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Section: Concrete > Concrete Equipment & Products > Flatwork Accessories
Concrete
Adding Calcium Chloride to Improve Cold Weather Concrete Pouring
American Society of Concrete Contractors (ASCC)
Calcium chloride is the most effective and least expensive cold weather accelerator for concrete. But its use may be limited by building codes or prohibited by some specifications.
January 8, 2014
Getty Images 541278818 Winter Construction Site
Concrete
FedEx Flips for Concrete
Merlo Construction proves concrete’s benefits over asphalt on a recent 1 million square foot distribution facility paving project.
January 8, 2014
Cc Jan14 Cover Story Lead 11267261
Concrete
Controlling Cracks in Slabs with Unusual Panel Geometries
Tips for crack control in concrete panels with unusual shapes.
January 8, 2014
One of the rules for laying out sawed contraction joints is to not join them at angles less than 60 degrees because cracks form across the angle as shown here.
Concrete
Pervious Concrete Pavement Gets Fiber Reinforcement
Two types of synthetic fiber reinforcement added durability to light and medium-to-heavy duty pervious pavement areas
December 6, 2013
Finishing the pervious concrete was done with roller-screed strike-off, covered with plastic and rolled, and then received a plastic cover cure.
Concrete
New Rapid-drying Concrete Technology Shaves 4 Months off Construction Schedule, Cuts Costs on School Project
Aridus is a proprietary concrete mix that provides high early strength, minimizes curl, and reduces drying time and floor covering risks associates with excess moisture vapor in the slab.
September 4, 2013
The outside facade of the Billy Earl Dade Middle School in Dallas, Texas, which opened on time and under budget thanks in part to a new rapid-drying concrete technology.
Concrete
How High Dosage Levels of Macro Fibers Are Improving Concrete Slabs
Slab-on-grade floor and pavement panels shrink less and have almost no curl.
August 21, 2013
When you mix high dosage levels of macro fibers in concrete, one of challenges is to achieve a good blending between concrete and fiber.
Concrete Equipment & Products
'White' Pavement for 'Green' Buses
A California transit company installed concrete pavement in a bus yard that houses compressed natural gas (CNG) buses.
June 27, 2013
Speed Screed Cruiser, used in paving Sonoma County bus yard, includes extensions that allow variable paving widths and crown variations.
Concrete Equipment & Products
Specification Limits on Slab-on-Grade Placement Size
American Society of Concrete Contractors (ASCC)
ACI 302 has stated since 1980 that a limited placement size concept has not achieved any better shrinkage results, is more expensive, and adds time to the schedule.
May 13, 2013
Construction schedules and contractor economics typically require concrete placements of 10,000 to 20,000 square feet or from 30,000 to 50,000 square feet when a Laser Screed is used. This figure shows a 300,000 square foot pour that was completed within 24 hours in a single concrete placement.
Concrete Equipment & Products
Golden Trowel Awards Recognize the World’s Flattest Floors
Golden Trowel winning concrete floor projects are determined by measurements based on the F-Number system.
May 13, 2013
The Superflat floors at the Emmi Roth Cheese Factory measured an FF 171/FL 95. Floor flatness and levelness was necessary for the automated cheese-aging robot that will move up and down the aisles.
Concrete Equipment & Products
Phoenix Curb Machine with Topcon System Installs Challenging Parking Lot Curb
Midsize curb machine and automated grade control allow contractor to tackle a tough curb project featuring deep placement, tight radii
March 11, 2013
The corner curbwork was done quickly and with less formwork than would have been possible with a large curb machine.
Repair & Rehabilitation Products
Repairing and Leveling a 20-Year-Old Concrete Subfloor
Concrete contractor only had two days to repair and level a severely cracked, 4,000-square-foot concrete subfloor
February 18, 2013
Covalt Floor Leveling used a polymer-fortified, portland cement-based self-leveling underlayment capable of being poured from feather edge to any thickness in a single pour for this repair job.
Concrete
The Limitations of F-Number Specifications
American Society of Concrete Contractors (ASCC)
Contractors need to be cognizant of certain situations that make it difficult to achieve routine FF and FL requirements and know how to get those specifications changed to more reasonable requirements.
January 16, 2013
The penetrations required in this depressed area in an elevated floor slab make it difficult to use 10-foot straightedges and riding power trowels. Specifiers should consider these multiple obstructions to finishing operations when determining F-number values. In this case, the specifier required F-numbers in the small depressed floated area that was to receive ceramic tile for bathrooms.
Screeds
Q&A with the Inventor of the Somero Laser Screed
Somero Enterprises
The Somero Laser Screed revolutionized the concrete industry by increasing concrete floor quality and taking some of the physical burden off concrete workers.
January 16, 2013
The first Somero Laser Screed, serial number 001.
Concrete
Ahead of the Curve
The New Hampshire concrete flooring company, specializing in slabs on grade, superflat floors, and more, builds strong relationships with its customers to deliver quality concrete projects.
January 16, 2013
The Somero Laser Screed is an integral part of S&S Concrete Floors, increasing production and quality on the company’s industrial and commercial warehouse projects.
Concrete
Keeping Concrete Cool During Massive Arizona Foundation Pour
Sundt Construction used 380 truckloads of concrete during the first of two foundation slab pours for a new Arizona courthouse
September 3, 2012
Sundt had to pour the concrete slabs at night because of lower temperatures and less traffic impacts.
Polishing Materials & Equipment
Creating an Outdoor Polished Concrete Carpet
The WerkMaster COLOSSOS helps with grinding and polishing of over 23,000 square feet of concrete for the Comedy Carpet in England
August 6, 2012
The Comedy Carpet was over 23,680 square feet of outdoor concrete with over 160,000 individually cut granite letters embedded in the concrete.
Concrete Pavers
Stringless Controls Speed Airport Project
A Texas contractor uses a Guntert & Zimmerman S850 slipform paver with a stringless control package to help pave 298,000 square yards of concrete at a Dallas airport renovation project.
July 23, 2012
MCM used a a four-track S850 Guntert & Zimmerman slipform paver fitted with a Leica Geosystems stringless control package to place 298,000 square yards of concrete at the Dallas airport renovation project.
Seal Coating
Diamond Grinding Improves Concrete Track at Bristol Motor Speedway
Concrete Pavement Restoration (CPR) through diamond grinding used to reduce the degree of banking in the upper track groove.
July 16, 2012
Diamond grinding equipment in action on Concrete Pavement Restoration (CPR) work at Bristol Motor Speedway.
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