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Material Design Method of Cement Asphalt Composite Cementitious Mixture Based on Crack Resistance

A technology of cement asphalt and crack resistance, which is applied in the direction of applying stable tension/compression to test material strength, analyze materials, strength characteristics, etc., and can solve the problem of large test volume, insufficient consideration of crack resistance, and insufficient consideration Crack performance requirements and other issues, to achieve the effect of small test volume

Active Publication Date: 2022-05-17
HARBIN INST OF TECH
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Problems solved by technology

When determining the amount of cement and emulsified asphalt, the method of orthogonal test is adopted, and the test amount is relatively large
And in terms of specific design methods, more emphasis is placed on the strength characteristics of cement-asphalt composite cementitious mixtures, but the crack resistance of cement-asphalt composite cementitious mixtures is not fully considered, and in the material design of cement-asphalt composite cementitious Material crack resistance requirements

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  • Material Design Method of Cement Asphalt Composite Cementitious Mixture Based on Crack Resistance
  • Material Design Method of Cement Asphalt Composite Cementitious Mixture Based on Crack Resistance
  • Material Design Method of Cement Asphalt Composite Cementitious Mixture Based on Crack Resistance

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Embodiment Construction

[0038] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings, but it is not limited thereto. Any modification or equivalent replacement of the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention should be covered by the present invention. within the scope of protection.

[0039] The invention provides a material design method of cement-asphalt composite cementitious mixture based on anti-crack performance. The technical characteristics of the design method are mainly reflected in two aspects: one is to propose a two-step design method; the other is in the process of material design In , a direct tensile test method for evaluating the crack resistance of materials based on the reflective crack formation mechanism was proposed, where:

[0040] Two-step design method for the design of cement-asphalt composite cementitious m...

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Abstract

The invention discloses a material design method of a cement-asphalt composite cementing mixture based on crack resistance performance. The method includes the following steps: Step 1, determining the reasonable dosage ratio of cement and emulsified asphalt: Step 1, cement-emulsified asphalt composite cementation Material specimen preparation; Step 2, direct tensile test preparation; Step 3, direct tensile test; Step 4, test result processing; Step 5, determination of the reasonable dosage ratio of cement and emulsified asphalt; Reasonable dosage: Step 6, making cement-asphalt composite cemented mixture specimen; Step 7, strength test; Step 8, determination of reasonable dosage of composite cemented material. The invention fully considers the anti-crack performance of the cement-asphalt composite cemented mixture, and can better exert the ability of the cement-asphalt composite cemented mixture to resist reflection cracks.

Description

technical field [0001] The invention relates to a material design method of a cement-asphalt composite cemented mixture, in particular to a material design method of a cement-asphalt composite cemented mixture based on anti-crack performance. Background technique [0002] Cement-asphalt composite cemented mixture is a composite cemented mixture formed by mixing cement, emulsified asphalt and aggregates of a certain grade, through the hydration of cement and the demulsification and cementation of emulsified asphalt. The cement-asphalt composite cement mixture uses cement and emulsified asphalt to form a composite cement and aggregate for mixing, so it can realize normal temperature construction without heating, and has the advantages of construction technology. At the same time, the cement-asphalt composite cemented mixture uses cement and asphalt as the composite cementing material, which makes the cement-asphalt composite cemented mixture not only have a certain rigidity an...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08G01N3/06G01N3/02G01N1/28G01N1/36C04B28/00
CPCG01N3/08G01N3/06G01N3/02G01N1/28G01N1/36C04B28/00G01N2203/0003G01N2203/0017G01N2203/0298G01N2203/0676G01N2203/0682G01N2001/366C04B24/36C04B14/02Y02A30/30
Inventor 李云良李旭董泽蛟刁万民于立泽宗云翠谭忆秋
Owner HARBIN INST OF TECH
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