公开(公告)号：US5547505A

公开(公告)日：1996-08-20

申请号：US452644

申请日：1995-05-25

申请人： Kazuya Nakatsu ,  Takaharu Goto ,  Toru Higaki ,  Hideki Endo ,  Satoru Hirose ,  Yukinori Yamazaki

发明人： Kazuya Nakatsu ,  Takaharu Goto ,  Toru Higaki ,  Hideki Endo ,  Satoru Hirose ,  Yukinori Yamazaki

IPC分类号： C04B7/345 ,  C04B7/02

CPC分类号： C04B7/345 ,  C04B2103/0089

摘要： Compositions for low heat cements developed especially for massive concrete works and which exhibit a compressive strength/heat of hydration ratio of at least 7.0 at the age of 13 weeks. One of two inventions provides a powder prepared by mixing CaO, SiO.sub.2, and Al.sub.2 O.sub.3 materials, melting the mixture, quenching the melt, and grinding the quenched matter, the powder being composed mainly of amorphous substances and chemically having a CaO/SiO.sub.2 (molar ratio) of 0.8-1.5 and an Al.sub.2 O.sub.3 content of no more than 10 wt. %. The other invention provides a mixed powder comprising no less than 70 wt. % of a powder and no more than 30 wt. % of an addition (portland cement or the like), the powder being the same as that of the first invention in both predominance of amorphous substances and CaO/SiO.sub.2 (molar ratio) excepting the Al.sub.2 O.sub.3 content which is less than 12 wt. % in the second invention.

摘要翻译： 用于低热粘结剂的组合物特别用于大规模混凝土工程，并且在13周龄时具有至少7.0的抗压强度/水合比热。 两种发明之一提供了通过混合CaO，SiO 2和Al 2 O 3材料制备的粉末，熔化混合物，淬火熔体和研磨淬火物质，该粉末主要由无定形物质组成，化学上具有CaO / SiO 2（摩尔比 ）为0.8-1.5，Al2O3含量不超过10重量％。 ％。 另一发明提供了一种混合粉末，其含有不少于70wt。 ％的粉末和不超过30wt。 ％的添加剂（波特兰水泥等），除了小于12重量％的Al 2 O 3含量之外，除了无定形物质和CaO / SiO 2（摩尔比）外，粉末与第一发明相同。 ％。