The use of lightweight concrete was used in ancient Rome over 2000 years ago. The construction of the Pantheon, the Coliseum, the Immense Valts of the public bath and many other structures still standing today.
How does the pumice block differ from the standard concrete block?
The pumice block is similar, except that the sand and gravel is replaced with lightweight pumice course aggregate. This blend of aggregate is sometimes referred to as a semi-lightweight block when the total aggregate consists of pumice and cement, then it is referred to as lightweight block and is one half the weight of standard block.
Tufflite is a strong, durable, porous glass pumice aggregate of volcanic origin, an ideal natural material for use it structural lightweight concrete. With the continuing increase in energy cost, pumice is a natural insulator both in heat or cooling and sound. With the continuing increase in energy cost, the use of natural aggregate marks a return to the economic principles as associated with the use of lightweight concrete.
Stone veneer that is made from pumice is lightweight and can be installed on almost any surface. Stone veneer is available in many different colors, textures, and sizes to meet the needs of many architectural applications. The product is virtually maintenance free, and its appearance is enhancing over time from the elements. Stone veneer offers the durability and strength of natural stone and architectural applications at a much lower cost.
  
Proven Solution
For almost 50 years, Pumice Lightweight Aggregate has been effectively used to replace heavy weight concrete products with lightweight concretes. Lightweight pumice aggregate can reduce the weight of precast by up to one-half.
Where an "R" value is required, Pumice provides significantly greater thermal resistance when compared to regular weight concrete. This inert, durable, stable, free-draining and environmentally "friendly" lightweight aggregate is extremely easy to handle and provides economical long term solutions for precast challenges.
The Material
Pumice Lightweight Aggregate has a long track record of quality and performance. Since its development in the early nineteen hundreds, Pumice structural lightweight concrete has been used extensively in high-rise buildings, commercial buildings, hospitals, schools, government housing and major shopping centers. Pumice aggregate is also used in precast, pre-stressed concrete, masonry and geo-technical applications. The quality of Lightweight Aggregate results from a carefully controlled screening operation. The result is a high-quality, lightweight aggregate that is inert, durable, tough, stable, highly insulative, ready to meet stringent specifications for most structural and non-structural lightweight concrete projects
  
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