增强型砂加气混凝土材料性能试验研究

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (12): 4254-4261.

增强型砂加气混凝土材料性能试验研究

任劲滔¹, 胡冗冗¹, 黄炜², 权文立²

1.西安建筑科技大学建筑学院,西安 710055;
2.西安建筑科技大学土木工程学院,西安 710055

收稿日期:2023-06-09 修订日期:2023-07-22 出版日期:2023-12-15 发布日期:2023-12-12
通信作者: 胡冗冗,博士,教授。E-mail:hurongrong@xauat.edu.cn
作者简介:任劲滔(1997—),男,硕士研究生。主要从事尾矿加气混凝土的研究。E-mail:1172760164@qq.com
基金资助:
陕西省重点研发计划(2021ZDLSF05-11);陕西省杰出青年科学基金(2018JC-025)

Experimental Study on Performance of Reinforced Sand Aerated Concrete Materials

REN Jintao¹, HU Rongrong¹, HUANG Wei², QUAN Wenli²

1. School of Architecture, Xi’an University of Architecture and Technology, Xi’an 710055, China;
2. College of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China

Received:2023-06-09 Revised:2023-07-22 Online:2023-12-15 Published:2023-12-12

摘要/Abstract

摘要： 在普通砂加气混凝土的基础上,以金尾矿砂为硅质材料,玄武岩纤维和气凝胶为增强材料,制备增强型砂加气混凝土,分析玄武岩纤维掺量、玄武岩纤维长度和气凝胶掺量对增强型砂加气混凝土性能的影响。结果表明:随着玄武岩纤维掺量(0.1%、0.2%、0.3%、0.4%,质量分数)和玄武岩纤维长度(3、6、9、12 mm)的增加,砂加气混凝土的干密度、抗压强度、抗折强度以及导热系数随之增大,玄武岩纤维的最优掺量为0.3%,最优长度为6 mm,此时砂加气混凝土的抗压强度较未掺纤维时提高9.64%,抗折强度较未掺纤维时提高21.42%,力学性能较好,导热系数变化较小;气凝胶的最佳掺量为1.5%,此时导热系数降低10.68%,抗压强度、抗折强度略有降低,但仍满足相关强度要求。

关键词: 砂加气混凝土, 玄武岩纤维, 气凝胶, 导热系数, 力学性能, 孔结构

Abstract: On the basis of ordinary sand aerated concrete, the reinforced sand aerated concrete was prepared with gold tailing sand as silica material and basalt fiber and aerogel as reinforcing materials. The effects of basalt fiber content, basalt fiber length and aerogel content on performance of reinforced sand aerated concrete were analyzed. The results show that with the increase of basalt fiber content (0.1%, 0.2%, 0.3%, 0.4%, mass fraction) and basalt fiber length (3, 6, 9, 12 mm), the dry density, compressive strength, flexural strength and thermal conductivity of sand aerated concrete increase. The optimal content of basalt fiber is 0.3% and the optimal length of basalt fiber is 6 mm, at which time the compressive strength increases by 9.64% than that without fiber, the flexural strength increases by 21.42% than that without fiber, the mechanical properties are better, and the thermal conductivity is less affected. The optimal content of aerogel is 1.5%, at which time the thermal conductivity is reduced by 10.68%, and the compressive strength and flexural strength are slightly reduced, but still meet the relevant strength requirements.

Key words: sand aerated concrete, basalt fiber, aerogel, thermal conductivity, mechanical property, pore structure

中图分类号:

TU528

任劲滔, 胡冗冗, 黄炜, 权文立. 增强型砂加气混凝土材料性能试验研究[J]. 硅酸盐通报, 2023, 42(12): 4254-4261.

REN Jintao, HU Rongrong, HUANG Wei, QUAN Wenli. Experimental Study on Performance of Reinforced Sand Aerated Concrete Materials[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(12): 4254-4261.

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