Testing Guide for Pumice Pozzolan

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Some testing guidelines for developing concrete mix designs that incorporate natural pumice pozzolan to significantly densify and strengthen concrete.

As the U.S. Green Building Council’s Leadership in Energy and Environmental Design (LEED) certification program grows and evolves, so too does the need to understand the fit of a wide range of effective materials and processes to meet LEED certification requirements. As product use alone does not provide LEED points, the information in this just-released white paper focuses on identifying the LEED categories and options where pumice and pumice-enhanced products from Hess Pumice can be valuable contributors to the goal of LEED certification.

Graph—Geologic Effectiveness of Grouts for Soil Stabilization

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Key Excerpts from Research Study Done on a Unique Ultrafine Cementitious Grout

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Pumice Pozzolan Data Sheet

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Research Summary: How Pumice Pozzolan Improves Concrete Strength and Durability

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A landmark research study done by the University of Utah details how pumice pozzolans improve concrete strength and durability by mitigating or eliminating the problems that plague standard concrete. Adding natural pumice pozzolan to the concrete mix design ignites a pozzolanic reaction in the curing concrete that defeats deleterious effects like heat of hydration cracking, sulfate and chloride attacks, freeze-thaw spalling, alkali silica reaction (ASR), and efflorescence. Long-term compressive strength is increased anywhere from 10 to 40 percent.

Ultrafine Pozzolanic Cementitious Grout

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US Grout manufactures Ultrafine and Microfine Cementitious Grouts. Made from Portland cement, pumice, and super-plasticizers, US Grouts are super-charged with natural pumice pozzolan, effectively overcoming the deleterious effects inherent in standard cementitious grouts. US Grout Ultrafine, with an average particle size of 3 microns, will effectively penetrate and seal micro fractures and completely grout dense silty soils. These are truly superior cementitious grouts that have effective application for sealing microfractures in rock, “squeeze” cementing in the petroleum industry, repairing concrete structures, improving the bearing capacity of weak soils, and limiting the migration of contaminants in environmental remediation.

Testing Guide for Pumice Pozzolan

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