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纤维素醚是机喷砂浆中必不可少的添加剂.研究了4种不同黏度的羟丙基甲基纤维素醚(HPMC)对机喷砂浆保水性能、密度、含气量、力学性能和孔径分布的影响.研究表明:HPMC能够显著提高砂浆的保水性能,掺量在0.15%时保水率均可超过90%;随HPMC掺量增加砂浆的密度逐渐降低,掺量在0.05%~0.20%时密度降低最为明显;砂浆的含气量随HPMC掺量的增加而增加;HPMC会明显降低水泥砂浆的力学性能,但砂浆的折压比会有升高趋势;掺入HPMC后砂浆的孔径尺寸显著增大,有害孔和多害孔所占比例明显增加.
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新型建筑材料
ISSN: 1001-702X
Year: 2016
Issue: 7
Volume: 43
Page: 49-52
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count: 8
Chinese Cited Count:
30 Days PV: 7
Affiliated Colleges: