SCUP Report
Table of Contents
Abstract
In this report construction chemicals are defined as chemical compounds that are added as such or in formulations to or on construction materials at the construction site in order to improve workability, enhance performance, add functionality or protect the construction material or the finished structure made out of it. They undergo chemical reactions (e.g., cross-linking) or physical changes (e.g., solidification from melt) during their application. The following groups of chemicals will be discussed:
- Concrete admixtures
- Asphalt additives
- Adhesives and sealants
- Protective coatings
Worldwide, the construction industry contributes significantly to the global GDP, and is one of the most important elements of every economy. Today's demands on buildings, roads, bridges, tunnels and dams could not be met without construction chemicals. The strength of concrete has risen dramatically due to the development of construction chemicals. The diameter of a pillar needed to carry 100 tons was reduced from 100 cm to 10 cm between 1920 and 2004. The cross section of such a pillar is one-hundredth of what was needed in 1920. High-rise buildings must provide maximum space on minimum ground.
The raw materials needed for the production of construction chemicals are manufactured by the large chemical producers. Polymers are the most important group of raw materials and are found in virtually every construction chemical formulation ranging from adhesives to waterproofing treatments. The development of new construction chemicals in many cases requires interaction of the chemical producer, construction chemical manufacturer and end user.
Protective coatings are the most important group of construction chemicals, followed by adhesives and sealants, concrete admixtures and asphalt additives.
Construction chemicals will certainly gain importance in the future. While in some regions, the construction of new buildings will predominate, the focus will shift to renovation in the older economies. This will directly influence the usage patterns—concrete admixtures are predominately used for new buildings while more adhesives and sealants are consumed during renovation.