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A kind of calcareous sand modifier and preparation method thereof

A modifier and calcareous technology, applied in the field of calcareous sand, can solve the problem that the strength of calcareous sand is difficult to meet the needs of the construction of the island reef filling project, improve the compressive strength and shear strength, and reduce the storage space. Effect

Active Publication Date: 2022-06-14
HAINAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The strength of calcareous sand is often difficult to meet the needs of the construction of island and reef reclamation projects, so in-depth research on the modification of calcareous sand is needed

Method used

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  • A kind of calcareous sand modifier and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A calcareous sand modifier, raw materials by weight: 0.35 parts of nano-clay, 1.5 parts of nano-magnesia, 1.6 parts of nano-graphyne, 0.15 parts of coconut shell fiber, 0.43 parts of banana fiber, 2.4 parts of methyl cellulose; The particle size of the nano magnesium oxide is 40nm-60nm, and the purity is 99.9%; the length of the coconut shell fiber is 50mm-100mm; the length of the banana fiber is 100mm-150mm.

[0021] The preparation method of the above-mentioned calcareous sand modifier: first put the nano-clay and nano-magnesium oxide in a ball mill and mix them evenly, and perform the first ball milling. Under the conditions of a ball milling temperature of 30°C and a ball milling speed of 45r / min, the ball milling time is 30min; then add Nano-graphyne, carry out ball milling for the second time, under the conditions of ball milling temperature 45 ℃, ball milling speed 150r / min, ball milling time 45min; finally add methyl cellulose, coconut shell fiber and banana fibe...

Embodiment 2

[0023] A calcareous sand modifier, raw materials by weight: 0.4 parts of nano-clay, 1 part of nano-magnesia, 1.8 parts of nano-graphyne, 0.2 parts of coconut shell fiber, 0.4 part of banana fiber, 2 parts of methyl cellulose; The particle diameter of the nano magnesium oxide is 40nm-60nm, and the purity is 99.9%; the length of the coconut shell fiber is 50-100mm; the length of the banana fiber is 100-150mm. The preparation method is consistent with Example 1.

Embodiment 3

[0025] A calcareous sand modifier, raw materials by weight: 0.3 parts of nano-clay, 2 parts of nano-magnesia, 1.5 parts of nano-graphyne, 0.1 part of coconut shell fiber, 0.5 part of banana fiber, 3 parts of methyl cellulose; The particle diameter of the nano magnesium oxide is 40nm-60nm, and the purity is 99.9%; the length of the coconut shell fiber is 50-100mm; the length of the banana fiber is 100-150mm. The preparation method is consistent with Example 1.

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Abstract

The invention provides a calcareous sand modifier and a preparation method thereof. The calcareous sand modifier includes the following raw materials in parts by weight: 0.3-0.4 parts of nano-clay, 1-2 parts of nano-magnesium oxide, and 1.5-2 parts of nano-graphyne 1.8 parts, coconut shell fiber 0.1-0.2 parts, banana fiber 0.4-0.5 parts, methyl cellulose 2-3 parts. Using the calcareous sand modifier of the present invention, on the basis of using less modifiers, the compressive strength and shear strength of the modified calcareous sand are significantly improved, effectively reducing the storage space and transport capacity requirements of the modifier, It is better used in the modification of calcareous sand.

Description

technical field [0001] The invention relates to the field of calcareous sand, in particular to a calcareous sand modifier and a preparation method thereof. Background technique [0002] Calcareous sand ("CS" for short) is widely distributed in the South my country Sea. The special depositional environment makes calcareous sand easy to break, high compressibility and low strength, which is difficult to meet the needs of actual engineering. As a commonly used gelling agent, cement can increase the strength of calcareous sand, but the strength of cement-strengthened calcareous sand ("CCS" for short) is limited. [0003] Compared with terrigenous sands, calcareous sands are irregular and angular in shape, and are mainly divided into dendritic skeleton sand particles, massive sand particles, flaky sand particles, and biological debris such as shells and conchs. Calcareous sand and terrigenous sand have huge differences in mechanical properties and engineering properties. The st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/38C04B14/10C04B14/30C04B14/02C04B18/24
CPCC04B40/0046C04B14/10C04B20/008C04B14/304C04B14/24C04B18/248C04B24/383Y02W30/91
Inventor 胡俊
Owner HAINAN UNIV