CN101948287B - 一种干法脱硫灰稳定碎石 - Google Patents

一种干法脱硫灰稳定碎石 Download PDF

Info

Publication number
CN101948287B
CN101948287B CN2010105084876A CN201010508487A CN101948287B CN 101948287 B CN101948287 B CN 101948287B CN 2010105084876 A CN2010105084876 A CN 2010105084876A CN 201010508487 A CN201010508487 A CN 201010508487A CN 101948287 B CN101948287 B CN 101948287B
Authority
CN
China
Prior art keywords
dry
dry method
fly ash
gravel
method desulfurized
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.)
Active
Application number
CN2010105084876A
Other languages
English (en)
Other versions
CN101948287A (zh
Inventor
杨利香
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.)
Shanghai Building Science Research Institute Group Co Ltd
Original Assignee
Shanghai Building Science Research Institute 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 Shanghai Building Science Research Institute Group Co Ltd filed Critical Shanghai Building Science Research Institute Group Co Ltd
Priority to CN2010105084876A priority Critical patent/CN101948287B/zh
Publication of CN101948287A publication Critical patent/CN101948287A/zh
Application granted granted Critical
Publication of CN101948287B publication Critical patent/CN101948287B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • C04B2111/00017—Aspects relating to the protection of the environment
    • 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
    • C04B2111/00034—Physico-chemical characteristics of the mixtures
    • C04B2111/00215—Mortar or concrete mixtures defined by their oxide composition
    • 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
    • C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
    • 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
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
    • 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
    • C04B2111/2038—Resistance against physical degradation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Road Paving Structures (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

本发明公开了一种干法脱硫灰稳定碎石，所述干法脱硫灰稳定碎石由下列组成物及重量比组成：激励剂0.1~8.0%，干法脱硫灰9.0%~30.0%，碎石62%.0~90.0%，以上各组成之和为100%。其中激励剂选自普通硅酸盐水泥。本发明的干法脱硫灰稳定碎石施工性能好，抗压强度高，7d抗压强度可满足高速、一级公路和二级及二级以下公路水泥稳定碎石抗压强度要求，且具有一定的微膨胀性，可有效减少路面基层收缩裂纹。本发明不但解决了干法脱硫灰安全处置的问题，同时也减轻了干法脱硫灰对环境的污染，变废为宝，创造经济效益。

Description

一种干法脱硫灰稳定碎石
技术领域
本发明涉及一种干法脱硫灰稳定碎石，属于道路工程材料技术领域。
背景技术
近几年来，随着我国火电行业烟气脱硫的普及，脱硫副产物成为了又一大工业固废材料。这些脱硫副产物堆积户外，占用土地，同时还有可能再次释放SO2，破坏生态环境。本发明所述干法脱硫灰就是干法烟气脱硫工艺的产物。干法脱硫灰不同于一般粉煤灰，其具有高钙高硫性，另外它含有多种对水泥、混凝土安定性、耐久性不利的因素，如过高的SO3、f-CaO含量，特有的CaSO3成分，接近标准极限的烧失量等。
现有的道路铺设技术一般采用水泥稳定碎石，二灰稳定碎石，需要消耗大量的水泥、石灰，产生石灰匮乏、废弃物排放量大等问题，不符合可持续发展的问题。因此，开展干法脱硫灰的路用性能研究，探索干法脱硫灰从废弃物变成资源的发展道路，对道路建设、电厂安全运行、改善环境、发展循环经济均具有重要意义。
发明内容
本发明的目的是为了提供一种干法脱硫灰稳定碎石，以实现干法脱硫灰的资源化利用，同时减少道路工程对石灰、水泥的过度消耗。
本发明的目的可以通过以下技术方案来实现。
一种干法脱硫灰稳定碎石，按重量百分比计，其组成和含量如下：
激励剂0.1~8.0%  
干法脱硫灰9.0%~30.0%
碎石62.0%~90.0%
所述的所述的干法脱硫灰为干法烟气脱硫工艺产生的干法脱硫灰，28d强度活性大于60%（依据GB 1596测试）。
所述的激励剂为普通硅酸盐水泥。具体配制方法依据公路工程无机结合料稳定材料试验规程进行。
a) 提供普通硅酸盐水泥、干法脱硫灰、碎石；b）采用重型击实试验确定普通硅酸盐水泥、干法脱硫灰混合料最大干密度；c）依据最大干密度，采用静压法成型试块，进行无侧限抗压强度，确定普通硅酸盐水泥、干法脱硫灰合适配比；d)按照公路工程无机结合料稳定材料试验规程，进行无机结合料的击实实验，确定普通硅酸盐水泥、干法脱硫灰、碎石混合料（普通硅酸盐水泥：干法脱硫灰：碎石=0.1~8.0%：9.0%~30.0%：62.0%~90.0%）的最大干密度；e）确定干法脱硫灰稳定碎石合适配比。
本发明的优点是施工性能好，抗压强度高，其7d强度能够满足高速、一级公路和二级及二级以下公路水泥稳定碎石抗压强度要求，且具有一定的微膨胀性，可有效减少路面基层收缩裂纹。
具体实施方式
下面结合具体实施例进一步阐述本发明的技术特点。
本发明用干法脱硫灰为上海宝田新型建材有限公司提供，其主要物化性能见表1、表2；
Figure 2010105084876100002DEST_PATH_IMAGE002
。
以下参照实施例，对本发明作进一步的说明。但应当认为，实施例仅是说明性，而不应对本发明的保护范围起限制作用。
实施例1
本实施例采用石灰作激励剂，石灰：干法脱硫灰（重量比）=1:3和1:4，并与二灰结合料作比较，采用室内击实试验确定最大干密度、最佳含水率，见表3；
Figure 2010105084876100002DEST_PATH_IMAGE004
。
依据最大干密度用静压法制备试件，测试石灰-干法脱硫灰结合料的无侧限抗压强度，养生的最后一天，将试件浸泡在水中，再测试的称为湿压，养生期间不在水中浸泡而直接测试的称为干压。试验结果列于表4；
Figure 2010105084876100002DEST_PATH_IMAGE006
。
试验表明：
1）干压时石灰-干法脱硫灰结合料具有一定强度；
2）石灰-干法脱硫灰结合料试件在水中浸泡一天后全部崩解，而二灰结合料试件完好无损。
因此，用干法脱硫灰代替普通粉煤灰做二灰碎石基层不可行。
实施例2
本实施例采用水泥作激励剂，水泥：干法脱硫灰（重量比）=1:3和1:4，并与水泥-普通粉煤灰结合料作比较，采用室内击实试验确定最大干密度、最佳含水率，见表5；
Figure 2010105084876100002DEST_PATH_IMAGE008
。
依据最大干密度用静压法制备试件，测试水泥-干法脱硫灰结合料的无侧限抗压强度，试验结果列于表6；
Figure 2010105084876100002DEST_PATH_IMAGE010
。
试验表明：
水泥对干法脱硫灰的激励效果优，在水泥:干法脱硫灰=1:3的情况下，7d的湿压强度比水泥-普通粉煤灰的大88%。
实施例3
本实施例采用水泥作为激励剂，进行水泥干法脱硫灰碎石试验。水泥:干法脱硫灰=1:9，结合料:集料=20:80。试验结果见表7；
Figure 2010105084876100002DEST_PATH_IMAGE012
。
由表可知：
1）随着龄期的增长，试件的强度也随之增长，与延迟无关，且14d强度均为7d强度的1.9倍左右。
2）温度对试件强度的影响很大：35℃的养生温度下的强度是25℃养生温度下的4倍左右，且试件的强度都大于规范要求的0.5MPa。
以上所述仅为本发明的优选实施例，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有更改和变化。凡在本发明的精神和原则之内，所作的任何修改、改进等，均应包括在本发明的保护范围之内。

Claims (3)

1.一种干法脱硫灰稳定碎石，其特征在于：按重量百分比计，其组成和含量如下：
激励剂 0.1～8.0%
干法脱硫灰 9.0%～30.0%
碎石 62.0%～90.0%。
2.根据权利要求1所述的干法脱硫灰稳定碎石，其特征在于：所述的干法脱硫灰为干法烟气脱硫工艺产生的干法脱硫灰，28d强度活性大于60%。
3.根据权利要求1所述的干法脱硫灰稳定碎石，其特征在于：所述的激励剂为普通硅酸盐水泥。
CN2010105084876A 2010-10-15 2010-10-15 一种干法脱硫灰稳定碎石 Active CN101948287B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010105084876A CN101948287B (zh) 2010-10-15 2010-10-15 一种干法脱硫灰稳定碎石

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010105084876A CN101948287B (zh) 2010-10-15 2010-10-15 一种干法脱硫灰稳定碎石

Publications (2)

Publication Number Publication Date
CN101948287A CN101948287A (zh) 2011-01-19
CN101948287B true CN101948287B (zh) 2013-01-23

Family

ID=43451937

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010105084876A Active CN101948287B (zh) 2010-10-15 2010-10-15 一种干法脱硫灰稳定碎石

Country Status (1)

Country Link
CN (1) CN101948287B (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102249628B (zh) * 2011-06-03 2012-12-05 济南高新区工业废弃物利用研发中心 干法脱硫灰干混砂浆
CN102942339B (zh) * 2012-11-08 2015-11-04 山西洪远机械设备有限公司 一种脱硫灰砌块
CN114960323A (zh) * 2022-04-22 2022-08-30 东南大学 利用脱硫灰对高含水率土体进行快速降湿的方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1749201A (zh) * 2005-08-04 2006-03-22 上海交通大学 粉煤灰透水路面混凝土
CN101565281A (zh) * 2008-04-23 2009-10-28 上海市市政规划设计研究院 建筑陶瓷压滤泥改性石灰粉煤灰稳定碎石

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1749201A (zh) * 2005-08-04 2006-03-22 上海交通大学 粉煤灰透水路面混凝土
CN101565281A (zh) * 2008-04-23 2009-10-28 上海市市政规划设计研究院 建筑陶瓷压滤泥改性石灰粉煤灰稳定碎石

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王文龙等.干法半干法脱硫灰的特性与综合利用研究.《电站系统工程》.2005,第21卷(第5期),27-29. *

Also Published As

Publication number Publication date
CN101948287A (zh) 2011-01-19

Similar Documents

Publication Publication Date Title
CN110255996B (zh) 一种粉煤灰地聚物混凝土及其制备方法
Sani et al. The properties of special concrete using washed bottom ash (WBA) as partial sand replacement
Limbachiya et al. Use of recycled concrete aggregate in fly-ash concrete
Madani et al. The synergistic effect of pumice and silica fume on the durability and mechanical characteristics of eco-friendly concrete
Al-Swaidani et al. Effect of adding scoria as cement replacement on durability-related properties
Gamage et al. Overview of different types of fly ash and their use as a building and construction material
Freeda et al. Greener building material with flyash
CN109437801B (zh) 一种高液限黏土路用改性剂
CN105036629A (zh) 一种轻质高强混凝土及其制备方法
Ravindrarajah et al. Environmentally friendly pervious concrete for sustainable construction
Wang et al. Methods for the control of volume stability of sulfur-rich CFBC ash cementitious systems
Oyebisi et al. Effect of corncob ash blended cement on the properties of lateritic interlocking blocks
Wright et al. Sustainability of desulphurised (FGD) waste in construction
Haldive et al. Experimental study on combined effect of fly ash and pond ash on strength and durability of concrete
Rahmouni et al. Effect of carbonated aggregates on the mechanical properties and thermal conductivity of eco-concrete
CN101948287B (zh) 一种干法脱硫灰稳定碎石
Payá et al. New inorganic binders containing ashes from agricultural wastes
CN101412595A (zh) 一种利用高岭土尾砂制备混凝土掺合料的方法
Patankar et al. Effect of concentration of alkaline solutions on the development of geopolymer mortar
Fayaz et al. Experimental study on mechanical properties of concrete using mineral admixtures
Yang et al. The performance of geopolymer based on recycled concrete sludge
Aydın Utilization of high volume fly ash cement paste in civil engineering construction sites
Canseco-Tuñacao et al. Viability of Napier Grass Ash as Partial Substitute of Cement in CHB
CN103664118A (zh) 一种改性脱硫石膏基混凝土和混凝土试件及其制作方法
Radulović et al. Sustainability aspect of possible material substitution in construction industry

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20110119

Assignee: Sinohydro Tianjin Engineering Co.,Ltd.

Assignor: Shanghai Research Institute of Building Sciences (Group) Co., Ltd.

Contract record no.: 2014120000053

Denomination of invention: Dry method desulfurized fly ash stabilized gravel

Granted publication date: 20130123

License type: Exclusive License

Record date: 20140711

LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model