|
Testing self-consolidating concrete
 Forney has been working with department of
transportation leaders in the United States to develop equipment for
testing self-consolidating concrete. The Forney J-Ring Test Set (above)
tests spread and restricted flow around rebar and other reinforcing
structures. The set can be used in the laboratory to compare the passing
ability of different mixtures or in the field for quality control
testing. It can also be used at the mix design development stage or in
production as a quality control method.
The Forney Column Segregation Test Set
determines the degree of potential segregation of coarse aggregate in
SCC mixtures. The set supplies everything necessary to conduct the test
— three cylindrical sections, clamps, collector plate, screen tray,
straightedge, and digital scale.
Click 62 on
Reader Inquiry card
High-capacity vacuum
 Madvac’s new high-capacity LX300 vacuum
litter-collection vehicle offers 10 times the litter capacity of the
Madvac 61. The unit fits on a pickup truck or tow-behind trailer and
vacuums 5 cubic yards of debris into a 3-cubic yard hopper with a
50-foot-long hose. The vacuum picks up heavy-duty litter such as cans,
bottles, newspapers, plastic, cigarette filters, and paper bags from
construction sites, streets, highways, and more.
Click 64 on
Reader Inquiry card
Block retaining wall
 ReCon Wall Systems’ new large block retaining
wall products include a 3-foot-wide block, a 2-foot-wide plinth block, a
cap block, and a step block, which complement the 4-foot- and
2-foot-wide blocks they currently offer.
The plinth block protrudes 12
inches from the face of the wall; the cap block is an alternative to the
top block. The blocks are made of wet-cast, air-entrained concrete with
a minimum PSI of 3,000 for durability, and feature an interlocking
system for easy installation.
Click 67 on
Reader Inquiry card
Low-profile tailgate spreader
 The Western Model 500 low-profile tailgate
spreader fits compact pickups and SUV’s with a Class III trailer hitch.
Features include a 5-cubic-foot-capacity poly hopper (up to 225 pounds);
choice of on/off switch or variable speed control; poly spinner; and an
optional adjustable deflector.
Click 68 on
Reader Inquiry card
Rotary ditcher
 The Model RD15 Rotary Trailer Arm Ditcher from
U.S. Ditcher is an extra-heavy-duty PTO-powered, trailer-type unit
designed for highway ditch construction and cleaning operations. It uses
a single rotating drum-type cutter head to remove and discharge
materials from the ditch. The unit consists of a trailer, extension arm,
ditcher head, hydraulic components, and power transmission system. The
ditcher head is capable of cutting a trapezoidal ditch with 45-degree
sides.
Click 65 on
Reader Inquiry card
Cement sealant
W.R. Meadows’ new Hi-Spec polymeric hot-applied
sealant for portland cement is a single-component, joint sealing
compound. Formulated with a blend of 100% virgin polymer, asphalt
plasticizers, and inert reinforcing fillers, it produces a hot-pour
joint sealant with excellent bonding properties and high resiliency,
ductility, and resistance to degradation from weathering. It will not
become brittle at low temperatures and will not flow or migrate from the
joint at temperatures up to 140 degrees F.
Hi-Spec is recommended for large-scale sealing
of joints and cracks in portland cement and asphalt concrete pavements
because of its excellent cost efficiency, long sealant life, and high
return on investment. The sealant is available in 50-pound containers
and 55-pound cartons.
Click 61on
Reader Inquiry card
Tree saw
The powerful Marshall Tree Saw enables the
operator to cut, push, pile, and stack trees quickly, safety, and
efficiently. Cutting at or below ground level, the saw can cut up to 400
full-grown trees per hour. The saw has the ability to cut any tree 2
inches in diameter or greater; dirt and most rocks won’t compromise the
saw’s performance; the saw can cut right to left or left to right; there
are no stumps left to grind; and an A-frame bar keeps trees and brush
away from the operator.
Click 72 on
Reader Inquiry card
Spraying system
The Intelli-Spray system of remote-control
retractable hose reel sprayers uses high-pressure, low-volume spraying
technology to minimize chemical usage and allow for precision
application. The sprayers are available in dual- or single-reel units
with an independent radio-control retraction system.
Two 12-volt self-coiling hose reels are also
available and can be easily attached to existing spray equipment in
different configurations. The remote-control hose reels rewind at the
press of a button.
A rugged Turbo 400 spray gun with a die cast
aluminum handle and steel lever has interchangeable ceramic-tip nozzles
in sizes from 1 to 5.5 millimeters.
Click 71 on
Reader Inquiry card
Quick-change
The new Quick-Change system from Information
Display Company is designed to enable traffic engineers and others to
move SpeedCheck driver feedback signs between several locations. The
Quick Change Brackets, made of durable stainless-steel plate, allow
users to simply unlock the security padlock, lift the display off the
brackets, and move it to another location.
Click 70 on
Reader Inquiry card
Electronic measuring wheels
The new SpeedMeter electronic measuring wheel
from C.H. Hanson is available in 4- and 13-inch wheel sizes. Both models
feature a large LCD display with a selectable on/off backlight, an
electronic brake that holds the measurement until reset, measurement
conversion button, and a telescoping handle. The units can measure up to
10,000 feet/inches, 10,000 yards/tenths, or 10,000 meters/ centimeters.
The 13-inch model (above) features a pistol
grip, a collapsible kickstand, and weighs 2.5 pounds, making it ideal
for asphalt, concrete, or paving contractors.
Click 66 on
Reader Inquiry card
Self-leveling catch basin
The Zirga self-leveling catch basin operates
with a frame that is entirely supported by the foundation of the street.
The conventional concrete structure is replaced by a standard
high-density polyethylene HDPE one-piece pipe designed to prevent water
and granular infiltration. The smooth external wall eliminates the
possibility of a bond developing between the pipe and the frozen soil.
The system allows the frame to slip along the external wall of the pipe,
allowing the frame to move down with the settling of the soil or up as
the soil heaves during the winter. Like the pavement, the frame floats
on the foundation of the street.
Click 63 on
Reader Inquiry card
Reprinted from Better Roads Magazine
January 2006 |
