WO2020173116A1 - 工程渣土替代天然砂制备的水泥砂土浆及制备方法与应用 - Google Patents
工程渣土替代天然砂制备的水泥砂土浆及制备方法与应用 Download PDFInfo
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- WO2020173116A1 WO2020173116A1 PCT/CN2019/114528 CN2019114528W WO2020173116A1 WO 2020173116 A1 WO2020173116 A1 WO 2020173116A1 CN 2019114528 W CN2019114528 W CN 2019114528W WO 2020173116 A1 WO2020173116 A1 WO 2020173116A1
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- engineering
- cement
- sand
- soil
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions 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
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/36—Inorganic materials not provided for in groups C04B14/022 and C04B14/04 - C04B14/34
- C04B14/361—Soil, e.g. laterite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0046—Premixtures of ingredients characterised by their processing, e.g. sequence of mixing the ingredients when preparing the premixtures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/60—Flooring materials
Definitions
- the invention relates to the field of construction material technology and construction waste resource utilization, in particular to a cement sand slurry prepared by replacing natural sand with engineering waste soil, and a preparation method and application.
- the purpose of the present invention is to provide a cement sand slurry prepared by replacing natural sand with engineering slag, and a preparation method and application thereof.
- the invention provides a formula and method for preparing cement sand slurry by replacing natural sand with engineering slag, which can be used to solve the problem of low replacement rate, complex process, high energy consumption, and poor mechanical performance and working performance of existing engineering slag resource utilization methods. Good and other issues.
- the invention provides a method for preparing cement sand slurry by replacing natural sand with engineering waste soil, including the following steps:
- step (3) Put the C group engineering slag obtained in step (2) into the grinder, rotate and mix evenly, grind 2-3 times with the long and short superimposed blades, each grinding time is 3-8 seconds; during the grinding process Shake constantly, and vibrate evenly after each grinding;
- step (1) is weathered granite soil
- the weathered granite soil is the most common engineering slag produced during basic engineering, underground engineering, and subway construction.
- step (2) it is divided into three groups A, B, and C according to the particle size.
- the particle size of the engineering residue of group A is 0-0.25mm
- the particle size of the engineering residue of group B is 0.25mm-2.0mm
- the particle size of C group engineering slag is greater than 2.0mm.
- the particle size of the engineering slag after sieving in step (4) is 0.25 mm-4.75 mm.
- the particle size is the diameter of the particle, which is used to describe the size of the particle.
- the sand-soil mixture in step (6) in terms of parts by mass, includes the following raw materials:
- step (7) the stirring rate is 60 ⁇ 10 r/min, and the stirring time is 1-2 minutes.
- the method provided by the present invention replaces part of the natural sand with a large amount of engineering slag, which can reduce the demand for natural sand in engineering construction, thereby reducing the serious damage to the natural environment caused by sand mining operations;
- the method provided by the present invention only needs to grind the engineering waste to the particle size range of natural sand, and does not need to It is deeply ground to cement fineness, so grinding energy consumption can be significantly reduced;
- a cement sand slurry prepared by the method provided by the present invention that replaces natural sand with engineering waste soil has excellent working performance and mechanical properties compared with the existing ordinary cement mortar.
- Fig. 2 is a graph showing changes in bending strength of cement sand slurry prepared in Examples 1-3 and Comparative Example 1 at 7d, 14d, and 28d as a function of engineering residue replacement rate;
- Fig. 3 is a graph showing the change of the compressive strength of cement sand slurry 7d, 14d, and 28d as a function of the replacement rate of engineering waste soil prepared in Examples 1-3 and Comparative Example 1.
- the engineering muck used in the embodiment of the present invention is granite weathered soil taken from the foundation pit of block A of the "Village in the City" reconstruction project of Xintang Company and Xinhe Company in Tianhe District, Guangzhou City.
- the water reducing agent used in the examples and comparative examples is an aqueous solution of RPC-H polycarboxylic acid water reducing agent produced by Guangdong Daoming Railway Equipment Co., Ltd., with a mass percentage concentration of 8%-12%; examples and
- the cement used in the comparative example was Yuexiu brand P II 42.5R cement produced by Guangzhou Zhujiang Cement Co., Ltd.; the natural sand after screening meets the requirements of "GB/T 14684-2011 Sand for Construction".
- the granite weathered soil after drying is sieved into three groups A, B, and C according to the particle size. After screening, the particle size of the weathered granite soil in group A is 0-0.25mm, and the particle size of weathered granite soil in group B is 0.25mm-2.0mm, the grain size of weathered granite soil in group C is greater than 2.0mm, discard group A;
- step (3) Put the C group granite weathered soil obtained in step (2) into a high-speed grinder (motor speed is 35000-40000r/min), rotate and mix uniformly, and grind 3 times with the long and short laminated blades, each grinding time is 6 Seconds, keep shaking during the grinding process, and vibrate evenly after each grinding;
- a high-speed grinder motor speed is 35000-40000r/min
- step (4) The sieved weathered granite soil obtained in step (4) is evenly mixed with the weathered granite soil of Group B to form the weathered granite soil;
- the granite weathered soil after drying is sieved into three groups A, B, and C according to the particle size. After screening, the particle size of the weathered granite soil in group A is 0-0.25mm, and the particle size of weathered granite soil in group B is 0.25mm-2.0mm, the grain size of weathered granite soil in group C is greater than 2.0mm, discard group A;
- step (3) Put the C group granite weathered soil obtained in step (2) into a high-speed grinder (motor speed is 35000-40000r/min), rotate and mix uniformly, and grind 3 times with the long and short laminated blades, each grinding time is 3 times Seconds, keep shaking during the grinding process, and vibrate evenly after each grinding;
- a high-speed grinder motor speed is 35000-40000r/min
- step (4) The sieved weathered granite soil obtained in step (4) is evenly mixed with the weathered granite soil of Group B to form the weathered granite soil;
- the 7d, 14d, 28d flexural strength of the cement mortar made in Example 1 is 3%, 6%, 7% higher than that of the cement mortar made in Comparative Example 1;
- the flexural strengths of the mortar slurry (replacement rate 50%) and the cement mortar slurry prepared in Example 3 (replacement rate 70%) at 7d, 14d, and 28d are almost the same as those of the cement mortar prepared in Comparative Example 1.
- Fig. 3 is the change curve of the compressive strength of the cement mortars 7d, 14d, 28d prepared in Examples 1-3 and Comparative Examples with the replacement rate of weathered granite soil.
- the replacement rate of weathered granite soil on the abscissa in Figure 3 represents the mass percentage of natural sand replaced by granite differentiated soil.
- the 7d, 14d, and 28d compressive strengths of the cement mortar made in Example 1 are almost the same as those of the cement mortar made in Comparative Example 1; %) and the cement mortar made in Example 3 (replacement rate 70%) at 7d, 14d, and 28d, the compressive strength is only slightly lower than that of the cement mortar made in Comparative Example 1.
- the present invention provides a method for preparing cement sand slurry by replacing natural sand with engineering slag.
- the engineering slag can be used to replace natural sand as the raw material of cement sand slurry, and the replacement rate can be as high as 70%; on the one hand, it makes full use of the huge amount of engineering dregs that cause certain pollution to the environment, and realizes the resource utilization of construction waste; on the other hand, it can save precious river sand resources, protect the ecological environment, and ensure the sand Under the premise of excellent working performance and mechanical properties, the production cost and the processing cost of granite weathered soil are reduced, and there are good economic and social benefits.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
Description
试件组编号 | 实施例1 | 实施例2 | 实施例3 | 对比例1 |
稠度/mm | 60 | 71 | 75 | 53 |
Claims (10)
- 一种工程渣土替代天然砂制备水泥砂土浆的方法,其特征在于,包括以下步骤:(1)在温度为105±5℃条件下将工程渣土烘干至恒重;(2)将烘干后的工程渣土按粒径大小筛分成A、B、C三组;(3)将步骤(2)得到的C组工程渣土放入研磨仪中,研磨2-3次,每次研磨的时间为3-8秒;(4)对研磨后的C组工程渣土进行筛分处理,得到筛分后的工程渣土;(5)将步骤(4)得到的筛分后的工程渣土与B组工程渣土混合,形成再生工程渣土;(6)将步骤(5)得到的再生工程渣土与筛分后的天然砂混合,投入砂浆搅拌机中,搅拌处理,形成砂土混合物,取出备用;(7)称取水、水泥、砂土混合物以及减水剂;将砂土混合物与减水剂分别均匀分为两份,将水和水泥投入砂浆搅拌机中,搅拌,形成水泥浆;然后加入一份砂土混合物与一份减水剂,搅拌;再加入另一份砂土混合物与另一份减水剂,搅拌,制得所述工程渣土替代天然砂制备的水泥砂土浆。
- 根据权利要求1所述的制备方法,其特征在于,步骤(1)中所述工程渣土为基础工程、地下工程和地铁建设过程中所产生的花岗岩风化土。
- 根据权利要求1所述的制备方法,其特征在于,步骤(2)中所述按粒径大小筛分成A、B、C三组,筛分后A组的工程渣土粒径为0-0.25mm,B组的工程渣土粒径为0.25mm-2.0mm,C组的工程渣土粒径大于2.0mm。
- 根据权利要求1所述的制备方法,其特征在于,步骤(3)中所述研磨仪的电机转速为35000-40000r/min;步骤(4)中所述筛分后的工程渣土的粒径为0.25mm-4.75mm。
- 根据权利要求1所述的制备方法,其特征在于,步骤(6)中所述砂土混合物,按照质量份数计,包括如下的原料:再生工程渣土 30-70份;筛分后的天然砂 30-70份;所述筛分后的天然砂的粒径为0.25mm-4.75mm。
- 根据权利要求1所述的制备方法,其特征在于,步骤(6)中所述搅拌处理的搅拌速率为60±10r/min,搅拌的时间为1-3分钟;步骤(7)中所述搅拌的速率均为60±10r/min,搅拌的时间均为1-2分钟。
- 根据权利要求1所述的制备方法,其特征在于,步骤(7)中所述工程渣土替代天然砂制备的水泥砂土浆,按照质量份数计,包括如下的原料:水 212-275份;水泥 650-700份;砂土混合物 1600-1650份;减水剂 10-80份。
- 根据权利要求1所述的制备方法,其特征在于,步骤(7)中所述水泥为普通硅酸盐水泥;步骤(7)中所述减水剂为聚羧酸减水剂的水溶液,质量分数百分比浓度为8%-12%。
- 一种由权利要求1-8任一项所述的制备方法制备的水泥砂土浆。
- 权利要求9所述的一种工程渣土替代天然砂制备的水泥砂土浆,应用于土木工程领域。
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US17/279,610 US20220033303A1 (en) | 2019-02-25 | 2019-10-31 | Cement mortar containing excavated soil prepared by replacing natural sand with engineering soil, and preparation method therefor and application thereof |
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CN201910143702.8A CN109721310B (zh) | 2019-02-25 | 2019-02-25 | 工程渣土替代天然砂制备的水泥砂土浆及制备方法与应用 |
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CN109721310B (zh) * | 2019-02-25 | 2021-11-23 | 华南理工大学 | 工程渣土替代天然砂制备的水泥砂土浆及制备方法与应用 |
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CN114456812A (zh) * | 2022-01-07 | 2022-05-10 | 福州大学 | 利用带有花岗岩残积土的粘性土渣土制备砂土渣土改良剂的方法、渣土改良剂及使用方法 |
CN115159885B (zh) * | 2022-06-02 | 2023-09-26 | 华南理工大学 | 一种混合建设用砂和粘土砂及其制备方法与应用 |
CN115385612A (zh) * | 2022-09-13 | 2022-11-25 | 深圳市衡骏环保科技有限公司 | 一种工程弃土再生轻质墙板及其制备方法 |
CN115627877A (zh) * | 2022-09-19 | 2023-01-20 | 华南理工大学 | 一种内置压实型水泥土节段的钢管混凝土柱及其施工方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5370185A (en) * | 1993-09-08 | 1994-12-06 | Shell Oil Company | Mud solidification with slurry of portland cement in oil |
CN104261715A (zh) * | 2014-08-27 | 2015-01-07 | 广东新谷科技有限公司 | 一种建筑废弃物回收工艺 |
CN108409227A (zh) * | 2018-02-02 | 2018-08-17 | 中交第二航务工程局有限公司 | 利用泥水盾构弃浆弃砂联合配制壁后注浆材料方法 |
CN108569854A (zh) * | 2018-03-30 | 2018-09-25 | 广东怡兴食品有限公司 | 建筑垃圾处理工艺及所得再生细骨料和再生砂的应用 |
CN109721310A (zh) * | 2019-02-25 | 2019-05-07 | 华南理工大学 | 工程渣土替代天然砂制备的水泥砂土浆及制备方法与应用 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1134403A (zh) * | 1995-04-24 | 1996-10-30 | 上海三井·英凡特工艺品有限公司 | 泥土、海砂、建筑渣土等工业废料制做的混凝土 |
CN103496896A (zh) * | 2013-09-18 | 2014-01-08 | 安固环保科技有限公司 | 一种非烧结渣土墙体块材及其制备工艺 |
CN103864378B (zh) * | 2014-01-23 | 2016-02-03 | 湖南科技大学 | 利用废弃瓷砖生产的再生砂浆及其制备方法 |
CN103979889B (zh) * | 2014-05-08 | 2015-09-30 | 山东大学 | 一种利用黄河淤沙和建筑渣土制备河道岸基根石的方法 |
CN106830841B (zh) * | 2017-02-22 | 2019-06-21 | 深圳市航天新材科技有限公司 | 一种含铝托勃莫来石蒸压渣土实心砖及其快速制备方法 |
CN108609939A (zh) * | 2018-07-23 | 2018-10-02 | 南京嘉怡装饰设计有限公司 | 抗渗水泥砂浆 |
CN109231897A (zh) * | 2018-08-21 | 2019-01-18 | 中国地质大学(武汉) | 一种盾构渣土无害化、资源化处理方法 |
-
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- 2019-02-25 CN CN201910143702.8A patent/CN109721310B/zh active Active
- 2019-10-31 WO PCT/CN2019/114528 patent/WO2020173116A1/zh active Application Filing
- 2019-10-31 US US17/279,610 patent/US20220033303A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5370185A (en) * | 1993-09-08 | 1994-12-06 | Shell Oil Company | Mud solidification with slurry of portland cement in oil |
CN104261715A (zh) * | 2014-08-27 | 2015-01-07 | 广东新谷科技有限公司 | 一种建筑废弃物回收工艺 |
CN108409227A (zh) * | 2018-02-02 | 2018-08-17 | 中交第二航务工程局有限公司 | 利用泥水盾构弃浆弃砂联合配制壁后注浆材料方法 |
CN108569854A (zh) * | 2018-03-30 | 2018-09-25 | 广东怡兴食品有限公司 | 建筑垃圾处理工艺及所得再生细骨料和再生砂的应用 |
CN109721310A (zh) * | 2019-02-25 | 2019-05-07 | 华南理工大学 | 工程渣土替代天然砂制备的水泥砂土浆及制备方法与应用 |
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