Title:
【発明の名称】モルタルセメントの曲げ結合強度、空気連行および作業性を調節する添加剤
Document Type and Number:
Japanese Patent JP2002521298
Kind Code:
A
Abstract:
A mortar cement composition is composed of a cement or ground portland cement clinker, ground limestone and/or lime, sand, a sufficient amount of water to render the composition flowable, and at least one water-soluble polymer present in the amount having a lower limit of about 0.001 wt % and an upper limit of about 0.04 wt % based on total dry weight of the ingredients, with the proviso that the extent of adsorption of the polymer onto the cement is less than 50%, and wherein the resulting mortar has 8-16% air content and greater than 70 psi flexural bond strength. This mortar cement composition is for use in building structures in all seismic zones.
Inventors:
Arthur El Antira
Sun Ji Ju
Thomas Jay Podras
Ten-Shaw Yang
Sun Ji Ju
Thomas Jay Podras
Ten-Shaw Yang
Application Number:
JP2000561138A
Publication Date:
July 16, 2002
Filing Date:
May 25, 1999
Export Citation:
Assignee:
HERCULES INCORPORATED
International Classes:
C04B24/38; C04B28/04; (IPC1-7): C04B28/04; C04B24/38
Domestic Patent References:
| JPS62182143A | 1987-08-10 | |||
| JPH06316451A | 1994-11-15 | |||
| JPS63103848A | 1988-05-09 | |||
| JPS56155058A | 1981-12-01 | |||
| JPS5815053A | 1983-01-28 |
Foreign References:
| US4939192A | 1990-07-03 |
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)