A road paving material using construction waste composite iron tailings and its preparation method
A technology for paving materials and iron tailings, which can be used in buildings, roads, roads, etc., and can solve the problems of lack, insufficient strength, and aging resistance.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0082] Prepare 3 tons of road paving material, based on the total weight of the road paving material, it contains about 8% by weight of active micropowder made from slag and soot produced by domestic waste incineration for power generation, about 29.95% by weight of iron Tailings, about 62% by weight earth material separated from construction waste, and about 0.05% by weight activator. The active micropowder is obtained by pulverizing and grinding the slag and soot produced by domestic waste incineration for power generation in a jaw crusher and a grinder, and the specific surface area of the obtained micropowder is 2400m 2 / kg; the soil material is the soil separated from construction waste, mainly the soil produced by engineering construction; the iron tailings are full tailings from Jinling Iron Mine, and the specific surface area is about 185m 2 / g, the density is about 2.44g / cm 3 , the d50 particle size is about 41.50 μm; the activator is a composition of alkali activa...
Embodiment 2
[0090] Preparation of Modified and Reinforced Wood Fiber Materials
[0091] (1) The waste wood in the construction waste is chopped into fragment materials with a maximum diameter of 0.5-2cm;
[0092] (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;
[0093] (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;
[0094] (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
[0096] Prepare 3 tons of road paving materials according to the same operating procedure as in Example 1, and its difference from Example 1 is only that the road paving materials of Example 1 are added on the basis of the road paving materials 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 road design specification, the material is paved as a road base, and its 7d compressive strength is tested. According to the same measurement method as in Example 1, the 7d compressive strength recorded is 3.75MPa, which meets the requirement of 3 to 4Mpa for the 7d compressive strength of the expressway to the base, and the strength is higher than that of the road paving material in Example 1. 4.2%.
PUM
| Property | Measurement | Unit |
|---|---|---|
| specific surface area | aaaaa | aaaaa |
| density | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More