CN113845373A - 一种利用建筑垃圾制备的轻质型低强流动性回填材料及其制备方法 - Google Patents
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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
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- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- 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
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- 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
- C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
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- 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
- C04B2111/40—Porous or lightweight materials
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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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
- 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
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- 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
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- 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
Abstract
一种利用建筑垃圾制备的轻质型低强流动性回填材料,其特征在于,该材料由水、粉料、发泡剂和稳泡剂组成,所述水和粉料的质量比为0.9‑1:0.95‑1.1;本发明所提供的建筑垃圾流动化回填材料是一种轻质型低强度水泥质材料,适用于路基管线沟槽、检查井周边、挡土墙墙背及桥台台背等部位的回填。
Description
技术领域
本专利涉及一种利用建筑垃圾制备的轻质型低强流动性回填材料及其制备方法。
背景技术
当前,在如火如荼的新城市建设中,城中村改造、拆临拆违、旧城改造等工程实施步伐不断加快,城市变得越来越美的同时,建筑垃圾产生量却在与日俱增,成为环境保护的又一大难点。建筑垃圾犹如城市建设的伴生“疮”,既侵占土地,还对周边环境产生严重影响,甚至带来围城之患,若不及时有效治理,必将后患无穷。城市建筑垃圾治理有望破局,但任重道远,随着城市化进程的不断加快,城市中建筑垃圾的产生和排出数量也在快速增长。人们在享受城市文明同时,也在遭受城市垃圾所带来的烦恼,其中建筑垃圾就占有相当大的比例,约占垃圾总量的30%~40%,因此如何处理和利用越来越多的建筑垃圾,已经成为各级政府部门和建筑垃圾处理单位所面临的一个重要课题。
当前既需要考虑建筑垃圾产生的问题,同时还要考虑其相关的处理以及后续的操作,在此过程中能够将其很好的处理,进而也可以加快工程的建设。同时也需要在建筑垃圾产生的过程中,考虑相应的安全隐患以及对环境的污染,进而达到理想的效果。本专利就是为了解决上述问题,对建筑垃圾进行二次开发和利用,有效的解决建筑垃圾的环境污染问题,同时极大的节省成本。
发明内容
本发明专利的目的在于提供一种利用建筑垃圾制备的轻质型低强流动性回填材料及其制备方法,本发明采用如下技术方案:
一种利用建筑垃圾制备的轻质型低强流动性回填材料,其特征在于,该材料由水、粉料、发泡剂和稳泡剂组成,所述水和粉料的质量比为0.9-1:0.95-1.1;
所述粉料由水泥、石粉、粉煤灰和再生细骨料组成;
所述水泥、石粉、粉煤灰和再生细骨料的质量比为1-1.5:2:2: 18-25;所述发泡剂为粉料质量的5-6%;稳泡剂为粉料质量的 0.3-0.5%。
所述水和粉料的质量比为0.95:1。
所述发泡剂选自K12发泡剂;稳泡剂选自SA-601稳泡剂。
所述发泡剂为粉料质量的5.6-5.9%;稳泡剂为粉料质量的 0.4%。
所述水泥采用采用P.O 42.5水泥。
所述再生细骨料的粒径不大于4.75mm。
一种制备如前所述的一种利用建筑垃圾制备的轻质型低强流动性回填材料的制备方法,其特征在于,该方法包括以下步骤:
步骤一,按重量称取水、粉料、发泡剂和稳泡剂,备用;
步骤二,将水泥、石粉和粉煤灰混合搅拌30-100s,添加再生细骨料搅拌50-100s,添加水搅拌100-200s,得到混合物;
步骤三,将发泡剂和稳泡剂加入步骤二中的混合物中,搅拌均匀,即得到轻质型低强流动性回填材料。
步骤二中搅拌采用的设备为重力式或强制式水泥混凝土拌和机。
有益效果:
本发明所提供的建筑垃圾流动化回填材料是一种轻质型低强度水泥质材料,28d抗压强度2-8MPa,具有自密实、环保经济、强度可调节等特点,适用于路基管线沟槽、检查井周边、挡土墙墙背及桥台台背等部位的回填。
具体实施方式
下面结合具体实施例,进一步阐述本发明。
一种利用建筑垃圾制备的轻质型低强流动性回填材料,其特征在于,该材料由水、粉料、发泡剂和稳泡剂组成,所述水和粉料的质量比为0.9-1:0.95-1.1;
所述粉料由水泥、石粉、粉煤灰和再生细骨料组成;
所述水泥、石粉、粉煤灰和再生细骨料的质量比为1-1.5:2:2: 18-25;所述发泡剂为粉料质量的5-6%;稳泡剂为粉料质量的 0.3-0.5%。
所述水和粉料的质量比为0.95:1。
所述发泡剂选自K12发泡剂;稳泡剂选自SA-601稳泡剂。
所述发泡剂为粉料质量的5.6-5.9%;稳泡剂为粉料质量的0.4%。
所述水泥采用采用P.O 42.5水泥。
所述再生细骨料的粒径不大于4.75mm。
一种制备如前所述的一种利用建筑垃圾制备的轻质型低强流动性回填材料的制备方法,其特征在于,该方法包括以下步骤:
步骤一,按重量称取水、粉料、发泡剂和稳泡剂,备用;
步骤二,将水泥、石粉和粉煤灰混合搅拌30-100s,添加再生细骨料搅拌50-100s,添加水搅拌100-200s,得到混合物;
步骤三,将发泡剂和稳泡剂加入步骤二中的混合物中,搅拌均匀,即得到轻质型低强流动性回填材料。
步骤二中搅拌采用的设备为重力式或强制式水泥混凝土拌和机。
材料参数及性能测试结果
材料的密度、凝结时间、流动性、坍落度、扩展度、28d强度、抗冻。
(1)密度,测定拌合物捣实后的单位体积质量(即质量密度),以确定每立方米建筑垃圾流动性低强回填材料拌合物中各组成材料的实际用量。本方法制备的建筑垃圾流动性低强回填材料的密度约为 500-1300kg/m3,试验标准JGJ/T 70《建筑砂浆基本性能试验方法》。
(2)凝结时间,使用贯入阻力法确定建筑垃圾流动性低强回填材料拌合物的凝结时间,用于指导实际工程。本方法制备的建筑垃圾流动性低强回填材料的凝结时间约为12h,试验标准JGJ/T 70-2009 《建筑砂浆基本性能试验方法》。
(3)抗压强度,指外力施压力时的强度极限。材料的抗压强度是评价其实际工程应用的一项重要指标。建筑垃圾流动化回填材料设计强度以28天龄期的抗压强度为标准,设计强度范围为0.8-1.0MPa。
(4)建筑垃圾流动性回填材料的流动性是以规定的试验方法测定的、表征建筑垃圾流动性回填材料流动性能的技术指标,根据施工要求,可根据流动性指标对流动性能进行分级,用以指导实际工程。建筑垃圾流动性回填材料的流动性大小根据回填工程类型确定,流动度范围为100-300mm。试验标准GBT2419《水泥胶砂流动度测定方法》
(5)坍落度与坍落扩展度,反应混凝土的和易性,试验方法符合《普通混凝土拌合物性能试验方法标准》GB/T50080。经测试,本方法制备的建筑垃圾流动性回填材料坍落度范围可根据施工需求控制在180-250mm,坍落扩展度控制在400-650mm。
(6)抗冻融性,是指材料在含水状态下能经受多次冻融循环作用而不破坏,强度也不显著降低的性质。具有抗冻融性能要求的建筑垃圾流动性回填材料,抗冻融耐久性应根据试验标准JGJ/T 70《建筑砂浆基本性能试验方法》规范要求测定。冻融循环试验后,质量损失率小于5%,抗压强度损失率小于25%。
应理解,这些实施例仅用于说明本发明而不用于限制本发明的范围。此外应理解,在阅读了本发明讲授的内容之后,本领域技术人员可以对本发明作各种改动或修改,这些等价形式同样落于本申请所附权利要求书所限定的范围。
Claims (8)
1.一种利用建筑垃圾制备的轻质型低强流动性回填材料,其特征在于,该材料由水、粉料、发泡剂和稳泡剂组成,所述水和粉料的质量比为0.9-1:0.95-1.1;
所述粉料由水泥、石粉、粉煤灰和再生细骨料组成;
所述水泥、石粉、粉煤灰和再生细骨料的质量比为1-1.5:2:2:18-25;所述发泡剂为粉料质量的5-6%;稳泡剂为粉料质量的0.3-0.5%。
2.如权利要求1所述的一种利用建筑垃圾制备的轻质型低强流动性回填材料,其特征在于,所述水和粉料的质量比为0.95:1。
3.如权利要求1所述的一种利用建筑垃圾制备的轻质型低强流动性回填材料,其特征在于,所述发泡剂选自K12发泡剂;稳泡剂选自SA-601稳泡剂。
4.如权利要求1所述的一种利用建筑垃圾制备的轻质型低强流动性回填材料,其特征在于,所述发泡剂为粉料质量的5.6-5.9%;稳泡剂为粉料质量的0.4%。
5.如权利要求1所述的一种利用建筑垃圾制备的轻质型低强流动性回填材料,所述水泥采用采用P.O 42.5水泥。
6.如权利要求1所述的一种利用建筑垃圾制备的轻质型低强流动性回填材料,所述再生细骨料的粒径不大于4.75mm。
7.一种制备如权利要求1-6之一所述的一种利用建筑垃圾制备的轻质型低强流动性回填材料的制备方法,其特征在于,该方法包括以下步骤:
步骤一,按重量称取水、粉料、发泡剂和稳泡剂,备用;
步骤二,将水泥、石粉和粉煤灰混合搅拌30-100s,添加再生细骨料搅拌50-100s,添加水搅拌100-200s,得到混合物;
步骤三,将发泡剂和稳泡剂加入步骤二中的混合物中,搅拌均匀,即得到轻质型低强流动性回填材料。
8.如权利要求7所述的制备方法,其特征在于,步骤二中搅拌采用的设备为重力式或强制式水泥混凝土拌和机。
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