.png){kind=icon}
返回
Fast-Curing Composites Based on Multicomponent Gypsum Binders
.png){kind=icon}
PRE
AI
DOI：10.1061/(ASCE)MT.1943-5533.0003313.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
The novelty of the paper is to identify the scientific patterns of the selective effect of multicomponent fine mineral additives on the synthesis of new growths and the microstructure of gypsum composites. Gypsum binders obtained using the waste of wet magnetic separation of ferruginous quartzite, nano-dispersed silica powder, chalk, and superplasticizer were prepared as novel compositions, on the basis of which rational compositions of gypsum composites for various purposes are created. The strength characteristics of concrete mixes were researched by a series of tests (compressive strength and flexural strength). In addition, the durability characteristics (freeze-thaw resistance and water impermeability) as well as thermal conductivity were determined by standard techniques and confirm the creation of durable composites with high exploitation properties. Besides, the microstructural, morphological, and thermal properties of such composites at 28 days of curing were determined. The technology of composite gypsum binder preparation has been developed, contributing to the uniform distribution and optimization of the particle size distribution of its components. It also accelerates the process of microstructure formation and increases the compressive strength in the early periods of hardening by 40% and at 28 days old by 58% with compressive strength values of up to 26 MPa and a water resistance coefficient of 0.82-0.89. Rational compositions of gypsum composites are offered for various purposes with multicomponent fine-dispersed mineral additives and superplasticizer, reducing their water demand by 19% with little or no reduction in the strength of equal-moving mixes and slowing down the setting time by 3 times (up to 22 min 20 s).
Keyword:
Gypsum composites
Magnetic separation waste
Superplasticizer
Early strength
Durability
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
J
IF:
3
论文数:
7.2K
被引数:
2.4W
机构
引用论文
.png){kind=icon}
Gypsum plaster waste recycling: A potential environmental and industrial solution石膏废料回收: 一种潜在的环境和工业解决方案
PREAI
分享收藏
The influence of different aggregates on the behavior and properties of gypsum mortars不同骨料对石膏砂浆性能的影响
PREAI
分享收藏
查看更多内容