What is the ratio of the building material that is named for the Latin word "crushed" and sand used to stabilize buildings?
Sandcrete Sandcrete is a yellow-white building material made from a binder (typically Portland cement), sand in a ratio of circa 1:8, and water. Sometimes other ingredients may be added to reduce the amount of expensive Portland cement such as pozzolanas and rice husk ash. Sandcrete is similar but weaker than mortar, for which the ratio is circa 1:5. "Soil cement" and "landcrete" are similar materials but use other types of soil and hydraform blocks which are compressed, stabilized, earth blocks.
Alkali–aggregate reaction Alkali–aggregate reaction is a term mainly referring to a reaction which occurs over time in concrete between the highly alkaline cement paste and non-crystalline silicon dioxide, which is found in many common aggregates. This reaction can cause expansion of the altered aggregate, leading to spalling and loss of strength of the concrete.