Abstract
Silicate products along with autoclaved aerated concrete are a healthy and ecological building material. Silicates and AAC are the effect of the reaction of the components from which they are formed under hydrothermal conditions. This process is called autoclaving from the name of the devices in which it runs. The tests have shown the effect of the tested additives on the particular properties of autoclaved lime-sand products and lime-sand-cement products. The addition of chalcedonite powder increased both the bulk density and compressive strength of lime-sand products and lime-sand-cement products. Composition modifications contributed to changing the microstructure of the products. In the samples with the addition of chalcedonite powder, fuller tobermorite crystals developed in comparison with the traditional sample. Additives contributed to changes in pore structure and size.
Highlights
The sand-lime brick, commonly known as silicate, has been produced on a massive scale for nearly 130 years
Silicates have even four times higher density than autoclaved aerated concrete, which translates into compressive strength
The following conclusions can be drawn on the basis of the research: 1. The addition of chalcedonite powder increased both the bulk density and compressive strength of lime-sand products and lime-sand-cement products
Summary
The sand-lime brick, commonly known as silicate, has been produced on a massive scale for nearly 130 years. Lime and water are used for its production. It makes it hard to find a material more natural than silicate. Easy access to raw materials, their naturalness and relatively cheap production process caused that silicates belong to one of the most popular materials used in housing construction. Due to the lack of hazardous substances, like silicate is a material that creates a healthy environment for human life and does not adversely affect the natural environment
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