N-2000 is an admixture for concrete,with a low slump loss,high range water-reducing ratio and long-time retarding.The N-2000 is made up of naphthalene-sulfonic-maldehyde polycondensation(NSMP)and ATMP.Its characterist...N-2000 is an admixture for concrete,with a low slump loss,high range water-reducing ratio and long-time retarding.The N-2000 is made up of naphthalene-sulfonic-maldehyde polycondensation(NSMP)and ATMP.Its characteristic results from the synergistic effects of NSMP and ATMP.The results show that when 0.7%-1.2%of N-2000 is added to concrete(by mass of cement),the water reducing ratio is up to 20%-30%,and the slump of fresh concrete can be retained for 2 hours without significant loss.N-2000 can not only improve the workability of fresh concrete but also increase the strength of the hardened concrete,especially early strength.It is also proved to have a good compatibility with various cements.展开更多
基金Key Science and Technology Development Fund Project of Hubei Province.China(No.941PO106).
文摘N-2000 is an admixture for concrete,with a low slump loss,high range water-reducing ratio and long-time retarding.The N-2000 is made up of naphthalene-sulfonic-maldehyde polycondensation(NSMP)and ATMP.Its characteristic results from the synergistic effects of NSMP and ATMP.The results show that when 0.7%-1.2%of N-2000 is added to concrete(by mass of cement),the water reducing ratio is up to 20%-30%,and the slump of fresh concrete can be retained for 2 hours without significant loss.N-2000 can not only improve the workability of fresh concrete but also increase the strength of the hardened concrete,especially early strength.It is also proved to have a good compatibility with various cements.
