[1]胡明玉,蔡国俊,付超,等.稻壳灰/硅藻土复合调湿材料研究[J].西安建筑科技大学学报(自然科学版),2019,(06):784-790.[doi:10.15986/j.1006-7930.2019.06.003]
 HU Mingyu,CAI Guojun,FU Chao,et al.Study on rice husk ash/diatomite composite humidity-controlling material[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2019,(06):784-790.[doi:10.15986/j.1006-7930.2019.06.003]
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稻壳灰/硅藻土复合调湿材料研究()
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西安建筑科技大学学报(自然科学版)[ISSN:1006-7930/CN:61-1295/TU]

卷:
期数:
2019年06期
页码:
784-790
栏目:
出版日期:
2019-12-31

文章信息/Info

Title:
Study on rice husk ash/diatomite composite humidity-controlling material
文章编号:
1006-7930(2019)06-0784-07
作者:
胡明玉123蔡国俊123付超123刘章君123
(1.南昌大学 建筑工程学院,江西 南昌330031; 2.江西省超低能耗建筑重点实验室,江西 南昌330031;3.江西省近零能耗建筑工程实验室,江西 南昌 330031)
Author(s):
HU Mingyu123CAI Guojun123 FU Chao123 LIU Zhangjun123
(1.School of Civil Engineering and Architecture, Nanchang University, Nanchang 330031, China; 2.Key Laboratory for Ultralow Energy Buildings of Jiangxi Province,Nanchang 330031, China; 3.Engineering Lab for Nearly Zero Energy Buildings of Jiangxi Province, Nanchang 330031, China)
关键词:
稻壳灰/硅藻土复合调湿材料吸放湿速率抗压强度耐水性
Keywords:
rice husk ash/diatomite composite humidity-controlling material moisture absorption and desorption rate compressive strength water resistance
分类号:
TU50
DOI:
10.15986/j.1006-7930.2019.06.003
文献标志码:
A
摘要:
稻壳灰具有超大比表面积和微孔结构,且生态效应优于其它工业废弃物,对其高效利用意义重大.以稻壳灰和天然硅藻土为原材料,掺以适量无机改性掺合料,制备稻壳灰/硅藻土复合调湿材料.通过试验研究稻壳灰/硅藻土复合调湿材料的调湿、强度和耐水性.采用XRD分析探讨材料强度和耐水性的形成机理;通过扫描电镜分析和材料吸附/解吸理论研究材料的调湿机理.研究表明,稻壳灰复合量为9%~17%时,复合调湿材料吸、放湿速率分别达到0.058 0~0.066 0 kg/(kg·d)和0.042 6~0.047 5 kg/(kg·d);60 d抗压强度为6.01~6.50 MPa、软化系数达0.71~0.76.无机改性掺合料与稻壳灰、硅藻土中的SiO2和Al2O3反应生成大量C-S-H凝胶和斜方钙沸石、菱沸石等新硅铝酸盐矿物,使材料产生强度和耐水性;复合调湿材料对空气中水分子的毛细孔道效应、表面化学及物理吸附作用,使其具有优异的调湿性能.
Abstract:
Rice husk ash has super specific surface area and microporous structure, and its ecological effect is superior to other industrial wastes, which is of great significance for its efficient utilization In this study, rice husk ash and natural diatomite were used as raw materials, and a proper amount of inorganic modified admixture was added to prepare rice husk ash/diatomite composite humiditycontrolling material The humidity-controlling performance, strength, and water resistance of rice husk ash/diatomite composite humidity-controlling material were studied through experiments. The formation mechanism of strength and water resistance of the material was discussed by XRD analysis, and the humidity-controlling mechanism of the material was studied by scanning electron microscopy and material adsorption/desorption theory. The results show that when the rice husk ash content is 9%~17%, the moisture absorption and desorption rates of the composite material reach 0.058 0~0.066 0 kg/(kg·d) and 0.042 6~0.047 5 kg/(kg·d), respectively; the compressive strength at 60 days is 6.01~6.50 MPa and the softening coefficient is 0.71~0.76. Inorganic modified admixture reacts with SiO2, Al2O3 in diatomite and rice husk ash to form a large amount of C-S-H gel and new aluminosilicate minerals, such as Gismondine and Chabazite, which make the material produce strength and water resistance It has excellent humidity-controlling performance.

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备注/Memo

备注/Memo:
收稿日期:2019-02-21修改稿日期:2019-11-07
基金项目:国家自然科学基金资助项目(51362021);江西省水利厅科技项目(KT201331)
第一作者:胡明玉(1958-),女,教授,博士,博士生导师.主要从事生态环境材料和建筑结构材料方面的研究.E-mail: 892660685@qq.com
更新日期/Last Update: 2020-01-19