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地聚合物混凝土中新型保温材料玻璃微珠的性能

Properties of a New Insulation Material Glass Bubble in Geo-Polymer Concrete.

作者信息

Shahedan Noor Fifinatasha, Abdullah Mohd Mustafa Al Bakri, Mahmed Norsuria, Kusbiantoro Andri, Tammas-Williams Sam, Li Long-Yuan, Aziz Ikmal Hakem, Vizureanu Petrică, Wysłocki Jerzy J, Błoch Katarzyna, Nabiałek Marcin

机构信息

Center of Excellence Geopolymer and Green Technology, School of Materials Engineering, Universiti Malaysia Perlis (UniMAP), P.O. Box 77, D/A Pejabat Pos Besar, Kangar 01000, Perlis, Malaysia.

Faculty of Engineering Technology, Universiti Tun Hussein Onn (UTHM), Parit Raja 86400, Batu Pahat, Johor, Malaysia.

出版信息

Materials (Basel). 2021 Feb 8;14(4):809. doi: 10.3390/ma14040809.

DOI:10.3390/ma14040809
PMID:33567696
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7915300/
Abstract

This paper details analytical research results into a novel geopolymer concrete embedded with glass bubble as its thermal insulating material, fly ash as its precursor material, and a combination of sodium hydroxide (NaOH) and sodium silicate (NaSiO) as its alkaline activator to form a geopolymer system. The workability, density, compressive strength (per curing days), and water absorption of the sample loaded at 10% glass bubble (loading level determined to satisfy the minimum strength requirement of a load-bearing structure) were 70 mm, 2165 kg/m, 52.58 MPa (28 days), 54.92 MPa (60 days), and 65.25 MPa (90 days), and 3.73 %, respectively. The thermal conductivity for geopolymer concrete decreased from 1.47 to 1.19 W/mK, while the thermal diffusivity decreased from 1.88 to 1.02 mm/s due to increased specific heat from 0.96 to 1.73 MJ/mK. The improved physicomechanical and thermal (insulating) properties resulting from embedding a glass bubble as an insulating material into geopolymer concrete resulted in a viable composite for use in the construction industry.

摘要

本文详细介绍了一种新型地质聚合物混凝土的分析研究结果。该混凝土以玻璃微珠作为保温材料、粉煤灰作为前驱体材料，并以氢氧化钠（NaOH）和硅酸钠（NaSiO）的组合作为碱性激发剂，形成地质聚合物体系。在玻璃微珠掺量为10%（该掺量是为满足承重结构的最低强度要求而确定的）时，样品的工作性、密度、抗压强度（按养护天数）和吸水率分别为70毫米、2165千克/立方米、28天抗压强度52.58兆帕、60天抗压强度54.92兆帕、90天抗压强度65.25兆帕以及3.73%。地质聚合物混凝土的热导率从1.47瓦/米·开尔文降至1.19瓦/米·开尔文，热扩散率从1.88毫米²/秒降至1.02毫米²/秒，这是由于比热容从0.96兆焦/立方米·开尔文增至1.73兆焦/立方米·开尔文。将玻璃微珠作为保温材料掺入地质聚合物混凝土中，使其物理力学和热（保温）性能得到改善，从而形成了一种可用于建筑行业的可行复合材料。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/756d/7915300/9784d9b161e9/materials-14-00809-g011.jpg
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