CN113998953B - Sample for capability verification of building material non-combustibility test device - Google Patents
Sample for capability verification of building material non-combustibility test device Download PDFInfo
- Publication number
- CN113998953B CN113998953B CN202111388604.4A CN202111388604A CN113998953B CN 113998953 B CN113998953 B CN 113998953B CN 202111388604 A CN202111388604 A CN 202111388604A CN 113998953 B CN113998953 B CN 113998953B
- Authority
- CN
- China
- Prior art keywords
- sample
- building material
- capability
- parts
- benzoic acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00991—Uses not provided for elsewhere in C04B2111/00 for testing
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- Combustion & Propulsion (AREA)
- Molecular Biology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a sample for verifying the capability of a building material incombustibility testing device, which is characterized by comprising the following components in parts by weight: mainly made of ordinary portland cement and benzoic acid. Adding water into the raw materials, mixing, stirring, and molding with a mold to obtain the final product with height of 50 + -1 mm and diameter of 45 mm 0 ‑1 mm cylinder, and then cured. The sample for capability verification of the building material non-combustibility test device provided by the invention has the characteristic of controllable combustion heat value, so that the stable temperature rise is realized under the conditions of specified environmental conditions, shapes and volumes, and the sample has excellent repeatability and reproducibility. The sample has the same structure with the building material incombustibility test sample, and can be used as a capability verification sample to verify the comprehensive detection capability of a laboratory.
Description
Technical Field
The invention relates to the technical field of capability verification, in particular to a sample for capability verification of a building material incombustibility test device.
Background
The ability verification is to evaluate the ability of the participants according to a preset criterion by using comparison among laboratories. The capability verification is used as an important external quality evaluation activity, is an important means for monitoring the detection capability of the laboratory, is beneficial to identifying the difference between the laboratory and other laboratories and finding system problems existing in the detection process of the laboratory, and therefore the detection technical capability is continuously improved and the quality assurance level is promoted to be improved. The result of capability verification is effective proof of laboratory technical capability, and provides basis for enhancing customer confidence and selecting, evaluating and approving a capable laboratory for management departments, approval organizations, customers and other interested parties.
Since the sample for capability verification must have high stability and reproducibility, it is difficult to realize high stability and reproducibility of combustion data of the sample and to provide different temperature rise values according to experimental requirements, and thus, checking the sample during a period that does not satisfy the requirements so far has not been realized, and it has not been possible to objectively evaluate comprehensive capabilities of a laboratory. Therefore, it is difficult to ensure the accuracy and reliability of the data of the sample detected by the incombustibility test apparatus. Whether the flame retardant performance of the detected building material meets the national relevant standards or not is difficult to guarantee.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a sample for verifying the capability of a building material non-combustibility testing device, which has stable temperature rise, excellent repeatability and reproducibility and can be used for replacing a test sample to verify the comprehensive capability of a laboratory.
In order to realize the purpose, the invention adopts the following technical scheme: a sample for capability verification of a building material incombustibility test apparatus, characterized in that: mainly made of ordinary portland cement and benzoic acid.
Adding water into the raw materials, mixing, stirring, and molding with a die to obtain a product with height of 50 + -1 mm and diameter of 45 mm 0 -1 mm cylinder, then curing. The sample of the present invention is prepared according to the requirements of 5.1 in GB5464-2010 on the sample, and is consistent with the structure of the sample to be detected.
The benzoic acid has stable heat value, is mixed with the ordinary portland cement to prepare a standard sample, has a property structure close to that of a building material, has stable heat value, and can realize stable temperature rise under the same benzoic acid content by adjusting the addition amount of the benzoic acid. The amount of benzoic acid added was different and the temperature rise was different. That is, different amounts of benzoic acid can be added to achieve different temperature rises, and the present invention is used for capacity verification and only needs a stable temperature rise with a stable calorific value.
In the scheme, the composite material also comprises hydroxypropyl methyl cellulose and polymer condensed rubber powder. The addition of hydroxypropyl methyl cellulose ensures the strength after molding, and the polymer condensed rubber powder provides certain adhesiveness. The propyl methyl cellulose and the condensed rubber powder of the polymer have low heat value and do not influence the heat value stability of the benzoic acid.
In the scheme, the weight parts of the raw materials are as follows: 90 to 120 portions of ordinary portland cement, 5 to 30 portions of benzoic acid, 0.05 to 0.1 portion of hydroxypropyl methyl cellulose and 0.1 to 0.5 portion of polymer condensed rubber powder. Different stable heat values can be obtained by adjusting the amounts of the portland cement and the benzoic acid, so that different temperature rises are realized. The final purpose of the invention is to ensure the repeatability and reproducibility of temperature rise. As long as stable temperature rise can be obtained, the device can be used for verifying the capability of the building material non-combustibility test device no matter what specific temperature is raised.
In the scheme, the composite material is prepared from the following raw materials in parts by weight: 120 parts of ordinary portland cement, 5 parts of benzoic acid, 0.06 part of hydroxypropyl methyl cellulose and 0.2 part of polymer condensed rubber powder. Reproducibility test results: 2.3 percent.
In the scheme, the composite material is prepared from the following raw materials in parts by weight: 120 parts of ordinary portland cement, 10 parts of benzoic acid, 0.06 part of hydroxypropyl methyl cellulose and 0.2 part of polymer condensed rubber powder. Reproducibility test results: 0.6 percent.
Has the advantages that: the sample for verifying the capability of the building material non-combustibility test device has the characteristic of controllable combustion heat value, so that the stable temperature rise is realized under the conditions of specified environmental conditions, shapes and volumes, and the sample has excellent repeatability and reproducibility. The sample has the same structure as the building material incombustibility test sample, and can be used for replacing a test sample to verify the comprehensive capacity of a laboratory.
Detailed Description
The present invention will be described in further detail below by way of specific embodiments:
example 1
The sample is prepared from 120 parts of ordinary portland cement, 5 parts of benzoic acid, 0.06 part of hydroxypropyl methyl cellulose and 0.2 part of polymer condensed rubber powder by adding water into various raw materials, uniformly mixing and stirring (the amount of the added water is convenient for forming), pressing and forming into cylindrical samples with the height of 50 +/-3 mm and the diameter of 45 +/-2 mm through a die, preparing 100 samples in total, and maintaining for 48 days.
According to the test method specified in GB/T5464-2010, 3 incombustibility test devices with different models which are qualified through calibration are used for carrying out incombustibility tests, and the repeatability and reproducibility test results are as follows:
the equipment 1: the device name: model of incombustibility test furnace: JCB-2
| Number of times | Measured temperature rise (. Degree. C.) | Residual error | Squared value of residual error |
| 1 | 12.5 | 0.3 | 0.09 |
| 2 | 12.1 | -0.1 | 0.01 |
| 3 | 12.5 | 0.3 | 0.09 |
| 4 | 12.6 | 0.4 | 0.16 |
| 5 | 13.5 | 1.3 | 1.69 |
| 6 | 12.0 | -0.2 | 0.04 |
| 7 | 11.3 | -0.9 | 0.81 |
| 8 | 12.7 | 0.5 | 0.25 |
| 9 | 10.5 | -1.7 | 2.89 |
| 10 | 12.6 | 0.4 | 0.16 |
| Is totaled | 122.3 | Sum of squares | 6.19 |
| Mean value of | 12.2 | ||
| Repeatability | 0.8 |
The device 2: device name: incombustibility test furnace type: JL-JCB-3
The device 3: device name: model number of incombustibility test apparatus: TTech-GBT5464
| Number of times | Measured temperature rise (. Degree. C.) | Residual error | Squared value of residual error |
| 1 | 13.6 | 0.5 | 0.25 |
| 2 | 12.8 | -0.3 | 0.09 |
| 3 | 12.3 | -0.8 | 0.64 |
| 4 | 12.9 | -0.2 | 0.04 |
| 5 | 13.7 | 0.6 | 0.36 |
| 6 | 13.2 | 0.1 | 0.01 |
| 7 | 12.6 | -0.5 | 0.25 |
| 8 | 13.1 | 0.0 | 0 |
| 9 | 13.0 | -0.1 | 0.01 |
| 10 | 13.5 | 0.4 | 0.16 |
| Total up to | 130.7 | Sum of squares | 1.81 |
| Mean value of | 13.1 | ||
| Repeatability of | 0.5 |
The three sets of repeatability test results are respectively: the reproducibility test results at 0.8 ℃, 0.5 ℃ and 0.5 ℃ are as follows: 2.3 percent, which shows that the repeatability and the reproducibility are good, and the sample can be used as a capability verification sample to verify the comprehensive detection capability of a laboratory.
Example 2
The sample is prepared from 120 parts of ordinary portland cement, 10 parts of benzoic acid, 0.06 part of hydroxypropyl methyl cellulose and 0.2 part of polymer condensed rubber powder by adding water into various raw materials, uniformly mixing and stirring (the amount of the added water is convenient for forming), pressing and forming into cylindrical samples with the height of 50 +/-3 mm and the diameter of 45 +/-2 mm through a die, preparing 100 samples in total, and maintaining for 48 days.
According to the test method specified in GB/T5464-2010, 3 incombustibility test devices with different models which are qualified through calibration are used for carrying out incombustibility tests, and the repeatability and reproducibility test results are as follows:
the device 1: the device name: model of incombustibility test furnace: the results of the JCB-2 reproducibility test are as follows
| Times (20) | Measured temperature rise (. Degree. C.) | Residual error | Squared value of residual error |
| 1 | 79.9 | 0.2 | 0.04 |
| 2 | 81.3 | 1.6 | 2.56 |
| 3 | 81.6 | 1.9 | 3.61 |
| 4 | 79.8 | 0.1 | 0.01 |
| 5 | 77.9 | -1.8 | 3.24 |
| 6 | 78.8 | -0.9 | 0.81 |
| 7 | 78.9 | -0.8 | 0.64 |
| 8 | 80.1 | 0.4 | 0.16 |
| 9 | 79.5 | -0.2 | 0.04 |
| 10 | 79.1 | -0.6 | 0.36 |
| Is totaled | 796.9 | Sum of squares | 11.47 |
| Mean value of | 79.7 | ||
| Repeatability of | 1.1 |
The device 2: the device name: model of incombustibility test furnace: JL-JCB-3
| Times (10) | Measured temperature rise (. Degree. C.) | Residual error | Squared value of residual error |
| 1 | 81.9 | 0.8 | 0.64 |
| 2 | 82.1 | 1.0 | 1 |
| 3 | 80.9 | -0.2 | 0.04 |
| 4 | 81.1 | 0.0 | 0 |
| 5 | 80.5 | -0.6 | 0.36 |
| 6 | 81.6 | 0.5 | 0.25 |
| 7 | 81.3 | 0.2 | 0.04 |
| 8 | 80.1 | -1.0 | 1 |
| 9 | 81.0 | -0.1 | 0.01 |
| 10 | 80.3 | -0.8 | 0.64 |
| Total up to | 810.8 | Sum of squares | 3.98 |
| Mean value of | 81.1 | ||
| Repeatability of | 0.7 |
The device 3: the device name: incombustibility test furnace type: TTech-GBT5464
The three sets of repeatability test results are respectively: reproducibility test results at 1.1 ℃, 0.7 ℃, 1.1 ℃:0.6 percent, which shows good repeatability and reproducibility, and can be used as a capability verification sample to verify the comprehensive detection capability of a laboratory.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. A sample for capability verification of a building material incombustibility test apparatus, characterized in that: is prepared from ordinary portland cement, benzoic acid, hydroxypropyl methylcellulose and polymer condensed rubber powder; the weight parts of the raw materials are as follows: 90 to 120 portions of ordinary portland cement, 5 to 30 portions of benzoic acid, 0.05 to 0.1 portion of hydroxypropyl methyl cellulose and 0.1 to 0.5 portion of polymer condensed rubber powder.
2. The sample for building material incombustibility test apparatus capability verification according to claim 1, characterized by being made of the following raw materials in parts by weight: 120 parts of ordinary portland cement, 5 parts of benzoic acid, 0.06 part of hydroxypropyl methyl cellulose and 0.2 part of polymer condensed rubber powder.
3. The sample for building material incombustibility test apparatus capability verification according to claim 1, characterized by being made of the following raw materials in terms of weight fraction: 120 parts of ordinary portland cement, 10 parts of benzoic acid, 0.06 part of hydroxypropyl methyl cellulose and 0.2 part of polymer condensed rubber powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111388604.4A CN113998953B (en) | 2021-11-22 | 2021-11-22 | Sample for capability verification of building material non-combustibility test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111388604.4A CN113998953B (en) | 2021-11-22 | 2021-11-22 | Sample for capability verification of building material non-combustibility test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113998953A CN113998953A (en) | 2022-02-01 |
| CN113998953B true CN113998953B (en) | 2022-11-04 |
Family
ID=79929776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111388604.4A Active CN113998953B (en) | 2021-11-22 | 2021-11-22 | Sample for capability verification of building material non-combustibility test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113998953B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1081168A (en) * | 1993-07-28 | 1994-01-26 | 北京市建筑工程研究所 | Modified portland cement composite material and application thereof |
| CN107010892A (en) * | 2017-04-07 | 2017-08-04 | 俞家欢 | It is a kind of not disperse fast hard cement-base composite material of rapid hardening and its preparation method and application under water |
| CN109776022B (en) * | 2019-03-07 | 2021-06-11 | 东南大学 | Composite controllable hydration cement-based material and application thereof |
| CN111808649A (en) * | 2020-07-22 | 2020-10-23 | 长沙紫宸科技开发有限公司 | Method for preparing mixed fuel by cooperatively treating hazardous wastes containing organic matters in cement plant |
-
2021
- 2021-11-22 CN CN202111388604.4A patent/CN113998953B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113998953A (en) | 2022-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103196794B (en) | Automatic testing system used for testing fresh mixing performance of concrete | |
| CN113998953B (en) | Sample for capability verification of building material non-combustibility test device | |
| CN110927222A (en) | Asphalt mixture quality evaluation method for quantifying temperature and frequency influence factors | |
| CN110261435A (en) | Method for measuring combustion heat value of thermosetting composite polystyrene board | |
| CN104048760A (en) | Objective ranking method for cotton color levels | |
| CN110618128B (en) | Test bar for rapidly testing concentration of chloride ions in concrete and preparation method and application thereof | |
| CN112067401A (en) | Method for determining strength maintenance age of structural solid concrete | |
| CN106289900B (en) | PVC paste resin glove material tensile strength and elongation at break test method | |
| CN115684278B (en) | Method for measuring polymer content in polymer mortar hardened body | |
| CN109470599B (en) | Method for detecting flow property of hot melt adhesive for flexible flat cable | |
| CN115130179B (en) | Method for determining safety of concrete structure containing steel slag aggregate | |
| WO2023019721A1 (en) | Cross-linking performance consistency characterization method for cross-linked polyethylene 500 kv cable insulation material | |
| CN106370511A (en) | Evaluation and testing method for thermal ageing resistance of thermoplastic test sample | |
| CN113391056A (en) | Method for improving shrinkage cracking performance of cement-based grouting material | |
| CN112485152A (en) | Method for judging river sand quality | |
| CN112633757A (en) | Standard automatic monitoring method and system for inspecting raw materials in production of premixed concrete | |
| CN108536918B (en) | Method and device for determining storage life of resin type adhesive, and electronic device | |
| CN112304807A (en) | Method for rapidly detecting performance of resin anchoring agent | |
| CN111553602A (en) | Method for determining mixing amount of curing material in concrete | |
| CN220104611U (en) | Device for rapidly evaluating shrinkage restraining performance of cement-based material | |
| Huang et al. | Thermal stress restrained specimen test on fiber enhanced asphalt concrete and thermal stress calculation models | |
| CN117074355A (en) | Method for detecting SBS content in modified asphalt by using infrared spectrum technology based on coating method | |
| CN116973541A (en) | Method for detecting maximum thickness of bituminous coal colloid layer and application | |
| CN114371276B (en) | Method for measuring low-temperature performance of emulsified asphalt evaporation residues | |
| CN115436197A (en) | Asphalt low-temperature performance evaluation method based on rheological mechanics theory |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |