All-component steel slag concrete pile and soft foundation treatment construction process thereof

A technology of steel slag concrete and full components, which is applied in infrastructure engineering, sustainable waste treatment, sheet pile walls, etc., can solve the problems of high fly ash price, no full component utilization of steel slag, high cement cost, etc., and achieve protection Environment, save investment, improve the effect of foundation bearing capacity

Inactive Publication Date: 2018-10-09
GUANGXI ROAD & BRIDGE ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of the existing methods utilize the full components of steel slag, and with certain breakthroughs in the comprehensive utilization technology and industrialization of fly ash, the price of fly ash is getting higher and higher, and the use of cement, fly ash, sand and The cost of steel slag is high

Method used

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  • All-component steel slag concrete pile and soft foundation treatment construction process thereof
  • All-component steel slag concrete pile and soft foundation treatment construction process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A full-component steel slag concrete pile and its construction technology for treating soft foundations, comprising the following steps:

[0032] S1: The steel slag concrete uses cement, coarse steel slag, fine steel slag, steel slag powder and water as raw materials, mixes in proportion and then adds water; in each cubic meter of mixture, the weight of cement, steel slag powder, coarse steel slag, and fine steel slag The ratio is 278Kg: 70Kg: 1185Kg: 677Kg;

[0033] Among them, the amount of water used is controlled at a concrete slump of 50-80mm; the requirements for materials are: ordinary portland cement with a cement label of 42.5R; The expansion ratio is less than or equal to 2%; the particle size of the coarse steel slag is 5-20mm; the particle size of the fine steel slag is less than 5mm; the specific surface area of ​​the steel slag powder is 460m 2 / Kg or more, and meet the technical requirements of "Steel Slag Powder Used in Cement and Concrete" (GB / T 20491)...

Embodiment 2

[0045] A full-component steel slag concrete pile. The steel slag concrete pile is mixed with cement, coarse steel slag, fine steel slag, steel slag powder and water as raw materials to obtain an admixture, wherein, in each cubic meter of admixture, cement, steel slag powder, The weight ratio of coarse steel slag and fine steel slag is 270:65:1170:670. The rest of the methods are consistent with Example 1.

Embodiment 3

[0047] A full-component steel slag concrete pile. The steel slag concrete pile is mixed with cement, coarse steel slag, fine steel slag, steel slag powder and water as raw materials to obtain an admixture, wherein, in each cubic meter of admixture, cement, steel slag powder, The weight ratio of coarse steel slag and fine steel slag is 280:75:1190:682. The rest of the methods are consistent with Example 1.

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Abstract

The invention provides an all-component steel slag concrete pile and a soft foundation treatment construction process thereof and belongs to the technical field of building material soft foundation treatment construction. The construction process comprises the following steps: taking cement, crude steel slag, fine steel slag and steel slag powder as raw materials, mixing according to a ratio, adding water, and controlling slump to be 50-80mm; laying a working cushion layer, surveying and setting out, enabling a pile foundation to be in place, vibrating a sunken tube to a design depth, performing pore-forming inspection, feeding into the tube, vibrating and tube drawing, capping, performing base slot excavation, cleaning soil and cutting pile, and laying the cushion layer. According to theall-component steel slag concrete pile and the soft foundation treatment construction process thereof provided by the invention, the soft soil foundation bearing capacity can be improved by treating the soft foundation by the steel slag concrete pile, and the deformation property is changed. Moreover, the metallurgical industrial solid waste steel slag adopted in the invention replaces macadam, sand and fly ash, production and consumption of high-quality road materials are relieved to a certain degree, the overall utilization rate of solid wastes is improved by utilizing the solid wastes, theenvironment is protected, and building cost of projects is reduced.

Description

【Technical field】 [0001] The invention relates to materials for soft soil foundations and construction techniques thereof, in particular to a full-component steel slag concrete pile and construction techniques for treating soft foundations. 【technical background】 [0002] "A cement fly ash steel slag pile and its manufacturing process" disclosed in Chinese patent CN00115934, it is based on the existing data, using solid waste such as cement, fly ash and steel slag as raw materials, after mixing in proportion , add water, and use the hammer sinking pipe pouring method to form piles in the pile forming process, and the foundation treatment saves 30% of the engineering cost. The article "Research on the Application of Steel Slag Pile in the Treatment of Soft Foundation of Binhai Highway" published by "Hongshuihe" magazine (June 2017) used cement, medium sand, steel slag, water and other raw materials to study the steel slag concrete pile in Guangxi Binhai. The results show tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E02D5/38C04B18/14C04B20/00
CPCC04B18/142C04B20/0076C04B28/04C04B2201/50E02D5/385C04B22/002Y02W30/91
Inventor 卢忠玉陈勇华潘峰曹杨宋再励
Owner GUANGXI ROAD & BRIDGE ENG GRP CO LTD
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