CN103922667A - Limestone machine-made sand dry-mixed mortar and preparation method thereof - Google Patents
Limestone machine-made sand dry-mixed mortar and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a limestone machine-made sand dry-mixed mortar and a preparation method thereof, belonging to the field of building materials. The limestone machine-made sand dry-mixed mortar comprises the following raw materials in parts by weight: 10-25 parts of cement, 5-8 parts of coal ash, 70-85 parts of machine-made sand and 0.06-0.08 part of mortar water-retention plasticizing agents, wherein the machine-made sand is limestone machine-made sand. The limestone machine-made sand dry-mixed mortar disclosed by the invention has the advantages of good cohesiveness, high water-retention rate, high compressive strength, good operability, economy, environmental protection, resource saving and the like, and is a green building material with excellent properties. The preparation method disclosed by the invention is simple and low in cost.
Description
Technical field
The invention belongs to building material field, be specifically related to a kind of Wingdale matter Machine-made Sand dry-mixed mortar and preparation method thereof.
Background technology
Dry-mixed mortar is a kind of novel green, environmental-friendly construction material.Since entering 21 century, China's dry-mixed mortar industry has progressively realized from the market introduction stage to the successful transition that develops the phase rapidly, development dry-mixed mortar has very important meaning: (1) is conducive to improve construction engineering quality and operating efficiency, reduces construction costs; (2) energy-saving and emission-reduction remarkable benefit; (3) for a new approach is opened up in comprehensive utilization of resources; (4) be conducive to promote Cement industry structural adjustment.Nowadays, dry-mixed mortar is all being widelyd popularize in all parts of the country, and especially in coastal flourishing city, the technology of dry-mixed mortar is very ripe.The widespread use of dry-mixed mortar and continue to promote economizing on resources, environment protection, guarantee construction quality, realize recycling economy, promote sustainable development significant.
As everyone knows, sand is one of main raw material(s) of mortar.Under the ordering about of economic interests, all there are the random phenomenons of adopting, disorderly digging natural sand in a lot of areas, and the excessive sand of adopting, has caused the riverbed incision of part section, affect the stable and flood passage safety of river gesture, the security of the lives and property that jeopardizes two sides embankment and the people.Along with the development of capital construction, the gradually reducing and the reinforcement of people's environmental consciousness of natural sand resource, natural sand imbalance between supply and demand becomes increasingly conspicuous becomes undisputable fact.Due to shortage, the price increase gradually of natural sand resource, and have inconvenient traffic, transportation of materials difficulty, for the needs of environment protection, it is imperative that application system sand substitutes natural sand simultaneously.
Machine-made Sand refers to the sand processing by sand machine processed and other auxiliary facility, mainly use at present cobble as the raw material of Machine-made Sand, as patent 201210165219.8, a kind of dry-mixed mortar, this patent discloses a kind of dry-mixed mortar, and it comprises the component of following weight part: 120 parts of cement; Cobble Machine-made Sand 700-800 part; 80 parts, flyash; 4 parts of admixtures; The be mixed making method of two component premixing mortars of patent 201010530600.0, twice, this patent comprises the following steps: (1) measures mixing by a certain percentage by gelling material, admixture, flyash, silicon ash and mineral admixture, makes bonding component; (2) metering by a certain percentage of gathering materials different-grain diameter being distributed mixes, and makes the component of gathering materials; (3) by described bonding component and component in bulk or packed being transported to behind working-yard respectively of gathering materials, according to gelling component, account for 15%-35%, the component that gathers materials account for 65 %-85% ratio, according to mortar kind, determine amount of water, under airtight condition, carrying out secondary is mixed, make two component premixing mortars that are mixed for twice, described in the rational gradation composition river sand or the cobble Machine-made Sand that gather materials and be less than 5 millimeters for particle diameter.Cobble matter Machine-made Sand particle has corner angle, and grain composition is poor, and the shared ratio of coarse particles and fine powder is higher, and silt content is high, and these drawbacks have greatly restricted Machine-made Sand and applied in premixing mortar.
Summary of the invention
The object of the invention is to overcome the shortcoming of river sand and cobble matter Machine-made Sand, a kind of Wingdale matter Machine-made Sand dry-mixed mortar and preparation method thereof is provided, meet the requirement of < < premixing mortar > > (GB/T25181-2010) and concerned countries technological standard, gained dry-mixed mortar has the advantages such as cohesiveness is good, water retention is high and ultimate compression strength is large, operability is good, and economic environmental protection, economize on resources, preparation method is simple, with low cost.
Technical scheme of the present invention is as follows:
A Wingdale matter Machine-made Sand dry-mixed mortar, comprises the raw material of following weight part: cement 10-25 part, flyash 5-8 part, Machine-made Sand 70-85 part, admixture 0.06-0.08 part; Described Machine-made Sand is Wingdale matter Machine-made Sand.
As further restriction of the present invention, described Wingdale matter Machine-made Sand particle diameter 1.18～3.5mm is one-level, and particle diameter 1.18mm is one-level below, and the two mixed weight is than being 0.8:1～1:1.
As further restriction of the present invention, described cement is ordinary Portland cement, its strength grade >=42.5MPa.
As further restriction of the present invention, described fineness of pulverized-coal ash≤25%.
As further restriction of the present invention, described admixture is mortar water conservation softening agent, and tap density is 545g/L.Water conservation softening agent of the present invention is selected from the BNE5322C grout additive that Bo Run good Science and Technology Ltd. in Beijing produces.According to the technology general knowledge known to those of ordinary skills, described mortar water conservation softening agent can also be selected the general water conservation softening agent of selling on market.
The preparation method of the above dry-mixed mortar, comprises the following steps:
(1) by following weight part, take respectively raw material: cement 10-25 part, flyash 5-8 part, Wingdale matter Machine-made Sand 70-85 part, mortar water conservation softening agent 0.06-0.08 part;
(2) load weighted dried feed is poured into dry mixing 180s in stirrer;
(3) according to denseness, add mixing water to stir again at the construction field (site).
As further restriction of the present invention, the weight ratio of mixing water and cement, flyash is 0.5-0.8.
Compared with prior art, advantage of the present invention and beneficial effect are:
1. Wingdale matter Machine-made Sand raw material resources is abundant; be used for replacing natural river sand; solved the problem of river sand resource scarcity; be conducive to environment protection, the 7 days ultimate compression strength of dry-mixed mortar of containing limestone serous matter Machine-made Sand is up to 21.9Mpa simultaneously, and within 28 days, ultimate compression strength is up to 31.8Mpa; water retention 92.6%-95.6%;, solved the unstable problem that causes concrete quality to decline in sand source, river, guaranteed carrying out smoothly of concrete quality and construction.
2. compare with cobble matter Machine-made Sand, Wingdale matter Machine-made Sand starting material wide material sources (as the mine tailing producing in mining and the course of processing), production process need not be through washing, grain composition is easily adjusted, not only improved the comprehensive utilization of mine waste resource, the water resources of also saving, on market, cobble matter Machine-made Sand price per ton is 80 yuan of left and right, wherein also with certain moisture, and the price of Wingdale matter Machine-made Sand is only 35 yuan/ton.
3. Wingdale matter Machine-made Sand is carried out to sieve classification, collocation is used again, and grain composition is good, and the water retention of the mortar of preparation and ultimate compression strength are all higher, and operability is better.
4. mortar water conservation softening agent can be used for preparing various strength grade common building mortars by replace lime cream, as common masonry mortar and common motar, its property indices is even better than traditional mortar, and mortar water conservation softening agent is used in building mortar, environmental protection, nontoxic, "dead", non-corrosiveness, can also effectively reduce the cost of building mortar, obviously improves workability and the operating performance of building mortar.
5. the present invention adopts exempts from drying production process, technique is simple, not only can save energy consumption, carbonic acid gas and the impact of flue dust on atmosphere and environment of also having avoided drying course to discharge, realized pollution-free, zero release, more energy-conservation, the target of environmental protection more, meet the requirement of country to energy-saving and emission-reduction, meets low-carbon economy in the developing direction of dry-mixed mortar industry.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, but do not limit the scope of the invention and range of application.
embodiment 1
(1) by following weight part, take respectively raw material: cement 90kg, flyash 80kg, Machine-made Sand 830kg, mortar water conservation softening agent 0.8kg, water 135kg;
(2) load weighted dried feed is poured into dry mixing 180s in stirrer;
(3) according to denseness, add again mixing water to stir at the construction field (site).
Wherein strength of cement grade is PO42.5, and flyash is II level, and Wingdale matter Machine-made Sand particle diameter 1.18～3.5mm is one-level, and particle diameter 1.18mm is one-level below, and the two mixed weight ratio is 0.8:1,
Gained mortar mixture denseness 78mm, 2h denseness rate of loss 19.8%, water retention 93.6%, apparent density 1860 kg/m
3, 7 days intensity is 4.3MPa, 28 days intensity is 6.5MPa.This mortar fundamental property meets the requirement of the common dry-mixed masonry mortar M5 of national standard < < premixing mortar > > (GB/T25181-2010).
embodiment 2
(1) by following weight part, take respectively raw material: cement 105kg, flyash 80kg, Machine-made Sand 815kg, mortar water conservation softening agent 0.8kg, water 135kg;
(2) load weighted dried feed is poured into dry mixing 180s in stirrer;
(3) according to denseness, add again mixing water to stir at the construction field (site).
Wherein strength of cement grade is PO42.5, and flyash is II level, and Wingdale matter Machine-made Sand particle diameter 1.18～3.5mm is one-level, and particle diameter 1.18mm is one-level below, and the two mixed weight ratio is 0.8:1,
Gained mortar mixture denseness 76mm, 2h denseness rate of loss 20.2%, water retention 94.9%, apparent density 1860 kg/m
3, 7 days intensity is 5.5MPa, 28 days intensity is 8.6MPa.This mortar fundamental property meets the requirement of the common dry-mixed masonry mortar M7.5 of national standard < < premixing mortar > > (GB/T25181-2010).
embodiment 3
(1) by following weight part, take respectively raw material: cement 120kg, flyash 75kg, Machine-made Sand 805kg, mortar water conservation softening agent 0.8kg, water 138kg;
(2) load weighted dried feed is poured into dry mixing 180s in stirrer;
(3) according to denseness, add again mixing water to stir at the construction field (site).
Wherein strength of cement grade is PO42.5, and flyash is II level, and Wingdale matter Machine-made Sand particle diameter 1.18～3.5mm is one-level, and particle diameter 1.18mm is one-level below, and the two mixed weight ratio is 0.8:1,
Gained mortar mixture denseness 77mm, 2h denseness rate of loss 19.2%, water retention 94.5%, apparent density 1880 kg/m
3, 7 days intensity is 7.4MPa, 28 days intensity is 13.2MPa.This mortar fundamental property meets the requirement of the common dry-mixed masonry mortar M10 of national standard < < premixing mortar > > (GB/T25181-2010).
embodiment 4
(1) by following weight part, take respectively raw material: cement 142kg, flyash 68kg, Machine-made Sand 790kg, mortar water conservation softening agent 0.7kg, water 142kg;
(2) load weighted dried feed is poured into dry mixing 180s in stirrer;
(3) according to denseness, add again mixing water to stir at the construction field (site).
Wherein strength of cement grade is PO42.5, and flyash is II level, and Wingdale matter Machine-made Sand particle diameter 1.18～3.5mm is one-level, and particle diameter 1.18mm is one-level below, and the two mixed weight ratio is 0.9:1,
Gained mortar mixture denseness 75mm, 2h denseness rate of loss 18.5%, water retention 94.9%, apparent density 1920kg/m
3, 7 days intensity is 11.4MPa, 28 days intensity is 18.1MPa.This mortar fundamental property meets the requirement of the common dry-mixed masonry mortar M15 of national standard < < premixing mortar > > (GB/T25181-2010).
embodiment 5
(1) by following weight part, take respectively raw material: cement 175kg, flyash 60kg, Machine-made Sand 765kg, mortar water conservation softening agent 0.7kg, water 145 kg;
(2) load weighted dried feed is poured into dry mixing 180s in stirrer;
(3) according to denseness, add again mixing water to stir at the construction field (site).
Wherein strength of cement grade is PO42.5, and flyash is II level, and Wingdale matter Machine-made Sand particle diameter 1.18～3.5mm is one-level, and particle diameter 1.18mm is one-level below, and the two mixed weight ratio is 0.9:1,
Gained mortar mixture denseness 77mm, 2h denseness rate of loss 17.1%, water retention 94.7%, apparent density 1950kg/m
3, 7 days intensity is 15.5MPa, 28 days intensity is 23.1MPa.This mortar fundamental property meets the requirement of the common dry-mixed masonry mortar M20 of national standard < < premixing mortar > > (GB/T25181-2010).
embodiment 6
(1) by following weight part, take respectively raw material: cement 218kg, flyash 52kg, Machine-made Sand 730kg, mortar water conservation softening agent 0.6kg, water 146 kg;
(2) load weighted dried feed is poured into dry mixing 180s in stirrer;
(3) according to denseness, add again mixing water to stir at the construction field (site).
Wherein strength of cement grade is PO42.5, and flyash is II level, and Wingdale matter Machine-made Sand particle diameter 1.18～3.5mm is one-level, and particle diameter 1.18mm is one-level below, and the two mixed weight ratio is 1:1,
Gained mortar mixture denseness 74mm, 2h denseness rate of loss 15.4%, water retention 95.6%, apparent density 1990kg/m
3, 7 days intensity is 18.6MPa, 28 days intensity is 27.7MPa.This mortar fundamental property meets the requirement of the common dry-mixed masonry mortar M25 of national standard < < premixing mortar > > (GB/T25181-2010).
embodiment 7
(1) by following weight part, take respectively raw material: cement 245kg, flyash 45kg, Machine-made Sand 710kg, mortar water conservation softening agent 1.0kg, water 150kg;
(2) load weighted dried feed is poured into dry mixing 180s in stirrer;
(3) according to denseness, add again mixing water to stir at the construction field (site).
Wherein strength of cement grade is PO42.5, and flyash is II level, and Wingdale matter Machine-made Sand particle diameter 1.18～3.5mm is one-level, and particle diameter 1.18mm is one-level below, and the two mixed weight ratio is 1:1,
Gained mortar mixture denseness 75mm, 2h denseness rate of loss 13.2%, water retention 96.2%, apparent density 2040kg/m
3, 7 days intensity is 21.9MPa, 28 days intensity is 31.8MPa.This mortar fundamental property meets the requirement of the common dry-mixed masonry mortar M30 of national standard < < premixing mortar > > (GB/T25181-2010).
comparative example 1
As a comparison, adopt simultaneously comparatively conventional on the market cobble matter Machine-made Sand as sand and lime putty as water conservation plastification material, respectively according to the scheme of embodiment 1,3,5 and proportioning preparation mortar.Adopt identical detection method under identical condition, to contrast mortar fundamental property, detected result refers to table 1.
Table 1 mortar fundamental property
As can be seen from Table 1, compare with the mortar of cobble matter Machine-made Sand preparation, the performance of the dry-mixed mortar each side of preparing with Wingdale matter Machine-made Sand is very significantly improved, 2h denseness rate of loss (the less performance of denseness rate of loss is better), water retention (water retention more high-performance is better), apparent density (the larger performance of apparent density is better), ultimate compression strength are all better, mortar is without bleeding, and cohesiveness and processing property are good.
The Economic and Efficiency Analysis of contrast mortar is the results detailed in Table 2.
Table 2 Economic and Efficiency Analysis
| Kind | Procurement price (yuan/ton) | Oven dry cost (yuan/ton) | Dry-mixed mortar sand cost (yuan/ton) |
| Wingdale matter Machine-made Sand | 35 | 0 | 24-32 |
| Cobble matter Machine-made Sand | 75 | 15 | 63-76 |
| River sand | 100 | 15 | 80-98 |
As can be seen from Table 2, prepare dry-mixed mortar with low cost with Wingdale matter Machine-made Sand, the dry-mixed mortar per ton only cost of sand has just been saved 40-60 unit, and the economic benefit of generation is very significant.
Claims (9)
1. a Wingdale matter Machine-made Sand dry-mixed mortar, is characterized in that, this dry-mixed mortar comprises the raw material of following weight part: cement 10-25 part, flyash 5-8 part, Machine-made Sand 70-85 part, admixture 0.06-0.08 part; Described Machine-made Sand is Wingdale matter Machine-made Sand.
2. a kind of Wingdale matter Machine-made Sand dry-mixed mortar according to claim 1, is characterized in that, described Wingdale matter Machine-made Sand particle diameter 1.18～3.5mm is one-level, and particle diameter 1.18mm is one-level below, and the two mixed weight is than being 0.8:1～1:1.
3. according to a kind of Wingdale matter Machine-made Sand dry-mixed mortar described in claim 1 or 2, it is characterized in that, described cement is ordinary Portland cement, its strength grade >=42.5MPa.
4. a kind of Wingdale matter Machine-made Sand dry-mixed mortar according to claim 3, is characterized in that described fineness of pulverized-coal ash≤25%.
5. a kind of Wingdale matter Machine-made Sand dry-mixed mortar according to claim 3, is characterized in that, described admixture is mortar water conservation softening agent, and tap density is 545g/L.
6. as a preparation method for Wingdale matter Machine-made Sand dry-mixed mortar as described in arbitrary in claim 1 to 5, it is characterized in that, comprise the following steps:
(1) by following weight part, take respectively raw material: cement 10-25 part, flyash 5-8 part, Machine-made Sand 70-85 part, admixture 0.06-0.08 part;
(2) load weighted dried feed is poured into dry mixing 180s in stirrer;
(3) according to slurry consistency, add mixing water to stir again at the construction field (site).
7. a kind of preparation method of Wingdale matter Machine-made Sand dry-mixed mortar according to claim 6, is characterized in that, the weight ratio of described mixing water and cement, flyash is 0.5-0.8.
8. a kind of preparation method of Wingdale matter Machine-made Sand dry-mixed mortar according to claim 6, is characterized in that, described Machine-made Sand is Wingdale matter Machine-made Sand.
9. a kind of preparation method of Wingdale matter Machine-made Sand dry-mixed mortar according to claim 6, is characterized in that, described admixture is mortar water conservation softening agent, and tap density is 545g/L.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104829172A (en) * | 2015-04-01 | 2015-08-12 | 浙江忠信新型建材有限公司 | Dry mixed material for wall plastering |
| CN105174901A (en) * | 2015-09-17 | 2015-12-23 | 盐城工学院 | High-performance potassium magnesium phosphate cement mortar and preparation method thereof |
| CN105859218A (en) * | 2016-04-14 | 2016-08-17 | 广西横县恒丰建材有限责任公司 | Premixed mechanized spraying mortar and production method thereof |
| CN106007575A (en) * | 2016-05-23 | 2016-10-12 | 广西横县恒丰建材有限责任公司 | Powdery interface treatment agent for autoclaved aerated brick and production method thereof |
| CN106007592A (en) * | 2016-05-23 | 2016-10-12 | 广西横县恒丰建材有限责任公司 | Super early strength type plastic expansion repair mortar and production method thereof |
| CN106747016A (en) * | 2017-01-05 | 2017-05-31 | 成都澳力鑫新型建材有限公司 | A kind of Machine-made Sand cement mortar |
| CN107098647A (en) * | 2017-05-12 | 2017-08-29 | 昆明理工大学 | A kind of high tenacity dry-mixed mortar and its preparation technology |
| CN107265934A (en) * | 2017-06-08 | 2017-10-20 | 上海百理新材料科技股份有限公司 | A kind of method for replacing natural sand to prepare dry-mixed masonry mortar by raw material of Machine-made Sand |
| CN107814522A (en) * | 2017-11-21 | 2018-03-20 | 甘肃建投矿业有限公司 | A kind of basalt Machine-made Sand dry-mixed mortar and preparation method thereof |
| CN107915449A (en) * | 2017-12-14 | 2018-04-17 | 盐城工学院 | A kind of dry-mixed masonry mortar and preparation method thereof |
| CN109592942A (en) * | 2017-12-19 | 2019-04-09 | 杭州墨泰科技股份有限公司 | A kind of three-in-one dry-mixed mortar |
| CN111377692A (en) * | 2020-04-25 | 2020-07-07 | 遂宁安通商品混凝土有限公司 | Premixed floor mortar |
| CN111393110A (en) * | 2020-03-28 | 2020-07-10 | 德清高盛交通科技有限公司 | Full-machine-made sand masonry mortar with limestone as aggregate and preparation method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104829172A (en) * | 2015-04-01 | 2015-08-12 | 浙江忠信新型建材有限公司 | Dry mixed material for wall plastering |
| CN105174901A (en) * | 2015-09-17 | 2015-12-23 | 盐城工学院 | High-performance potassium magnesium phosphate cement mortar and preparation method thereof |
| CN105859218A (en) * | 2016-04-14 | 2016-08-17 | 广西横县恒丰建材有限责任公司 | Premixed mechanized spraying mortar and production method thereof |
| CN106007575A (en) * | 2016-05-23 | 2016-10-12 | 广西横县恒丰建材有限责任公司 | Powdery interface treatment agent for autoclaved aerated brick and production method thereof |
| CN106007592A (en) * | 2016-05-23 | 2016-10-12 | 广西横县恒丰建材有限责任公司 | Super early strength type plastic expansion repair mortar and production method thereof |
| CN106747016A (en) * | 2017-01-05 | 2017-05-31 | 成都澳力鑫新型建材有限公司 | A kind of Machine-made Sand cement mortar |
| CN107098647A (en) * | 2017-05-12 | 2017-08-29 | 昆明理工大学 | A kind of high tenacity dry-mixed mortar and its preparation technology |
| CN107265934A (en) * | 2017-06-08 | 2017-10-20 | 上海百理新材料科技股份有限公司 | A kind of method for replacing natural sand to prepare dry-mixed masonry mortar by raw material of Machine-made Sand |
| CN107814522A (en) * | 2017-11-21 | 2018-03-20 | 甘肃建投矿业有限公司 | A kind of basalt Machine-made Sand dry-mixed mortar and preparation method thereof |
| CN107915449A (en) * | 2017-12-14 | 2018-04-17 | 盐城工学院 | A kind of dry-mixed masonry mortar and preparation method thereof |
| CN109592942A (en) * | 2017-12-19 | 2019-04-09 | 杭州墨泰科技股份有限公司 | A kind of three-in-one dry-mixed mortar |
| CN111393110A (en) * | 2020-03-28 | 2020-07-10 | 德清高盛交通科技有限公司 | Full-machine-made sand masonry mortar with limestone as aggregate and preparation method thereof |
| CN111377692A (en) * | 2020-04-25 | 2020-07-07 | 遂宁安通商品混凝土有限公司 | Premixed floor mortar |
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Application publication date: 20140716 |