A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Mortar capable of consolidating polluted soil
The invention discloses mortar capable of consolidating contaminated soil. The mortar is prepared from the following components in parts by weight: 50-70 parts of high-alumina cement, 8-10 parts of modified sodium bentonite, 8-10 parts of silica gel, 8-10 parts of a high-molecular polymer and 6-10 parts of a heavy metal ion chelating agent, the preparation method comprises the following steps: preparing modified sodium bentonite: crushing and homogenizing bentonite raw ore, and screening to obtain bentonite with the mesh number of 50-100 meshes; and uniformly mixing the 50-100-mesh bentonite with the sodium modifying agent and the modification additive, adding water, stirring to obtain a mixture, stacking, aging and drying the mixture to obtain the modified bentonite. In order to solve the problem that heavy metal ions are easy to dissolve out, three substances, namely bentonite, silica gel and a heavy metal ion chelating agent, are selected, and through the combined action of the three substances, the heavy metal ions can be firmly fixed and prevented from being dissolved out. In addition, the high-alumina cement is selected, so that the problem that heavy metal ions are dissolved out due to non-corrosion resistance is relieved to a certain extent.
本发明公开了一种可固结污染土壤的砂浆，由以下重量份数的成分组成：高铝水泥50～70份、改性钠基膨润土8～10份、硅胶8～10份、高分子聚合物8～10份、重金属离子螯合剂6～10份；改性钠基膨润土的制备：将膨润土原矿粉碎均化处理，筛选获得目数为50‑100目的膨润土；再将50‑100目的膨润土与钠化剂、改性助剂混合均匀，加水搅拌得混合料，混合料堆放陈化、干燥即得。本发明针对重金属离子易溶出的问题，选用了三种物质，分别是膨润土、硅胶和重金属离子螯合剂，通过这三种物质的组合作用，能够牢牢固定住重金属离子，防止重金属离子的溶出。另外，本发明选用高铝水泥，一定程度上缓解了由于不耐腐蚀从而造成重金属离子溶出的问题。
Mortar capable of consolidating polluted soil
The invention discloses mortar capable of consolidating contaminated soil. The mortar is prepared from the following components in parts by weight: 50-70 parts of high-alumina cement, 8-10 parts of modified sodium bentonite, 8-10 parts of silica gel, 8-10 parts of a high-molecular polymer and 6-10 parts of a heavy metal ion chelating agent, the preparation method comprises the following steps: preparing modified sodium bentonite: crushing and homogenizing bentonite raw ore, and screening to obtain bentonite with the mesh number of 50-100 meshes; and uniformly mixing the 50-100-mesh bentonite with the sodium modifying agent and the modification additive, adding water, stirring to obtain a mixture, stacking, aging and drying the mixture to obtain the modified bentonite. In order to solve the problem that heavy metal ions are easy to dissolve out, three substances, namely bentonite, silica gel and a heavy metal ion chelating agent, are selected, and through the combined action of the three substances, the heavy metal ions can be firmly fixed and prevented from being dissolved out. In addition, the high-alumina cement is selected, so that the problem that heavy metal ions are dissolved out due to non-corrosion resistance is relieved to a certain extent.
本发明公开了一种可固结污染土壤的砂浆，由以下重量份数的成分组成：高铝水泥50～70份、改性钠基膨润土8～10份、硅胶8～10份、高分子聚合物8～10份、重金属离子螯合剂6～10份；改性钠基膨润土的制备：将膨润土原矿粉碎均化处理，筛选获得目数为50‑100目的膨润土；再将50‑100目的膨润土与钠化剂、改性助剂混合均匀，加水搅拌得混合料，混合料堆放陈化、干燥即得。本发明针对重金属离子易溶出的问题，选用了三种物质，分别是膨润土、硅胶和重金属离子螯合剂，通过这三种物质的组合作用，能够牢牢固定住重金属离子，防止重金属离子的溶出。另外，本发明选用高铝水泥，一定程度上缓解了由于不耐腐蚀从而造成重金属离子溶出的问题。
Mortar capable of consolidating polluted soil
一种可固结污染土壤的砂浆
ZHU RONG (author) / ZHU FENGYI (author) / LIU YUTANG (author) / CAO XIAOFEI (author) / TANG DONGSHENG (author) / LIU YONG (author) / CHEN JUNHUA (author)
2021-05-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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