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Semi-rigid base material and construction process

A semi-rigid base, cementitious material technology, applied in the direction of coagulation pavement, roads, roads and other directions paved on site, can solve the problem of affecting the overall stability and durability of highways, easy to produce shrinkage cracks and temperature shrinkage cracks, affecting the overall stability and durability of highways. Transportation safety, passenger comfort and other issues, to achieve the effect of reducing maintenance and maintenance costs, reducing cracks, and improving strength and durability

Active Publication Date: 2022-04-12
JIANGSU EASTTRANS INTELLIGENT CONTROL TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]In addition, due to its own characteristics, the cement-stabilized macadam base is prone to dry shrinkage cracks and temperature shrinkage cracks when the temperature and humidity change, and these cracks will Seriously affect the safety of transportation and the comfort of passengers, especially groundwater will wash away the roadbed, affecting the overall stability and durability of the road

Method used

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  • Semi-rigid base material and construction process
  • Semi-rigid base material and construction process
  • Semi-rigid base material and construction process

Examples

Experimental program
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Effect test

Embodiment 1

[0044] The present embodiment provides a semi-rigid base material, comprising 100 parts by weight of crushed pebbles, 4.2 parts of crack-resistant silica-alumina-based cementitious material and 5 parts of water.

[0045] (1) Broken pebbles: Broken pebbles are the pebble base materials mined in the river. After cleaning, they are processed into 15mm or more, 10-15mm, 5-10mm, 3- 5 grades of aggregates of 5mm and 0-3mm, the white particle content of the above-mentioned pebble base material is 6%, and the synthetic gradation of broken pebbles is shown in Table 1, and the quality of aggregates of 3 grades above 15mm, 10-15mm, and 5-10mm The test results are shown in Table 2, and the quality of the test results for the 2-grade aggregates of 3-5mm and 0-3mm are shown in Table 3.

[0046] Table 1 Synthetic gradation of the broken pebbles of Example 1

[0047]

[0048] Table 2 The quality test results of 3 grades of aggregates above 15mm, 10-15mm, and 5-10mm in Example 1

[0049] ...

Embodiment 2

[0060] The present embodiment provides a semi-rigid base material, comprising 100 parts by weight of crushed pebbles, 4.2 parts of crack-resistant silica-alumina-based cementitious material and 5 parts of water.

[0061] (1) Broken pebbles: Broken pebbles are the pebble base materials mined in the river. After cleaning, they are processed into 15mm or more, 10-15mm, 5-10mm, 3- 5-grade aggregates of 5mm and 0-3mm, the white particle content of the above-mentioned pebble base material is 7%, and the synthetic gradation of broken pebbles meets the requirements of Table 4, and the 3-grade aggregates of 15mm or more, 10-15mm, and 5-10mm meet the requirements of Table 4. Table 5 requirements, 3-5mm and 0-3mm grade 2 aggregates meet the requirements of Table 6.

[0062] The synthetic gradation of the broken pebble of table 4 embodiment 2

[0063]

[0064] Table 5 Quality requirements for aggregates of 15mm above, 10-15mm, and 5-10mm in Example 2

[0065]

[0066] Table 6 The ...

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Abstract

The invention discloses a semi-rigid base material and a construction process. Wherein the semi-rigid base material comprises the following components in parts by weight: 100 parts of aggregate, 3.0-5.0 parts of an anti-cracking silicon-aluminum-based cementing material and 4.0-6.5 parts of water, the aggregate is pebbles, the surfaces of the pebbles are clean, a large amount of chippings, needle-sheet-shaped particles and the like are not generated, the strength of the pavement can be remarkably improved, and the semi-rigid base material is an environment-friendly material. Meanwhile, the semi-rigid base material obtained by compounding the pebbles and the anti-cracking silicon-aluminum-based cementing material is slightly influenced by changes of environment temperature and humidity, the phenomenon of dry shrinkage of the pavement can be remarkably improved, cracks are reduced, and the strength and durability of the pavement are improved. According to the construction process of the semi-rigid base material, cracks can be reduced, the construction period can be shortened, and remarkable economic benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of road building materials, in particular to a semi-rigid base material and a construction process. Background technique [0002] The asphalt pavement structure of semi-rigid base is generally used in highways in our country, among which the semi-rigid base of cement-stabilized macadam is widely used for its good water stability, frost resistance and high mechanical strength. Cement-stabilized crushed stone raw materials mainly include crushed rocks such as limestone and cement processed from limestone. A certain amount of crushed stones are used as aggregates, and a certain amount of cement and water are used to form mortar to fill the gaps in the aggregates. , formed by paving and rolling according to the principle of embedded extrusion. [0003] In addition, due to its own characteristics, the cement stabilized gravel base is prone to dry shrinkage cracks and temperature shrinkage cracks when the tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00E01C7/30
Inventor 王捷王亚昀王彬彬赵松王鹏
Owner JIANGSU EASTTRANS INTELLIGENT CONTROL TECH GRP CO LTD
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