What is the failure mechanism Moxie Shield is designed to prevent?
Concrete and masonry do not fail from age — they fail from moisture and vapour infiltration. Water penetrates substrate pores and capillary pathways, initiating freeze-thaw cycling, rebar corrosion, alkali-aggregate reaction, and sulfate attack. This deterioration occurs invisibly at the molecular level long before surface damage is detectable. By the time spalling, cracking, or efflorescence is visible, internal degradation is already significant. Moxie Shield addresses the root cause: the open pore and capillary structure that allows moisture ingress in the first place.
How does reactive silicate technology work, and how is it different from crystalline or coating-based systems?
Moxie Shield products use a reactive silicate chemistry that is applied to the substrate surface and works within the substrate. The silicates react with free lime and calcium compounds present in concrete and masonry, forming insoluble compounds that permanently block capillary pathways and pore structures. The result is a densified, hydrophobic substrate — not a surface film. Crystalline systems rely on crack-bridging crystal growth triggered by moisture; coatings create a film layer that remains external to the substrate. Moxie Shield protection is integral to the substrate and does not delaminate, crack, or require reapplication.
What ASTM standards are relevant to evaluating Moxie Shield performance?
Relevant standards vary by product and application. For concrete applications, ASTM C494 (chemical admixtures), ASTM C666 (freeze-thaw resistance), and ASTM C1202 (chloride ion penetration) are primary performance benchmarks. For masonry applications, ASTM E514 (water penetration through masonry) and ASTM D3960 (VOC content) are applicable. Moxie’s technical team can provide product-specific test data and documentation aligned to the standards relevant to your project requirements.
What hydrostatic pressure resistance does Moxie Shield achieve for concrete applications?
Moxie Shield 1800 Concrete Waterproofing Admixture is engineered to achieve zero detectable water transmission at up to 200 psi of hydrostatic pressure. This performance level supports specification for structures subject to sustained hydrostatic loading: below-grade walls, water retention structures, tunnels, foundations, and marine infrastructure. Performance documentation is available from Moxie’s technical team.
How does Moxie Shield perform across freeze-thaw cycles?
Moxie Shield-treated concrete exceeds 600 freeze-thaw cycles under ASTM C666 testing conditions. Freeze-thaw degradation is driven by water infiltration into capillary pathways; by eliminating those pathways, Moxie Shield removes the primary mechanism of freeze-thaw damage rather than simply hardening the surface against it.
Can Moxie Shield be specified for negative-side waterproofing applications?
Yes. For applications where positive-side access is not available — below-grade walls, occupied structures, existing infrastructure — negative-side application is a viable specification approach for applicable Moxie Shield products. This is a meaningful performance distinction from membrane systems and most surface coatings, which require positive-side application and substrate preparation that is often impractical in retrofit conditions.
Is Moxie Shield appropriate for water infrastructure, including potable water contact applications?
Yes. Moxie Shield 1800 is zero VOC and formulated for use in aquatically sensitive environments. It is appropriate for water retention structures, reservoirs, pools, aquariums, dams, levees, and marine infrastructure. Compliance documentation for potable water contact applications is available on request from Moxie’s technical team.
Does Moxie Shield affect the structural properties of treated concrete or masonry?
No. Moxie Shield products are protective treatments, not structural interventions. They do not alter compressive strength, flexural performance, or load-bearing characteristics of the substrate. For concrete admixture applications, Moxie Shield 1800 is an ASTM C494 Type S admixture and is compatible with standard mix design parameters without requiring modification to water-cement ratio or aggregate specifications.
What is the expected service life, and does protection require reapplication?
Field performance data across Moxie Shield’s installed base supports service life exceeding 50 years for surface-applied treatments under normal exposure conditions. Because the protection is chemically bonded within the substrate rather than maintained as a surface film, it does not degrade with UV exposure, abrasion, or weathering in the way coatings do. Periodic reapplication is not required under standard conditions.
How does Moxie Shield support a durability-as-sustainability specification position?
Extending the service life of a concrete or masonry structure reduces the embodied carbon and resource consumption associated with premature replacement or rehabilitation. Moxie Shield’s protection strategy directly reduces lifecycle material demand, which supports sustainability frameworks including LEED Materials and Resources credits and total cost of ownership modeling. For engineers preparing lifecycle cost analyses or sustainability documentation, Moxie’s technical team can provide supporting data.
What building types and project categories does Moxie Shield serve?
Moxie Shield has been specified and applied across healthcare, education, hospitality, municipal, institutional, commercial, industrial, and infrastructure projects. The product line covers concrete, masonry block, brick, natural stone, stucco, plaster, and flooring substrates — as well as a concrete waterproofing admixture for new construction. For engineers working across multiple building types, a single product family addresses the full range of substrate protection needs.
What technical resources and project references are available for engineering review?
Technical data sheets, ASTM test documentation, and application guides are available for each product in the Moxie Shield line. Project references — spanning infrastructure, healthcare, education, municipal, industrial, and commercial applications — are available at moxie-intl.com/projects. For project-specific technical consultation, contact Moxie’s engineering support team at sales@moxieshield.com or (916) 251-0825.
