Natural sodium lignosulfonate water reducing agent for buildings

Abstract

The invention belongs to the field of building materials, and provides a natural sodium lignosulfonate water reducing agent for buildings. The water reducing agent is prepared from the following raw materials in parts by weight: 20-30 parts of natural extracted lignin, 1-5 parts of sulfur, 15-25 parts of a 15% sodium hydroxide solution, 1-5 parts of 98% concentrated sulfuric acid, 5-10 parts of formaldehyde, 1-5 parts of casein and 1-5 parts of tricyclic aromatic hydrocarbons. Use of sulfide is reduced, and discharge of sulfide waste and environmental pollution are reduced; natural lignin is adopted as the main raw material, and a product is safe and stable in performance; prepared concrete has excellent workability, and is free of segregation and bleeding and uniform in appearance color.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a natural lignin sulfonate sodium salt building water reducer. Background technique [0002] The rapid development of the modern construction industry and the continuous improvement of construction technology have also put forward higher and higher requirements for the performance of concrete. High-efficiency water-reducing agent helps to improve the performance of concrete. Water-reducing agent refers to the condition that the workability of concrete and the amount of cement remain unchanged, which can reduce the amount of mixing water and increase the strength of concrete; Under the condition, the admixture that saves the amount of cement is used. At present, the commonly used naphthalene-based water reducer has a good tax reduction effect, but a large amount of sulfide will be produced in the production process, which has caused a huge burden on the increasingly ...

AI Technical Summary

Problems solved by technology

The currently commonly used naphthalene-based water reducer has a good tax reduction effect, and a large amount of sulfide will be produced in the production process, which has caused a huge burden on the increasingly serious environmental problems of air smog.