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A platform for research: civil engineering, architecture and urbanism
Rock soil curing agent, modified rock soil material and preparation method of modified rock soil material
The invention belongs to the technical field of roadbed curing, and relates to a rock-soil curing agent, a modified rock-soil material and a preparation method of the modified rock-soil material. The concrete comprises the following components in parts by weight: 100 parts of cement; and 0.2-1 part of an ionic admixture. According to the ion admixture, high-valence cations such as Ca < 2 + >, Mg < 2 + > and Al < 3 + > are replaced with low-valence ions adsorbed on the surfaces of rock-soil particles through the ion exchange effect, so that the thickness of double electric layers on the surfaces of the rock-soil particles is reduced. Meanwhile, due to the high-concentration Na < + > ions contained in the ionic admixture, the high-concentration difference exists between the cation concentration between rock-soil mineral layers and the cation concentration in the external environment, and the interval between the rock-soil mineral layers is reduced. And on the premise, the repulsive force among rock and soil particles is weakened, the particles are more easily compacted, and the compaction characteristic of the solidified soil is improved.
本发明属于路基固化技术领域，涉及一种岩土固化剂、改性岩土材料及其制备方法。按照重量份数计算，包括如下组分：水泥100份；离子外加剂0.2~1份。本发明中离子外加剂通过离子交换作用，将Ca2+、Mg2+、Al3+等高价阳离子与岩土颗粒表面吸附的低价离子置换，从而减小岩土颗粒表面双电层厚度。同时，离子外加剂中所含高浓度的Na+离子，使岩土矿物层间的阳离子浓度与外部环境中存在高浓度差，使岩土矿物层间间距减小。在此前提下，岩土颗粒间排斥力减弱，颗粒变得更易被压实，提高了固化土的压实特性。
Rock soil curing agent, modified rock soil material and preparation method of modified rock soil material
The invention belongs to the technical field of roadbed curing, and relates to a rock-soil curing agent, a modified rock-soil material and a preparation method of the modified rock-soil material. The concrete comprises the following components in parts by weight: 100 parts of cement; and 0.2-1 part of an ionic admixture. According to the ion admixture, high-valence cations such as Ca < 2 + >, Mg < 2 + > and Al < 3 + > are replaced with low-valence ions adsorbed on the surfaces of rock-soil particles through the ion exchange effect, so that the thickness of double electric layers on the surfaces of the rock-soil particles is reduced. Meanwhile, due to the high-concentration Na < + > ions contained in the ionic admixture, the high-concentration difference exists between the cation concentration between rock-soil mineral layers and the cation concentration in the external environment, and the interval between the rock-soil mineral layers is reduced. And on the premise, the repulsive force among rock and soil particles is weakened, the particles are more easily compacted, and the compaction characteristic of the solidified soil is improved.
本发明属于路基固化技术领域，涉及一种岩土固化剂、改性岩土材料及其制备方法。按照重量份数计算，包括如下组分：水泥100份；离子外加剂0.2~1份。本发明中离子外加剂通过离子交换作用，将Ca2+、Mg2+、Al3+等高价阳离子与岩土颗粒表面吸附的低价离子置换，从而减小岩土颗粒表面双电层厚度。同时，离子外加剂中所含高浓度的Na+离子，使岩土矿物层间的阳离子浓度与外部环境中存在高浓度差，使岩土矿物层间间距减小。在此前提下，岩土颗粒间排斥力减弱，颗粒变得更易被压实，提高了固化土的压实特性。
Rock soil curing agent, modified rock soil material and preparation method of modified rock soil material
一种岩土固化剂、改性岩土材料及其制备方法
HU LANG (author) / LU MO (author) / TANG LIN (author) / CHEN HAI (author) / GAN YUNFENG (author) / LU QINGSHAN (author) / QIU DONGHAI (author) / YANG WENBING (author) / WU CHANGBIAO (author) / SHEN ZHIJI (author)
2024-03-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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