开发使用当地粘土和固体废物材料制造的人工聚合物的轻质结构混凝土
Sagirul Islam1, Gulshan Ara2, Umme Sarmeen Akhtar1
1Institute of Glass and Ceramic Research and Testing (IGCRT), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, 1205, Bangladesh.
Heliyon
|August 22, 2024
概括
轻质聚合混凝土 (LWAC) 是使用当地粘土和固体废物开发的,部分取代了天然粗聚合物 (NCA). 具有30%的替代率的LWAC符合结构要求,为总稀缺提供了可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 可持续建筑 可持续建筑
背景情况:
- 传统的混凝土严重依赖天然粗聚合物 (NCA),导致资源枯竭.
- 开发NCA的可持续替代品对于建筑行业至关重要.
- 利用当地的粘土和固体废物为环保建筑材料提供了机会.
研究的目的:
- 通过部分用人工轻质聚合物 (LWA) 取代NCA来开发轻质聚合物混凝土 (LWAC).
- 评估由当地粘土 (红色粘土和萨瓦尔粘土) 和固体废物 (大米灰和废玻璃) 生产的LWA的适用性.
- 评估用于结构应用的制造LWAC的机械,热和耐久性.
主要方法:
- 人工轻质聚合物 (LWA) 使用红色粘土和萨瓦尔粘土制成,单独与大米灰 (RHA) 和废玻璃相结合.
- 评估了原材料和LWA的物理,化学,热和地质技术特性.
- 轻质聚合混凝土 (LWAC) 是通过部分用LWA取代NCA (30%的替代) 来生产的.
- 研究了LWAC的机械性能 (压力强度,弹性模量,分裂拉力强度,曲变形,爬行) 和耐久性 (通过RCP测试测试透性).
主要成果:
- 红色粘土在LWA制备方面证明优于萨瓦尔粘土,产生适合LWAC的LWA,具有适合LWAC的特性.
- 使用30%LWA替换的LWAC表现出轻量化特征.
- LWAC的压力强度达到28 MPa (7天) 和48 MPa (28天).
- LWAC的机械性能和透度符合结构混凝土的标准.
结论:
- 轻质聚合混凝土 (LWAC) 可以通过从当地粘土和固体废物中获得的LWA部分取代天然粗聚合物 (NCA) 来成功生产.
- 建议在LWA生产中使用红粘土,而不是萨瓦尔粘土.
- LWAC显示出有前途的机械性能和耐久性,适用于结构应用.
- 这种方法为孟加拉国提供了一个可持续的解决方案,解决了NCA的稀缺问题,并促进了固体废物的再利用.
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