Emulsified asphalt cement stabilized macadam

A technology for stabilizing crushed stone and emulsified asphalt with cement, applied in the field of road building materials, can solve problems such as failure to meet practical requirements, lack of systematic research on mechanical properties of stabilized crushed stone base materials, and pavement performance, and achieve modulus and compaction. The effect of excellent degree of compaction, high degree of compaction and good workability

Inactive Publication Date: 2015-12-30
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there is a lack of systematic research on the mechanical properties and road performance of emulsified asphalt cement stabilized gravel base materials, and it has not met the practical requirements.

Method used

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  • Emulsified asphalt cement stabilized macadam
  • Emulsified asphalt cement stabilized macadam
  • Emulsified asphalt cement stabilized macadam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The mixture consists of the following raw materials (by weight):

[0030] Gravel: 100; Cement: 3.5; Emulsified asphalt: 2. After weighing the raw materials according to the above ratio, add water to the mixture, and stir and mix evenly to obtain the roadbed material. The amount of water added is 4.9% of the weight of the gravel. Its performance indicators are shown in Table 1-Table 2.

Embodiment 2

[0032] The mixture consists of the following raw materials (by weight):

[0033] Gravel: 100; Cement: 3.5; Emulsified asphalt: 4. After weighing the raw materials according to the above ratio, add water to the mixture, and stir and mix evenly to obtain the roadbed material. The amount of water added is 4.7% of the weight of the gravel. Its performance indicators are shown in Table 1-Table 2.

Embodiment 3

[0035] The mixture consists of the following raw materials (by weight):

[0036] Gravel: 100; Cement: 4.5; Emulsified asphalt: 2. After weighing the raw materials according to the above ratio, add water to the mixture, and stir and mix evenly to obtain the roadbed material. The amount of water added is 5.0% of the weight of the gravel. Its performance indicators are shown in Table 1-Table 6.

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Abstract

The invention belongs to the technical field of road building materials and discloses emulsified asphalt cement stabilized macadam. The emulsified asphalt cement stabilized macadam is prepared from, by the weight ratio to macadam, 2-4 parts of mixed emulsified asphalt, 3.5-5.5 parts of mixed cement, 4.5-6.0 parts of water and 100 parts of macadam. The emulsified asphalt cement stabilized macadam has a hardness and softness feature and good water-damage-resistant performance, compared with common cement stabilized macadam, compression resistance and splitting strength of mixed materials are lowered, and flexural-tensile strength is approximate at the normal temperature of 20 DEG C and obviously improved at the low temperature of 5 DEG C. The dry shrinkage water-loss rate, dry shrinkage coefficient and dynamic modulus are lowered, and the limit strain capacity is increased; construction performance is excellent; compaction is easy, little segregation is generated, strength variability is small, and bad influences of delay forming and dry maintenance are weakened; the requirements for mechanical strength of pavement bases of high-grade highways and urban roads can be met, and base shrinkage cracks can be effectively reduced or prevented.

Description

technical field [0001] The invention relates to an emulsified asphalt cement stabilized crushed stone, which belongs to the technical field of road building materials. Background technique [0002] Cement-stabilized macadam base has the characteristics of high strength, large bearing capacity, and good fatigue resistance. The proportion of cement-stabilized gravel used in the sub-base is as high as 2 / 3 or more. [0003] The disadvantages of cement-stabilized macadam base materials are low deformation resistance, high brittleness, and easy cracks due to dehydration shrinkage and temperature shrinkage. Such cracks will be reflected to the asphalt surface layer during the service life of the pavement, thereby deteriorating the structural performance of the pavement. How to control the cracking of the cement-stabilized gravel base material and ensure its durable and stable road performance has become an urgent problem to be solved. [0004] In recent years, a lot of research ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B24/36
Inventor 谈至明方继伟符佳孙陆军朱唐亮谢玲儿
Owner TONGJI UNIV
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