共查询到19条相似文献,搜索用时 156 毫秒
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《新型建筑材料》2021,(7)
以巴丹吉林沙漠的风积沙为原料,添加一定量的粘结剂、助熔剂、糊精混合压制成型,通过高温烧结制备风积沙陶瓷透水砖。分析了不同粒径风积沙的化学和晶相组成及相对含量,分别研究了风积沙的粒径和添加量对陶瓷透水砖透水系数、抗折强度及微观形貌的影响。结果表明:风积沙的粒径对陶瓷透水砖的抗折强度起主要作用,风积沙的添加量对陶瓷透水砖的透水系数影响较大。当风积沙的颗粒级配为40~60目(0.25~0.38 mm),添加量85%时,制备的陶瓷透水砖性能最佳:透水系数为1.62×10-2cm/s,抗折强度为3.13 MPa。制得的风积沙透水砖强度高且透水性能好,可应用于海绵城市建设。 相似文献
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本文以烧结的陶瓷透水砖,混凝土透水砖以及砂基透水砖为研究对象,选取五种不同材料的试样,分别进行了整体浸泡实验,单面浸泡实验,蒸发强度实验以及恒温恒湿下的吸湿实验,测定了多孔地板随时间的蒸发特性曲线,含湿量随时间的变化曲线,吸湿特性曲线,结果表明陶土材料烧结的陶瓷多孔地板保水性最好.测得混凝土透水砖蒸发强度为0.066 ... 相似文献
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以废瓷砖再生骨料(CRA)100%替代原生碎石骨料(NCA),制备了废瓷砖再生骨料混凝土(CRAC),测试了其工作性及力学强度.采用化学结合水法、扫描电子显微镜(SEM)及比表面积测试法(BET)等,研究了废瓷砖再生骨料-水泥石界面黏结强度、水化程度及显微结构,探讨其界面特征,并将其与原生碎石骨料(NCA)-水泥石界面相比较.结果表明:与原生碎石骨料相比,废瓷砖再生骨料具有表观密度较小、压碎指标较高及吸水率较大等特点;在相同配合比条件下,废瓷砖再生骨料混凝土具有更好的工作性和力学强度;在相同水灰比、相同龄期条件下,废瓷砖再生骨料-水泥石界面黏结强度较高,其界面区生成的水化产物较多、孔隙率更低、显微结构更加致密. 相似文献
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含竹炭黄金尾矿陶瓷砖制备研究 总被引:1,自引:0,他引:1
采用黄金尾矿、紫金土为主要原料,添加不同配比的竹炭,通过干压成型-高温烧成法制备含竹炭黄金尾矿陶瓷砖,分析了竹炭添加量与烧成温度对陶瓷砖的物化性能、物相组成及显微结构的影响规律.研究结果表明,黄金尾矿、紫金土和竹炭的复合可以制备强度较高、吸水率较低的陶瓷砖,其物相主要为石英,显微结构呈规则网络状;在竹炭/黄金尾矿质量比为5/70,烧成温度为1125℃时,陶瓷砖具有较好的综合性能,其破坏强度可达528.9N,吸水率0.04%,达到GB/T4100-2006<陶质砖>附录L中对BⅢ类陶质砖破坏强度的要求,有望成为一种新型的环境友好型陶瓷砖. 相似文献
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在厨卫间瓷砖饰面系统中,防水材料、粘贴材料和瓷砖的匹配性对系统的稳定性非常重要。在不同聚合物含量的水泥基防水浆料的基材上用不同粘贴材料铺贴不同吸水率的瓷砖,测试系统的粘结强度,结果表明,低聚合物含量的水泥基防水浆料和TTB瓷砖胶配套使用,系统的粘结力最佳,相容性更好,更适用于厨卫间。 相似文献
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《Construction and Building Materials》2010,24(5):832-838
The ceramic industry is known to generate large amounts of calcined-clay wastes each year. So far a huge part is used in landfills. Reusing these wastes in concrete could be a win–win situation. For one hand by solving the ceramic industry waste problem and at the same time leading to a more sustainable concrete industry by reducing the use of non renewable resources like cement and aggregates and avoiding environmental problems related to land filled wastes. This paper examines the feasibility of using ceramic wastes in concrete. Results show that concrete with 20% cement replacement although it has a minor strength loss possess increase durability performance. Results also show that concrete mixtures with ceramic aggregates perform better than the control concrete mixtures concerning compressive strength, capillary water absorption, oxygen permeability and chloride diffusion thus leading to more durable concrete structures. 相似文献
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采用保水剂、粘结剂改性,可配制施工性、粘结性、耐候性良好的特细砂瓷砖粘结砂浆。它的抗流挂性好,滑移量小于2 mm,有较充分的凉置时间,凉置20 min的粘结强度大于1.0 MPa,可满足瓷砖粘贴薄层施工的要求。采用聚丙烯纤维复合改性,可配制抗裂性较好的柔性瓷砖粘结砂浆。介绍这种新型粘结砂浆的配制原理、方法和性能。 相似文献
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Effectiveness of technogenic waste usage in products of building ceramics and expanded clay concrete
J. Malaiškienė M. Vaičienė R. Žurauskienė 《Construction and Building Materials》2011,25(10):3869-3877
In this paper the influence of the burned and the unburned mullite wool waste on the properties of ceramics and expanded clay concrete has been analysed. It has been determined, that this waste could be successfully used in the manufacture of expanded clay concrete and wall ceramic products. Increasing the quantity of mullite wool in the mix of expanded clay concrete, the forecasted frost resistance decreased and the water absorption increased. Products without waste and those having 10% of the waste have similar compressive strength. The performed research has shown that the unburned mullite wool waste is the active micro filler, however it does not decrease the quantity of portlandite formed, but performs a framing function. Modifying the composition of ceramics with the burned mullite wool waste, the density of samples decreased, but the parameters of water absorption and compressive strength increased. To receive stronger ceramic products, 15% of the burned mullite wool waste should be added, then the compressive strength is 23 MPa, however the forecasted frost resistance of such ceramic body would be only 65 cycles. The highest frost resistance (about 200 cycles) of ceramic samples was received applying 5% of the waste additive, then compressive strength is about 16 MPa. The unburned mullite wool waste decreases the frost resistance and density of expanded clay lightweight concrete samples, and increases the water absorption. Replacing 10% of cement with the unburned mullite wool waste almost does not change the compressive strength and density, but decrease frost resistance 36% and increase water absorption 4%. 相似文献
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为了构建加气混凝土砌块墙安全贴砖系统,为工程现场提供借鉴,在实验室内模拟工程施工现场和养护条件砌筑混凝土砌块墙,针对不同场景、瓷砖、瓷砖胶采用不同的5种贴砖模式,测试了体系的拉伸粘结强度,在SQ-S模式,2种瓷砖胶体系都有最好的拉伸粘结强度分别是C0贴釉面砖的1.03 MPa、1.23 MPa和C1贴玻化砖1.39 MPa、1.72 MPa,体系内聚强度最好,贴砖更安全可靠。结果表明:对加气混凝土砌块进行界面强化处理可以增加体系的内聚强度,湿碰湿(S-S)模式双面上浆贴砖体系的粘结强度高于单面上浆,C1瓷砖胶批抹打底对加气混凝土有强化作用,能有效提升体系稳定性和安全性。 相似文献
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利用陶瓷废料制备轻质墙体材料,是解决陶瓷废料带来环境问题的重要方法。试验采用10%、20%、30%和40%的陶瓷废料内掺取代水泥制备轻质多孔混凝土,探讨了陶瓷废料对轻质多孔混凝土性能与孔结构影响。试验结果表明,陶瓷废料的掺量低于20%,轻质多孔混凝土的吸水率降低,抗压强度提高,孔隙率降低,主要归因于陶瓷废料的物理填充效应的发挥;陶瓷废料掺量高于20%,对轻质多孔混凝土性能和孔结构不利。 相似文献