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Cement stabilized base material, preparation, application and preparation method of road base

A base material and cement stabilization technology, applied in the field of building materials, can solve problems such as unfavorable high-temperature construction or long-distance transportation, weak resistance to water damage and freeze-thaw resistance, and easy to be corroded by acid, so as to reduce energy consumption, The effect of improving service life and delaying setting time

Active Publication Date: 2015-04-29
SHANGHAI HIGHWAY BRIDGE (GRP) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the poor shrinkage resistance and poor durability of the cement stabilized base material in the prior art, which is easy to be corroded by acid, and the initial setting time is too short, which is not conducive to high-temperature construction or long-distance transportation. It provides a cement-stabilized base material, preparation, application and preparation method of road base

Method used

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  • Cement stabilized base material, preparation, application and preparation method of road base
  • Cement stabilized base material, preparation, application and preparation method of road base

Examples

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Embodiment 1

[0043] A cement stabilized base material, comprising the following components: 2% alkaline slag, 1.5% cement and base material; the base material includes 5% desulfurized gypsum and 95% crushed stone; the percentage is accounted for The mass percentage of base material;

[0044] The desulfurized gypsum includes: 42.4% SO 3 , 26.6% of CaO, 10.7% of MgO and 10%-15% of water of crystallization, the percentage is the mass percentage of the flue gas desulfurization gypsum;

[0045] The described alkaline slag is alkaline slag whose quality index conforms to the current national standard "Granulated Blast Furnace Slag Powder Used in Cement and Concrete" GB / T18046 and whose grade is above S95, including: 35% CaO, 33 % SiO 2 , 16% Al 2 o 3 , 8% MgO, 1% Fe 2 o 3 , 0.2% Na 2 o 3 And the MnO of 0.8%, described percentage is the mass percent that accounts for described alkaline slag;

[0046] The cement is Portland cement (P·O32.5) with a strength of 32.54;

[0047] The specific...

Embodiment 2

[0049] A cement stabilized base material, comprising the following components: 1.5% alkaline slag, 1.5% cement and base material; the base material includes 5% desulfurized gypsum and 95% crushed stone; the percentage is The mass percentage of base material;

[0050] The desulfurized gypsum includes: 42.4% SO 3 , 26.6% of CaO, 10.7% of MgO and 15% of water of crystallization, said percentage is the mass percentage of said flue gas desulfurization gypsum;

[0051] Described alkaline slag is the alkaline slag whose quality index conforms to the provisions of the current national standard "Granulated Blast Furnace Slag Powder Used in Cement and Concrete" GB / T18046 and is above S95, including: 38% CaO, 30 % SiO 2 , 9% Al 2 o 3 , 10% MgO, 1% Fe 2 o 3 , 1% Na 2 o 3 And the MnO of 0.8%, described percentage is the mass percent that accounts for described alkaline slag;

[0052] The cement is Portland cement (P·O42.5) with a strength of 42.5;

[0053] The specifications of t...

Embodiment 3

[0055] A cement stabilized base material, comprising the following components: 1.5% alkaline slag, 2% cement and base material; the base material includes 5% desulfurized gypsum and 95% crushed stone; the percentage is accounted for The mass percentage of base material;

[0056] The desulfurization gypsum is the flue gas desulfurization gypsum of Shanghai Shidongkou Power Plant, and the flue gas desulfurization gypsum includes 10% water, and the percentage is the mass percentage of the flue gas desulfurization gypsum.

[0057] The described alkaline slag is alkaline slag whose quality index conforms to the current national standard "Granulated Blast Furnace Slag Powder Used in Cement and Concrete" GB / T18046 and whose grade is above S95, including: 35% CaO, 33 % SiO 2 , 9% Al 2 o 3 , 10% MgO, 1% Fe 2 o 3 , 0.2% Na 2 o 3 And the MnO of 0.2%, described percentage is the mass percent that accounts for described alkaline slag;

[0058] The cement is Portland cement (P·O42.5...

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Abstract

The invention discloses a cement stabilized base material, a preparation, an application and a preparation method of a road base. The cement stabilized basic material comprises the following materials: 1%-3% of basic slag and 1%-3% of cement and base materials, wherein the basic materials comprises 0.5%-8% of desulfurization gypsum and 92%-99.5% of crushed stone in mass percentage of the basic materials. The preparation method of the cement stabilized base material comprises the step of uniformly mixing the components. According to the preparation method of the road base, the road base is prepared from the cement stabilized base material with the conventional preparation process and conditions. The cement stabilized base material has the advantages as follows: the material cost is reduced, the service life of a road structure is prolonged, the economic benefit is increased, the cement setting time is delayed, the strength, the airtightness, the water retention, the water resistance, the shrinkage crack resistance, the freeze-thaw resistance, the moisture damage resistance and sulfate corrosion resistance of the material are improved, novel application of the desulfurization gypsum is exploited, and the environment is protected effectively.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a cement-stabilized base material, a preparation method and application thereof, and a preparation method of a road base. Background technique [0002] Generally speaking, for today's construction pavement, its structure is divided into base course and surface course. For ordinary urban pavements, the cement-stabilized base materials used in the base generally include slag, cement and gravel, among which ordinary Portland cement (P.O32.5 or P.O42.5) is generally used as cement, and its dosage Generally, it is 3% to 6% (the percentage is the mass percentage of the crushed stone); for low-grade pavement, the base layer is generally made of fly ash stabilized crushed stone, lime stabilized soil and other materials. [0003] There are many defects in ordinary cement-stabilized base materials: first, poor shrinkage resistance, easy to produce cracks, and cause road damage; since the...

Claims

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Application Information

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IPC IPC(8): C04B28/04
Inventor 陆青清严军曹亚东蔡明朱天同周玥陈智蓉柴冲冲任天晔
Owner SHANGHAI HIGHWAY BRIDGE (GRP) CO LTD
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