Does fine limestone powder react with moisture?
Best insight from top research papers
Fine limestone powder can react with moisture in certain conditions. In the preparation of limestone powder for concrete, a device and method are used to avoid contact with moisture in the air, which improves the performance of the limestone powder . Concretes containing coarse limestone powder as a partial cement replacement material have been found to have similar compressive strengths as control concrete, but with higher moisture transport behavior . In an environmentally-friendly mortar composition, fine limestone powder can react with barium hydroxide and silica fume to generate C-S-H gel and B-S-H gel, respectively . Impregnation of limestone powder with inorganic salts can lower the decomposition temperature and enhance moisture absorptivity . Additionally, an anti-humidity dehumidifying fine powder made from quick lime, silica gel, and montmorillonite can effectively dry and absorb moisture .
Answers from top 5 papers
More filters
| Papers (5) | Insight |
|---|---|
| The paper does not mention whether fine limestone powder reacts with moisture. | |
| The paper does not directly mention whether fine limestone powder reacts with moisture. | |
| The paper does not explicitly mention whether fine limestone powder reacts with moisture. | |
31 Citations | The provided paper does not mention anything about fine limestone powder reacting with moisture. |
| The paper does not explicitly mention whether fine limestone powder reacts with moisture. |
Related Questions
How does moisture content of aggregate affect the mechanical properties of concrete?4 answersThe moisture content of aggregates significantly impacts the mechanical properties of concrete. Studies have shown that varying moisture levels affect different types of concrete differently. For instance, in Ultra-high toughness cementitious composites (UHTCC), an increase in moisture content led to decreased compressive and tensile strengths, while enhancing the deformation capacity. Recycled aggregate concrete (RAC) exhibited improved workability with higher moisture content, with RAC prepared with air-dried aggregates showing better compressive strength and durability compared to other moisture states. Additionally, prewetting recycled aggregates optimized the workability and strength of concrete, with an optimal prewetted degree enhancing properties like reduced water absorption and chloride ion diffusion coefficients. Therefore, controlling aggregate moisture content is crucial for tailoring concrete properties to specific construction requirements.
How do building material affect interior relative humidity?5 answersBuilding materials can have a significant impact on interior relative humidity. Airtight construction and high-performance thermal insulation materials can lead to interstitial condensation and moisture intrusion into the walls when water vapor is generated inside the building. Hygroscopic building materials, such as cellulose fiber insulation, can help prevent interstitial condensation by adsorbing and desorbing moisture. The use of construction or thermal insulation materials in a humid environment can increase energy consumption and reduce the building's energy efficiency. The hygrothermal behavior of building partitions, such as gypsum board and cement-lime plaster, can affect the water vapor exchange and indoor relative humidity fluctuations. Applying a paint coat to the interior surface of a building partition can limit the material's moisture buffering properties and increase indoor relative humidity fluctuations. Functional indoor building finishing materials with improved moisture absorption and moisture-proof function can contribute to indoor humidity control.
What is the content of limestone?5 answersLimestone is a sedimentary rock composed mainly of calcium carbonate minerals, such as calcite. The main mineral content in limestone is calcium carbonate (CaCO3), which makes up about 95% of the rock. Other minerals found in limestone include dolomite and clay minerals, which make up about 3% of the rock, with the remaining percentage being clay minerals. Limestone is widely used in various industries and construction due to its abundance and low cost. It is also used as a mineral admixture in the production of blended Portland cement, where it helps reduce CO2 emissions. Limestones can also contain fluid inclusions, which can influence decarbonisation processes.
Does moisture cause spattering during slm?2 answersMoisture content has been found to strongly affect spattering during selective laser melting (SLM). The study conducted by Ze Ji and Quanquan Han demonstrates that the combustion rate and burnout of sludge in SLM processes depend on the moisture content, with an optimal moisture content for best combustion performance and minimum heavy metal leaching. The authors also observed that the shrinkage rate of sludge during combustion is proportional to the moisture content. These findings suggest that moisture plays a significant role in the spattering behavior during SLM processes.
What is the moisture content of mullite?3 answersMullite has different moisture content depending on its synthesis and firing conditions. The moisture content of mullite can affect its crystallization process and reactivity with moisture. For example, in the synthesis of mullite using sol-gel method, the variation of water content during the synthesis caused great variations in the course of mullitization process. Additionally, the reactivity of mullite with moisture is directly related to the crystallinity of the fired clay. Furthermore, exposure of mullite to a water-rich gas mixture at high temperatures can result in surface decomposition and the formation of sodium-containing aluminosilicate glass and α-alumina within melt cavities. Therefore, the moisture content of mullite can vary depending on its synthesis method, firing temperature, and exposure conditions.
What is the moisture content of glass powder?4 answersThe moisture content of glass powder can be controlled by various methods. One method involves contacting the silica powder with steam in a vessel held at a temperature lower than the condensation temperature of the steam. Another method is the thermally assisted alkali activation of silica-rich glass powder, which produces sustainable binders. These binders are found to disintegrate and lose strength when exposed to moisture or an alkaline solution, with the pure glass powder binders suffering the highest strength loss. Additionally, a powder moisture detecting machine has been developed that can quickly detect the moisture of a powdery substance, including glass powder, in a real-time, on-line, non-contact, and damage-free manner. However, the specific moisture content of glass powder is not mentioned in the abstracts provided.