Mortar is a material widely used in the construction industry. It is a mixture of cement, lime, sand, and water and is used to bond building materials such as bricks and stones. Mortar production raw materials have a very important impact on the quality and performance of mortar. This article will introduce the types, characteristics, and applications of raw materials for mortar production and their role in mortar production.
Table of Contents
Cement is one of the most important raw materials in mortar production. It is a fine powder construction material, mainly made of limestone, clay, coal, and other materials after high-temperature calcination. There are many types of cement, which can be divided into Portland cement, aluminate cement, and ferrite cement according to their chemical composition. Among them, Portland cement is the most widely used cement, which has the characteristics of high strength, fast hardening speed, and good chemical stability, and is widely used in mortar production.
Lime is a white powdery building material, mainly made of limestone calcined at high temperatures. Lime has certain cementitious properties and can be mixed with sand and water to form lime mortar. Lime mortar has the characteristics of good air permeability and good plasticity, and is widely used in masonry construction and wall painting.
Sand is a natural mineral, mainly composed of quartz minerals, and is an indispensable raw material in the production of mortar. There are many types of sand, which can be divided into coarse sand, medium sand, and fine sand according to their particle size. Different types of sand have different effects on the performance of mortar. Generally speaking, fine sand has better plasticity and adhesion, and is suitable for making high-strength mortar; while coarse sand is suitable for making antifreeze mortar.
Additives are auxiliary raw materials in mortar production, which can improve the performance and manufacturability of mortar. Commonly used additives include thickeners, plasticizers, tackifiers, water reducers, water repellents, antifungal agents, etc. Among them, the water reducer is the most widely used additive, which can improve the fluidity and plasticity of the mortar, thereby improving the working performance of the mortar.
Water is one of the indispensable raw materials in mortar production, it is mixed with cement, lime, and sand to form mortar. The quality of water has an important influence on the quality and performance of mortar. In general, the higher the water saturation, the better the strength and durability of the mortar. In addition, indicators such as water hardness, PH value, and electrical conductivity will also have an impact on the performance of the mortar.
The selection and collocation of raw materials for mortar production need to be adjusted according to different engineering requirements and use environments. For example, in the marine environment, it is necessary to choose cement and lime that are resistant to chloride ion erosion, and sand that is resistant to seawater erosion; in high-temperature environments, it is necessary to choose high-temperature resistant cement and lime, and sand that is not easy to fall off under high temperature.
In short, the selection and matching of raw materials for mortar production has an important impact on the quality and performance of mortar. Manufacturers and users should choose suitable raw materials according to different engineering requirements and use environments, and strictly control the production process and quality to ensure the quality and use effect of mortar. There are many other excellent articles that you can continue browsing.