Vibration-press-free water stabilizing additive, and preparation and application thereof

An additive and water stabilization technology, applied in instruments, analytical materials, measuring devices, etc., can solve the problems of reducing the relative mass of cement and aggregate, reducing the strength of cement stabilized crushed stone, slow testing process, etc., to reduce construction disturbance, The effect of improving workability and reducing water usage

Inactive Publication Date: 2018-03-30
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

This invention can play a good role in auxiliary compaction by adding expansion agent and shrinkage reducer to the cement-stabilized gravel base, but the amount of shrinkage reducer and expansion agent added is too large, which will reduce the amount of cement and aggregate at the same time. relative mass, reducing the strength of cement-stabilized macadam
[0006] However, the existing maximum dry density test method uses a light compaction method, or a certain compaction instrument to measure the relationship between the water content and the density of the soil under a certain number of compactions, so as to determine the optimal water content of the soil and the corresponding Maximum dry density, the test process is slow and inefficient

Method used

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  • Vibration-press-free water stabilizing additive, and preparation and application thereof
  • Vibration-press-free water stabilizing additive, and preparation and application thereof
  • Vibration-press-free water stabilizing additive, and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A method for measuring the maximum dry density using a pressure-free water stabilization additive:

[0052] S1: Drying: Place aggregates mixed with Zhejiang Huzhou limestone and Zhejiang Maodi basalt in an oven at a temperature of 105°C, and dry for 5 hours until the weight of the aggregate remains constant;

[0053] S2: Preparation of sample: Mix the dried aggregate, cement, water and anti-vibration pressure water stabilization additive (water reducer: expansion agent = 1.5:7.5) in the ratio of 246.9:11.1:12.3:1 in S1 , prepare the vibration-free cement stabilized crushed stone sample, and dry it;

[0054] S3: Preparation of dry mixture: take the dried sample m 1 grams, m 1 = ρ dmax ×2680×(1-0.01×P), mixed with m 2 gram of cement is fully mixed to obtain a uniform dry mixture, the m 2 = m 1 *0.01*p, where:

[0055] ρ dmax The maximum dry density (g / cm3) of the mixture determined for static pressure compaction,

[0056] P is the preset cement dosage (%);

[00...

Embodiment 2

[0071] A method for measuring the maximum dry density using a pressure-free water stabilization additive:

[0072] S1: Drying: Place limestone aggregates of three sizes: 31.5-16mm, 16-5mm, and 5-0mm in an oven at a temperature of 108°C, and dry for 6 hours until the weight of the aggregate remains constant;

[0073] S2: Preparation of sample: Mix the dried aggregate, cement, water and anti-vibration pressure water stabilization additive (water reducer: expansion agent = 2.5:8.5) in the ratio of 202:9.1:10.1:1 in S1 , prepare the vibration-free cement stabilized crushed stone sample, and dry it;

[0074] S3: Preparation of dry mixture: take the dried sample m 1 grams, m 1 = ρ dmax ×2650.72×(1-0.01×P), mixed with m 2 gram of cement is fully mixed to obtain a uniform dry mixture, the m 2 = m 1 *0.01*p, where:

[0075] ρ dmax The maximum dry density (g / cm3) of the mixture determined for static pressure compaction,

[0076] P is the preset cement dosage (%);

[0077] S4: ...

Embodiment 3

[0091] A method for measuring the maximum dry density using a pressure-free water stabilization additive:

[0092] S1: Drying: Place limestone aggregates of three sizes: 31.5-16mm, 16-5mm, and 5-0mm in an oven at a temperature of 108°C, and dry for 6 hours until the weight of the aggregate remains constant;

[0093] S2: Prepare the sample: mix the dried aggregate, cement, water and vibration-free water stabilization additive in S1 according to the proportion, prepare the vibration-free cement stabilized gravel sample, and dry it;

[0094] S3: Preparation of dry mixture: take the dried sample m 1 grams, m 1 = ρ dmax ×2667.5×(1-0.01×P), mixed with m 2 gram of cement is fully mixed to obtain a uniform dry mixture, the m 2 = m 1 *0.01*p, where:

[0095] ρ dmax The maximum dry density (g / cm3) of the mixture determined for static pressure compaction,

[0096] P is the preset cement dosage (%);

[0097] S4: Prepare the wet mixture: fully mix the dry mixture with water, the w...

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Abstract

The invention belongs to the technical field of engineering materials, and particularly relates to a vibration-press-free water stabilizing additive, and a preparation and application thereof. The additive comprises a water reducing agent and an expanding agent, wherein the usage amount of the water reducing agent is 1.5-2.5% of the usage amount of cement, and the usage amount of the expanding agent is 7.5-9.5% of the usage amount of the cement. The vibration-press-free water stabilizing additive prepared by the method provided by the invention has a good vibration-press-free compaction effect; when the additive is used in a maximum dry density testing experiment, the experiment efficiency and accuracy can be improved; in practical applications, the resident disturbing degree of engineering construction can be greatly reduced; and as a semi-rigid base construction technology for a special environment, the additive provided by the invention meets the requirements of constructing an environment-friendly society in China.

Description

technical field [0001] The invention belongs to the technical field of engineering materials, and in particular relates to a vibration-free water stabilization additive and its preparation and application. Background technique [0002] In 2006, the central government officially identified an environment-friendly society as a strategic task in the medium and long-term planning of national economic and social development. An environment-friendly society means that the whole society adopts production methods, lifestyles and consumption methods that are conducive to environmental protection, and establishes a benign interactive relationship between people and the environment. [0003] Starting from the requirements of an environment-friendly society, the principle of "environmental friendliness" should also be observed in the construction of cement-stabilized gravel. Vibratory rollers are generally used for vibratory compaction in the cement-stabilized macadam pavement process....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/24G01N9/36
CPCC04B40/0039G01N9/36C04B2103/0068C04B2103/302
Inventor 赵锡娟毛益佳叶炜李华葛浩赵松潘芳张南童谢韦韦
Owner JIANGSU EASTTRANS INTELLIGENT CONTROL TECH GRP CO LTD
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