CN101987786B - Superfine sand penetration-resistant concrete - Google Patents
Superfine sand penetration-resistant concrete Download PDFInfo
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- CN101987786B CN101987786B CN2009100634966A CN200910063496A CN101987786B CN 101987786 B CN101987786 B CN 101987786B CN 2009100634966 A CN2009100634966 A CN 2009100634966A CN 200910063496 A CN200910063496 A CN 200910063496A CN 101987786 B CN101987786 B CN 101987786B
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Abstract
The invention relates to superfine sand penetration-resistant concrete applied to constructional engineering. The superfine sand penetration-resistant concrete is characterized by comprising the following materials in percentage by weight: 14.6 percent of P.042.5 portland cement, 19.9 percent of superfine sand, 8.5 percent of machine-made sand, 49.9 percent of detritus, 0.1 percent of high-efficiency waterproof agent and 7.0 percent of water. The superfine sand penetration-resistant concrete solves the problems that the conventional superfine sand concrete is susceptible to dry-shrinkage cracking and layering and cannot be applied to a penetration-resistant structure. In the superfine sand penetration-resistant concrete prepared according to the scheme of the invention, performance such as strength, penetration resistance, durability, wear resistance, dry-shrinkage deformation and the like meet the requirements of relevant regulations.
Description
(1) technical field: the present invention relates to the concrete improvement technology of construction work, belong to a kind of special fine sand water-tight concrete.
(2) background technology: because special fine sand fineness modulus is less, can cause the increase of cement consumption and water consumption in every cube of concrete during concrete batching, afterwards concrete performance index is totally unfavorable to hardening; Be prone to produce the dry shrinkage and cracking phenomenon, and during the superfine sand concrete construction, demixing phenomenon very easily occurs; So special fine sand should not use in important concrete structure engineering; More should not be used for impervious structure, in the prior art, the concrete regulation that impervious structure is used can only be used the medium coarse sand preparation.But in Chongqing, geographic medium coarse sand resources such as the Yellow River, Jia Lingjiang River, desert are relatively deficienter, and special fine sand resource is very abundant.Therefore the concrete transportation cost of the impervious structure of these area preparations is high, and the engineering construction cost is high.
(3) summary of the invention: the object of the invention is exactly to solve the difficult problem that special fine sand can not be used preparation water-tight concrete structure, for vast special fine sand repository provides a kind of special fine sand water-tight concrete.
The present invention is through the concrete mix experimental study; Special fine sand and machine-processed sand (sieving with special fine sand) are mixed by a certain percentage; Under control sand coarse aggregate ratio and wc condition, mix the system concrete, effectively utilize local special fine sand resource, optimize concrete performance; Practice thrift the engineering construction cost, and guarantee the quality of engineering.
Concrete scheme of the present invention is: a kind of special fine sand water-tight concrete is characterized in that: its material component weight percent is: PO42.5 silicate cement 14.6, special fine sand 19.9, machine-processed sand 8.5, rubble 49.9, high-effect water-proof agent 0.1, water 7.0.
Special fine sand fineness modulus is 0.6-0.8mm described in the present invention, and the optimum fineness modulus is 0.7mm.
Machine-processed grain fineness number modulus is 4.0-5.0mm described in the present invention, and the optimum fineness modulus is 4.5mm.
Ballast grain sizes described in the present invention is 5-30mm.
The present invention is through the optimization of grading of aggregate; The control of sand coarse aggregate ratio and wc; The problem of the intensity that occurs when efficiently solving special fine sand concrete batching and impermeability, weather resistance, splitting resistance, workability reduction; Particularly satisfy the needs of the construction work of special fine sand repositories such as the Changjiang river, the Yellow River, basin, Jia Lingjiang River, greatly reduced the engineering construction cost.By plan of the present invention, every cubic meter of concrete need be used 490kg, and by 40 yuan of price differences per ton, every production one cubic meter of concrete has good economic benefit and social benefit with nearly 20 yuan of direct saving engineering cost.
(4) embodiment:
Prepare one ton of concrete, get 146 kilograms of PO42.5 silicate cements, (fineness modulus is 0.7mm to special fine sand; Can in the 0.6-0.8mm scope, select) 199 kilograms, 85 kilograms in machine-processed sand (fineness modulus is 4.5mm, can in the 4.0-5.0mm scope, select); 499 kilograms of rubbles (particle diameter is 5-30mm), 1 kilogram of FJW-13 high-effect water-proof agent, 70 kilograms in water; Adopt concrete batch plant to stir, can make one ton of special fine sand water-tight concrete.Show through test of many times research; Adopt the C30/P8 water-tight concrete of the present invention program's preparation; 7d ultimate compression strength is 31.0Mpa, and 28d ultimate compression strength is 39.8Mpa, and impervious turbidity is 1.1Mpa; (15 groups of test specimen MV), its intensity and impermeability, weather resistance, wear resistance, each item performance such as dry-shrinkage deformed all meet the regulation of relevant rules through test and evaluation.
Claims (4)
1. special fine sand water-tight concrete, it is characterized in that: its material component weight percent is: PO42.5 silicate cement 14.6, special fine sand 19.9, machine-processed sand 8.5, rubble 49.9, high-effect water-proof agent 0.1, water 7.0; Said special fine sand fineness modulus is 0.6-0.8mm; Said machine-processed grain fineness number modulus is 4.0-5.0mm.
2. a kind of special fine sand water-tight concrete according to claim 1, it is characterized in that: said ballast grain sizes is 5-30mm.
3. a kind of special fine sand water-tight concrete according to claim 1 is characterized in that: said special fine sand fineness modulus is 0.7mm.
4. a kind of special fine sand water-tight concrete according to claim 1, it is characterized in that: said machine-processed grain fineness number is 4.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100634966A CN101987786B (en) | 2009-08-07 | 2009-08-07 | Superfine sand penetration-resistant concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100634966A CN101987786B (en) | 2009-08-07 | 2009-08-07 | Superfine sand penetration-resistant concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101987786A CN101987786A (en) | 2011-03-23 |
| CN101987786B true CN101987786B (en) | 2012-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2009100634966A Expired - Fee Related CN101987786B (en) | 2009-08-07 | 2009-08-07 | Superfine sand penetration-resistant concrete |
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| CN (1) | CN101987786B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109053090A (en) * | 2018-10-10 | 2018-12-21 | 宁夏亿丰砼业有限公司 | A kind of superfine sand concrete |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260059A (en) | 2010-05-31 | 2011-11-30 | 北京仁创科技集团有限公司 | High-strength antiseepage concrete |
| CN104496323A (en) * | 2014-12-23 | 2015-04-08 | 苏州万盛混凝土有限公司 | Method for preparing high anti-permeability concrete |
| CN105541217A (en) * | 2015-12-14 | 2016-05-04 | 上海中冶环境工程科技有限公司 | Impermeable concrete prepared from steel slags |
| CN107555897A (en) * | 2017-08-23 | 2018-01-09 | 重庆富皇建筑工业化制品有限公司 | A kind of premixing mortar containing graduation three sand and application thereof |
| CN107459308B (en) * | 2017-09-11 | 2020-05-08 | 中国人民解放军63926部队 | High-flow anti-segregation self-compacting concrete |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844019A (en) * | 2006-04-20 | 2006-10-11 | 邵姗姗 | Novel water-tight corrosion-proof concrete material |
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2009
- 2009-08-07 CN CN2009100634966A patent/CN101987786B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844019A (en) * | 2006-04-20 | 2006-10-11 | 邵姗姗 | Novel water-tight corrosion-proof concrete material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109053090A (en) * | 2018-10-10 | 2018-12-21 | 宁夏亿丰砼业有限公司 | A kind of superfine sand concrete |
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| Publication number | Publication date |
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| CN101987786A (en) | 2011-03-23 |
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