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Proportioning method of super-large-mixing-ratio fly ash cement stable base material and vibration stirrer

A technology of fly ash cement and base material, which is applied in the direction of cement mixing device, cement production, analysis materials, etc.

Pending Publication Date: 2020-10-16
LONGJIAN ROAD & BRIDGE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The traditional method of determining the amount of cement in the cement-stabilized base material is the EDTA titration method. The quality detection parameters of the traditional cement-stabilized base material are only the determination of the cement content. This method is very one-sided, because the cement content only determines the quality of the cement-stabilized base material. Part of the reason, and the "water-binder ratio" can more comprehensively reflect the quality of the cement-stabilized base material

Method used

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  • Proportioning method of super-large-mixing-ratio fly ash cement stable base material and vibration stirrer
  • Proportioning method of super-large-mixing-ratio fly ash cement stable base material and vibration stirrer
  • Proportioning method of super-large-mixing-ratio fly ash cement stable base material and vibration stirrer

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Embodiment 1

[0068] A method for proportioning super-large-volume fly ash cement stabilized base materials, the method comprising the following steps:

[0069] Step 1: The gradation of the cement-stabilized base material should be based on the principle of dense skeleton and combined with the minimum void ratio to select the gradation range of the cement-stabilized base material;

[0070] Step 2: Determination of the optimal dosage of polycarboxylate high-performance admixture;

[0071] Step 3: Use a vibrating mixer to stir the cement to stabilize the base material and do a standard compaction test to determine the best moisture content and maximum density for the unconfined compressive strength test piece;

[0072] Step 4: Based on the optimum moisture content obtained in Step 3 and the corresponding maximum dry density, mold the unconfined compressive strength test piece according to the maximum dry density of 98%, and perform the unconfined compressive strength test;

[0073] Step 5: D...

Embodiment 2

[0075] According to the super-large-volume fly ash cement stabilized base material proportioning method described in Example 1, the specific process of the first step is: the gradation of the cement stabilized base material should be based on a compact skeleton and combined with a minimum void ratio In principle, multi-graded 19mm-26.5mm particle size aggregates are used to form the skeleton of the stress system, 9.5mm-19mm particle size aggregates are used to fill the gaps of the former, and 4.75mm-9.5mm particle size aggregates are used to fill 9.5mm-19mm particle size aggregates. The gaps formed by aggregates with a particle size of 0mm-4.75mm are filled with aggregates with a particle size of 0mm-4.75mm, and the gaps formed by aggregates with a particle size of 9.5mm-16mm are filled. ash) organically bond the aforementioned multi-graded aggregates together to form an integral pavement base cement stabilized base material, which mainly bears complex loads from road traffic f...

Embodiment 3

[0077] According to the super large amount of fly ash cement stabilized base material proportioning method described in embodiment 1 or 2, the specific process of described step 2 is: first do the compaction test of the cement stabilized base material without adding water reducing agent, and find Calculate the optimum water content, and determine the water consumption of the cement-stabilized base material mixed with the water-reducing agent according to the water-reducing rate of the high-performance water-reducing agent, and then do a compaction test to obtain the optimum water content of the cement-stabilized base material with the admixture And the maximum dry density, at this time, the dosage of high-performance superplasticizer is the optimal dosage, and the optimal dosage is 0.6%-1.2%.

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Abstract

The invention discloses a proportioning method of a super-large-mixing-ratio fly ash cement stable base material and a vibration stirrer. An EDTA titration method is adopted in a traditional method for measuring the cement mixing amount in a cement stabilized base material. The method comprises the following steps: selecting a grading range of a cement stabilized base material, determining the optimal mixing amount of the composite polycarboxylate high-performance admixture, determining the optimal moisture content and the maximum density of the unconfined compressive strength test piece, forming an unconfined compressive strength test piece according to 98% of the maximum dry density on the basis of the optimal moisture content and the corresponding maximum dry density obtained in the step 3, performing an unconfined compressive strength test, and detecting the actual water content and the mixing amount of cement and fly ash of the cement stabilized base material, wherein the cement stabilized base material is newly mixed with the optimal water content and the maximum dry density. The method is used for proportioning and stirring the super-large-mixing-amount fly ash cement stablebase material.

Description

Technical field: [0001] The invention relates to a method for mixing super-large-volume fly ash cement to stabilize base materials and a vibrating mixer. Background technique: [0002] The traditional method of determining the amount of cement in the cement-stabilized base material is the EDTA titration method. The quality detection parameters of the traditional cement-stabilized base material are only the determination of the cement content. This method is very one-sided, because the cement content only determines the quality of the cement-stabilized base material. Part of the reason, while the "water-binder ratio" can more comprehensively reflect the quality of cement-stabilized base materials. Invention content: [0003] The object of the present invention is to provide a method for proportioning super-large-volume fly ash cement to stabilize base materials and a vibrating mixer. [0004] Above-mentioned purpose realizes by following technical scheme: [0005] A metho...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B7/26B28C5/48B28C5/00G01N5/04
CPCC04B28/00C04B7/26B28C5/003B28C5/485G01N5/045G01N5/04C04B2201/50C04B2111/00017C04B2103/302C04B2103/22C04B2103/304Y02P40/10
Inventor 朴志海姚瑞珊陈彦君孙明刚池波
Owner LONGJIAN ROAD & BRIDGE
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