CN104386956B - Quick setting early strength concrete strength mortar early - Google Patents
Quick setting early strength concrete strength mortar early Download PDFInfo
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- CN104386956B CN104386956B CN201410564266.9A CN201410564266A CN104386956B CN 104386956 B CN104386956 B CN 104386956B CN 201410564266 A CN201410564266 A CN 201410564266A CN 104386956 B CN104386956 B CN 104386956B
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Abstract
The invention discloses a kind of can rapid coagulation the concrete strength mortar early reached compared with high early strength.Quick setting early strength concrete: Shui ︰ is strong Sha Jiang ︰ graded broken stone=230 ~ 240 ︰ 780 ~ 790 ︰ 1170 ~ 1190 early.Early strength mortar: water reducer 15 ~ 30 parts, cement 250 ~ 350 parts, 40 ~ 70 object quartz sands 70 ~ 90 parts, 20 ~ 40 object quartz sands 50 ~ 70 parts, 12 ~ 20 object quartz sands 50 ~ 70 parts, 8 ~ 12 object quartz sands 50 ~ 70 parts, swelling agent 60 ~ 80 parts, defoamer 1.5 ~ 2.5 parts, adulterant 100 ~ 170 parts, hardening accelerator 60 ~ 100 parts, breeze 90 ~ 180 parts.Quick setting early strength concrete of the present invention can make the concrete of newly the building demoulding coming into operation smoothly fast, can reach more than 15MPa at 2-3 hour concrete crushing strength.
Description
Technical field
The invention belongs to concrete field, be specifically related to a kind of can rapid coagulation the concrete strength mortar early reached compared with high early strength.
Background technology
At present in conventional civil engineering concrete construction, affect by cement Typical physical performance and concrete mixture characteristic, the presetting period of normal concrete was about 4 ~ 10 hours, now concrete early strength is only had an appointment 1.2MPa, even lower, now concrete on construction site structures there is no the method demoulding, more cannot bear design load; When in the heavy situation of specified conditions or misfortune danger, need fast pouring concrete structure, and in the concrete works promptly come into operation, concrete mix can be made to have built after, rapid coagulation also reaches higher early strength, namely ensures that working-yard can the smoothly demoulding the quick setting early strength concrete mix technology come into operation there is no more ripe precedent fast.Therefore, adopt quick setting early strength concrete mix technology, the concrete of newly the building demoulding coming into operation smoothly fast can be made.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of can rapid coagulation the concrete reached compared with high early strength, within 2-3 hour, ultimate compression strength reaches more than 15MPa.
The technical solution adopted for the present invention to solve the technical problems is: early strength mortar, be made up of the component of following weight proportion: water reducer 15 ~ 30 parts, cement 250 ~ 350 parts, 40 ~ 70 object quartz sands 70 ~ 90 parts, 20 ~ 40 object quartz sands 50 ~ 70 parts, 12 ~ 20 object quartz sands 50 ~ 70 parts, 8 ~ 12 object quartz sands 50 ~ 70 parts, swelling agent 60 ~ 80 parts, defoamer 1.5 ~ 2.5 parts, adulterant 100 ~ 170 parts, hardening accelerator 60 ~ 100 parts, breeze 90 ~ 180 parts.
Further, early strength mortar is made up of the component of following weight proportion: water reducer 20 ~ 30 parts, cement 310 ~ 350 parts, 40 ~ 70 object quartz sands 80 parts, 20 ~ 40 object quartz sands 60 parts, 12 ~ 20 object quartz sands 60 parts, 8 ~ 12 object quartz sands 60 parts, swelling agent 70 parts, defoamer 2 parts, adulterant 100 ~ 130 parts, hardening accelerator 80 ~ 100 parts, breeze 90 ~ 120 parts.
The present invention also provides a kind of quick setting early strength concrete, forms: Shui ︰ early strong Sha Jiang ︰ graded broken stone=230 ~ 240 ︰ 780 ~ 790 ︰ 1170 ~ 1190 by the component of following weight proportion.
Further, above-mentioned concrete forms: Shui ︰ early strong Sha Jiang ︰ graded broken stone=236 ︰ 786 ︰ 1178 by the component of following weight proportion.
Further, described morning, strength mortar was strength mortar morning described in claim 1 or 2.
Graded broken stone of the present invention, adopts commercially available graded broken stone, meets the requirement to graded broken stone in " highway road surface construction technique normalizing " (JTJ034-2000).
Water reducer proportioning early in strength mortar composition calculates according to pulvis water reducer, and the present invention adopts general commercially available water reducer, has occurred some early strength water-reducing agents on the market, also alternative use.
Cement the present invention mainly adopts commercially available ordinary Portland cement; Cement is divided into fast hard and hard two classes of express train according to its hydraulicity, and it is limited to final effect of the present invention, and the present invention improves fast solidifying time and early strength mainly through the proportioning of each material.Swelling agent also adopts commercially available common swelling agent.
Defoamer can be divided into alkaline-resisting defoamer, acidproof defoamer, paint antifoaming agent, foam-killing agent in paper-making, sand-cement slurry defoamer etc. by function, and namely the present invention adopts conventional commercially available sand-cement slurry defoamer.
Additive refers to and improves concrete performance, minimizing cement consumption and the activity reducing hydration heat and mix in concrete or inert material, the adulterant mainly flyash that the present invention adopts.
The good hardening accelerator of potent fruit commercially available morning chosen by hardening accelerator of the present invention, the compositions such as main containing sulfate, carbonate, nitrite, trolamine.
Breeze of the present invention can adopt conventional commercially available breeze, and breeze meets the stone flour of engine request and the general designation of surrogate thereof.What breeze of the present invention mainly adopted is blast furnace slag, the high fineness obtained after the art breading such as drying, grinding, high reactivity powder.
The invention has the beneficial effects as follows: although the present invention is slightly higher than normal concrete cost, but quick setting early strength concrete of the present invention can make the concrete of newly the building demoulding coming into operation smoothly fast, 2-3 hour collapsible die, and can more than 15MPa be reached at 2-3 hour concrete crushing strength, even more than 20MPa, thus reach the effect of saving construction investment and playing project benefit in advance.The present invention can configure early strength mortar (early strength mortar just adds water when constructing) in advance, and lower to the technical requirements of field worker, add early strength mortar, rubble and water in proportion at stirrer or scene, easy construction, is suitable for applying.
Embodiment
Quick setting early strength concrete of the present invention, forms: Shui ︰ early strong Sha Jiang ︰ graded broken stone=230 ~ 240 ︰ 780 ~ 790 ︰ 1170 ~ 1190 by the component of following weight proportion.
Preferably, above-mentioned concrete forms: Shui ︰ early strong Sha Jiang ︰ graded broken stone=236 ︰ 786 ︰ 1178 by the component of following weight proportion.
The present invention is by water, commercially available morning strength mortar and satisfactory graded broken stone mixing, quick setting early strength concrete can be obtained, can condense within a short period of time and reach certain intensity, but the commercially available limited use that morning, strength mortar can play, therefore, the present invention also provides a kind of early strength mortar, be made up of the component of following weight proportion: water reducer 15 ~ 30 parts, cement 250 ~ 350 parts, 40 ~ 70 object quartz sands 70 ~ 90 parts, 20 ~ 40 object quartz sands 50 ~ 70 parts, 12 ~ 20 object quartz sands 50 ~ 70 parts, 8 ~ 12 object quartz sands 50 ~ 70 parts, swelling agent 60 ~ 80 parts, defoamer 1.5 ~ 2.5 parts, adulterant 100 ~ 170 parts, hardening accelerator 60 ~ 100 parts, breeze 90 ~ 180 parts.Adopt this of strength mortar morning, this above-mentioned concrete can be made form removal in 2-3 hour, and ultimate compression strength can reach more than 15MPa in 2-3 hour.
Preferably, described morning, strength mortar was made up of the component of following weight proportion: water reducer 20 ~ 30 parts, cement 310 ~ 350 parts, 40 ~ 70 object quartz sands 80 parts, 20 ~ 40 object quartz sands 60 parts, 12 ~ 20 object quartz sands 60 parts, 8 ~ 12 object quartz sands 60 parts, swelling agent 70 parts, defoamer 2 parts, adulterant 100 ~ 130 parts, hardening accelerator 80 ~ 100 parts, breeze 90 ~ 120 parts.Adopt this of strength mortar, in 2-3 hour, ultimate compression strength can reach more than 20MPa morning.
Below by embodiment, the specific embodiment of the invention is described further, but not therefore by protection scope of the present invention restriction in one embodiment,
Embodiment one quick setting early strength concrete of the present invention
The ratio mixing of employing strong Sha Jiang ︰ graded broken stone=236 ︰ 786 ︰ mass ratio Shui ︰ commercially available morning 1178 is built, and form removal in 3 hours under this ratio, ultimate compression strength can reach 10MPa.
The ratio mixing of strong Sha Jiang ︰ graded broken stone=236 ︰ 786 ︰ 1178 mass ratio Shui ︰ the present invention morning is adopted to build, early strength mortar proportioning water reducer 20 parts, cement 280 parts, 40 ~ 70 object quartz sands 80 parts, 20 ~ 40 object quartz sands 60 parts, 12 ~ 20 object quartz sands 60 parts, 8 ~ 12 object quartz sands 60 parts, swelling agent 70 parts, defoamer 2 parts, adulterant 120 parts, hardening accelerator 80 parts, breeze 170 parts.Form removal in 3 hours under this ratio, ultimate compression strength can reach 16MPa, and the folding strength of 24 hours is greater than 6MPa.
The ratio mixing of strong Sha Jiang ︰ graded broken stone=236 ︰ 786 ︰ 1178 mass ratio Shui ︰ the present invention morning is adopted to build, early strength mortar proportioning water reducer 28 parts, cement 350 parts, 40 ~ 70 object quartz sands 80 parts, 20 ~ 40 object quartz sands 60 parts, 12 ~ 20 object quartz sands 60 parts, 8 ~ 12 object quartz sands 60 parts, swelling agent 70 parts, defoamer 2 parts, adulterant 110 parts, hardening accelerator 100 parts, breeze 100 parts.Form removal in 3 hours under this ratio, ultimate compression strength can reach 22MPa, and the folding strength of 24 hours is greater than 10MPa.
Claims (3)
1. quick setting early strength concrete, is characterized in that being made up of the component of following weight proportion: water: early strength mortar: graded broken stone=230 ~ 240:780 ~ 790:1170 ~ 1190; Described morning, strength mortar was made up of the component of following weight proportion: water reducer 15 ~ 30 parts, cement 250 ~ 350 parts, 40 ~ 70 object quartz sands 70 ~ 90 parts, 20 ~ 40 object quartz sands 50 ~ 70 parts, 12 ~ 20 object quartz sands 50 ~ 70 parts, 8 ~ 12 object quartz sands 50 ~ 70 parts, swelling agent 60 ~ 80 parts, defoamer 1.5 ~ 2.5 parts, 100 ~ 170 parts, flyash, hardening accelerator 60 ~ 100 parts, breeze 90 ~ 180 parts.
2. quick setting early strength concrete according to claim 1, is characterized in that being made up of the component of following weight proportion: water: early strength mortar: graded broken stone=236:786:1178.
3. quick setting early strength concrete according to claim 1 and 2, it is characterized in that described morning, strength mortar was made up of the component of following weight proportion: water reducer 20 ~ 30 parts, cement 310 ~ 350 parts, 40 ~ 70 object quartz sands 80 parts, 20 ~ 40 object quartz sands 60 parts, 12 ~ 20 object quartz sands 60 parts, 8 ~ 12 object quartz sands 60 parts, swelling agent 70 parts, defoamer 2 parts, 100 ~ 130 parts, flyash, hardening accelerator 80 ~ 100 parts, breeze 90 ~ 120 parts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410564266.9A CN104386956B (en) | 2014-10-21 | 2014-10-21 | Quick setting early strength concrete strength mortar early |
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| CN201410564266.9A CN104386956B (en) | 2014-10-21 | 2014-10-21 | Quick setting early strength concrete strength mortar early |
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| Publication Number | Publication Date |
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| CN104386956A CN104386956A (en) | 2015-03-04 |
| CN104386956B true CN104386956B (en) | 2016-04-27 |
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| CN109095850B (en) * | 2018-08-25 | 2021-07-20 | 北京建工新型建材有限责任公司 | High-early-strength concrete mixture and winter construction method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267809A (en) * | 2010-06-02 | 2011-12-07 | 中冶建筑研究总院有限公司 | High strength cement mortar for connecting steel bars, and preparation method thereof |
| CN103359982A (en) * | 2012-03-26 | 2013-10-23 | 中国矿业大学(北京) | Sprayed concrete material prepared by using iron tailings |
| CN103803918A (en) * | 2013-12-20 | 2014-05-21 | 同济大学 | Porcelain powder waste mixed cement-based tiny-expansion crack repairing mortar and using method thereof |
| CN104045291A (en) * | 2014-07-02 | 2014-09-17 | 关其焕 | Cement concrete pavement patching material and preparation method thereof |
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2014
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267809A (en) * | 2010-06-02 | 2011-12-07 | 中冶建筑研究总院有限公司 | High strength cement mortar for connecting steel bars, and preparation method thereof |
| CN103359982A (en) * | 2012-03-26 | 2013-10-23 | 中国矿业大学(北京) | Sprayed concrete material prepared by using iron tailings |
| CN103803918A (en) * | 2013-12-20 | 2014-05-21 | 同济大学 | Porcelain powder waste mixed cement-based tiny-expansion crack repairing mortar and using method thereof |
| CN104045291A (en) * | 2014-07-02 | 2014-09-17 | 关其焕 | Cement concrete pavement patching material and preparation method thereof |
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Granted publication date: 20160427 Termination date: 20161021 |