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Detection method for primary indicators of concrete aggregate

A detection method, the technology of concrete aggregate, applied in the direction of using material absorption and weighing, etc., can solve the problems of poor timeliness of concrete aggregate, and achieve the effects of improving timeliness, shortening soaking time, and improving accuracy

Active Publication Date: 2017-09-05
四川省三台县波特兰商品砼有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem of poor timeliness in the detection of concrete aggregates, and provides a method for fusion detection of multiple main indicators of concrete aggregates, that is, one-time experiment, rapid and simple detection of multiple main technologies of concrete aggregates index

Method used

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  • Detection method for primary indicators of concrete aggregate
  • Detection method for primary indicators of concrete aggregate
  • Detection method for primary indicators of concrete aggregate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Concrete aggregate contains different types, mainly including fine aggregate and coarse aggregate, the particle size of fine aggregate is below 4.75mm, and the particle size of coarse aggregate is above 4.75mm. The specific implementation of the present invention will be described below by taking the fine aggregate in the concrete aggregate as an example.

[0039] A method for detecting main indicators of fine aggregates during natural accumulation, the main indicators include water absorption, apparent density, bulk density and bulk void ratio, characterized in that the method comprises the following steps:

[0040] Step 1: Sampling the fine aggregate and drying it for later use;

[0041] The second step: take a 500ml empty glass container bottle and glass flakes, the total mass of the empty glass container bottle and the glass flakes is m 0 , take the fine aggregate dried in the first step, fill the empty glass container bottle to be higher than the glass container b...

Embodiment 2

[0069] On the basis of Example 1, the standing time was 40min, and other conditions were unchanged.

[0070] Table 2 Test results of fine aggregate technical indicators of natural accumulation

[0071]

[0072] It can be seen from Table 2 that when the standing time is 40 minutes, the water absorption correction coefficient of fine aggregate remains unchanged, the water absorption rate increases slightly, the apparent density and bulk density do not change much, and the bulk void ratio does not change.

Embodiment 3

[0074] On the basis of Example 1, the fine aggregate is replaced by coarse aggregate, the temperature of the clear water is 20°C, and other conditions remain unchanged.

[0075] Table 3 Test results of natural stacked coarse aggregate technical indicators

[0076]

[0077] Table 3 shows the test results of the coarse aggregate under the conditions of Example 3. From Table 3, we can see that the static time is 30min, the water temperature is 20°C, the water temperature correction coefficient increases to 0.005, and the water absorption correction coefficient u of coarse aggregate 1 The value increased to 1.0002, weighing m 0 , m 1 , m 2 , m 3 , and m 4 Through the formulas of water absorption, apparent density, bulk density, and bulk void ratio, their specific values ​​can be calculated quickly.

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Abstract

The invention discloses a detection method for primary indicators of concrete aggregate. By simple and reasonable concrete aggregate detection steps, all data needed for calculating primary technical indicators of the concrete aggregate including water absorption, apparent density, stacking density and stacking voidage can be acquired by one complete experiment, the water absorption=(m3+m0-m1)*u1 / (m1-m0)*100%, the apparent density={{(m1-m0) / [(m1+m4-m2-m0)*u1]}-u2}*1000, the stacking density=(m1-m0) / (m4-m0)*1000, the stacking voidage=the stacking density / the apparent density*100%, results are calculated according to the formulas, concrete aggregate standing or soaking time can be greatly shortened, and detection timeliness is further improved.

Description

technical field [0001] The invention relates to a method for detecting the production quality of concrete aggregates, in particular to a method for detecting main indicators of concrete aggregates. Background technique [0002] Many technical indicators of concrete aggregates are the key factors for configuring and adjusting various concrete ratios, so timely and accurate grasp of relevant technical indicators of concrete aggregates is the prerequisite for rational design of various concrete products. However, there are not only many indicators for the daily detection of concrete aggregates, but also a relatively long time for detection according to industry standards. For example, it takes more than 24 hours to dry all concrete aggregates to constant weight, soak for more than 2 hours for the mud content test, soak for more than 24 hours for the mud content test, and need more than 24 hours for the aggregate water absorption test. Let it stand for more than 24 hours, then ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/02
CPCG01N5/02
Inventor 龙凤全
Owner 四川省三台县波特兰商品砼有限公司
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