A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Expansive soil modifier and preparation method thereof, and improved expansive soil pavement base layer compaction method
The invention discloses an expansive soil improver, a preparation method and an improved expansive soil pavement base layer compaction method. The expansive soil improver comprises 20-30 parts of cement clinker, 25-50 parts of blast furnace slag, 20-40 parts of calcium oxide, 3-15 parts of a catalyst and 1 part of nano silicon powder. The catalyst is prepared from the following components in parts by weight: 20-30 parts of modified talcum powder, 20-40 parts of a stabilizer, 0.2-0.3 part of a water-retaining agent, 0.6-1 part of a coupling agent and 40-50 parts of water. The expansive soil improver can improve the strength of the expansive soil and improve the water stability. According to the pavement base layer compaction method, the actual situation that the natural water content of expansive soil is high is fully considered, the appropriate compaction control water content and dry density are determined with the maximum strength as the target, the determined water content is closer to the natural water content, the dry density is relatively low, however, water stability is good, the strength is large, and the compaction effect is good. The requirement of the pavement base on the unconfined compressive strength of the filler can be met.
本发明公开了膨胀土改良剂及制备方法、改良膨胀土路面基层压实方法，膨胀土改良剂包括：20～30份水泥熟料、25～50份高炉矿渣、20～40份氧化钙、3～15份催化剂、1份纳米硅粉。催化剂由以下组分按重量份制备而成：改性滑石粉20～30份、稳定剂20～40份、保水剂0.2～0.3份、偶联剂0.6～1份、水40～50份。本发明的膨胀土改良剂可以提高膨胀土的强度，提高水稳定性。本发明的路面基层压实方法充分考虑了膨胀土天然含水率高这一实际情况，以最大强度为目标确定合适的压实控制含水率和干密度，其确定的含水率更接近天然含水率，干密度相对较低，但水稳性好，强度大，能满足路面基层对填料无侧限抗压强度的要求。
Expansive soil modifier and preparation method thereof, and improved expansive soil pavement base layer compaction method
The invention discloses an expansive soil improver, a preparation method and an improved expansive soil pavement base layer compaction method. The expansive soil improver comprises 20-30 parts of cement clinker, 25-50 parts of blast furnace slag, 20-40 parts of calcium oxide, 3-15 parts of a catalyst and 1 part of nano silicon powder. The catalyst is prepared from the following components in parts by weight: 20-30 parts of modified talcum powder, 20-40 parts of a stabilizer, 0.2-0.3 part of a water-retaining agent, 0.6-1 part of a coupling agent and 40-50 parts of water. The expansive soil improver can improve the strength of the expansive soil and improve the water stability. According to the pavement base layer compaction method, the actual situation that the natural water content of expansive soil is high is fully considered, the appropriate compaction control water content and dry density are determined with the maximum strength as the target, the determined water content is closer to the natural water content, the dry density is relatively low, however, water stability is good, the strength is large, and the compaction effect is good. The requirement of the pavement base on the unconfined compressive strength of the filler can be met.
本发明公开了膨胀土改良剂及制备方法、改良膨胀土路面基层压实方法，膨胀土改良剂包括：20～30份水泥熟料、25～50份高炉矿渣、20～40份氧化钙、3～15份催化剂、1份纳米硅粉。催化剂由以下组分按重量份制备而成：改性滑石粉20～30份、稳定剂20～40份、保水剂0.2～0.3份、偶联剂0.6～1份、水40～50份。本发明的膨胀土改良剂可以提高膨胀土的强度，提高水稳定性。本发明的路面基层压实方法充分考虑了膨胀土天然含水率高这一实际情况，以最大强度为目标确定合适的压实控制含水率和干密度，其确定的含水率更接近天然含水率，干密度相对较低，但水稳性好，强度大，能满足路面基层对填料无侧限抗压强度的要求。
Expansive soil modifier and preparation method thereof, and improved expansive soil pavement base layer compaction method
膨胀土改良剂及制备方法、改良膨胀土路面基层压实方法
QIU WEIBO (author) / HUANG ZONGJIAN (author) / CHEN WEN (author) / ZHOU QING (author) / YANG BAO (author) / YU WEIJIA (author) / ZHANG LAIYING (author) / WANG XIAOYING (author)
2024-04-30
Patent
Electronic Resource
Chinese
| European Patent Office | 2022
Experimental Study on Expansive Soil Improved with Cation Modifier
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