Road filling material prepared from slag soil and electric furnace slag and preparation method of road filling material

An electric furnace slag and road technology, applied in the direction of roads, roads, buildings, etc., can solve the problems of high cost, aging resistance, insufficient strength, etc., and achieve the effect of high shear resistance and reducing void ratio.

Active Publication Date: 2015-03-11
北京元泰达环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of the composition contains a large amount of resin, the cost is relatively high and it is not resistant to aging. In addition, due to the lack of cement components, at least the strength is seriously insufficient

Method used

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  • Road filling material prepared from slag soil and electric furnace slag and preparation method of road filling material
  • Road filling material prepared from slag soil and electric furnace slag and preparation method of road filling material
  • Road filling material prepared from slag soil and electric furnace slag and preparation method of road filling material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] A 3-ton road filling material was prepared, based on the total weight of the road filling material, comprising about 10 wt. stimulant. Wherein, the active micropowder is crushed and ground by the red brick in the construction waste in the jaw crusher and grinder, and the specific surface area of ​​the obtained micropowder is 2000m 2 / kg, by crushing and grinding the waste ceramics in the jaw crusher and grinder, the specific surface area of ​​the obtained fine powder is 2100m 2 / kg, the two are mixed with a weight ratio of 1:2.5; the slag is the slag from the demolition of steel-concrete structures; the electric furnace slag is the electric furnace steel slag produced by Shanghai Wuyang Factory; the activator is alkali The composition of class activator A and salt activator B, the weight ratio of activator A and B is 5:1; Base activator A is 30% by weight Ca(OH) based on the total weight of base activator A 2 , 10 wt% NaOH, 30 wt% Na 2 CO 3 and 30 wt% Na 2 SiO 3 9...

Embodiment 2

[0103] Preparation of Modified and Reinforced Wood Fiber Materials

[0104] (1) The waste wood in the construction waste is chopped into fragment materials with a maximum diameter of 0.5-2cm;

[0105] (2) Place the chopped segment material in a stirring tank, add 25% by weight of polyvinylpolypyrrolidone aqueous solution, stir evenly with a stirrer, and the mass ratio of the segment material to the surface modifier is 300:1;

[0106] (3) Add polyethylene powder to the fragment material after surface modification, fully mix, make it uniform, make the surface of fragment material adhere to polyethylene powder, the mass ratio of described fragment material and polyethylene is 80:1;

[0107] (4) heat-treat the mixture obtained in step (3) for 45 minutes at 135° C., and cool to room temperature to obtain a modified and reinforced wood fiber material.

Embodiment 3

[0109] Prepare 3 tons of road filling material according to the same operating procedure as in Example 1, and its difference from Example 1 is only that the road filling material of Example 1 is added on the basis of the road filling material of Example 1. The modified and reinforced wood fiber material prepared in Example 2 was 3% by weight of the total weight of the building material. According to the standard highway design specification, a certain amount of the material was taken to make a test piece of Φ×h=10cm×10cm, and its 28d unconfined compressive strength was tested according to the same method as in Example 1. It has been measured that its 28d strength is 1.87MPa, and its unconfined compressive strength has increased by about 16%, which fully meets the strength requirements of high-grade road subgrade filling materials, and also meets the unconfined compressive strength requirements of expressways.

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Abstract

The invention discloses a road filling material prepared from slag soil and electric furnace slag and a preparation method of the road filling material. According to the total weight of the road filling material, the road filling material comprises the following components in percentage by weight: 1-12% of active micro powder, 20-50% of electric furnace slag, 20-70% of slag soil and 0.02-0.06% of an activator. According to the road filling material, the requirements of road indexes can be met; the slag soil and the electric furnace slag can be fully used.

Description

technical field [0001] The invention relates to a road filling material made from slag soil and electric furnace slag and a preparation method thereof. Background technique [0002] At present, with the development of the economy and the progress of urbanization, the amount of muck produced every year such as old city reconstruction, road (subway) construction, and foundation pit excavation is very large, and it is not easy to degrade. Often the muck generated by the renovation of old urban areas and subway excavation in a city can reach 25 million cubic meters. The renovation and renovation of the old urban areas in my country's cities has produced a large amount of construction debris. 2 Buildings generate 0.5-1m 3 Construction waste, per 10,000 m 2 The construction process will produce 500-600t construction waste. However, most of the construction waste is transported to the suburbs or around the city for simple landfill or open storage without any treatment, which ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/08E01C7/36C04B18/16
CPCY02W30/91
Inventor 王以峰
Owner 北京元泰达环保科技有限公司
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