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Sulfate-corrosion-resistant cement and cement mortar in marine environment as well as preparation method and application thereof

A technology that is resistant to sulfate cement and marine environments. It is applied in cement production, soil protection, and infrastructure engineering. It can solve the problems of lack of research on high-pressure jet grouting pile slurry materials, and achieve low cost, short construction period, and wide sources. Effect

Active Publication Date: 2020-09-18
山东恒泰工程集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, the research on high-pressure jet grouting piles has been concentrated on the improvement of construction machinery and heterogeneous piles, and the research on the slurry materials of high-pressure jet grouting piles is relatively lacking.

Method used

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  • Sulfate-corrosion-resistant cement and cement mortar in marine environment as well as preparation method and application thereof
  • Sulfate-corrosion-resistant cement and cement mortar in marine environment as well as preparation method and application thereof
  • Sulfate-corrosion-resistant cement and cement mortar in marine environment as well as preparation method and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0042] In the second aspect, the preparation method of the above-mentioned sulfate-resistant cement, the specific steps are:

[0043] calcining the shells, and grinding the shells after calcination to obtain shell lime powder;

[0044] Anhydrite powder is obtained by crushing and grinding the anhydrite;

[0045] Grinding the ball clay, and then calcining at high temperature to obtain calcined ball clay;

[0046] Sulfate-resistant cement is obtained by mixing shell lime powder, anhydrite powder, and calcined ball clay.

[0047]In some embodiments of the present invention, the shell is calcined at a temperature of 900-950° C., and the calcined time is 1.5-3 hours.

[0048] In some embodiments of the present invention, the fineness of the shell powder is 0.05-0.15mm, and the sieve residue is <3%; preferably, the fineness is 0.05-0.1mm.

[0049] In some embodiments of the present invention, the fineness of the anhydrite after grinding is 0.05-0.15mm, and the sieve residue is <3...

Embodiment 1

[0071] Prepare the slurry material of high-pressure rotary grouting piles resistant to sulfate erosion in the marine environment. The cement is made of the following raw materials in weight ratio: 28 parts of shell lime powder; 18 parts of anhydrite; 54 parts of calcined ball clay. Concrete slurry preparation methods include:

[0072] S1: Preparation of shell lime powder. Put scallops, oyster shells, etc. in a high-temperature furnace to calcinate at 920°C, keep warm for 1.5-3 hours, cool to room temperature, take out, grind to a fineness of 0.08mm, and the sieve with a square hole sieve is 2%;

[0073] S2: Preparation of anhydrite powder. Crush and grind the anhydrite to a fineness of 0.08mm, and the residue on the square hole sieve is 2%;

[0074] S3: Preparation of calcined ball clay. Grind the ball clay to a fineness of 0.08mm, and the sieve residue of the square hole sieve is 2%, calcined in a high-temperature furnace at 870°C, kept for 2.5h, cooled to room temperature...

Embodiment 2

[0077] The difference from Example 1 is 30 parts of shell lime powder; 18 parts of anhydrite; 52 parts of calcined ball clay.

[0078] S1: Preparation of shell lime powder. Put oyster shells and scallops in a high-temperature furnace to calcinate at 950°C, keep warm for 1.5-3 hours, cool to room temperature, take them out, and grind them to a fineness of 0.08mm, with a square-hole sieve residue of 2%;

[0079] S2: Preparation of anhydrite powder. Crush and grind the anhydrite to a fineness of 0.08mm, and the residue on the square hole sieve is 2%;

[0080] S3: Preparation of calcined ball clay. Grind the ball soil to a fineness of 0.08mm, and the sieve residue of the square hole sieve is 2%, calcined in a high-temperature furnace at 850-900°C, kept for 1.5-3h, cooled to room temperature, and taken out;

[0081] S4: Mix shell lime powder, calcined ball clay, and anhydrite powder evenly according to the weight ratio to obtain sulfate-resistant cement.

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Abstract

The invention relates to sulfate-corrosion-resistant cement and cement mortar in a marine environment as well as a preparation method and application thereof. The cement is prepared from the followingraw material components in parts by weight: 25-35 parts of shell lime powder, 15-20 parts of anhydrite and 40-50 parts of calcined ball clay, wherein the calcined ball clay is ball clay subjected tocalcination treatment. The preparation method comprises the following steps: calcining shells, grinding anhydrite and ball clay, calcining the ball clay, and mixing the calcined ball clay with anhydrite and shell lime powder. The problem that in the prior art, a high-pressure jet grouting pile is severely corroded by sulfate in the marine environment, and consequently the foundation reinforcing effect is poor is solved.

Description

technical field [0001] The invention belongs to the technical field of road and material engineering, and in particular relates to a sulfate corrosion-resistant cement in a marine environment, a preparation method thereof, and an application of a rotary grouting pile. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] The high-pressure rotary grouting pile uses a drilling rig to drill a grouting pipe with a nozzle into a predetermined position in the soil layer, and injects the grout from the nozzle in the form of a high-pressure flow, impacting and destroying the soil, making the soil layer dispersed in a granular form. The slurry is stirred and mixed, and solidified with t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/24C04B7/04C04B7/36C04B28/04E02D5/46E02D3/00C04B111/20C04B111/24
CPCC04B7/24C04B7/04C04B7/36C04B28/04E02D5/46E02D3/00C04B2111/00155C04B2111/24C04B2111/2015E02D2300/0018E02D2300/0021C04B14/06Y02P40/10
Inventor 樊守亮闫志平韩建国王连军樊琼琼赵硕崔新壮纪惠强颜华孙华琛张滨石会君武凯郭继敏王乐飞宁述涛姜涵
Owner 山东恒泰工程集团有限公司
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