The use of CTAB as an addition of DAP for improvement resisting acid rain on limestone
作者： Feigao Xu , Dan Li
DOI: 10.1016/J.APSUSC.2017.06.044
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摘要: Abstract The effect of hydroxyapatite (HA) formed by reacting limestone with mixture diammonium hydrogen phosphate (DAP) and cetyltrimethylammonium bromide (CTAB) in the consolidation protection carbonate stones was investigated. Different concentration CTAB used experiments mild condition order to study how affect structure HA. Moreover, strengthening evaluated artificially samples. result BET XRD both showed that HA remained almost unchanged except its crystallinity affected specific surface area decreased as consequence addition CTAB. A double application (as coupling agent consolidant) also investigated, which samples were coated DAP then followed self-made product. Scotch Tape test hardness proved cohesion between consolidant powder well ability against acid rain increased, ascribed
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