摘要
利用废弃混凝土生产制备再生细骨料和再生粉体,并应用于干混砌筑砂浆中,通过调整用水量控制砂浆的稠度在70mm^80mm,以此研究再生粉体掺量及胶砂比对干混砌筑砂浆基本性能、力学性能以及抗冻性能的影响。研究结果表明,干混砌筑砂浆的基本性能与再生粉体掺量及胶砂比的变化均呈线性关系;当胶砂比为1:3,再生粉体掺量为10%时,其28d抗压强度可达35.0MPa,比未掺加再生粉体时仅减小8.1%,且砂浆的抗冻性能符合规范要求。
Using waste concrete product to prepare recycled fine aggregate and recycled powder,which is used in dry- mixed masonry mortar.Through adjusting water consumption to control the consistency in the range of 70 ~ 80 mm,the effect of basic properties,mechanical properties and frost resistance of dry- mixed masonry mortar on the different content of recycled powder and binder to sand ratio is studied. The results show that the basic properties of mortar have good linear relationships with the changes of content of recycled powder and binder to sand ratio. When the binder to sand ratio being 1： 3 and the content of recycled powder being 10%,the compressive strength at 28 d is 35. 0MPa and decreases only by8. 1% without adding recycled powder,and the frost resistance of mortar comply with specifications.
出处
《粉煤灰综合利用》
CAS
2016年第2期11-14,共4页
Fly Ash Comprehensive Utilization
基金
国家自然科学基金资助(项目批准号:51378270)
山东省高校优秀科研创新团队计划资助
关键词
废弃混凝土
再生砂
再生粉体
干混砌筑砂浆
力学性能
抗冻性
waste concrete
recycled sand
recycled powder
dry-mixed masonry mortar
mechanical properties
frost resistance
