CN113008732A - 一种测定浆体稳定度的试验方法 - Google Patents

一种测定浆体稳定度的试验方法 Download PDF

Info

Publication number
CN113008732A
CN113008732A CN202110206870.4A CN202110206870A CN113008732A CN 113008732 A CN113008732 A CN 113008732A CN 202110206870 A CN202110206870 A CN 202110206870A CN 113008732 A CN113008732 A CN 113008732A
Authority
CN
China
Prior art keywords
slurry
water
test piece
stability
sample containing
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN202110206870.4A
Other languages
English (en)
Inventor
李俊宏
霍志刚
张超兵
郝利斌
张鑫鑫
张凯
王晓芳
高山
刘艳龙
李永旺
杨培勇
杜艳兵
马占洲
吕亮
张佳琪
赵新平
郭峰
戴鹏程
温潇
张晶晶
刘敬
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.)
Huaguan Tiancheng Testing Certification Co ltd
Taiyuan Construction Engineering Quality Safety Station Taiyuan Engineering Construction Standard Quota Station
China Railway Sixth Group Co Ltd
Taiyuan Railway Construction Co Ltd of China Railway Sixth Group Co Ltd
Original Assignee
Huaguan Tiancheng Testing Certification Co ltd
Taiyuan Construction Engineering Quality Safety Station Taiyuan Engineering Construction Standard Quota Station
China Railway Sixth Group Co Ltd
Taiyuan Railway Construction Co Ltd of China Railway Sixth Group Co Ltd
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 Huaguan Tiancheng Testing Certification Co ltd, Taiyuan Construction Engineering Quality Safety Station Taiyuan Engineering Construction Standard Quota Station, China Railway Sixth Group Co Ltd, Taiyuan Railway Construction Co Ltd of China Railway Sixth Group Co Ltd filed Critical Huaguan Tiancheng Testing Certification Co ltd
Priority to CN202110206870.4A priority Critical patent/CN113008732A/zh
Publication of CN113008732A publication Critical patent/CN113008732A/zh
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/36Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

本发明涉及浆体稳定度的测定方法,具体为一种测定浆体稳定度的试验方法。该方法将制备好的浆体倒入并注满竖直放置的盛样管中,放入水泥标准养护箱养护2‑3天,将硬化后浆体柱平均划分并加工成上、中、下三段试件,测量上、下两个试件的表观密度,通过表观密度的差异情况判断浆体稳定度的好坏。本发明提供了一种测定浆体稳定度的试验方法,采用本发明方法进行浆体稳定度得测定,填补了目前现行标准中对浆体匀质性能判别方法的缺失,为自密实混凝土配合比设计提供卡控指标依据。

Description

一种测定浆体稳定度的试验方法
技术领域
本发明涉及浆体稳定度的测定方法,具体为一种测定浆体稳定度的试验方法。
背景技术
随着工程建设行业的高速发展,自密实混凝土应用范围越来越广泛,其胶凝材料体系组成也日益复杂。对于自密实混凝土一般由4至6种不同的胶凝材料组成。目前常用的胶凝材料主要包括水泥、矿渣粉、粉煤灰、硅灰、钢渣粉、石灰石粉、膨胀剂以及粘度改性材料等。由于各材料的化学组分以及物理性质均存在一定差异,例如各材料的表观密度、颗粒粒型、粒径大小都不尽相同,因此它们在浆体中,尤其是高流动性浆体中,难免会产生不均匀的沉降导致分层,造成浆体的匀质性差的现象。
然而目前国家及行业检测标准以及各类文献中,并未见到针对浆体匀质性的检测方法。并且浆体的匀质性并不能通过观察去直观的进行判断,因此发明了“浆体稳定度”的试验方法,通过测定浆体稳定度来判断浆体匀质性好坏。通过卡控浆体稳定度指标,从根本上杜绝混凝土的泌浆、离析现象。
发明内容
本发明的目的是测定浆体稳定度,通过卡控浆体稳定度指标,从根本上杜绝混凝土的泌浆、离析现象。
为实现上述目的,本发明采用的技术方案是:一种测定浆体稳定度的试验方法,包括以下步骤:将制备好的浆体倒入并注满竖直放置的盛样管中,放入水泥标准养护箱养护2-3天,将硬化后浆体柱平均划分并加工成上、中、下三段试件,测量上、下两个试件的表观密度,通过表观密度的差异情况判断浆体稳定度的好坏。本发明适用于测定浆体稳定度,对于多种胶凝材料组成的高流动性浆体,通过卡控浆体稳定度指标,可从根本上杜绝混凝土的泌浆、离析现象。
上述的一种测定浆体稳定度的试验方法,该方法具体包括以下步骤:
a、按混凝土配合比所用胶凝材料的组合比例称量胶凝材料,按照配合比水胶比及减水剂掺量,计算用水量及减水剂用量并称量;
b、将水和减水剂混合均匀加入搅拌锅、然后将胶凝材料加入;立即启动胶砂搅拌机进行搅拌;
c、将制备好的浆体缓慢均匀倒入、注满盛样管;
d、将盛样管竖直放置于固定支架上,移入水泥标准养护箱进行养护;
e、养护2-3天后,将盛样管取出,将盛样管剥除,得到圆柱型硬化浆体试件,标注清楚试件养护期间放置的方向;
f、将试件两端头部分切除舍弃,将剩余部分等分为3段,并标注清楚上、中、下;
g、使用静水天平称量上、下两个试件空气中质量m、m
h、在静水天平下挂上网篮,浸入溢流水箱的水中,调节水位,将天平调平并复零,把上、下两个试件置于网篮中,待天平稳定后立即读数,称取水中质量mw上、mw下
I、数据处理:按照下式计算上、下两个试件表观密度:
Figure BDA0002949562160000031
式中ρw为水密度;
g、按照下式计算浆体的稳定度:
Figure BDA0002949562160000032
式中:△ρ=ρ
上述的一种测定浆体稳定度的试验方法,盛样管在注满前已涂抹脱模剂。
上述的一种测定浆体稳定度的试验方法,称取上下两个试件水中质量后并测量水温度,根据测量水温查表得到水密度。
采用本发明方法进行浆体稳定度得测定,填补了目前现行标准中对浆体匀质性能判别方法的缺失,为自密实混凝土配合比设计提供卡控指标依据。
具体实施方式
本发明所述的一种测定浆体稳定度的试验方法。
(1)检测环境要求:
温度20±2℃;相对湿度不小于50%。
(2)主要仪器设备:
水泥净浆搅拌机;
静水天平:量程5000g、精度0.1g;
天平:量程2000g、精度0.01g;
盛样管:铝管,直径约25mm,长约140mm,一端开口;
温度计;
锯石机;
水泥胶砂标准养护箱。
(3)试验步骤:
a、按混凝土配合比所用胶凝材料的组合比例称量胶凝材料300g,按照配合比水胶比及减水剂掺量,计算用水量及减水剂用量并称量,称量减水剂精确至0.01g,其余材料精确至0.1g;
b、将水和减水剂混合均匀加入搅拌锅、然后将胶凝材料加入;立即启动胶砂搅拌机进行搅拌(采用自动控制搅拌程序,慢速120s,停15s,快速120s);
c、将制备好的浆体缓慢均匀倒入、注满已涂抹脱模剂的盛样管;
d、将盛样管竖直放置于固定支架上,移入水泥标准养护箱进行养护。
e、养护3d后,将盛样管取出,将盛样管铝壳剥除,得到圆柱型硬化浆体试件,标注清楚试件养护期间放置的方向;
f、将试件两端头15mm部分切除舍弃,将剩余三部分等分为3段,并标注清楚上、中、下;
g、使用静水天平称量上、下两个试件空气中质量(m、m);
h、在静水天平下挂上网篮,浸入溢流水箱的水中,调节水位,将天平调平并复零,把试件置于网篮中(注意不要使水晃动),待天平稳定后立即读数,称取水中质量(mw上、mw下),并测量水温度。
(4)数据处理:
a、按照下式计算上、下两个试件表观密度:
Figure BDA0002949562160000051
Figure BDA0002949562160000052
式中ρw为水密度,应根据测量水温查表得到。
b、按照下式计算浆体的稳定度:
Figure BDA0002949562160000053
式中:WD—砂浆稳定度(%);
△ρ=ρ
各密度计算精确至0.01g/cm3;稳定度计算精确至0.1%。

Claims (4)

1.一种测定浆体稳定度的试验方法,其特征在于:包括以下步骤:将制备好的浆体倒入并注满竖直放置的盛样管中,放入水泥标准养护箱养护2-3天,将硬化后浆体柱平均划分并加工成上、中、下三段试件,测量上、下两个试件的表观密度,通过表观密度的差异情况判断浆体稳定度的好坏。
2.根据权利要求1所述的一种测定浆体稳定度的试验方法,其特征在于:该方法具体包括以下步骤:
a、按混凝土配合比所用胶凝材料的组合比例称量胶凝材料,按照配合比水胶比及减水剂掺量,计算用水量及减水剂用量并称量;
b、将水和减水剂混合均匀加入搅拌锅、然后将胶凝材料加入;立即启动胶砂搅拌机进行搅拌;
c、将制备好的浆体缓慢均匀倒入、注满盛样管;
d、将盛样管竖直放置于固定支架上,移入水泥标准养护箱进行养护;
e、养护2-3天后,将盛样管取出,将盛样管剥除,得到圆柱型硬化浆体试件,标注清楚试件养护期间放置的方向;
f、将试件两端头部分切除舍弃,将剩余部分等分为3段,并标注清楚上、中、下;
g、使用静水天平称量上、下两个试件空气中质量m、m
h、在静水天平下挂上网篮,浸入溢流水箱的水中,调节水位,将天平调平并复零,把上、下两个试件置于网篮中,待天平稳定后立即读数,称取水中质量mw上、mw下
I、数据处理:按照下式计算上、下两个试件表观密度:
Figure FDA0002949562150000021
式中ρw为水密度;
g、按照下式计算浆体的稳定度:
Figure FDA0002949562150000022
式中:△ρ=ρ
3.根据权利要求2所述的一种测定浆体稳定度的试验方法,其特征在于:盛样管在注满前已涂抹脱模剂。
4.根据权利要求2或3所述的一种测定浆体稳定度的试验方法,其特征在于:称取上下两个试件水中质量后并测量水温度,根据测量水温查表得到水密度。
CN202110206870.4A 2021-02-24 2021-02-24 一种测定浆体稳定度的试验方法 Pending CN113008732A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110206870.4A CN113008732A (zh) 2021-02-24 2021-02-24 一种测定浆体稳定度的试验方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110206870.4A CN113008732A (zh) 2021-02-24 2021-02-24 一种测定浆体稳定度的试验方法

Publications (1)

Publication Number Publication Date
CN113008732A true CN113008732A (zh) 2021-06-22

Family

ID=76385714

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110206870.4A Pending CN113008732A (zh) 2021-02-24 2021-02-24 一种测定浆体稳定度的试验方法

Country Status (1)

Country Link
CN (1) CN113008732A (zh)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090090180A1 (en) * 2007-10-08 2009-04-09 Bryan Waugh Method of Measuring a Set Cement Density and Settling Properties
CN104237070A (zh) * 2014-10-13 2014-12-24 中国石油集团渤海钻探工程有限公司 一种确定高密度水泥浆沉降稳定性指标的装置及方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090090180A1 (en) * 2007-10-08 2009-04-09 Bryan Waugh Method of Measuring a Set Cement Density and Settling Properties
CN104237070A (zh) * 2014-10-13 2014-12-24 中国石油集团渤海钻探工程有限公司 一种确定高密度水泥浆沉降稳定性指标的装置及方法

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会: "《GB/T 19139-2012 油井水泥试验方法》", 31 December 2012 *
于永金等: "高温深井固井水泥浆稳定性探讨", 《西部探矿工程》 *
李荫余: "《建筑材料与试验》", 31 January 1988 *
黄柏宗等: "模拟井下温度压力条件的水泥浆沉降稳定性研究", 《钻井液与完井液》 *

Similar Documents

Publication Publication Date Title
Berredjem et al. Mechanical and durability properties of concrete based on recycled coarse and fine aggregates produced from demolished concrete
Kwan et al. Combined effects of water film thickness and paste film thickness on rheology of mortar
Kwan et al. Effects of fly ash microsphere on rheology, adhesiveness and strength of mortar
Li et al. Seawater cement paste: Effects of seawater and roles of water film thickness and superplasticizer dosage
Li et al. Mortar design based on water film thickness
Amer et al. Rheological and mechanical behavior of concrete made with pre-saturated and dried recycled concrete aggregates
Leemann et al. Impact of admixtures on the plastic shrinkage cracking of self-compacting concrete
Lura et al. Measuring techniques for autogenous strain of cement paste
Turk et al. Effect of limestone powder on the rheological, mechanical and durability properties of ECC
Ben Aicha et al. Correlation between bleeding and rheological characteristics of self-compacting concrete
Calvo et al. Durability performance of sustainable self compacting concretes in precast products due to heat curing
Yao et al. Retardation and bridging effect of anionic polyacrylamide in cement paste and its relationship with early properties
Lin et al. Effect of viscosity modifying agent on plastic shrinkage cracking of cementitious composites
Bourguiba et al. Effects of recycled sand on the properties and durability of polymer and cement based mortars
Mohan et al. High-performance cementitious grout with fly ash for corrosion protection of post-tensioned concrete structures
Chen et al. Triple blending with fly ash microsphere and condensed silica fume to improve performance of cement paste
ES2807188T3 (es) Material moldeable en base a un aglutinante cementoso con resistencia a la contracción
CN113008732A (zh) 一种测定浆体稳定度的试验方法
CN105699253A (zh) 一种快速鉴定混凝土掺和料与外加剂适应性的方法
Wright ENTRAINED AIR IN CONCRETE.
CN111829474A (zh) 一种生态多孔混凝土骨料浆体包裹层厚度测试方法
Schmidt et al. Effects of superplasticizer and viscosity-modifying agent on fresh concrete performance of SCC at varied ambient temperatures
JP2015120308A (ja) コンクリートの製造方法
CN110567847A (zh) 聚羧酸混凝土外加剂性能指标快速对比测试方法
Bentz et al. X-ray absorption studies of drying of cementitious tile adhesive mortars

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20210622

RJ01 Rejection of invention patent application after publication