共查询到20条相似文献,搜索用时 124 毫秒
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本文研究了热激发对化工废石膏-粉煤灰复合胶凝材料物理性能的改性作用。研究结果表明,采取低温煅烧激发化工废石膏的化学活性,可以较大幅度地缩短复合胶凝材料的凝结时间和提高强度,行之有效地改善复合胶凝材料的物理性能。 相似文献
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比较详细地分析了复合胶凝材料的各种影响因素,研究了掺40%以上粉煤灰制备的复合胶凝材料.试验证实其抗折强度大于60MPa,抗压强度大于160MPa,为粉煤灰利用开辟了新途途。 相似文献
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Liu Tingquan 《建筑节能》1999,(3)
为提高墙体保温效果,将孔径尺寸尽可能降低,制成孔洞率达60%~75%的保温型砌块,文中介绍了所用原料、成型方法和实验结果,并对技术经济效果进行分析。 相似文献
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利用化工废石膏制备新型道路建筑材料的研究 总被引:7,自引:1,他引:7
研究了激发剂对化工废石膏-粉煤灰新型道路建筑材料的强度和自由线膨胀率等性能的影响,以及减水剂的作用和新型道路建筑材料的抗硫酸盐侵蚀性能等。本研究选用3种不同类别粉煤灰与化工废石膏进行复合试验的结果表明,当原状粉煤灰与高钙粉煤灰混合后再与化工废石膏复合研制的材料,比两种灰单独掺加的效果更好,本研究研制的新型道路建筑材料具有较高的力学性能和优异的抗硫酸盐侵蚀性能。 相似文献
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A perspective study on fly ash–lime–gypsum bricks and hollow blocks for low cost housing development
Housing is a great problem in today's world. The most basic building material for construction of houses is the usual burnt clay brick. A significant quantity of fuel is utilized in making these bricks. Also, continuous removal of topsoil, in producing conventional bricks, creates environmental problems. A feasibility study was undertaken on the production of fly ash–lime–gypsum (FaL-G) bricks and hollow blocks to solve the problems of housing shortage and at the same time to build houses economically by utilizing industrial wastes. The compressive strength, water absorption, density and durability of these bricks and hollow blocks are investigated. It is observed that these bricks and hollow blocks have sufficient strength for their use in low cost housing development. Tests were also conducted to study the influence of type of curing on the increase in strength and hardening of the bricks and blocks with time. It was observed that the hot water curing leads to a greater degree of hardening and higher strength, earlier compared to ordinary water curing. 相似文献
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利用HB化学石膏改性剂和原状二水化学石膏可生产一种新型胶凝材料,该材料具有强度高、耐水、抗冻、抗碳化、收缩率低等特性;生产的墙体标砖符合MU15的标准。该项技术具有投资小、流程短、见效快、利润高的优点,符合国家产业政策,并可同步形成良好的经济效益、社会效益和环境效益。 相似文献