December 1999 Table of Contents

Features 1999 Pavement Awards

Repair, overlay, replace, and reconstruct: These have become the operative terms for today's paving contractor. Not only are fewer concrete pavements being built on new alignments, the traveling public is demanding fewer construction-related delays. Read more

Features Planning Leads to High-Performance Floor

When Rockwell Automation Corp., Milwaukee, Wis., set out to build a new conveyor-drive manufacturing facility in Clio, S.C., one of the top demands was a high-performance floor slab with excellent abrasion resistance and minimal cracking and curling. Read more

Features Square Dowels Control Slab Curling

Curling at floor joints is a common problem. However, field observations and experimental studies have shown that substantial reductions in curling can be achieved by using proprietary square steel dowels fitted with a clip-on device that puts the sides of the dowel in contact with a compressible material. Read more

Features Planning a Productive Jobsite Layout

One of the most important but often overlooked organizational tasks of a construction supervisor is planning a layout for the project site. Many decisions must be made such as where to place office trailers, where to store onsite materials, and where to keep equipment when not in use. Unfortunately, supervisors often take a haphazard approach to the layout task, not realizing the effects their plans can have on productivity. Read more

Features A Contractor's Guide to Cut-Off Saws

Indispensable tools on any concrete repair jobsite, cut-off saws can be used to make quick, shallow cuts through concrete and steel. Common applications include cutting openings in walls, square cutting patch perimeters, and cutting rebar and post-tensioning tendons. Read more

Features Taking Control

When it comes to construction, he who has the plan has the control. Obviously, for any project--especially a large one--contractors should produce detailed plans to identify each phase of a construction project. Read more

Problem Clinic Does Fogging Increase Water-Cement Ratio?

When using a fog spray to prevent plastic shrinkage cracking during a concrete flatwork placement, aren't you taking a chance that the water-cement ratio at the surface will increase, reducing concrete quality? Read more

Problem Clinic Hydrophilic Versus Hydrophobic Polyurethane Grouts

What's the difference between hydrophilic and hydrophobic polyurethane grouts? Whenever I ask anyone, they say that hydrophilic grouts "love water" and hydrophobic grouts "hate water," but this means nothing to me when I'm trying to select a grout for a c Read more

Problem Clinic Effect of High Temperatures on Concrete

I'm a distributor of concrete repair materials that are often used in steel manufacturing plants. Read more

Problem Clinic Slab Curling: Causes and Prevention

We just had our first experience with slab curling. What causes it and what can be done to avoid it? Read more

Close X