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Quikrete extends 3D printing reach in housing unit demonstration

Source: Quikrete Companies, Atlanta

Quikrete and California-based Contour Crafting Corp. have entered into a collaboration to develop proprietary concrete used in the automated construction of residential, commercial, industrial and government structures using the latter’s technology. Following comprehensive testing at an independent accredited lab at the University of Southern California to confirm ICC-ES AC509 compliance—a building code spearheaded by CC Corp.—the 3D printing process will be used to construct four low-income housing units as part of a demonstration project sponsored by the Los Angeles County Development Authority.

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Northeast foundations catastrophe spawns USGS pyrrhotite reference

Sources: U.S. Geological Survey; CP staff 

The U.S. Geological Survey has developed the first map of rock deposits exhibiting the potential to contain or form pyrrhotite, whose presence in otherwise ASTM C33 aggregate can prove extraordinarily deleterious in concrete. The map is part of a new fact sheet, "Pyrrhotite Distribution in the Conterminous United States," whose publication abides a Congressional directive addressing widespread residential foundation failure cases in Connecticut and Massachusetts. 

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Charah lands 2M-ton ash processing contract in Southeast

Sources: Charah Solutions Inc., Louisville, Ky.; CP staff

A Southeastern utility has tapped Charah Solutions for a Closure by Removal impoundment project encompassing upward of 100 acres of ash deposits at a coal-fired power station that was retired in 2015. Work will include installation of environmental controls plus rail infrastructure improvements and extension, along with loadout area construction. Over a multi-year contract, Charah anticipates processing of 2 million-plus tons of impounded material for beneficial use as concrete-grade fly ash, while preparing the former pond acreage to be restored as usable property. 

Read more: Charah lands 2M-ton ash processing contract in Southeast

ASTM C01/09 summer meetings canceled; alternatives pursued

Source: ASTM International, West Conshohocken, Pa.

ASTM International staff will confer with C01 Committee on Cement and C09 Committee on Concrete and Concrete Aggregates leadership regarding alternatives to meetings scheduled June 28-July 2 in Boston, all of which have been canceled. ASTM announced the change in response to continued review of information and recommendations from the U.S. Centers for Disease Control and Prevention, the World Health Organization, and other governmental bodies; input from ASTM International members whose organizations are increasingly concerned with travel; and, specific information on the projected city restrictions, with input from the hotels. Looking forward, ASTM will rely on these and other relevant criteria and input points to assess the status of future standards development meetings.

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ASTM aligns with ICC to promote resilient construction practice

Sources: ASTM International, West Conshohocken, Pa.; CP staff

An early-May webinar series timed with the International Code Council's Building Safety Month, coupled with ICC and Alliance for National Community Resilience partnerships, highlight a longstanding ASTM International commitment to developing standards for safe and resilient construction.

Read more: ASTM aligns with ICC to promote resilient construction practice