Nano-silica powder improved palm reinforcing clay and preparation method thereof and application

A technology of nano-silica and silica powder, which is applied in the field of architecture, can solve the problems of poor ecological environment on the soil surface of slopes, affecting the normal operation of roads and bridges, fragmentation, and collapse, and achieve sustainable development of broadened land , the strength performance is improved, and the effect of improving the mechanical bite force

Inactive Publication Date: 2017-05-31
UNIV OF SHANGHAI FOR SCI & TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The ecological environment of the soil surface of the slope is harsh. If it is not treated, it is prone to fragmentation and collapse, which not only damages the environment, but also affects the normal operation of roads and bridges.

Method used

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  • Nano-silica powder improved palm reinforcing clay and preparation method thereof and application
  • Nano-silica powder improved palm reinforcing clay and preparation method thereof and application
  • Nano-silica powder improved palm reinforcing clay and preparation method thereof and application

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Embodiment 1

[0027] Such as figure 1 As shown, first, clay preparation S1 is carried out. It will be taken from a large-scale construction foundation pit project in Zhangjiang Industrial Park, Pudong, Shanghai. The nature of the soil is that the maximum dry density is 1.62g / cm 3 , the plastic limit moisture content is 20.56%, the optimum moisture content is 20.72%, the liquid limit moisture content is 42.34%, and the plasticity index is 21.78. Air-dried under natural conditions, crushed and sieved. Make the clay particles not larger than 2mm, take 2000g of soil in a compact state for each group of experiments, and divide the soil into three parts.

[0028] Then, the preparation S2 of palm fiber is carried out. The palm fiber was taken from Chongming, Shanghai, washed and dried under natural conditions, and then trimmed. The length was 12±2mm; the weight was weighed according to the clay mass percentage of 1.2% during preparation, and each group was divided into three parts.

[0029] T...

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Abstract

The invention provides a nano-silica powder improved palm reinforcing clay, which consists of clay, palm fiber and nano-silica powder, wherein the mass of the palm fiber is 1.2% of the clay, the mass of the nano-silica powder is 0.7-1.0% of the clay; the water content of the reinforcing clay is within 20-22%. The invention further provides a preparation method of the reinforcing clay, wherein the method includes steps of taking a certain mass of clay, weighing 1.2% of corresponding palm fiber by mass of clay; weighing 0.7-1.0% of corresponding nano-silica powder by mass of clay; mixing three parts evenly; adding water and controlling 20-22% of water content of soil; maintaining the soil in a maintaining cylinder for 24 h; after evaporating moisture to a predetermined value under a constant temperature condition, acquiring the nano-silica powder improved palm reinforcing clay. The nano-silica powder improved palm reinforcing clay improves the internal frictional angle of soil, improves the soil cohesive force, and enhances the anti-shearing intensity of soil.

Description

technical field [0001] The invention belongs to the field of architecture, and relates to an improved clay, in particular to a nano-silica powder-improved palm-reinforced clay and a preparation method and application thereof. Background technique [0002] The foundation soil layer in coastal areas is generally composed of soft soil, which is characterized by high natural water content, high compressibility coefficient, low strength, and special properties such as creep and thixotropy. big impact. To choose soft soil as roadbed, practical technical measures must be taken. [0003] The ecological environment of the soil surface of the slope is harsh. If it is not treated, it is prone to fragmentation and collapse, which not only damages the environment, but also affects the normal operation of roads and bridges. In order to ensure the stability of the slope and prevent the slope from falling and collapsing, it is necessary to take reasonable engineering measures to improve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/00E02D17/20
CPCE02D3/005E02D17/20E02D2300/0039
Inventor 赵超男璩继立
Owner UNIV OF SHANGHAI FOR SCI & TECH
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