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来源：百度知道 编辑：UC知道 时间：2024/06/01 05:20:24
Alkali-activation of aluminosilicate solids using alkaline
hydroxide and/or silicate solutions can be used to synthesise
inorganic geopolymeric binders, or alkali-activated cements,
displaying excellent physical and chemical properties [1–4].
Experimental evidence suggests that the principal binding phase
within geopolymers, where low-Ca source materials are used, is
an X-ray amorphous aluminosilicate gel consisting of a threedimensional
framework of SiO4 and AlO4 tetrahedra linked by
corner-shared O atoms [1,3]. The negatively-charged tetrahedral
Al sites in the network are charge-balanced by alkali metal
cations such as Na+ and/or K+. This aluminosilicate gel can be
used to bind various mineral aggregates, such as sand, natural
rock and/or other mineral fragments to produce mortars and
concretes. On the other hand, if the raw material used is rich in
Ca, such as a blast furnace slag, there is growing evidence to
hydroxide and/or silicate solutions can be used to synthesise
inorganic geopolymeric binders, or alkali-activated cements,
displaying excellent physical and chemical properties [1–4].
Experimental evidence suggests that the principal binding phase
within geopolymers, where low-Ca source materials are used, is
an X-ray amorphous aluminosilicate gel consisting of a threedimensional
framework of SiO4 and AlO4 tetrahedra linked by
corner-shared O atoms [1,3]. The negatively-charged tetrahedral
Al sites in the network are charge-balanced by alkali metal
cations such as Na+ and/or K+. This aluminosilicate gel can be
used to bind various mineral aggregates, such as sand, natural
rock and/or other mineral fragments to produce mortars and
concretes. On the other hand, if the raw material used is rich in
Ca, such as a blast furnace slag, there is growing evidence to
碱激活铝固体使用碱性
氢氧化和/或硅的解决方案可用于合成
无机土聚粘结剂，或碱水泥，
展示良好的物理和化学特性[ 1-4 ] 。
实验证据表明，主要的有约束力的阶段
在地聚合物，低钙源材料的使用，是
X -射线无定形硅铝酸盐凝胶组成的三维
框架和AlO4四面体SiO4联系
角落共享氧原子[ 1,3 ] 。负电荷的四面体
基地网站在网络中的电荷平衡的碱金属
阳离子如Na +和/或K + 。这种凝胶可以硅酸铝
用于绑定的各种矿物集合体，如砂，天然
岩石和/或其他矿物碎片生产迫击炮和
混凝土。另一方面，如果使用的原料丰富，
钙，如高炉矿渣，越来越多的证据来
建议相结合形成的是一种混合的钙
硅酸盐水合物（肽）和铝硅酸盐凝胶，其相对
比例可确定在一定程度上的
丰富的钙从源材料和化学计量学
反应