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MICROSTRUCTURE-BASED KINETICS MODEL

MICROSTRUCTURE-BASED KINETICS MODELA November 2013 CSHub research profile letter, “Early hydration: A local business,” charts calorimetry (heat measurement) curves from tricalcium silicate paste experiments—with specimens of three particle size distributions (PSD)—to support a proposed model of microstructure-based kinetics. It suggests a “reaction zone” extending a few micrometers in from the cement particle surface, and can reconcile longtime observations on PSD and water/cement ratio.

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Lehigh Valley venue artfully balances basic building materials

PHOTOS: Barry Halkin Photography for Spillman Farmer ArchitectsCombining a restored concrete slab and existing timber construction, with new steel and clay masonry, the $1.7-million, 7,000-sq.-ft. Arts Plaza is a raw, open-air space for the arts at Lafayette College in Easton, Pa. The project transformed a former auto-repair facility into a dynamic outdoor teaching space that responds to its natural environment and built context. Designed as an outdoor black box theater, the plaza hosts a wide variety of planned and spontaneous artistic endeavors, including performance art, visual art exhibits, and small group musical performances.

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CERTIFICATION SPECIALIST OFFERS TARGET, TWO-TIER EPD PROGRAM

A leading third-party certifier for the green building industry, SCS Global Services has enhanced its Environmental Product Declaration (EPD) and Health Product Declaration (HPD) support program. The enhancements are designed to more effectively fulfill what SCS contends is the promise of transparency, accuracy, scientific credibility, and comparability offered by these product declaration tools, while remaining flexible and responsive to the needs of individual companies.

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Health Product Declaration group eyes standardization

Sustainable design education services provider GreenCE, Inc. has partnered with the non-profit Health Product Declaration Collaborative to develop third-party verification and quality assurance consulting protocols for the Health Product Declaration (HPD), an open-standard format for reporting product content and associated health information for building products and materials.

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BASF DEBUTS CONCRETE MIXTURE EPD DEVELOPMENT SERVICE

BASF Construction Chemicals’ Admixture Systems business haslaunched a third-party, critically reviewed Environmental ProductDeclaration Manager tool for concrete, enabling preparation ofcustomer-specific EPDs to help producers communicate mixtures’environmental performance and attributes.

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