Pumice-Crete ® is a low density, lightweight, low-rise structural concrete using 3/8 pumice aggregate, Portland cement, and water. The honeycomb-like walls are formed and poured at a typical thickness of 18-24 inches, with no additional structural reinforcement [ 03 ] …

Compared to standard concrete, pumice concrete offers roughly a one-third reduction in weight. Proportioning, mixing and placing are done in a similar manner to that of standard concrete.

Pumice-Crete ® is an innovative construction concept (and product formulation) that combines the aggregate-binding properties of Portland cement with the lightweight foamed-stone characteristics of pumice aggregate to create a unique structural wall material with impressive insulative properties. The Pumice-Crete mixture is cast into place ...

Pumice pozzolans supercharge standard concretes in terms of strength, density, ASR mitigation, sulfate attacks, and freeze-thaw damage, significantly improving the effective lifespan of the concrete structure.

the history of Roman use of fine-ground pumice as a vital component of roman concrete and how natural pumice pozzolans can greatly improve modern Portland cement.

precast concrete products made with lightweight pumice aggregate are more efficient to handle and less costly to transport plus providing the other advantages inherent in pumice-aggregate concrete.

pumice has additional applications in concrete applications, including formulating pozzolanic hydrated lime (PHL) plasters, ultrafine cementitious grouts, lightweight stuccos and bonding mortars, GFRC panels.

ALKALI-SILICA REACTION (ASR) fuels a relentless, slow-motion explosion within cured concrete that shatters both the concrete and the aggregate, significantly shortening the engineered lifespan of the infected structure.

PUMICE POZZOLAN (HESS POZZ) COST VALUE: priced at or below the cost of Portland cement; e˜ective against ASR at 20% of cement replacement, no matter the reactivity level of aggregate; sustainable source. EASE OF USE/PLACEMENT: use of pumice as SCM increases water requirements; easily brought back into desired W/C ranges with water reducer admixture.

RESULTS: The pumice pozzolan concrete qualifies for use in a Class 3 severe sulfate exposure environment at both 15% and 25% replacement levels. SULFATE EXPOSURE QUALIFICATION AND MORTAR BAR EXPANSION