在单组分碱活性材料中广泛使用废玻璃： 迈向可持续的建筑实践

段 伯纳, 兰吉 特-, 陈 文
澳大利亚土木工程系

摘要

本文评估了在碱活性材料（AAMs）中广泛回收废玻璃的可行性。废玻璃在AAMs中的用途有两个：部分激
活剂和作为矿物前体。废玻璃与商业氢氧化钠混合，然后加热以产生固体活化剂粉末。本文研究了以废玻璃为基础
的活化剂的技术性能，以取代商业硅酸钠，一种常用于AAM的碱活化剂。本文利用强度和微观结构特征研究了废玻
璃在粉煤灰 /矿渣基单组分AAMs中仅作为活化剂（WGA）和同时作为活化剂和前体（WGAP）的效果。对废玻璃
基AAMs（WGA和WGAP）进行了质量成本和排放分析，并将其结果与普通波特兰水泥（OPC）进行了比较。废玻
璃基活性物质的特征测试表明，随着活性物质在水中的充分溶解，释放出活性碱和二氧化硅，有效形成了硅酸钠矿
物。WGA和WGAP在 56天时都表现出相当的强度，在环境固化下的微观结构更加密集。根据质量分析，按质量计
算，废玻璃可以利用到总粘合剂的 17%。根据成本和二氧化碳排放的分析，WGA和WGAP比OPC便宜 23%和 15%，
更加环保 84%和 82%。废玻璃在AAMs中作为活化剂和前驱体的双重作用扩大了水泥工业中玻璃废料的回收，有利于
技术和环境的发展。

关键词

废玻璃；单组份碱活性材料；废弃物回收利用

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