World of Concrete 2015 Day 2

Photos from the second day around the show at World of Concrete 2015

February 4, 2015

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Five Predictions for an Unpredictable 2021

No one predicted the onset of COVID-19 and the degree to which the pandemic would impact construction. But in many ways, it catapulted us forward. Here’s what we predict for 2021.

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New USDOT Appointees from President Biden

The Biden-Harris administration has nominated a broad slate of appointees to take over crucial positions within the U.S. Department of Transportation.

A Concrete Overlay Design to Include in Your Project

A Concrete Overlay Design to Include in Your Project

Rockett’s Glass & Concrete Overlay has a long-standing relationship in the concrete industry. Learn from Rockett’s, schedule a session today.

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Water Add Meter (WAM) - Real-time Calculation of W/C Ratio

The Water Add Meter measures the amount of water added before and during the pour to help validate concrete quality. Capture accurate, real-time recordations throughout the delivery cycle.

Mechanical impedance can be calculated by dividing the maximum force, when a hammer collides concrete surface, with initial velocity of the hammer rebound.

A Study on Estimating Concrete Compressive Strength by Mechanical Impedance

An in-depth analysis of the theoretical background of reactive mechanical impedance measurement and results of laboratory and field tests on compressive strength estimation of concrete.

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Vapor Intrusion Mitigation Part 1: Reimagining the Next Evolution

Scientists created a spray-applied barrier material to replace the SBR-based latex waterproofing Part one of the Vapor Intrusion Mitigation series.

Concreting in the winter should be beautiful that time of year, all that snow.

Cold Weather Concreting - Tips for Smaller Projects

The factors and considerations concrete contractors should be aware of for placing concrete in cold weather

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Aquajet Maximizes Productivity and Safety Through Training Program

Aquajet offers training opportunities to maximize productivity and safety on the jobsite, as well as provides education options on-site or through its network of facilities across the United States.

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Vapor Intrusion Mitigation Part 3: Safety

Researchers have found ways to upgrade existing vapor barrier technology, adding components such as nitrile and aluminum to create barriers with vastly improved chemical resistance. Part three of the Vapor Intrusion Mitigation series.

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Vapor Intrusion Mitigation Part 2: An Easy & Fast Install

Cost savings, minimize mistakes, and reducing liability are three of the benefits of a nitrile-core asphalt latex for vapor mitigation. Part two of the Vapor Intrusion Mitigation series.

Above and below: Properly placed/supported reinforcement will result in properly located reinforcement in the slab. Consult manufacturers' literature for maximum chair and other support spacing and use a 12-inch minimum reinforcement spacing so workers can avoid walking on the reinforcement.

How To Reinforce Concrete Slab on Ground to Control Cracking

Steel reinforcing bars and welded wire reinforcement provide crack width control in nonstructural slabs-on-ground.

“Guide to the Code for Assessment, Repair, and Rehabilitation of Existing Concrete Structures' is published as a companion to ACI 562-19.

2021 Update to Concrete Assessment, Repair and Rehab Guide

The American Concrete Institute and International Concrete Repair Institute updated the “Guide to the Code for Assessment, Repair, and Rehabilitation of Existing Concrete Structures" providing information on how to properly use the ACI 562.

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University Looks to Improve Concrete, Cement with Pryolyzed Ash

Technique by Rice University chemist James Tour produces turbostratic graphene flakes that can be added to substances like films of polyvinyl alcohol that better resist water in cement paste and concrete, increasing compressive strength.

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What is Concrete Testing Software & How Can It Help?

Four ways concrete testing software - or a construction materials testing platform - can make the concrete testing process easier and more accurate for concrete contractors.

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Keystone Design Manual & KeyWall PRO Operating Guide

A Concrete Overlay Design to Include in Your Project

A Concrete Overlay Design to Include in Your Project

Rockett’s Glass & Concrete Overlay has a long-standing relationship in the concrete industry. Learn from Rockett’s, schedule a session today.

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U.S. Economy Loses 140,000 Jobs in December

The weakness largely reflected job cuts at restaurants but job losses in leisure and hospitality and in private education were partially offset by gains in professional and business services, retail trade and construction

Sinan Husic (left) and Robin Papp (right) study low-carbon footprint building materials at Carleton University in Canada.

Carleton Students Research Low-Carbon Concrete, Sustainable Building Materials

Carleton University students in Canada are continuing hand-on learning and researching building materials with a low carbon footprint.

It's No April Fools - ACI Announces Dates for the Spring Convention

The 2021 ACI Concrete Convention this spring is now virtual. The ACI Virtual Concrete Convention is planned for March 28 to April 1, 2021

The Sakrete Pro-Mix family: Concrete Repair, Accelerated Concrete Mix, All-Purpose Cement Mix

Sakrete Pro-Mix Family

The Sakrete Pro-Mix™ Line offers speed and jobsite flexibility for commercial and DOT projects.

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Wirtgen Machine Rebuild Program

Downtime is the last thing you want during the season. That's why Wirtgen offers the Machine Rebuild Program. Get your Wirtgen, Vogele, Hamm & Kleemann machines ready for 2021 now.

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Case Study: Reconstructing a Historical 500-Year Old Bridge

After the Shanghai Huanqing Bridge, China, collapsed, Cintec was asked to aid with repairs

New ACI Member Benefits Launched

The American Concrete Institute's new member benefits include access to all ACI University live webinars, courses, access to practices, guides, reports and volumes.

Panels of Form A Tube interlock together to take the intended shape. The more panels you use, the larger the circumference. Panels slide into place easily.

Form-A-Tube Forms - Build Forms of Any Size, Anywhere

Form-A-Tube allows contractors to instantly construct forms for shoring up pilings with cement. The system builds forms of any size on site, making it easy to use even in remote locations.

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Husqvarna Consolidates Surface Preparation Brand Portfolio

HTC products, services and solutions will be rebranded as Husqvarna and integrated into the global Husqvarna offering — consolidating its brand portfolio in the surface preparation segment.

Controlling the Frequency of your Concrete Vibrator

This Digging Deeper Podcast episode talks about concrete vibration, what it does, why it’s important – and why you want to control the frequency.

Blue Planet’s limestone-coated light weight aggregate specified in Interim Boarding Area B at San Francisco International Airport was included in concrete poured in 2016 by Central Concrete. Testing showed that it met all necessary specifications.

Investment to Create Synthetic Limestone Aggregate

Using sequestered carbon dioxide, Blue Planet Systems Corp. is developing a construction-grade rock, and ultimately concrete, that would have net-zero or net-negative carbon footprint.