阅读说明：本技术 测定混凝土用集料不规则颗粒含量的试验装置及方法 (Test device and method for determining content of irregular particles in aggregate for concrete ) 是由 罗通 徐立斌 何信周 陈尚伟 陈亦苏 周灵 于 2021-08-17 设计创作，主要内容包括：本发明提供了一种测定混凝土用集料不规则颗粒含量的试验装置及方法,该方法包括如下步骤：将待测集料拌合、缩分,获得试验样品；将截锥圆筒放置在平板玻璃的中央,将集料样品以自由下落的方式添至满出筒口,刮平；截锥圆筒向上缓慢提起,集料样品自由坍塌形成堆积体；用3D激光扫描仪扫描堆积体,获得三维扫描模型；测量三维扫描模型的休止角,与匹配模板匹配,确定不规则颗粒含量；传输至数据储存模块储存。本发明综合判断集料中不规则颗粒含量、集料颗粒表面粗糙度对混凝土的影响,使混凝土性能判断指标更多维、准确；操作简便,提高了效率；使用该装置可靠性会逐渐增强。(The invention provides a test device and a method for measuring the content of irregular particles in an aggregate for concrete, wherein the method comprises the following steps: mixing and dividing aggregates to be tested to obtain a test sample; placing a truncated cone cylinder at the center of the flat glass, adding an aggregate sample to a full cylinder outlet in a free-falling mode, and leveling; the truncated cone cylinder is lifted upwards slowly, and the aggregate sample is collapsed freely to form a stack body; scanning the accumulation body by using a 3D laser scanner to obtain a three-dimensional scanning model; measuring the repose angle of the three-dimensional scanning model, matching the repose angle with a matching template, and determining the content of irregular particles; and transmitting the data to a data storage module for storage. The method comprehensively judges the influence of the content of irregular particles in the aggregate and the surface roughness of the aggregate particles on the concrete, so that the performance judgment index of the concrete is more multidimensional and accurate; the operation is simple and convenient, and the efficiency is improved; the reliability will gradually increase with this device.)

1. The utility model provides a survey test device of irregular granule content of gathering materials for concrete which characterized in that: the system comprises a 3D scanner, an intelligent data processing module, a matching comparison database, a data transmission unit and a data storage module;

the 3D scanner is used for scanning the test concrete to generate a three-dimensional scanning model;

the matching comparison database stores a plurality of matching templates, and the matching templates contain data of aggregate types, particle sizes, irregular particle contents and repose angles;

the intelligent data processing module is used for measuring the angle of repose of the three-dimensional scanning model, matching the three-dimensional scanning model with the matching template based on the type and the particle size grade of the aggregate, and determining the content of irregular particles;

the data transmission unit transmits the three-dimensional scanning model, the aggregate type, the particle size, the data of the irregular particle content and the test conditions to the data storage module for storage through a wireless network or a wired network.

2. A test apparatus for determining the irregular particle content of an aggregate for concrete according to claim 1, wherein: the precision of the three-dimensional scanning model generated by the 3D scanner is not lower than 0.1 mm.

3. A test apparatus for determining the irregular particle content of an aggregate for concrete according to claim 1, wherein: after the intelligent data processing module is used for measuring the angle of repose of the three-dimensional scanning model, the content of uneven particles can be manually input, a matching template is formed based on the type and the particle size grade of the aggregate, and the matching template is input into a matching comparison database for storage.

4. A test method for measuring the content of irregular particles in aggregate for concrete using the test apparatus for measuring the content of irregular particles in aggregate for concrete according to any one of claims 1 to 3, characterized in that: comprises the following steps of (a) carrying out,

step one, uniformly mixing aggregate to be tested, and performing at least two times of division according to a quartering method to obtain a test sample;

secondly, placing the truncated cone cylinder in the center of the flat glass, adding the aggregate sample to the full cylinder outlet from the cylinder opening of the truncated cone cylinder in a free-falling mode, and scraping the sample to be flush with the cylinder opening by using a scraping ruler;

step three, slowly lifting the truncated cone cylinder vertically upwards, wherein the aggregate sample can freely collapse due to the action of gravity, and a conical accumulation body is formed on the plate glass;

scanning the accumulation body by using a 3D scanner to obtain a three-dimensional scanning model;

measuring the angle of repose of the three-dimensional scanning model by the intelligent data processing module, matching the three-dimensional scanning model with a matching template based on the type and the particle size grade of the aggregate, and determining the content of irregular particles;

and step six, transmitting the three-dimensional scanning model, the aggregate type, the particle size, the data of the irregular particle content and the test conditions to a data storage module for storage through a data transmission unit.

5. A test method for determining the irregular particle content of an aggregate for concrete according to claim 4, wherein: the method is adopted to measure the content of irregular particles of the coarse aggregate.

6. A test method for determining the irregular particle content of an aggregate for concrete according to claim 5, wherein: in the third step, the truncated cone cylinder has the size of 100mm of upper opening diameter, 200mm of lower opening diameter and 300mm of cylinder height.

7. A test method for determining the irregular particle content of an aggregate for concrete according to claim 4, wherein: the method is adopted to measure the content of irregular particles of the fine aggregate.

8. A test method for determining the irregular particle content of an aggregate for concrete according to claim 7, wherein: in the third step, the truncated cone cylinder has the size of 50mm of upper opening diameter, 100mm of lower opening diameter and 155mm of cylinder height.

9. A test method for determining the irregular particle content of an aggregate for concrete according to claim 4, wherein: the fifth step, the method for measuring the angle of repose of the three-dimensional scanning model comprises the following steps of firstly measuring the size of the three-dimensional scanning model according to the formula: tan θ is a stack height/stack radius, θ is an angle of repose, and the angle of repose is determined.

10. A test method for determining the irregular particle content of an aggregate for concrete according to claim 4, wherein:

and step five, when new aggregates with different types and particle size parameters are encountered or the measurement result is not in accordance with the reality, the content of the uneven particles is manually input, a matching template is formed based on the types and particle size grades of the aggregates, and the matching template is input into a matching contrast database for storage.

Technical Field

The invention relates to the technical field of building material detection; in particular to a test device and a method for measuring the content of irregular particles in aggregate for concrete.

Background

High-strength high-performance concrete is increasingly applied to high-rise buildings. The problems of concrete in conveying are more and more, and along with the improvement of the strength grade of the concrete, the probability that accidents such as pipe blockage, pipe explosion and the like occur due to the problems of the workability of the concrete is increased.

The content of irregular particles in the concrete aggregate has a great influence on the workability of high-strength concrete, and the currently common simple method for determining the content of the irregular particles in the aggregate comprises the following steps: for fine aggregate, a detection method is specified in appendix A of JG/T568-2019 for high-performance concrete; however, the method is long in time consumption and low in detection efficiency, generally only sampling detection is carried out, and the influence of the roughness of the fine aggregate particles on the concrete cannot be integrally judged. For coarse aggregate, a gauge method is generally used; the calibration method is accurate in coarse aggregate test result, but consumes long time, and the influence of the coarse aggregate particle roughness on the concrete cannot be integrally judged.

Chinese patent publication No. CN102818753A provides a method for determining the content of irregular particle shapes in concrete coarse aggregates, which comprises the following steps: sampling, namely screening by using a set of square-hole sieves with various specifications to obtain different particle sizes, and then weighing a certain number of samples according to the maximum particle size; preparing a discriminator, dividing regular aggregate and irregular aggregate areas on a steel plate, and marking scales; inspecting, inspecting one by one, and selecting irregular particles; and weighing and calculating the irregular particle content. The method belongs to a gauge method, is the current mainstream experimental method, although the detection result is more accurate, a large amount of time is spent on sampling and testing, and the result cannot be quickly obtained under some engineering conditions; moreover, the effect of the irregular particle content on the concrete is different under different smoothness of the aggregate particles, and the method cannot comprehensively judge the effect.

Disclosure of Invention

In order to solve the technical problems, the invention provides a test device and a method for measuring the content of irregular particles in an aggregate for concrete.

The invention is realized by the following technical scheme.

The invention provides a test device for measuring the content of irregular particles in aggregate for concrete, which comprises a 3D scanner, an intelligent data processing module, a matching comparison database, a data transmission unit and a data storage module, wherein the intelligent data processing module is used for processing the data of the aggregate;

the 3D scanner is used for scanning the test concrete to generate a three-dimensional scanning model;

the matching comparison database stores a plurality of matching templates, and the matching templates contain data of aggregate types, particle sizes, irregular particle contents and repose angles;

the intelligent data processing module is used for measuring the angle of repose of the three-dimensional scanning model, matching the three-dimensional scanning model with the matching template based on the type and the particle size grade of the aggregate, and determining the content of irregular particles;

the data transmission unit transmits the three-dimensional scanning model, the aggregate type, the particle size, the data of the irregular particle content and the test conditions to the data storage module for storage through a wireless network or a wired network.

The precision of the three-dimensional scanning model generated by the 3D scanner is not lower than 0.1 mm.

After the intelligent data processing module is used for measuring the angle of repose of the three-dimensional scanning model, the content of uneven particles can be manually input, a matching template is formed based on the type and the particle size grade of the aggregate, and the matching template is input into a matching comparison database for storage.

The experimental conditions comprise test time, environment temperature and humidity and test place.

The invention also provides a test method for measuring the content of the irregular particles in the aggregate for concrete by adopting the test device for measuring the content of the irregular particles in the aggregate for concrete, which comprises the following steps:

step one, uniformly mixing aggregate to be tested, and performing at least two times of division according to a quartering method to obtain a test sample;

secondly, placing the truncated cone cylinder in the center of the flat glass, adding the aggregate sample to the full cylinder outlet from the cylinder opening of the truncated cone cylinder in a free-falling mode, and scraping the sample to be flush with the cylinder opening by using a scraping ruler;

step three, slowly lifting the truncated cone cylinder vertically upwards, wherein the aggregate sample can freely collapse due to the action of gravity, and a conical accumulation body is formed on the plate glass;

scanning the accumulation body by using a 3D scanner to obtain a three-dimensional scanning model;

measuring the angle of repose of the three-dimensional scanning model by the intelligent data processing module, matching the three-dimensional scanning model with a matching template based on the type and the particle size grade of the aggregate, and determining the content of irregular particles;

and step six, transmitting the three-dimensional scanning model, the aggregate type, the particle size, the data of the irregular particle content and the test conditions to a data storage module for storage through a data transmission unit.

The method is adopted to measure the content of irregular particles of the coarse aggregate.

In the third step, the truncated cone cylinder has the size of 100mm of upper opening diameter, 200mm of lower opening diameter and 300mm of cylinder height.

The method is adopted to measure the content of irregular particles of the fine aggregate.

In the third step, the truncated cone cylinder has the size of 50mm of upper opening diameter, 100mm of lower opening diameter and 155mm of cylinder height.

The fifth step, the method for measuring the angle of repose of the three-dimensional scanning model comprises the following steps of firstly measuring the size of the three-dimensional scanning model according to the formula: tan θ is a stack height/stack radius, θ is an angle of repose, and the angle of repose is determined.

And step five, when new aggregates with different types and particle size parameters are encountered or the measurement result is not in accordance with the reality, the content of the uneven particles is manually input, a matching template is formed based on the types and particle size grades of the aggregates, and the matching template is input into a matching contrast database for storage.

The invention has the beneficial effects that:

compared with the prior art, the invention has the following advantages: (1) the method has the advantages that parameters such as aggregate types and particle sizes are distinguished to carry out angle of repose matching respectively, the influence of irregular particle content in aggregates and the surface roughness of the aggregate particles on concrete is comprehensively judged, and the performance judgment index of the concrete is more multidimensional and accurate; (2) the operation is simple and convenient, the experimental conclusion can be rapidly obtained, and the efficiency is improved; (3) the data storage module is used for storing the experiment result and the complete experiment condition, so that the experiment supervision and tracing are facilitated, and the reliability is improved; (4) the reliability of the invention will be gradually enhanced when the invention is used for a long time.

Drawings

Fig. 1 is a schematic structural view of the present invention.

FIG. 2 is a process flow diagram of the present invention.

Detailed Description

The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

As shown in fig. 1:

the invention provides a test device for measuring the content of irregular particles in aggregate for concrete, which comprises a 3D scanner, an intelligent data processing module, a matching comparison database, a data transmission unit and a data storage module, wherein the intelligent data processing module is used for processing the data of the aggregate;

the 3D scanner is used for scanning the test concrete to generate a three-dimensional scanning model;

the matching comparison database stores a plurality of matching templates, and the matching templates contain data of aggregate types, particle sizes, irregular particle contents and repose angles;

the intelligent data processing module is used for measuring the angle of repose of the three-dimensional scanning model, matching the three-dimensional scanning model with the matching template based on the type and the particle size grade of the aggregate, and determining the content of irregular particles;

the data transmission unit transmits the three-dimensional scanning model, the aggregate type, the particle size, the data of the irregular particle content and the test conditions to the data storage module for storage through a wireless network or a wired network.

Compared with the prior art, the invention has the following advantages: (1) the method has the advantages that parameters such as aggregate types and particle sizes are distinguished to carry out angle of repose matching respectively, the influence of irregular particle content in aggregates and the surface roughness of the aggregate particles on concrete is comprehensively judged, and the performance judgment index of the concrete is more multidimensional and accurate; (2) the operation is simple and convenient, the experimental conclusion can be rapidly obtained, and the efficiency is improved; (3) the data storage module is used for storing the experiment result and the complete experiment condition, so that the experiment supervision and tracing are facilitated, and the reliability is improved.

The 3D scanner is in signal connection with the intelligent data processing module, the intelligent data processing module is in signal connection with the data transmission unit and the matching comparison database respectively, and the data transmission unit is in signal connection with the data storage module.

The precision of the three-dimensional scanning model generated by the 3D scanner is not lower than 0.1 mm. The method is convenient to obtain high-quality images, and the accuracy of evaluating indexes such as concrete cohesiveness, water retention and the like is ensured.

After the intelligent data processing module is used for measuring the angle of repose of the three-dimensional scanning model, the content of uneven particles can be manually input, a matching template is formed based on the type and the particle size grade of the aggregate, and the matching template is input into a matching comparison database for storage. When new aggregates with different types and particle size parameters are encountered, the richness of matched templates is increased conveniently; when the measurement result is inconsistent with the reality, the matching template is convenient to correct, and the reliability of the device for long-time use is improved.

The experimental conditions comprise test time, environment temperature and humidity and test place. The test supervision and the source tracing are facilitated, and the reliability is improved.

As shown in fig. 2:

the invention also provides a test method for measuring the content of the irregular particles in the aggregate for concrete by adopting the test device for measuring the content of the irregular particles in the aggregate for concrete, which comprises the following steps:

step one, uniformly mixing aggregate to be tested, and performing at least two times of division according to a quartering method to obtain a test sample;

secondly, placing the truncated cone cylinder in the center of the flat glass, adding the aggregate sample to the full cylinder outlet from the cylinder opening of the truncated cone cylinder in a free-falling mode, and scraping the sample to be flush with the cylinder opening by using a scraping ruler;

step three, slowly lifting the truncated cone cylinder vertically upwards, wherein the aggregate sample can freely collapse due to the action of gravity, and a conical accumulation body is formed on the plate glass;

scanning the accumulation body by using a 3D scanner to obtain a three-dimensional scanning model;

measuring the angle of repose of the three-dimensional scanning model by the intelligent data processing module, matching the three-dimensional scanning model with a matching template based on the type and the particle size grade of the aggregate, and determining the content of irregular particles;

and step six, transmitting the three-dimensional scanning model, the aggregate type, the particle size, the data of the irregular particle content and the test conditions to a data storage module for storage through a data transmission unit.

The method is adopted to measure the content of irregular particles of the coarse aggregate. The content of the coarse aggregate is directly obtained through intelligent matching, the efficiency is improved, and the influence of the content of irregular particles in the aggregate and the surface roughness of the aggregate particles on the concrete can be comprehensively judged, so that the judgment index of the concrete performance is more multidimensional and accurate. The coarse aggregate is broken stone aggregate.

In the third step, the truncated cone cylinder has the size of 100mm of upper opening diameter, 200mm of lower opening diameter and 300mm of cylinder height.

The method is adopted to measure the content of irregular particles of the fine aggregate. The problem of long time consumption for measuring the content of the irregular particles in the fine aggregate is solved, and the efficiency of measuring the content of the irregular particles is improved. The fine aggregate is sand.

In the third step, the truncated cone cylinder has the size of 50mm of upper opening diameter, 100mm of lower opening diameter and 155mm of cylinder height.

The fifth step, the method for measuring the angle of repose of the three-dimensional scanning model comprises the following steps of firstly measuring the size of the three-dimensional scanning model according to the formula: tan θ is a stack height/stack radius, θ is an angle of repose, and the angle of repose is determined. The angle of repose is calculated by sizing, reducing the complexity of the procedure.

And step five, when new aggregates with different types and particle size parameters are encountered or the measurement result is not in accordance with the reality, the content of the uneven particles is manually input, a matching template is formed based on the types and particle size grades of the aggregates, and the matching template is input into a matching contrast database for storage. The richness of the matched template is increased or the template is corrected, and the reliability of the device for long-time use is improved.