reasoning. Most brief intelligence tests do not.

Concrete and Abstract Representations (Using Mathematical

Nov 24, 2008 · Once students have mastered the concrete level of performance, introduce appropriate drawing procedures where students problem solve through drawing simple representations of the concrete objects they previously used (e.g. tallies, dots, and circles).

As Seattle Booms, A New Reality: The Carbon-Concrete Conundrum

As the Pacific Northwest economy booms, it’s using a lot of concrete to build buildings, roads, and other infrastructure. Making all that concrete is a big part of our carbon footprint, and it all comes from one plant: Ash Grove in south Seattle. Continue Reading As

Moisture Problems Between the Flooring and the Slab

For moisture to accumulate between the concrete slab and the flooring, it needs to find its way to that middle layer. In this section, we breakdown the main ways water can get into your concrete, which causes a buildup of excess moisture, and list effective methods to prevent moisture problems from occurring. Sources of Moisture in Concrete

INCI India: Concrete conundrum: Understanding the building

Concrete has always been in indicator of "civilization." Since its invention in the 19th century, humans have used concrete not only to tame nature but, in many cases, to pave right over it. As a result, the hard-wearing material can be found nearly everywhere there are people.

Contractors rebuilding fire survivors’ homes contend with concrete conundrum

Fun homebuilding fact: Contractors refer to concrete that is still plastic, or wet, as “mud.” Mud, incidentally, also may be the name of a builder who finishes a project months behind schedule ...

Preventing Random Cracks In Concrete

Concrete, when placed in the plastic state, is at its largest volume. As the concrete sets and hardens, it begins to shrink. On average, concrete shrinks 1/8 inch in twenty feet. Concrete is typically designed for compressive strength and has significantly lower tensile strength.

Concrete is tipping us into climate catastrophe. It's payback

Feb 25, 2019 · It’s now payback time and the industry must respond urgently to the problem it has helped to create. Guardian Concrete Week investigates the shocking impact of concrete on the modern world.

Concrete Problems in AI Safety

explore five concrete problems in AI safety. Each section is accompanied by proposals for relevant experiments. Section 8 discusses related efforts, and Section 9 concludes. 2 Overview of Research Problems Very broadly, an accident can be described as a situation where a human designer had in mind a

Concrete Conundrum: Understanding the building material’s

Concrete has always been in indicator of “civilization.” Since its invention in the 19th century, humans have used concrete not only to tame nature but, in many cases, to pave right over it. As a result, the hard-wearing material can be found nearly everywhere there are people.

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