Propex Adds Elemix Additives
Propex Concrete Systems has announced an agreement to sell and support Elemix additives from Monaca, Pa.-based Nova Chemicals Corp. Specially formulated...
Rockwood, Grace renew coloring product distribution alliance
Rockwood Color Pigments & Services Division and W.R. Grace Construction Products have extended their alliance to jointly distribute Rockwood's Chameleon...
Silicon Valley Operator Molds A New Class Of Brick & Pavers
CalStar Products unveiled high fly ash content architectural brick and pavers at the U.S. Green Building Council's 2009 Greenbuild International Conference...
Axim Crafts MRWR For Flowability, SCM Combinations
Catexol Hydrosense, a polycarboxylate-based water reducer, provides what Axim Italcementi Group contends is excellent flowability during placement without...
Crouch at Helm of Realigned Propex
Thirty-year industry veteran Chris Crouch has been named executive vice president of Propex Concrete Systems, a stand-alone business unit of Propex Operating...
ACAA addresses EPA panic on fly ash designation, handling
Citing a new administration and the December 2008 spill of 5.4 million cu. yd. of fly ash from a Tennessee Valley Authority impoundment as reasons for...
New ASTM Standard Defines Rapid Hardening Hydraulic Cements
The recently approved ASTM C1600/C1600M - Specification for Rapid Hardening Hydraulic Cement covers materials used in applications where reduced cementitious...
The Impact of Workability Retention
Contractors want concrete to be as workable as possible to facilitate placement and consolidation without compromising performance in the hardened state....
Polymer drives admixture's flexible slump retention, workability control
Exclusive polymer technology with cement particle-dispersing capabilities has yielded BASF Admixture Systems' RheoTEC Z-60, the first in a new concrete...
Global Cement Companies Slash CO2 Emissions
Although cement production by companies participating in a 16-year study increased 53 percent from 1990 to 2006, net carbon dioxide emissions increased...
Sustainability Visionary Jean-Claude Roumain
One of the driving forces in the push to turn rice hull ash into a viable commercial product is one-time Holcim (US) Inc. corporate product manager Jean-Claude...
Silicate-rich rice hull ash as commercial admixture
With an eye toward converting landfill-bound agricultural waste into concrete-grade pozzolan, environmental technology company ChK Group completed piloting high-temperature rice hull processing to yield a fine, high-silicate (>90 percent) ash with performance properties similar to silica fume...
SILICA FUME ALTERNATIVE
Cemstone positions high-reactivity metakaolin (HRM) in the supplementary cementitious material mainstream. Under a new partnership with Calgary-based Whitemud Resources, Inc., Cemstone Products Co., Mendota Heights, Minn., has begun using WhitemudMK branded HRM in concrete mix designs for heavy/civil work, including bridges, structural slabs and parking garages....
Engineered limestone tailor milled to SCC mix designs
Pittsburgh-based Carmeuse Lime & Stone first announced the availability of Premiacal, an engineered limestone with fineness characteristics especially...
Century-old Master Builders fulfills promise of its brand
In the year that witnessed such landmark events as Henry Ford's Model T debut, explorers reaching the North Pole, and Panama's independence from Colombia,...
NRMCA Joins EPA, Power Groups in Fly Ash Promotion
In an industry-wide effort to increase the use of concrete-grade fly ash, the National Ready Mixed Concrete Association has joined the Environmental Protection...
Elemix polymeric spheres reshape concrete matrix
In 2008, representatives from tilt-up construction contractors Hi-Tech Tilt of Laredo, Texas, had a fateful meeting with Monaca, Pa.-based Syntheon at...
Carmeuse Mills SCC-Grade Limestone
Pittsburgh-based Carmeuse Lime & Stone has announced Premiacal, a high (> 75 percent) calcium carbonate, engineered limestone with fineness characteristics especially suited to self consolidating concrete mixes. ...
Federal Engineers Link Viscosity Agents, Concrete Service Life
Engineers from the National Institute of Standards and Technology in Gaithersburg, Md., report a nano-sized additive whose potential to slow chloride...
Toronto's Innocon stages Record SCC foundation pour
Toronto-based Innocon Ready Mix Concrete has set a new North American volume record for a continuous self consolidating mix placement. Dispatching 510...
