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    What To Do With Test Results?

    In his third installment in this testing series, Hover discusses what to do with properly sampled concrete test results.

     
  • BubbleDeck precast panels are being lifted into position. Once in position, workers place shores under the panels and with little additional work, a deck is ready for concrete placement.

    On the Bubble

    Placing concrete around plastic voids increases efficiency and reduces costs.

     
  • Knowing both the total hole count and logistical factors of a job will help one decide if a larger, multigang slab-rider drill is the most efficient choice.

    Drill It Down

    Pneumatic dowel drills come in a variety of models to meet the challenges of any project. Find out what to consider when making your next purchase.

     
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    Productivity Equals Profit

    How to increase productivity in the office and on the jobsite.

     
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    Footprints in the Sands of Time

    Bernie Erlin is the father of concrete petrography who has a love for the mysteries of concrete.

     
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    Two Percent Cement

    Recycled aggregate and supplemental cementitious materials are combined in this award-winning concrete mix with only 2% portland cement.

     
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    15% by 2015

    SCC is increasing in use and this article provides some tips for achieving success.

     
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    Moisture Mitigation in Slabs

    Learn how to reduce moisture in slabs.

     
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    Flatness and Levelness + Durability = Longevity

    Concrete floor quality is not guaranteed by high F-numbers, but rather creating a long-lasting durable floor.

     
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    Cold Weather Concreting 101

    The new ACI 306 guide covers the basics and a lot more.

     
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    Pushing the Technology Envelope

    Despite all of the hype, contractors aren't adopting building information modeling as quickly as you'd think. Here's why they aren't and what BIM holds for the future of the industry.

     

GREENSITE PROJECT OF THE YEAR

Winners

  • Thomas Jefferson School of Law

    Thomas Jefferson School of Law in downtown San Diego is an eight-story classroom building, with ground-level retail space, and three levels of underground parking.

     
  • TreePeople Center

    TreePeople is a nonprofit organization that addresses urban issues, such as water and energy conservation, flood prevention, and stormwater pollution.

     
  • Ohio Street CSO Abatement Project

    The Ohio Street CSO Abatement Pilot Project was a partnership effort to beautify a significant transportation corridor into Indiana’s capital.

     
  • Flamm Home

    The Flamm project took the site, architecture, and detailing components of a building to their creative limits.

     
  • The Refinery

    The Refinery is a 45,000-square-foot, two-story building on the Saddleback Church campus.

     
  • Toho Water Authority Administrative Headquarters

    As the first LEED Gold-certified project in Kissimmee, this 54,000-square-foot facility used concrete tilt-up wall construction to reduced the project’s environmental impact.

     
  • Rosa Parks Apartments

    As an affordable housing development, the Rosa Parks Apartments needed to be economical to build and sustainable in long-term operation and maintenance.

     
  • Taltree Railway Garden

    What was once a field of prairie grasses has been turned into an ornate model railway garden that uses stormwater captured with permeable concrete pavement.

     

SPECIAL SECTION

Tools for the Concrete Pro

  • Vibrating handheld screeds, the lightest and least expensive mechanized screeds, save effort and allow the finisher to work standing up.

    Screed Stars

    This indispensable equipment is a must-have for any flatwork contractor. Find out how to choose the best your operation.

     

CONCRETE SURFACES

Editorial

Troubleshooting

  • Poor bonding of the topping to the base course can be a primary reason for spalling. Bond coats can prevent this type of damage.

    Why Use a Bond Coat?

    Although the use of bond coats is usually a matter of preference, a number of industry organizations recommend using them.

     

Product Selection Guide

Showcase

Features

  • The Personal Touch

    Concrete countertops can be customized to customers' wants and needs.

     

World of Concrete

  • Contractors who polish, coat, and repair concrete will have more to do at the 2012 World of Concrete than ever before.

    In the Zone

    Contractors who polish, coat, and repair concrete will have lots to see and do.

     

SLABS ON GRADE

  • A new test method employs a traditional walking-type profiler, which has made it possible for any local lab to test F-min quickly and competently, and at a lower cost.

    F-min Numbers, Part 3

    In his final installment, Allen Face explains the origin of the term superflat in warehouse construction.

     
  • F-min Numbers, Part 2

    In part 2, Face discusses straightedge tolerances, and their inaccuracies.

     

TILT-UP

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    Certified Advantage

    The Tilt-Up Certified Contractor program provides a marketable verification program that assures tilt-up expertise.

     

DECORATIVE CONCRETE

Other Articles

  • The step forms shown here are tiered and cantilevered with texture formliners included in both the cantilever and the inset section.

    Forming Concrete Steps

    Following up from last month's column, Joe Nasvik discusses materials and procedures needed to properly form concrete stairs.

     

JOBSITE PRODUCTS

  • Pump Farther

    The 3-in. swing-tube pump on the X-10 refractory and shotcrete pump yields up to 12 cu. yds./hr.

     
  • Compact Size

    Redesigned for better maneuverability and towing, the SP 750-15 features a more compact package.

     
  • For Long-Distance Pumping

    Heavy-duty, high-pressure BSA 100-D and BSA 120-D trailer pump models are ideal for long-distance pumping.

     
  • Reduces Pressure Drop

    The 15 130 S-Tube pump features 7-in.-diameter cylinders and a 54-in. stroke that are designed to reduce pressure drop created by oversized pumps.

     
  • Small Frame, Big Power

    The C50SS Concrete Pump packs superior performance in a compact frame.

     
  • Simplified Pumping

    The GHP line of concrete pumps are designed to handle small jobs.

     
  • Chrome Exterior

    The multipurpose Pro-Cretor Shotcrete Pump and Mixer features a 10 cu. ft. materials mixer and high-pressure swing-tube pump.

     
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    Precision Poly Blades

    The manufacturer’s poly blades are designed for 30-in. power trowels and similar smaller equipment.

     
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    Compact Size, Powerful Results

    The MQ Whiteman JWN-series 6-ft-class ride-on power trowels have a CVT drive system, which allows the operator to pan float concrete and still deliver a 180 rpm rotor speed for burnishing floors.

     
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    Composite Pan

    Now with steel backing for more rigidity, the Compodisk is a composite pan acoustically matched to the concrete.

     
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    Edge Closer

    The MP 235 Edging Mechanical Drive Riding Trowel’s rotating guard rings allow the operator to edge within 5/16 in. of a wall.

     
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    Electric-Powered Walk-Behind Trowels

    The MQ Whiteman J36E2 electric walk-behind trowel is designed to provide levels of performance previously only available from gasoline-powered trowels.

     
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    No More Buildup

    The F-Series direct-drive concrete trowel features a width of 48 1/2 in. and is powered by Honda engines up to 11 hp.

     
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    User-Friendly Walk-Behind

    These dual power trowels run on 5.5- or 9-hp gas-powered engines that achieve 182 rpm.

     
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    RL-H4C Laser

    With an operating range of nearly half a mile (2620 ft.), the RL-H4C self-leveling rotating laser can be used on most jobs.

     
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    Wireless Communication System

    Version 3 of the VOK-ENG wireless communication system allows users to create up to eight subcommunication channels to address different teams onsite.

     
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    GIS Data Collection

    TerraSync software is a geographic information system (GIS) data collection and asset management tool that includes one-click data capture.

     

PROBLEM CLINIC

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    Use Air-Entrained Concrete

    We placed, colored, and stamped the concrete in the photo two years ago. It looked great after the first winter, but then during the second winter, the surface started breaking down. We specified only 3% entrained air in the concrete because I was told not to use too much air or else the concrete...

     
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    Demolition Options

    From CC’s LinkedIn discussion group comes this question: Does anyone have another option to remove mass concrete foundations without using an excavator and breaker?

     
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    Bulging Joints

    Under resilient floors, what is less likely to telegraph joints after moisture equilibration: semirigid epoxy or polyurea?

     
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    Letting the Cat Out

    Our cat frequently urinated on our basement concrete floor, which now has a strong urine smell. I’m in the process of getting the house ready for sale and have tried everything I can think of to remov

     

Other Articles

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    2012 SPEC MIX BRICKLAYER 500 National Bricklaying Championship Competitors

    The final selection of the 2012 SPEC MIX BRICKLAYER 500 National bricklaying championship competitors has been finalized. There is a record high of 21 bricklayers competing this year.

     
  • From 1970 to 2004, U.S. scrap steel prices varied only by $100 per ton. In 2004, scrap prices rose to unprecedented levels and remain high compared to the historical average.

    The New Reality: Cost Volatility

    Currently the rebar industry is affected by worldwide demand for scrap steel; a phenomemon that will continue to impact concrete construction.

     
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    Smart Concrete, Safety Card, Sensing Skin

    Smart concrete combats urban heat island effect, safety card quiz reinforces safety program, and concrete patches monitor structures.

     
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    Smart Concrete, Safety Card, Sensing Skin

    The Hilti Anchor Selector app will help you choose the best anchor for the job.

     
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    Performance Mixes

    Now more than ever, concrete contractors need to know about new technologies that can make them more competitive.

     
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    Organizational Financing

    The balance sheet presents the financial position of an organization at the end of a specific date.

     
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    pH of Floors

    pH represents the acidity or alkalinity of a fluid—therefore there is no pH without water.

     
  • Working Together

    Learn about concrete floor and tile contractors, a new work zone safety resource, ACI certification programs, and Women in Concrete.

     
  • Ellis Mfg .Co. Inc. Eliis Steel Shore

    Eliis Steel Shore is equipped with roller bearings for easy turning and adjustment.

     
  • Heavy-duty Fiber

    Ferro-Green is a unique macrosynthetic fiber blend used to add toughness and durability to all types of pervious concrete applications.

     
  • Mortar Admixture

    Formulated to provide long-term protection by reducing permeability and absorption, Krystol Mortar Admixture is a dry powder added to the cementitious mortar during mixing.

     
  • ADA Detectable Warnings

    This all liquid product forms ADA truncated domes onsite to fit any size, shape, and substrate.

     
  • Business Software

    Designed to cut costs and save time, the ProContractorMX is equipped with an easy layout pattern, vigorous design, and high scalability.

     
  • Combination Pumps

    PHCC Pro-Series AC pumps and battery backup systems protect against switch and power failures.

     
  • Flooring System

    Reflector Enhancer Flooring Systems create a unique set of colors and patterns that can match any custom design.

     
  • Wall Insulation

    Multiple layers of insulation reduce thermal bridging while saving energy costs and improving comfortability.

     
  • Joint Saver

    SD Joint Saver increases productivity while decreasing vechicle maintenance.

     
  • Concrete Coating

    These water-based, sprayable surface retarders can be applied on concrete after the bleed water is gone.

     
  • Lifting Lugs

    These Weld On Lifting Lugs are made from A36 steel and color-coded for instant identification.

     
  • Protective Eyewear

    Zorge offers a full, unobstructive view through fog- and scratch-resistant lenses.

     
  • Portable Worklight

    Equipped with weatherproof switches and a hinged-style face frame, the Wide Angle Wall-to-Wall Portable Halogen Worklight lights up to 160-degree angles/head.

     
  • Combination Sump Pumps

    The PHCC Pro Series Pumps are a combination of primary and backup sump pump systems.

     
  • Advances in Decorative Concrete Stenciling

    Explore the use of stencils and solvent-based dyes, with a special focus on the technique of color alignment using registration marks.

     
  • How to Efficiently Lay Out and Form Steps and Risers

    Learn how to efficiently build safe concrete stairs; how to lay out and set the formwork for exterior steps, making use of some of the latest technology.

     
  • Testing Concrete Slabs Properly

    Witness live demonstrations of the proper procedures used to test the characteristics of concrete slabs.

     
  • Certifications at WOC 2012

    Various certification training courses with written and performance examinations are offered throughout the week during WOC.

     
  • Discounted 12-Hour WOC Packages

    Purchase any of these Super Pass packages when you register for WOC 2012 and save 25% or more!

     
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    Concrete Construction's How to Zone

    Editorial pages come to life in new World of Concrete educational events!

     
  • Innovative Materials and Products

    Stable entrained air, quick-drying concrete, and the decorative concrete market.

     
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    Preparation Is Key

    The finest house paint on the market won’t last a season if applied over dirt or cracked, peeling paint.

     
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    Proactive Practices

    The construction supervisor is the difference between a successful project and one that isn’t.

     
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    Connecting Footings

    Footing-to-wall connections are a requirement of the International Residential Code (IRC), which requires this connection to be performed with steel pins or a concrete notch.

     
  • The Best in Polishing

    From an airplane hangar to a bathroom floor, and from an art museum to a grocery store, polishing concrete contractors showed their innovation and skills in the first Concrete Surfaces Polished Concrete Awards.

     
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    Innovative Estimating

    Estimating for reinforcing steel placement during competitive times takes project analysis and creative estimating.

     
  • The Big Top

    How-To Zone, Sealing Joints, Sustainability and concrete, and new Pervious Blog are in this month's edition.

     
  • New Pavement Seminar Series

    If you need information on producing, maintaining or repairing concrete pavements, check out the new three-part series at WOC 2012.

     
  • Wacker Neuson to Hold Trowel Challenge Competition at 2012 World of Concrete

    Are you the fastest finisher? You can find out at Wacker Neuson's annual trowel challenge competition.

     
  • Quality in Slabs Luncheon & Forum

    Topics will focus on flatness, levelness, surface durability, joint durability, moisture content, and owner satisfaction and what you can do to achieve a good slab and control the project.

     
  • Masonry Veneer LIVE!

    New to the World of Concrete, Masonry Veneer Live draws together key industry stakeholders, installers, masons, manufacturers and designers to help foster the growth of the masonry industry’s fastest-growing product segment.

     
  • Additional Industry Training Courses

    WOC has a host of recognized industry organizations as education partners to ensure attendees get the most up-to-date training, certifications and information while attending the show.

     
 

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