June 2004 Table of Contents

Features The Great Stupa of Dharmakaya

Built "to last 1000 years," the Great Stupa at the Shambhala Mountain Center near Ft. Collins in the Colorado Rockies was built with the finest, most durable materials available. Silica fume, fly ash, a high-range water reducer, and a retarder were added to the high-performance concrete used in the 100-foot-tall structure. Impermeability was achieved by a combination of low water-cement ratio and pozzolanic additives that reduced voids in the concrete. A combination of superplasticizer and retarder created a highly workable concrete. Read more

Features Liquid Stone: New Architecture in Concrete

Some of the world’s most beautiful and innovative works of contemporary architecture owe their unique character to one of the world’s most common building materials—concrete. Read more

Features Hot Weather Can Be Hard

Successful hot weather concreting requires careful planning and close coordination among all members of the construction team—design engineer, testing agency, concrete producer, and contractor. Advance preparation and ongoing interaction can simplify needed hot weather adjustments and result in higher quality and durability. Read more

Features Concrete that Drains

Most people consider concrete to be impervious—after all, it’s used to make swimming pools and kitchen sinks. And most concrete is, indeed, nearly watertight. But a new kind of concrete that allows water to flow through virtually unimpeded is gaining popularity. Pervious concrete is being used mostly in the construction of parking lots, but also for sidewalks, bike paths, playgrounds, and erosion control. Pervious concrete pavement is not, however, suitable for areas subject to high traffic volumes or speeds. Read more

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