CN110078441A - Construction high-durability machine-made sand concrete - Google Patents

Construction high-durability machine-made sand concrete Download PDF

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Publication number
CN110078441A
CN110078441A CN201910338971.XA CN201910338971A CN110078441A CN 110078441 A CN110078441 A CN 110078441A CN 201910338971 A CN201910338971 A CN 201910338971A CN 110078441 A CN110078441 A CN 110078441A
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CN
China
Prior art keywords
concrete
machine
sand
construction
water
Prior art date
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Pending
Application number
CN201910338971.XA
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Chinese (zh)
Inventor
张金锋
王涛
谢永录
原旭峰
陈理
郭志超
王可心
周涛
李务磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway 12th Bureau Group Co Ltd
2nd Engineering Co Ltd of China Railway 12 Bureau Group
Original Assignee
China Railway 12th Bureau Group Co Ltd
2nd Engineering Co Ltd of China Railway 12 Bureau Group
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Railway 12th Bureau Group Co Ltd, 2nd Engineering Co Ltd of China Railway 12 Bureau Group filed Critical China Railway 12th Bureau Group Co Ltd
Priority to CN201910338971.XA priority Critical patent/CN110078441A/en
Publication of CN110078441A publication Critical patent/CN110078441A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • C04B28/04Portland cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00034Physico-chemical characteristics of the mixtures
    • C04B2111/00146Sprayable or pumpable mixtures
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20Resistance against chemical, physical or biological attack
    • C04B2111/2023Resistance against alkali-aggregate reaction
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20Resistance against chemical, physical or biological attack
    • C04B2111/29Frost-thaw resistance

Abstract

The present invention provides a kind of construction high-durability machine-made sand concrete, concrete is composed of the following components: ordinary portland cement, flyash, Machine-made Sand, coarse aggregate, mixing water and water-reducing agent, the weight proportion of each component are as follows: ordinary portland cement 202-251kg/m3, flyash 68-108kg/m3, Machine-made Sand 730-757kg/m3, coarse aggregate 1094-1136kg/m3, mixing water 165-173kg/m3, water-reducing agent 4.05-5.38kg/m3.It is added to suitable Machine-made Sand and coarse aggregate in concrete provided by the invention, helps to improve early strength of concrete, improves concrete performance, more preferable fill concrete internal voids improve concrete density.Also add flyash in concrete, enhanced the pumpability of concrete, reduced creeping for concrete, improved the impermeability of concrete, increases the modified of concrete.Meanwhile suitable portland cement is added in concrete, there are higher compression strength, anti-permeability performance and corrosion resistance.And the raw material of concrete provided by the invention is gathered materials on the spot, and is easy to get, and material cost is reduced.

Description

Construction high-durability machine-made sand concrete
Technical field
The present invention relates to Municipal Engineering Construction fields, and in particular, to a kind of construction high-durability machine-made sand concrete.
Background technique
The development advanced by leaps and bounds with building trade continues to increase the demand of concrete, while to the matter of concrete Amount also there are certain requirements, and be not limited solely to compression strength to the performance requirement of concrete, but on the basis of basing oneself upon intensity, More focus on the balance and coordination of the overall targets such as the durability of concrete.The requirement of concrete performance indexes is than in the past more Clearly, it refines and specific.
Traditional endurance performance of concrete is poor, so that concrete can not adapt to a variety of use occasions, and traditional coagulation Inner texture is uneven in native process, and the concrete surface gap produced is caused to be unevenly distributed, so that concrete is solid It is easy to crack after change and perishable after the concrete gouging abrasion after casting.
Summary of the invention
It is poor for the durability of concrete in the prior art, easy to crack, perishable technical problem after concrete curing, this Invention provides a kind of construction high-durability machine-made sand concrete, and the concrete durability is good, not easy to crack after solidification, Corrosion.
To achieve the above object, construction provided by the invention is composed of the following components with high-durability machine-made sand concrete: Ordinary portland cement, flyash, Machine-made Sand, coarse aggregate, mixing water and water-reducing agent, the weight proportion of each component are as follows: ordinary silicon Acid salt cement 202-251kg/m3, flyash 68-108kg/m3, Machine-made Sand 730-757kg/m3, coarse aggregate 1094-1136kg/ m3, mixing water 165-173kg/m3, water-reducing agent 4.05-5.38kg/m3
Further, the weight proportion of each component of the construction high-durability machine-made sand concrete are as follows: common silicic acid Salt cement 202kg/m3, flyash 68kg/m3, Machine-made Sand 757kg/m3, coarse aggregate 1136kg/m3, mixing water 173kg/m3, diminishing Agent 4.05kg/m3
Further, the weight proportion of each component of the construction high-durability machine-made sand concrete are as follows: common silicic acid Salt cement 239kg/m3, flyash 80kg/m3, Machine-made Sand 740kg/m3, coarse aggregate 1110kg/m3, mixing water 172kg/m3, diminishing Agent 4.78kg/m3
Further, the weight proportion of each component of the construction high-durability machine-made sand concrete are as follows: common silicic acid Salt cement 251kg/m3, flyash 108kg/m3, Machine-made Sand 730kg/m3, coarse aggregate 1094kg/m3, mixing water 165kg/m3, subtract Aqua 5.38kg/m3
Further, the fineness modulus of the Machine-made Sand is 2.8.
Further, the diameter of the coarse aggregate is between 5-31.5mm.
Further, the composition weight match ratio of the coarse aggregate are as follows: 5-10mm rubble 20%, 10-20mm rubble 50%, 16-31.5mm rubble 30%.
Further, the water-reducing agent is polycarboxylate water-reducer.
The technical solution provided through the invention, the present invention at least have the following technical effect that
It uses in construction high-durability machine-made sand concrete provided by the invention by Mechanical Crushing, the machine being sieved into Sand processed, the Machine-made Sand are process by limestone, granite, gneiss, basalt, building waste residue, tailing, recycled aggregate etc., Sorting range is wide, and most area can gather materials on the spot, for build construction not only effectively reduce transportation cost, also speed up Project progress improves economic benefit.Simultaneously by adjusting the content of coarse aggregate and Machine-made Sand, the morning of concrete is helped to improve Phase intensity improves concrete performance, can preferably fill concrete internal voids, propose the compactness of concrete.In concrete It is also added into flyash, enhances the pumpability of concrete, reduces creeping for concrete, improves the impervious energy of concrete Power increases the modified of concrete.Meanwhile also added suitable portland cement in concrete, resistance to compression with higher Intensity, anti-permeability performance and corrosion resistance.And the raw material of concrete provided by the invention is gathered materials on the spot, and is easy to get, drop Low material cost.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Specific embodiment
The specific embodiment of the embodiment of the present invention is described in detail below.It should be understood that described herein Specific embodiment be merely to illustrate and explain the present invention embodiment, be not intended to restrict the invention embodiment.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase Mutually combination.
Below in conjunction with embodiment, the present invention will be described in detail.
The embodiment of the present invention provides a kind of construction high-durability machine-made sand concrete, construction high-durability Machine-made Sand Concrete is composed of the following components: ordinary portland cement, flyash, Machine-made Sand, coarse aggregate, mixing water and water-reducing agent, each group The weight proportion divided are as follows: ordinary portland cement 202-251kg/m3, flyash 68-108kg/m3, Machine-made Sand 730-757kg/ m3, coarse aggregate 1094-1136kg/m3, mixing water 165-173kg/m3, water-reducing agent 4.05-5.38kg/m3
Specifically, concrete provided in an embodiment of the present invention is somebody's turn to do using by Mechanical Crushing, the Machine-made Sand being sieved into Machine-made Sand is process by limestone, granite, gneiss, basalt, building waste residue, tailing, recycled aggregate etc., sorting range Extensively, most area can gather materials on the spot, for build construction not only effectively reduce transportation cost, also speeded up engineering into Degree, improves economic benefit.Simultaneously by adjusting the content of coarse aggregate and Machine-made Sand, the early strength of product is helped to improve, Improve properties of product, can preferably fill concrete internal voids, improve the compactness of concrete.It is also added into concrete Flyash enhances the pumpability of concrete, reduces creeping for concrete, improves the impermeability of concrete, increases The modified of concrete.Meanwhile also added suitable portland cement in concrete, it is compression strength with higher, impervious Performance and corrosion resistance.It can control the compression strength condensation of concrete by adjusting the content of water-reducing agent in concrete Time can store the long period so that the presetting period is long.And the raw material of concrete provided by the invention is gathered materials on the spot, and is held It easily obtains, reduces material cost.
Further, the fineness modulus of the Machine-made Sand is 2.8.
Further, the diameter of the coarse aggregate is between 5-31.5mm.
Further, the composition weight match ratio of the coarse aggregate are as follows: 5-10mm rubble 20%, 10-20mm rubble 50%, 16-31.5mm rubble 30%.
Further, the water-reducing agent is polycarboxylate water-reducer.
Specifically, polycarboxylate water-reducer can prevent concrete slump loss obviously slow without causing in the embodiment of the present invention It is solidifying, higher plasticizing effect is played under low-dosage, mobility retentivity is good, and it is significant to concrete reinforcing effect, coagulation can be reduced Soil is shunk.
The concrete of the embodiment of the present invention provides following three kinds of products by changing the additive amount of different material:
Product one: the weight proportion of each component of construction high-durability machine-made sand concrete are as follows: ordinary portland cement 202kg/m3, flyash 68kg/m3, Machine-made Sand 757kg/m3, coarse aggregate 1136kg/m3, mixing water 173kg/m3, water-reducing agent 4.05kg/m3
The product water-cement ratio is 0.64, sand coarse aggregate ratio 40%, is suitable for retaining wall and fore shaft, backfill etc. and constructs.
Product two: the weight proportion of each component of construction high-durability machine-made sand concrete are as follows: ordinary portland cement 239kg/m3, flyash 80kg/m3, Machine-made Sand 740kg/m3, coarse aggregate 1110kg/m3, mixing water 172kg/m3, water-reducing agent 4.78kg/m3
The product water-cement ratio is 0.54, sand coarse aggregate ratio 40%, fills, marks time suitable for cushion block, inverted arch, bed course, guiding wall, returning Fill out, slope protection, retaining wall and fore shaft, change fill out, ditch, the construction such as intercepting ditch.
Product three: the weight proportion of each component of construction high-durability machine-made sand concrete are as follows: ordinary portland cement 251kg/m3, flyash 108kg/m3, Machine-made Sand 730kg/m3, coarse aggregate 1094kg/m3, mixing water 165kg/m3, water-reducing agent 5.38kg/m3
The product water-cement ratio is 0.46, and sand coarse aggregate ratio 40% is suitable for intercepting ditch, cushion cap, pile body, strip footing, pile cover, side The construction such as slope protection, anchor pile.
The embodiment of the present invention is logical to the slump of product one, product two and product three, bleeding rate, air content, electricity respectively Amount and compression strength are tested, and the data measured are as shown in table 1:
Table 1
The embodiment of the present invention is respectively to alkali content, chloride ion content and three oxygen in product one, product two and product three Change sulfur content to be detected, the data measured are as shown in table 2:
Table 2
According to Tables 1 and 2 it is found that three kinds of products all have good cohesiveness, water-retaining property and frost resistance, alkali content is low, It can effectively prevent alkali-aggregate reaction, not easy to crack, corrosion, durability is good.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above Detail within the scope of the technical concept of the present invention can be with various simple variants of the technical solution of the present invention are made, this A little simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally The thought of invention, it should also be regarded as the disclosure of the present invention.

Claims (8)

1. a kind of construction high-durability machine-made sand concrete, which is characterized in that the construction high-durability Machine-made Sand coagulation Soil is composed of the following components: ordinary portland cement, flyash, Machine-made Sand, coarse aggregate, mixing water and water-reducing agent, each component Weight proportion are as follows: ordinary portland cement 202-251kg/m3, flyash 68-108kg/m3, Machine-made Sand 730-757kg/m3, it is thick Aggregate 1094-1136kg/m3, mixing water 165-173kg/m3, water-reducing agent 4.05-5.38kg/m3
2. construction high-durability machine-made sand concrete according to claim 1, which is characterized in that the construction is resistance to height The weight proportion of each component of long property machine-made sand concrete are as follows:
Ordinary portland cement 202kg/m3, flyash 68kg/m3, Machine-made Sand 757kg/m3, coarse aggregate 1136kg/m3, mixing water 173kg/m3, water-reducing agent 4.05kg/m3
3. construction high-durability machine-made sand concrete according to claim 1, which is characterized in that the construction is resistance to height The weight proportion of each component of long property machine-made sand concrete are as follows:
Ordinary portland cement 239kg/m3, flyash 80kg/m3, Machine-made Sand 740kg/m3, coarse aggregate 1110kg/m3, mixing water 172kg/m3, water-reducing agent 4.78kg/m3
4. construction high-durability machine-made sand concrete according to claim 1, which is characterized in that the construction is resistance to height The weight proportion of each component of long property machine-made sand concrete are as follows:
Ordinary portland cement 251kg/m3, flyash 108kg/m3, Machine-made Sand 730kg/m3, coarse aggregate 1094kg/m3, mixing water 165kg/m3, water-reducing agent 5.38kg/m3
5. construction high-durability machine-made sand concrete, feature described in any one of -4 claims according to claim 1 It is, the fineness modulus of the Machine-made Sand is 2.8.
6. construction high-durability machine-made sand concrete, feature described in any one of -4 claims according to claim 1 It is, the diameter of the coarse aggregate is between 5-31.5mm.
7. construction high-durability machine-made sand concrete, feature described in any one of -4 claims according to claim 1 It is, the composition weight match ratio of the coarse aggregate are as follows:
5-10mm rubble 20%, 10-20mm rubble 50%, 16-31.5mm rubble 30%.
8. construction high-durability machine-made sand concrete, feature described in any one of -4 claims according to claim 1 It is, the water-reducing agent is polycarboxylate water-reducer.
CN201910338971.XA 2019-04-25 2019-04-25 Construction high-durability machine-made sand concrete Pending CN110078441A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110776288A (en) * 2019-10-09 2020-02-11 中铁十二局集团安徽混凝土制品有限公司 High-performance machine-made sand concrete and preparation method of machine-made sand thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103288398A (en) * 2013-05-15 2013-09-11 宁波市高等级公路建设指挥部 High-performance machine-made sand marine concrete and preparation method thereof
CN103936363A (en) * 2014-03-25 2014-07-23 广西鱼峰集团有限公司 Underwater concrete containing limestone machine-made sand and preparation method thereof
CN106007579A (en) * 2016-05-23 2016-10-12 青神鑫统领建材有限公司 Concrete containing machine-processed gravel powder and dust collection stone powder and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103288398A (en) * 2013-05-15 2013-09-11 宁波市高等级公路建设指挥部 High-performance machine-made sand marine concrete and preparation method thereof
CN103936363A (en) * 2014-03-25 2014-07-23 广西鱼峰集团有限公司 Underwater concrete containing limestone machine-made sand and preparation method thereof
CN106007579A (en) * 2016-05-23 2016-10-12 青神鑫统领建材有限公司 Concrete containing machine-processed gravel powder and dust collection stone powder and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110776288A (en) * 2019-10-09 2020-02-11 中铁十二局集团安徽混凝土制品有限公司 High-performance machine-made sand concrete and preparation method of machine-made sand thereof

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