Study on improving water absorption performance of water-resistant gypsum board
YU Ye
Abstract：Organosilicon water repellent,tartaric acid and portland cement were used as hydrophobic material to study the ef-fects of organosilicon water repellent,tartaric acid and cement on the overall water absorption,surface water absorption and fracture strength of the finished water-resistant gypsum board.The test results show that the water-resistant gypsum board with organosili-con waterproofing agent as hydrophobic material has good surface and overall water absorption,and when the consumption of organosilicon waterproofing agent is 20 g/m2,the overall water absorption of gypsum board is less than 10％,and the improvement of the water absorption rate by aging for 7 d and 14 d is obvious.Tartaric acid had little effect on improving the water absorption performance of paper-faced gypsum board.Silicate cement reduced the water absorption of paper-faced gypsum board,and the ini-tial water absorption and initial surface water absorption of paper-faced gypsum board were 8.62％and 138.6 g/m2 when the addi-tion amount was 16 g/m2,and the transverse and longitudinal fracture strengths were 426.0 N and 172.6 N,respectively.
Keywords：FGDsilicone waterproofing agenttartaric acidPortland cementgypsum board overall water absorptionaging time
Publication Date：2024-09-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 69-71,95 )