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Novel road steel slag cement and preparation method and application thereof

A steel slag and cement technology, which is applied in the development and application of new road steel slag cement formulations, can solve the problems of large environmental impact, low utilization rate, and high cost, and achieve the effects of reducing the proportion of clinker mixing, improving performance, and reducing costs

Inactive Publication Date: 2017-07-21
河北长大交通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the construction of expressways has the disadvantages of large land occupation, great impact on the environment, large investment, high cost, and long construction period.
As a kind of industrial solid waste, steel slag has the characteristics of low utilization rate and wide sources in China.

Method used

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  • Novel road steel slag cement and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The novel road steel slag cement of present embodiment is prepared according to the following steps:

[0029] (1) Weighing raw materials: Weigh 68kg cement clinker, 20kg steel slag, 5kg slag, 4.7kg gypsum and 0.45kg concrete stimulator respectively;

[0030] (2) Raw material crushing: the raw material taken in step (1) is crushed respectively and passed through a 2mm sieve respectively to obtain the crushed raw material;

[0031] (3) Grinding: After grinding the cement clinker in the crushed raw materials obtained in step (2) with a small mill, pass through a 80 μm square hole sieve, and the sieve residue is 9.2kg; the crushed raw materials except cement clinker Grind for 40min with a small mill; Mix evenly to obtain the novel road steel slag cement of the present invention;

[0032] The sieve balance in step (3) refers to the remaining quality after the material is sieved.

Embodiment 2

[0034] The novel road steel slag cement of present embodiment is prepared according to the following steps:

[0035] (1) Weighing raw materials: Weigh 71kg cement clinker, 19kg steel slag, 4.8kg slag, 4.3kg gypsum and 0.5kg concrete stimulator respectively;

[0036] (2) Raw material crushing: the raw material taken in step (1) is crushed respectively and passed through a 2mm sieve respectively to obtain the crushed raw material;

[0037] (3) Grinding: After grinding the cement clinker in the crushed raw materials obtained in step (2) with a small mill, pass through a 80 μm square hole sieve, and the sieve residue is 3.8kg; the crushed raw materials except cement clinker Grind with a small mill for 50min; mix evenly to obtain the novel road steel slag cement of the present invention;

[0038] The sieve balance in step (3) refers to the remaining quality after the material is sieved.

Embodiment 3

[0040] The novel road steel slag cement of present embodiment is prepared according to the following steps:

[0041] (1) Weighing raw materials: Weigh 70kg cement clinker, 21kg steel slag, 5.4kg slag, 4.1kg gypsum and 0.4kg concrete stimulator respectively;

[0042] (2) Raw material crushing: the raw material taken in step (1) is crushed respectively and passed through a 2mm sieve respectively to obtain the crushed raw material;

[0043] (3) Grinding: After the cement clinker in the crushed raw materials obtained in step (2) is ground with a small mill, pass through a 80 μm square hole sieve, and the sieve residue is 5kg; the raw materials after crushing except cement clinker are used Small mill grinds 60min; Mix evenly, promptly obtain the novel road steel slag cement of the present invention;

[0044] The sieve balance in step (3) refers to the remaining quality after the material is sieved.

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Abstract

The invention relates to novel road steel slag cement formula development and application and provides novel road steel slag cement simple in preparation and excellent in performance and a preparation method and application thereof. The novel road steel slag cement is prepared from, by mass, 68-72 parts of cement clinker, 18-22 parts of steel slag, 4.6-5.4 parts of mineral slag, 4.1-4.8 parts of gypsum and 0.4-0.6 part of concrete activating agent. By proportional mixing the recycled steel slag with the cement clinker, the mineral slag and the like, freezing resistance, corrosion resistance and volume stability of the cement are improved, cement dry shrinkage changes are reduced, and hydration heat is reduced. The novel road steel slag cement in application of road construction has advantages of high strength, abrasion resistance, skid resistance, high durability, low maintenance cost, prolonging of service lives of expressways and the like. The novel road steel slag cement is applicable to the field of pavement materials.

Description

technical field [0001] The invention belongs to the field of pavement materials, and relates to the development and application of a novel road steel slag cement formula. Background technique [0002] Highway construction is the country's basic industry and the leading industry of economic development. During the long-term use of highways, they will be exposed to sunlight, soaked in rainwater, and rolled and worn by vehicles, which will cause different degrees of damage to the road surface. Among them, the expressway is more severely damaged than ordinary roads due to its heavy use and harsh environment. Therefore, how to manufacture high-performance, high-strength cement for roads, how to make the concrete foundation more stable, so as to give full play to the use efficiency of the expressway, prolong the service life of the expressway, and reduce the damage of the road surface and subgrade will be the key points in the development process of the expressway. new issues to ...

Claims

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Application Information

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IPC IPC(8): C04B7/21C04B7/36C04B28/08
CPCC04B7/21C04B7/36C04B28/082C04B2201/50C04B14/06C04B14/02Y02P40/10
Inventor 杨杰武文秀张帅黄士周范明霞刘娜
Owner 河北长大交通科技有限公司
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