WO2019071704A1 - Béton de base composite à faible plasticité et couche imperméable de barrage en béton compacté au rouleau produite à partir de celui-ci - Google Patents

Béton de base composite à faible plasticité et couche imperméable de barrage en béton compacté au rouleau produite à partir de celui-ci Download PDF

Info

Publication number
WO2019071704A1
WO2019071704A1 PCT/CN2017/111064 CN2017111064W WO2019071704A1 WO 2019071704 A1 WO2019071704 A1 WO 2019071704A1 CN 2017111064 W CN2017111064 W CN 2017111064W WO 2019071704 A1 WO2019071704 A1 WO 2019071704A1
Authority
WO
WIPO (PCT)
Prior art keywords
low
concrete
plastic composite
parts
reducing agent
Prior art date
Application number
PCT/CN2017/111064
Other languages
English (en)
Chinese (zh)
Inventor
谢祥明
Original Assignee
广东水电二局股份有限公司
广东粤水电勘测设计有限公司
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 广东水电二局股份有限公司, 广东粤水电勘测设计有限公司 filed Critical 广东水电二局股份有限公司
Publication of WO2019071704A1 publication Critical patent/WO2019071704A1/fr

Links

Images

Classifications

    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/16—Sealings or joints
    • 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
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
    • 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Definitions

  • the invention relates to a low plastic composite foundation concrete and an anti-seepage layer of a roller compacted concrete dam prepared therefrom.
  • Roller compacted concrete is a dry hard cement-depleted concrete, which is made of Portland cement, pozzolanic admixture, water, admixture, sand and graded coarse aggregate.
  • the dam is the same.
  • the RCC dam is a dam type often used in water conservancy and hydropower projects. It has the characteristics of small volume, high strength, good anti-seepage performance, overflow of the dam body, and simple, fast and economical construction procedures.
  • the RCC dam is generally composed of three parts: the water-repellent surface anti-seepage layer, the rich slurry RCC anti-seepage area and the RCC main body area.
  • the anti-seepage layer on the water surface generally adopts the metamorphic concrete process of rolling concrete on-site grouting, the quality fluctuation is large, the quality defects and leakage often occur, and the thickness of the anti-seepage zone of the rich RCC is required to reach 4 ⁇ 6m can meet the anti-seepage requirements, it is not economical, it will lead to the difficulty of temperature control of the dam and the increase of the probability of cracks, and the safety hazard will increase.
  • the object of the present invention is to provide a low-plastic composite-based concrete and an anti-seepage layer for a RCC dam prepared therefrom.
  • a low-plastic composite-based concrete composed of the following raw materials:
  • Polypropylene fiber 2.0 to 2.5 parts
  • Water reducing agent 2.0 to 2.5 parts
  • Air entraining agent 0.05 to 0.10 parts
  • Shrinkage reducing agent 2.5 to 5.0 parts.
  • the cement is P.O42.5 ordinary Portland cement.
  • the sand is at least one of natural river sand and artificial sand.
  • the crushed stone is at least one of granite and limestone.
  • the polypropylene fiber has a diameter of 30 to 40 ⁇ m, a length of 15 to 20 mm, and a tensile strength of 500 to 700 MPa.
  • the water reducing agent is a polycarboxylic acid type water reducing agent.
  • the shrinkage reducing agent is a polyether shrinkage reducing agent.
  • An anti-seepage layer of a roller compacted concrete dam is prepared by the following construction methods:
  • the invention has the beneficial effects that the low-plastic composite-based concrete of the invention has excellent self-generated volume deformation, impermeability, tensile strength and the like, and the anti-seepage and anti-seepage effect of the anti-seepage layer of the RCC dam prepared therefrom is good.
  • the thickness of the anti-seepage layer is significantly reduced, which is favorable for temperature control and crack prevention.
  • the low-plastic composite-based concrete of the invention adopts a mixing building for centralized mixing, and can accurately control the mixing ratio parameter of the concrete, and the quality is better than that of the grouted metamorphic concrete;
  • the thickness of the anti-seepage layer of the RCC dam of the present invention only needs 25 to 35 cm to meet the actual demand, which is far lower than the 50-60 cm of the anti-seepage layer of the conventional RCC dam, which is favorable for temperature control and crack prevention;
  • the anti-seepage performance of the anti-seepage layer of the RCC dam of the invention is excellent, and the thickness of the anti-seepage zone of the rich RCC can be reduced from the conventional 4-6m to 2 ⁇ 3m, which saves materials and reduces the cost.
  • Figure 1 is a schematic view of the structure of a roller compacted concrete dam.
  • a low-plastic composite-based concrete composed of the following raw materials:
  • Polypropylene fiber 2.0 to 2.5 parts
  • Water reducing agent 2.0 to 2.5 parts
  • Air entraining agent 0.05 to 0.10 parts
  • Shrinkage reducing agent 2.5 to 5.0 parts.
  • the cement is P.O42.5 ordinary Portland cement.
  • the sand is at least one of natural river sand and artificial sand.
  • the crushed stone is at least one of granite and limestone.
  • the polypropylene fiber has a diameter of 30 to 40 ⁇ m, a length of 15 to 20 mm, and a tensile strength of 500 to 700 MPa.
  • the water reducing agent is a polycarboxylic acid type water reducing agent.
  • the shrinkage reducing agent is a polyether shrinkage reducing agent.
  • An anti-seepage layer of a roller compacted concrete dam is prepared by the following construction methods:
  • the structural schematic diagram of the RCC dam is shown in Figure 1, including the water-repellent surface impermeable layer 10, the rich RCC anti-seepage zone 20 and the RCC dam main body zone 30.
  • a low-plastic composite-based concrete whose raw material composition is as follows:
  • Table 1 Table of raw material composition of a low-plastic composite-based concrete
  • a low-plastic composite-based concrete whose raw material composition is as follows:
  • Table 2 Table of raw material composition of a low-plastic composite-based concrete
  • a low-plastic composite-based concrete whose raw material composition is as follows:

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Road Paving Structures (AREA)

Abstract

L'invention concerne un béton de base composite à faible plasticité et une couche imperméable de barrage en béton compacté au rouleau préparée à partir de celui-ci, le béton étant produit à partir d'eau, de ciment, de cendres volantes, de sables bitumineux, de pierres cassées ayant un diamètre compris entre 5 et 20 mm, de pierres cassées ayant un diamètre compris entre 20 et 40 mm, de fibres de polypropylène, d'un réducteur d'eau, d'un agent entraîneur d'air et d'un réducteur de retrait. La couche imperméable de barrage en béton compacté au rouleau est préparée au moyen du procédé de construction suivant : 1) mélange du béton de base composite à faible plasticité ; et 2) pavage simultané à l'aide du béton de base composite à faible plasticité et du béton compacté au rouleau ordinaire, la réalisation d'une vibration mixte verticale et inclinée sur le béton de base composite à faible plasticité, la condensation du béton de base composite à faible plasticité pour obtenir une couche imperméable, et la condensation du béton compacté au rouleau ordinaire pour obtenir un corps principal de barrage. Le béton de base composite à faible plasticité présente d'excellentes performances telles qu'une déformation de volume auto-générée, une imperméabilité et une résistance à la traction, et la couche imperméable de barrage en béton compacté au rouleau préparée à partir de celle-ci présente les avantages d'une bonne résistance à la fissuration, d'un bon effet d'étanchéité, d'une épaisseur remarquablement réduite, et de facilitation de la régulation de température et de la prévention des fissures.
PCT/CN2017/111064 2017-10-13 2017-11-15 Béton de base composite à faible plasticité et couche imperméable de barrage en béton compacté au rouleau produite à partir de celui-ci WO2019071704A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710950501.X 2017-10-13
CN201710950501.XA CN107827411A (zh) 2017-10-13 2017-10-13 一种低塑性复合基混凝土及由其制备的碾压混凝土坝防渗层

Publications (1)

Publication Number Publication Date
WO2019071704A1 true WO2019071704A1 (fr) 2019-04-18

Family

ID=61648127

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/111064 WO2019071704A1 (fr) 2017-10-13 2017-11-15 Béton de base composite à faible plasticité et couche imperméable de barrage en béton compacté au rouleau produite à partir de celui-ci

Country Status (2)

Country Link
CN (1) CN107827411A (fr)
WO (1) WO2019071704A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109553333A (zh) * 2019-01-12 2019-04-02 武汉中阳明建材有限公司 一种碾压混凝土及其制备方法
CN109779370B (zh) * 2019-02-26 2020-10-30 武汉大学 一种基于空心玻璃微珠的水下抗爆复合防护结构及其施工方法
CN114988812B (zh) * 2022-06-24 2023-03-07 山东水总有限公司 一种拱坝施工用抗裂混凝土及其施工工艺

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1152054A (zh) * 1996-09-28 1997-06-18 山东虎山实业集团有限公司 水泥防裂用聚丙烯纤维
JP2001207442A (ja) * 2000-01-31 2001-08-03 Taiheiyo Cement Corp 矢 板
CN101058495A (zh) * 2007-05-25 2007-10-24 武永新 用于碾压混凝土坝的微坍落度混凝土及其施工方法
CN102584140A (zh) * 2012-01-19 2012-07-18 中交上海三航科学研究院有限公司 一种码头面层抗裂混凝土及其制备方法
CN103304190A (zh) * 2013-06-14 2013-09-18 浙江建设职业技术学院 一种屋面防水层浇注用高抗渗抗裂保护层及其制作工艺

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105887770A (zh) * 2016-06-08 2016-08-24 天津大学 一种适用于碾压混凝土重力坝上游面的功能梯度结构

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1152054A (zh) * 1996-09-28 1997-06-18 山东虎山实业集团有限公司 水泥防裂用聚丙烯纤维
JP2001207442A (ja) * 2000-01-31 2001-08-03 Taiheiyo Cement Corp 矢 板
CN101058495A (zh) * 2007-05-25 2007-10-24 武永新 用于碾压混凝土坝的微坍落度混凝土及其施工方法
CN102584140A (zh) * 2012-01-19 2012-07-18 中交上海三航科学研究院有限公司 一种码头面层抗裂混凝土及其制备方法
CN103304190A (zh) * 2013-06-14 2013-09-18 浙江建设职业技术学院 一种屋面防水层浇注用高抗渗抗裂保护层及其制作工艺

Also Published As

Publication number Publication date
CN107827411A (zh) 2018-03-23

Similar Documents

Publication Publication Date Title
CN105298133B (zh) 提升大体积混凝土底板抗裂性的设计施工方法
CN104018409B (zh) 一种可持续性的混合型透水混凝土铺面结构
CN105801053A (zh) 一种大掺量粉煤灰c40自密实混凝土
CN107673699B (zh) 一种高强高透水率混凝土及其制备方法
KR101692691B1 (ko) 친환경 콘크리트 옹벽 블록 조성물 및 이를 이용하여 제조된 친환경 콘크리트 옹벽 블록
WO2019071704A1 (fr) Béton de base composite à faible plasticité et couche imperméable de barrage en béton compacté au rouleau produite à partir de celui-ci
Li et al. Impact of different lithological manufactured sands on high-speed railway box girder concrete
CN110590294A (zh) 一种良好耐久性的再生粉体混凝土及制备方法
CN106186959B (zh) 一种再生微粉砂浆及其制备方法
CN107619297A (zh) 一种尾矿陶粒轻质透水砖及其制备方法
CN106278350A (zh) 一种碱渣建筑垃圾透水砖及其制备方法
CN108442724B (zh) 一种土遗址裂隙修复方法
CN109650800A (zh) 一种衬砌管片用混凝土及其制备方法
CN209412630U (zh) 基于建筑垃圾粉碎料的通孔透水砖
CN103803920B (zh) 一种堆石混凝土
CN105544337A (zh) 一种道路施工方法
Shaaban Sustainability of excavation soil and red brick waste in rammed earth
CN108585677A (zh) 一种超高强玄武岩纤维复合混凝土及其制备方法
CN105803942B (zh) 一种混凝土的糙化方法
CN106242449A (zh) 一种矿渣建筑垃圾透水砖及其制备方法
CN110171943A (zh) 一种海绵城市人行道透水砖及其制备方法
Shen et al. The carbonation of cement-based materials with different aggregate content
CN108546015A (zh) 一种适用于型钢混凝土结构的复合混凝土及其制备方法
CN113929402A (zh) 一种采空区充填方法
Meera et al. Performance evaluation of marble powder and fly ash concrete for non-structural applications

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17928126

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17928126

Country of ref document: EP

Kind code of ref document: A1