The catalogue is divided into two parts. The first part is the "disabling catalogue" of engineering materials and the second part is the "restricted catalogue" of engineering materials. The first batch of building materials that were banned amounted to a total of ten types, including: multi-functional composite type (two or more types of functions) concrete expansion agent, calcium oxide type concrete expansion agent, and clay brick (including other raw materials, but the amount of clay was exceeded 20% solid bricks, perforated bricks, hollow bricks), clay and shale ceramsites, building materials made from clay and shale ceramsites, hand-formed GRC lightweight partition boards, and amphibole asbestos (ie blue Asbestos) Asbestos and other building materials used as raw materials, Polystyrene insulation boards without cement (gypsum) reinforced with glass fiber mesh, PVC insulation strips, Sea sand, and Ma Gang sand.

Why are these ten types of construction materials banned from use? The reporter saw that after each type of prohibited building materials, there were banned instructions. Taking concrete as an example, this building material was banned, mainly because of this The quality of materials is difficult to control, and the basis for being listed as a prohibited catalogue is the "Eleventh Five-Year" promotion and application of the "Construction Project" of the Ministry of Construction and the restriction of prohibited technologies (first batch).

In addition, what are the reasons? "The backward production process, pollution of the environment, endanger human health, low strength, easy to crack, not resistant to aging, easy corrosion of steel, affect the structure of life, severely reduce the strength of concrete, mortar and durability The production process destroys arable land and vegetation, which are the reasons for the banned construction materials,” said the staff member.

In the restricted list, the reporter saw that it included four kinds of decorative materials. They were: Polyvinyl alcohol-based imitation ceramic interior wall coatings, polyacrylamide-based construction adhesives, and non-water-resistant wall scrapers. Polyvinyl formal adhesive (107 glue). The reasons for these restrictions are: poor water resistance, excessive discharge of pollutants, poor temperature resistance, poor durability, easy to fall off, poor water resistance, low strength, poor adhesion, and excessive discharge of pollutants.