EDITORIAL COMMENT

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    Gambling Wisely

    From a contractor's viewpoint, self-consolidating concrete sounds like a panacea—a solution for many of the problems typically encountered on a jobsite. With no vibration, it can fill your forms to produce perfect, smooth surfaces. For flat-work, it can flow without segregation for 50 or 100 feet...

     

NEWS

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    News & Events

    News and events from the world of concrete construction.

     

FEATURES

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ERLIN & HIME ON CONCRETE

  • A Closure

    William Hime and Bernie Erlin's last monthly column for Concrete Construction.

     

DECORATIVE CONCRETE

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    Decorative Concrete Products

    Product spotlights on Tahoe Lighting, Trojan Color Sealer, Ardex SD-M and MasterPiece Granitech.

     
  • Decorative Problem Clinic

    I am patching and repairing some street curbs. The quick-mix products tend to be dark gray, which does not match the lighter sandy color of my curbs and sidewalks. The new concrete highways tend to be almost white. What do they add to get an almost white color?

     
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    What Causes Efflorescence and How do You Remove it?

    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.

     

CONCRETE BASICS

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    Setting String Lines for Concrete Paving Work

    Constructing pavement that provides a smooth ride involves many factors, but the quest begins with setting string lines to guide both trimmers and paving equipment. Contracts for road pavement projects frequently include incentives/disincentives clauses for achieving smoothness within defined...

     
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    Concrete Pavement Construction Basics

    Today's concrete pavements are being built smoother than ever before, providing an excellent riding surface while retaining good surface texture and skid resistance. And the advent of stringless paving and stringless trimming are making construction easier, thanks to laser or optical guidance...

     

PRODUCTS SOLVING PROBLEMS

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    Waterproofing a Building Inside a Building

    Moisture is no stranger to the South. And as in many cities with humid climates, building owners in Baton Rouge, with its large-scale plans to improve the downtown business district, are taking a hard look at the need for quality waterproofing.

     

PROBLEM CLINIC

  • High Volume Fly Ash

    I have heard about the greater influence temperature has on strength development with high volume fly ash concrete, but I can find little in the way of quantifiable data. Is there a greater sensitivity to changes in ambient conditions with HVFA? And is the relationship between test specimens and...

     
  • Too Many Popouts

    Are you aware of a concrete pavement “serviceability index” that deals specifically with the acceptable levels of popouts, particularly in residential or commercial flatwork. ASTM D 5340 “Airport Pavement Condition Index Surveys” refers to in excess of three popouts per square yard but states that...

     

CONTRACTOR TO WATCH

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    The Fricks Co.

    We work all over North America and in the Caribbean, but we have just one home office in Ft. Worth, and we never hire any local people.

     

Other Articles

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    Perfect for Pervious

    The Bunyan Striker features a hydraulically powered spinning tube that cuts down the surface grade quickly.

     
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    Mini Roller Screed

    Roller screeds are like having a screed and paver rake rolled into one.

     
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    Low Hand/Arm Vibration Increases Safety

    The Screedemon reduces wet screed hand/arm vibration by 50% to 90%, reducing the risks of white finger, carpel tunnel syndrome, and chronic arthritis.

     
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    Strike off Slabs on Large Jobs

    The WSH series vibratory truss screed, which spans up to 65 feet, resists rough handling and allows operators to strike off slabs up to 11 inches deep.

     
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    When Larger Screeds Aren't Needed

    This wet screed line is perfect for contractors looking for a fast, economical way to strike off concrete without investing in a larger screed.

     
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    Uniform Concrete Spread

    Expandable to 60 feet, the AS60 gas-powered aluminum screed features the Curl Edge runner, which eliminates concrete rollover and yields a more uniform concrete spread.

     
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    Magnesium Screeds

    Built for strength and rigidity, these lightweight magnesium screeds are available in various lengths and sizes—from 6 feet to 24 feet.

     
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    Complete Family of Truss Screeds

    The Speed Screed vibratory strike-off machines feature reversible aluminum finishing tubes for all types of concrete paving and finishing applications.

     
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    Roller Screed for Any Size Job

    The Spin Screed consists of an aluminum pipe, up to 22 feet in length, that rolls concrete in front of the screed, cutting off high spots and filling in low spots.

     
  • Screed for Odd-Sized Slabs

    The STDXXX screed is perfect for doing small to intermediate size slabs, including irregular shapes and V-shaped waterways.

     
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    Power Screed Saves Time

    The VS400 and VS800 power screeds are perfect for rough finished floors. The tools strike off and consolidate concrete surfaces quickly, efficiently, and inexpensively.

     
  • Versatile Power Screed

    The Vibra Strike II is a versatile power screed with a four-stroke engine that delivers consistent performance.

     
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    GPS for Excavating

    The Logic7D Excavate system boosts the productivity of excavators, eliminates the need for survey stakes, and allows users to better control buckets.