CN105527138A - Testing method for strength of cement mortar - Google Patents
Testing method for strength of cement mortar Download PDFInfo
- Publication number
- CN105527138A CN105527138A CN201510873240.7A CN201510873240A CN105527138A CN 105527138 A CN105527138 A CN 105527138A CN 201510873240 A CN201510873240 A CN 201510873240A CN 105527138 A CN105527138 A CN 105527138A
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- CN
- China
- Prior art keywords
- die trial
- sand
- cement
- die
- strength
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Classifications
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- 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
Abstract
The invention relates to the technical field of cement production, specifically to a testing method for the strength of cement mortar. The testing method comprises the following steps: molding of a test piece; maintenance of the test piece; strength determination; and result determination.
Description
Technical field
The present invention relates to technical field of cement production, particularly a kind of Test method for strength of hydraulic cement mortar.
Background technology
Test method for strength of hydraulic cement mortar, also known as cement mortar dry shrinkage test method, in order to evaluate cement mechanical property, namely measures the intensity of cement.The intensity of cement is mixed by 1: 3 cement and normal sand, adds the water of specified quantity, make test specimen, and be carried out in accordance with regulations maintenance, measure compressive strength and the rupture strength of itself 3d and 28d respectively by the method for regulation.According to the strength grade of measurement result determination cement.Traditional assay method is divided into again a lot of classification, needs to adopt to intersect method for measuring to reach stable mensuration effect during general mensuration.
Summary of the invention
The present invention proposes a kind of Test method for strength of hydraulic cement mortar, comprise the steps:
Specimen molding, test piece maintenance, strength detection, result measure; It is characterized in that described specimen molding is further comprising the steps of:
(1) die trial shaping before die trial is cleaned, the template of surrounding and the surface of contact of base should be coated with yellow drier oil, close fit, mortar leakage prevention, inwall even brush one deck machine oil.
(2) weight ratio weighing cement and normal sand is 1: 3, and water cement ratio is 0.5.Often shaping three test specimens need to weigh cement 450g, normal sand 1350g, mixing water amount 225mL.
(3) lower funnel normal sand being poured into stirring machine is stirred; Water is added in agitated kettle, then adds cement, pot is placed on fixed mount, rises to fixed position.After start button, stirring machine stirs by following formula: first stirring at low speed 30s, is evenly added by sand, then high-speed stirred 30s, stop mixing 90s while second 30s starts, then high-speed stirred 60s.Stop, in first 15s mixing, with a rubber scraping, the glue sand on blade and pot wall is scraped in the middle of pot at above-mentioned 90s.
(4) die trial and die sleeve are fixed on plain bumper by jolt ramming.From agitated kettle, get half glue sand with spoon and load die trial, back and forth the bed of material is broadcast flat at die sleeve top along each die cavity with large broadcast feeder vertical rack, then jolt ramming 60 times.Again remaining glue sand is loaded die trial, broadcast flat with little broadcast feeder, then jolt ramming 60 times.
(5) strike off and take off die trial from plain bumper, be placed on platform, with metal ruler with the angle frame of approximate 90 ° one end on die trial mould top, then slowly move to the other end along die trial length direction with horizontal sawing action, once the glue sand exceeding die trial part is scraped off, and floating so that surface will be tried when almost horizontal with same ruler.
(6) be marked at and die trial make marks or adds brief note and indicate test specimen numbering and the test specimen position relative to plain bumper.
Embodiment
A kind of Test method for strength of hydraulic cement mortar, comprises the steps:
Specimen molding, test piece maintenance, strength detection, result measure; It is characterized in that described specimen molding is further comprising the steps of:
(1) die trial shaping before die trial is cleaned, the template of surrounding and the surface of contact of base should be coated with yellow drier oil, close fit, mortar leakage prevention, inwall even brush one deck machine oil.
(2) weight ratio weighing cement and normal sand is 1: 3, and water cement ratio is 0.5.Often shaping three test specimens need to weigh cement 450g, normal sand 1350g, mixing water amount 225mL.
(3) lower funnel normal sand being poured into stirring machine is stirred; Water is added in agitated kettle, then adds cement, pot is placed on fixed mount, rises to fixed position.After start button, stirring machine stirs by following formula: first stirring at low speed 30s, is evenly added by sand, then high-speed stirred 30s, stop mixing 90s while second 30s starts, then high-speed stirred 60s.Stop, in first 15s mixing, with a rubber scraping, the glue sand on blade and pot wall is scraped in the middle of pot at above-mentioned 90s.
(4) die trial and die sleeve are fixed on plain bumper by jolt ramming.From agitated kettle, get half glue sand with spoon and load die trial, back and forth the bed of material is broadcast flat at die sleeve top along each die cavity with large broadcast feeder vertical rack, then jolt ramming 60 times.Again remaining glue sand is loaded die trial, broadcast flat with little broadcast feeder, then jolt ramming 60 times.
(5) strike off and take off die trial from plain bumper, be placed on platform, with metal ruler with the angle frame of approximate 90 ° one end on die trial mould top, then slowly move to the other end along die trial length direction with horizontal sawing action, once the glue sand exceeding die trial part is scraped off, and floating so that surface will be tried when almost horizontal with same ruler.
(6) be marked at and die trial make marks or adds brief note and indicate test specimen numbering and the test specimen position relative to plain bumper.
The step of test piece maintenance, strength detection, result mensuration is once carried out subsequently more successively according to the measuring method of existing standard.
Claims (1)
1. a Test method for strength of hydraulic cement mortar, comprises the steps:
Specimen molding, test piece maintenance, strength detection, result measure; It is characterized in that described specimen molding is further comprising the steps of:
(1) die trial, cleans die trial before shaping, the template of surrounding and the surface of contact of base should be coated with yellow drier oil, close fit, mortar leakage prevention, inwall even brush one deck machine oil;
(2) weigh, the weight ratio of cement and normal sand is 1: 3, and water cement ratio is 0.5.Often shaping three test specimens need to weigh cement 450g, normal sand 1350g, mixing water amount 225mL;
(3) stir, normal sand is poured into the lower funnel of stirring machine; Water is added in agitated kettle, then adds cement, pot is placed on fixed mount, rises to fixed position; After start button, stirring machine stirs by following formula: first stirring at low speed 30s, is evenly added by sand, then high-speed stirred 30s, stop mixing 90s while second 30s starts, then high-speed stirred 60s; Stop, in first 15s mixing, with a rubber scraping, the glue sand on blade and pot wall is scraped in the middle of pot at above-mentioned 90s;
(4) jolt ramming, die trial and die sleeve are fixed on plain bumper, from agitated kettle, get half glue sand with spoon and load die trial, back and forth the bed of material is broadcast flat at die sleeve top along each die cavity with large broadcast feeder vertical rack, then jolt ramming 60 times, again remaining glue sand is loaded die trial, broadcast flat with little broadcast feeder, then jolt ramming 60 times;
(5) strike off, die trial is taken off from plain bumper, be placed on platform, with metal ruler with the angle frame of approximate 90 ° one end on die trial mould top, then slowly move to the other end along die trial length direction with horizontal sawing action, once the glue sand exceeding die trial part is scraped off, and floating so that surface will be tried when almost horizontal with same ruler;
(6) be marked at and die trial make marks or adds brief note and indicate test specimen numbering and the test specimen position relative to plain bumper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510873240.7A CN105527138A (en) | 2015-11-24 | 2015-11-24 | Testing method for strength of cement mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510873240.7A CN105527138A (en) | 2015-11-24 | 2015-11-24 | Testing method for strength of cement mortar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105527138A true CN105527138A (en) | 2016-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510873240.7A Pending CN105527138A (en) | 2015-11-24 | 2015-11-24 | Testing method for strength of cement mortar |
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| CN (1) | CN105527138A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092766A (en) * | 2016-06-02 | 2016-11-09 | 青神鑫统领建材有限公司 | A kind of assay method of low water-cement ratio strength of cement mortar |
| CN111829848A (en) * | 2020-07-22 | 2020-10-27 | 江苏建纬检测股份有限公司 | Plain bumper prepared from test piece for cement mortar strength detection and test piece preparation method |
| CN112643860A (en) * | 2020-12-22 | 2021-04-13 | 湖南中岩建材科技有限公司 | Method for evaluating performance of mold release agent |
-
2015
- 2015-11-24 CN CN201510873240.7A patent/CN105527138A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092766A (en) * | 2016-06-02 | 2016-11-09 | 青神鑫统领建材有限公司 | A kind of assay method of low water-cement ratio strength of cement mortar |
| CN111829848A (en) * | 2020-07-22 | 2020-10-27 | 江苏建纬检测股份有限公司 | Plain bumper prepared from test piece for cement mortar strength detection and test piece preparation method |
| CN111829848B (en) * | 2020-07-22 | 2024-04-12 | 江苏建纬检验检测有限公司 | Compaction table for preparing test piece for cement mortar strength detection and test piece preparation method |
| CN112643860A (en) * | 2020-12-22 | 2021-04-13 | 湖南中岩建材科技有限公司 | Method for evaluating performance of mold release agent |
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| C06 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160427 |