Influences of the N.B.R. Latex on the Hydration of Gypsum Plaster

N. B. R. Latex가 석고 플라스터의 수화에 미치는 영향

  • Published : 1982.03.01

Abstract

N.B.R. latex was used as the admixture in order to improve the various properties of gypsum plaster which is widely used as the construction material. The influences of N.B.R. latex on the hydration of gypsum plaster were studied. The results obtained are summerized as follows; 1. The water/gypsum plaster ratio is decreased wth increasing amounts of surfactant (P.O.E. Nonyl Phenol Ether) as the additive. 2. It is the pore of large size (${\gg}$7500A) that is mainly decreased with increasing amounts of surfactant. 3. With the small amount of surfactant as the additive, the hydration was slightly retarded, but was gradually recovered with increasing amounts of surfactant, and their heat of liberation after 20 hours were nearly same.

Keywords

References

  1. Gypsum & Lime v.105 no.44 Improvement of physical properties of slaked lime for plaster by molding with non-ionic highpolymer O.Sakaeda;M.Hujihara
  2. Gypsum & Lime v.133 no.10 Studies on the hydration of calcined gypsum retarding effect of sodium citrate and strong alkalinity C. Sano;N. Tadokoro;K. Miura;J. Kasai
  3. Gypsum & Lime v.140 no.17 Gypsum-resins composites Rikyo Kobayashi
  4. Gypsum & Lime v.141 no.62 Study on polymer-impregnated gypsum(Ⅰ) T. Yamaguchi
  5. Gypsum & Lime v.141 no.68 Study on preperation of gypsum-plastics-composite
  6. Gypsum & Lime v.141 no.74 Study on polymer-impregnated gypsum(Ⅱ) T. Yamaguchi;T. Ono
  7. Gypsum & Lime v.160 no.92 Water resisting property of ureamelamine polymer-impregnated gypsum T. Yasue;K. Matsumodo
  8. Gypsum & Lime v.134 no.12 Study on the improvement of water-resistance of set gypsum K. Setoyama;S. Takhasi
  9. Influence of sugar on the setting of plaster of Paris v.145 no.8 C. Sano;K. Miura
  10. Influence of sugar on the setting of plaster of Paris v.146 no.15 Influence of Calcium 2 Oxygluconate on setting of plaster of Paris
  11. Semento Gijuts Nenpo v.30 no.32 The influence of the organic compounds on the hydration of alite and cement R. Kondo;M. Daimon;E. Sakai;S. Yamanaka
  12. J. appl. Chem. v.11 Influence of some additives on the hydration reaction of portland cement, I. Non-ionic organic additives H.N. Stein
  13. J. Am. Ceram. Soc. v.53 no.2 Effect of organic compounds on the interconversions of calcium aluminate Hydrates : Hudration of tricalcium aluminate J.F. Young
  14. 일본화학회지 v.2 no.208 Influence of sodium aromatic sulfonates on the hydration of cement E. Sakai;S. Yamanaka;M. Daimon;R. Kondo
  15. Intersci. Publ. An intro. to clay colloid chem. H. van Olphen
  16. セメソトコソクリ-ト v.416 no.10 高化能減水産のセメソト粒子ヘの吸着 服部健一;鈴江重俊;岡田英三郞
  17. 高分子刊行會 高分子ラテツノス化學 室非宗一
  18. 工業と製品 v.40 no.51 細孔徑分布の測定とその製置 近藤連一
  19. 高分子刊行會 v.90 プラスチツクスコソクリ-ト 波木守;大浜嘉彦