结合剂的性激活:一个比较研究
Bianca Ignacio Almeida Alves1, Markssuel Teixeira Marvila2, José Alexandre Tostes Linhares Júnior1
1LAMAV-Advanced Materials Laboratory, UENF-University of the Northern Rio de Janeiro, Av. Alberto Lamego, 2000, Campos dos Goytacazes 28013-602, Brazil.
Materials (Basel, Switzerland)
|April 9, 2024
概括
活性材料 (AAM) 为波特兰水泥提供了一个可持续的替代品. 这项研究发现,基于甲高的AAM达到大约30 MPa的压力强度,而高炉渣AAM在7天后达到大约25 MPa.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续建筑 可持续建筑
- 地质化学 地质化学
背景情况:
- 波特兰水泥生产产生大量的二氧化碳排放,推动了对可持续替代品的需求.
- 活性性材料 (AAM) 正在成为环保粘合剂.
- 高炉渣,飞灰和甲是AAM的关键前体.
研究的目的:
- 评估由高炉渣,飞灰和金属产生的AAM的性能.
- 为了比较这些AAM作为波特兰水泥的潜在替代品的性能.
- 了解不同前体的激活机制.
主要方法:
- 结合剂的表征 (化学,矿物学,颗粒学组成).
- 准备AAM标本与不同的活性激剂度 (4.00-5.50mol/L).
- 评估新鲜和硬化的特性:一致性,粘度,吸水能力,密度,压力强度 (7天),热量计,XRD和SEM.
主要成果:
- 基于甲高的AAM显示了最低的可加工性,但最佳的压力强度 (~30 MPa在7天) 与正常固化和4.0-4.5mol/L的度.
- 飞灰激活最不强烈,没有通过XRD观察到明显的晶体相.
- 高炉渣AAM在热固化时表现出更高的反应性,在7天内达到~25 MPa的压力强度.
结论:
- 每一种前体 (金属,飞灰,高炉渣) 都表现出一种独特的活性化机制.
- 从这些前体产生的AAM显示出作为波特兰水泥可行的,可持续的替代品的潜力.
- 对性激活的进一步研究可以推进水泥技术并减少对环境的影响.
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