共查询到20条相似文献,搜索用时 140 毫秒
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以脱硫石膏为胶凝材料,以膨胀珍珠岩为轻质骨料,掺加适量的粉煤灰及其他外加剂,经浇注成型制备膨胀珍珠岩保温板。膨胀珍珠岩表面疏松多孔,其应用受到了限制。采用VAE乳液包覆膨胀珍珠岩表面的孔,可降低其吸水率;或采用硬脂酸炒制膨胀珍珠岩,覆盖在其表面和孔洞,使其由亲水转变为憎水,也可降低其吸水率。通过试验,掺加改性后膨胀珍珠岩的保温材料的防水性能提高,吸水率下降。掺加VAE乳液改性的膨胀珍珠岩的保温材料的力学性能和导热性能有所改善。利用SEM测试手段对VAE改性的膨胀珍珠岩进行微观结构分析,同时探讨其防水机理。 相似文献
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“憎水珍珠岩保温板开发与应用研究”通过鉴定由北京中建建筑科学技术研究院承担的“憎水珍珠岩保温板开发与应用研究”项目已于1997年4月29日在北京由中建总公司组织通过技术鉴定。该项目对憎水珍珠岩保温板的材性、生产工艺以及外墙内保温和屋面保温施工工艺进行... 相似文献
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采用玻化微珠和膨胀珍珠岩制备无机保温板,研究其导热系数、抗压强度和干密度分别随玻化微珠掺量的变化规律。结果表明,玻化微珠的较佳掺量为膨胀珍珠岩质量的30%,与未掺加玻化微珠的膨胀珍珠岩保温板相比,其导热系数降低了14.7%,抗压强度提高了17.8%,干密度增加了19.9%。利用扫描电子显微镜对试样进行微观分析,探讨玻化微珠掺量对保温板性能的影响。 相似文献
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新型憎水珍珠岩水泥聚苯保温绝热板的研制 总被引:1,自引:0,他引:1
新型憎水珍珠岩水泥聚苯保温绝热板(以下简称新型保温板)是以聚苯泡沫颗粒,膨胀珍珠岩,憎水剂和水泥粘结剂为主要原料,采用压制成型,热力烘干工艺制成的一种新型高效防水保温材料。它具有质轻,高强,绝热,防水,耐火,吸音,耐腐蚀,施工方便等特点,可广泛诮地建筑物的保温,保冷工程,是目前倒置式防水屋面的理想保温材料之一。 相似文献
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憎水膨胀珍珠岩及其制品的研究与应用 总被引:1,自引:0,他引:1
憎水膨胀珍珠岩具有显著的憎水、保温、表面均匀、密度小、孔隙率低、颗粒强度高、质量轻等特点,国外广泛应用于城市集中供热工程、新型墙体材料工程、屋面保温防水一体化工程以及冶金、电力、纺织等行业,取得了良好的经济效益和社会效益,具有广阔的前景。但憎水膨胀珍珠岩在我国起步较晚,发展缓慢,且多数以小型企业为主,缺乏规模效益,严重制约着产品的升级与发展。本文拟就憎水膨胀珍珠岩的特性及应用情况作简单介绍。1憎水膨胀珍珠岩的概况1.1憎水膨胀珍珠岩的生产工艺生产憎水膨胀珍珠岩的原料是珍珠岩,它是一种酸性岩浆喷出… 相似文献
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研究膨胀珍珠岩保温板与胶粘剂的拉伸粘结强度。结果表明,胶粘剂与膨胀珍珠岩保温板的拉伸粘结强度低于与EPS板的拉伸粘结强度;膨胀珍珠岩保温板外墙保温系统不适宜用JGJ 144-2004《外墙外保温技术规程》进行检测。 相似文献
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防水粉膨胀珍珠岩复合板研究 总被引:1,自引:0,他引:1
本文介绍一种新研制的能实现屋面防水保温隔热一体化的复合板,它由防水粉、膨胀珍珠岩组合而成,用于保温隔热屋面,具有施工简单、工期短、造价低、抗震抗变形性好等优点. 相似文献
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《Building and Environment》2005,40(3):311-318
Expanded perlite is a porous, lightweight, fire resistant and moisture retaining material with sound and thermal insulation properties. In this research, acoustical behaviour of plates made of expanded perlite was studied experimentally. Since these plates are used for sound absorption, the acoustical parameter selected for this study is “sound absorption coefficient”. Preliminary experiments indicated that moisture reduced the sound absorption coefficient on plates and there is not much significant difference between the dry and 50% humid conditions. However, there is a significant difference in acoustical properties for the 50–95% humid conditions. Thus, this interval was studied in detail. A number of expanded perlite plates having different mixtures were prepared and tested. It was observed that, coating the expanded perlite particles with sodium silicate increased the moisture resistance, and the addition of mineral fibres into the mixtures increased the strength and sound absorption coefficient of the plates. 相似文献
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介绍了单面钢丝网架珍珠岩保温板外保温的施工技术,并从适用范围、工艺流程、操作要点、效益分析等方面对其进行了论述,指出该外保温施工具有自带钢丝网架抗裂性好、轻质保温、耐久性好、节能环保、稳定抗老化等特点,具有良好的应用前景。 相似文献
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Different methods have been investigated for achieving heat insulation in the buildings. Manufacturing of high heat conductivity resistant construction materials is an important part of these research efforts. Perlite is an extremely useful material for heat insulation and 70% of the world reserves are located in Turkey. Nearly 65% of the perlite produced today is consumed by the construction industry. Its thermal, lightness, and acoustic insulation properties make perlite an excellent material to be used as lightweight aggregate in brick manufacturing. High heat resistant brick can be produced by adding perlite into the clay in conventional brick manufacturing. In this investigation perlite of Eski?ehir region and clay were collated and fired to form high heat conductivity resistant material. Binding materials such as cement, gypsum, lime, bitumen and clay were used for manufacturing perlite brick. Bricks in standard sizes manufactured at different perlite–clay ratios and unit weight, compressive strength, volume reduction and heat conductivity values were obtained. Then the mixture with the best combination of the properties was determined and cost optimization was described. Results were examined according to combination properties, and specialties of perlite bricks were determined at various weights. As a result, the best mixture was determined as the one containing 30% perlite. 相似文献
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通过COMSOL仿真软件模拟了以地聚物基泡沫混凝土和真空绝热板为原材料制备的地聚物基泡沫混凝土屋面保温系统。确定了地聚物基泡沫混凝土屋面保温系统的构造形式,通过COMSOL仿真软件计算出夏热冬暖地区宜采用115 mm地聚物基泡沫混凝土+20 mm真空绝热板+115 mm地聚物基泡沫混凝土的屋面保温系统构造,满足传热系数0.2 W/(m2·K)的要求。严寒地区采用140 mm地聚物基泡沫混凝土+20 mm真空绝热板+140 mm地聚物基泡沫混凝土的屋面保温系统构造,满足传热系数0.15 W/(m2·K)的要求。 相似文献