Category: 7: LIME MATRIAL

The Bureau of Indian Standards (IS: 1624–1974) provides a number of field tests for building lime, which can be easily conducted in the field. They are discussed below. Visual Examination Class C lime is identified by its pure white colour. Hydrochloric Acid Test Hydrochloric acid of 50% strength is added to powdered lime kept in…

Physical and chemical tests are conducted on limestone to determine their suitability. Physical Tests Physical tests are based on the texture, appearance, colour and odour of limestone. Limestone showing amorphous textures are suitable for making lime. Chalk and fat lime deposits are white or whitish-brown or grey in colour. Magnesium limestone is distinguished from its…

Lime easily affects the skin and also is a health hazard if breathed in. The moisture on the body reacts with lime resulting in skin diseases. This may be avoided by coating the skin with oil. Slaking of lime is an exothermic reaction, i.e., it produces a large amount of heat. Necessary precautions should be…

General Classification In general, classification of lime is based on the calcination of limestone. They are 1. Fat Lime It is the lime which has high calcium oxide content. This can set and become hard only in the presence of carbon dioxide. This is white in colour. This lime is also called high-calcium lime, pure…

Lime is a binding material used in several ancient civil engineering works. A good quality lime should possess the following properties:

Lime is not freely available in nature but is obtained by burning naturally available materials such as: Lime is more or less pure calcium carbonate. The main sources of obtaining lime are the stones which possess clay, soluble silica, magnesium carbonate, alkalis and metallic oxides, sulphates, iron compounds and carbonaceous matter. Clay It is the…

There are several naturally available civil engineering materials or materials directly produced from natural materials. Among them are binding materials, which play a major role. Lime, cement and bitumen are important for civil engineers. Binding materials may be of air binding, hydraulic binding and autoclave binding. Air binding materials, also known as air-setting binding substances,…