Quartz Powder Valorisation in White Self-Compacting Concrete: Mortar Level Study
نویسندگان
چکیده
Quartz powder (QP) from mining exploration has increased, and valorisation solutions are sought. QP incorporation in structural concrete is an exciting strategy for the growth sustainable development of industry, waste management environmental protection. This work addresses a Portuguese company on powder-type self-compacting architectural purposes, combining light colour quartz with white cement. As such, was used as partial cement replacement, acting filler mortars (SCWM) pastes (SCWP). Firstly, characterised by chemical, physical morphological properties. Afterwards, SCWM 10% Portland were produced and, replacement limestone fillers, commercially available, comparison purposes. The following engineering properties evaluated, flowability viscosity, electrical resistivity, porosity mechanical strength. In equivalent samples, heat hydration accessed. Finally, architectonic element prototype using SCWM-QP, aesthetics evaluated. All reached adequate deformability viscosity self-compaction. hardened state, compressive strength, resistivity water-permeable presented similar results incorporating fillers. isothermal calorimetry revealed slight desacceleration SCWP QP. major findings this study confirm feasibility QP, meeting required performance while reducing resource depletion industry adding value to by-product.
منابع مشابه
Properties of Self-compacting Concrete – an Overview
Self-compacting concrete can be defined as the concrete which requires no vibrations and can flow around obstructions, encloses the reinforcement and fills up the formwork completely under its self weight. Over the last ten years, significant amount of work has been carried out on self-compacting concrete all over the world. In countries like Japan, Sweden, Thailand, UK etc., the knowledge of S...
متن کاملUltra High Performance Self Compacting Concrete
Experiences in the development of Ultra High Performance Concrete found a very high flowability in concrete with low water powder ratio. Because of the high viscosity of the cement paste, compaction was necessary. To improve the compaction characteristics of the concrete the idea of adding coarse aggregate was developed. The first tests showed a good workability of the fresh concrete and a good...
متن کاملSelf-Compacting Concrete - Procedure for Mix Design
Self-compacting concrete is a fluid mixture suitable for placing in structures with congested reinforcement without vibration. Self-compacting concrete development must ensure a good balance between deformability and stability. Also, compactibility is affected by the characteristics of materials and the mix proportions; it becomes necessary to evolve a procedure for mix design of SCC. The paper...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied sciences
سال: 2023
ISSN: ['2076-3417']
DOI: https://doi.org/10.3390/app13137652