公开(公告)号：US4565579A

公开(公告)日：1986-01-21

申请号：US545695

申请日：1983-10-26

申请人： Isami Fujioka ,  Kazutoshi Imada ,  Motoyasu Nishimura ,  Takayuki Ishibashi

发明人： Isami Fujioka ,  Kazutoshi Imada ,  Motoyasu Nishimura ,  Takayuki Ishibashi

IPC分类号： C04B7/00 ,  C04B28/10 ,  C04B41/00 ,  E21C37/14 ,  F42D99/00 ,  C04B2/02 ,  B02C19/00 ,  C04B7/34

CPC分类号： E21C37/14 ,  C04B28/10 ,  C04B41/0009 ,  C04B7/00

摘要： A nonexplosive chemical composition for gently and noiselessly breaking a rock or concrete mass. The composition comprises a principal component which is prepared by calcining a starting mixture comprising 100 parts by weight of quick lime and 1-20 parts by weight of calcium fluoride. In rock or concrete breaking operations, this composition in the form of aqueous slurry is poured into drill-holes and left to spontaneously hydrate and set with development of expansion pressure. For adequate retardation of the hydration, preferably a second fluoride such as Na.sub.2 SiF.sub.6 which gives CaF.sub.2 by reaction with CaO at the calcination temperature is added to the starting mixture. As an alternatively preferable method for the same purpose, an amino acid compound and/or a lignosulfonate is used as a hydration retarding agent which is mixed with the calcined principal component. Various auxiliary agents may optionally be added to this composition.

摘要翻译： 用于轻轻，无声地破碎岩石或混凝土块体的非爆炸性化学成分。 组合物包含通过煅烧包含100重量份生石灰和1-20重量份氟化钙的起始混合物制备的主要组分。 在岩石或混凝土破碎作业中，将水性浆料形式的组合物倒入钻孔中，并自发水合并发挥膨胀压力。 为了适当地延缓水合作用，优选将第二种氟化物如Na 2 SiF 6在煅烧温度下与CaO反应得到CaF2。 作为用于相同目的的另一种优选方法，使用氨基酸化合物和/或木质素磺酸盐作为与煅烧的主要成分混合的水合延迟剂。 各种辅助剂可任选地加入到该组合物中。