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Sealants, Insulation and Barriers and How to Install Them
Published in Stan Harbuck, Donna Harbuck, Residential Energy Auditing and Improvement, 2021
Rock wool or mineral wool batt insulation is used and installed much like fiberglass batt insulation, except that since it has a fire resistance rating, it can make contact with high temperature exposures such as flues and chimneys. Another important advantage of some rock or mineral wool batt insulation is that some types appear to have a “memory.” In other words, even if it is compressed when installed, it will decompress soon after being installed. Fiberglass batts are not known for this.
The Building Structure/Saving Money
Published in Dale R. Patrick, Stephen W. Fardo, Ray E. Richardson, Brian W. Fardo, Energy Conservation Guidebook, 2020
Dale R. Patrick, Stephen W. Fardo, Ray E. Richardson, Brian W. Fardo
A widely used type of insulation is mineral wool, which is either fiber glass or rock wool. Mineral wool insulation is available in several types, including blankets, blown insulation, poured insulation, and batts. Blankets come in rolls, with or without vapor barriers. Blankets without vapor barrier are called unfaced insulation. Blown insulation is composed of loose pieces of insulation which are blown by air pressure into attics. Batts are like blankets but are precut to 4-foot or 8-foot lengths.
Thermal/Acoustical Insulation and Interior Wall/Ceiling Materials
Published in Kathleen Hess-Kosa, Building Materials, 2017
Mineral wool, also referred to as rock wood and slag wool, insulation was first introduced in 1875 and has since remained popular until the 1950s. To this day, however, nonirritating mineral wool is a viable option to skin and respiratory irritating fiberglass insulation. Mineral wool is manufactured by heating a mixture of lava rock (e.g., basalt) and steel slag (e.g., silicon, aluminum, magnesium, and sulfur) to about 3000°F. The molten mix is spun and blown through a spinning screen that turns the mix to fine fiber. As a loose fill insulation, mineral wool is generally treated with an oil to keep the dust down. On the other hand, mineral wool rolls/batting require a binder (e.g., glue). In some instances, this binder may be, depending on the manufacturer, “cured urea extended phenolic formaldehyde.” Wet batting could result in formaldehyde emissions.
Investigation of the occurrence of binder material on airborne respirable mineral wool fibers
Published in Journal of Occupational and Environmental Hygiene, 2023
M. Solvang, D. V. Okhrimenko, C. Koch
Mineral wool insulation products are used globally in the construction industry for thermal and acoustic insulation of the building envelope, as facade cladding and fire protection. In addition, mineral wool products are used for a variety of other applications such as growing substrates in the horticultural industry, noise-reducing acoustic fences, and urban water management solutions. The mineral wool insulation market consists of three main groups of material, i.e., stone, glass, and slag wool (Yue and Solvang 2021). The division into groups is made based on the raw material used and hence the chemical composition of the fiber. Typically, stone, glass, and slag wool are produced using two different spinning technologies (Zu et al. 2021) that both result in a product consisting of inorganic fibers generally having a geometric mean diameter (GMD) equal to 2–6 µm. For stone and slag wool, the product also includes inorganic non-fiberized and quenched melt particles with a spherical shape.
Thermal and sound insulation performance assessment of vacuum insulated composite insulation panels for building façades
Published in Advances in Building Energy Research, 2021
Sound insulation performance of foam core CIPs is often insufficient (Ballagh, 2010) and regularly, an extra sound barrier layer is needed. Sound insulation of CIPs is measured by evaluating the Sound Reduction Index () which is a frequency dependent parameter. Generally, sound reduction index of foam core panels is around 30 dB (Ballagh, 2010). Mostly, mineral wool is used where higher sound insulation is required (Azimi, 2017) but has lower thermal insulation and compressive strength properties. The sound transmission loss of a building element can be increased by adding mass to the element according to the Mass Law which states that sound insulation increases by almost 6 dB for every doubling of mass or frequency provided that the panel behaves as a single solid component (Praščević, Cvetković, & Mihajlov, 2012). Mass Law can be described mathematically as shown in Equation (1) (Long, 2014; Tadeu & Mateus, 2001) is a constant which is 42.3 for normal incidence and 47.3 for random angle of incidence.
Investigation on the effect of MgO content on the crystallization behavior of synthetic BF slag
Published in Materials and Manufacturing Processes, 2018
Qian-Qian Ren, Yu-Zhu Zhang, Yue Long, Zong-Shu Zou, Shao-Sheng Chen, Jie Li
Blast furnace (BF) slag is the main industrial waste produced by the metallurgical industry and is considered a secondary resource.[123] Approximately 300–350 kg of BF slag is generated per ton of iron used, and nearly 256 million tons of BF slag are produced annually in China.[4,5] BF slag is generally utilized to produce low-value-added products, such as cements and construction materials.[678] The quenching temperature of BF slag is between 1400 and 1500°C, and a large quantity of latent heat is generated. The latent heat of molten BF slag is not effectively used by the cement manufacturing and civil engineering industries.[9] Therefore, with regard to the economy, and the production of green steel, it is important to identify an efficient approach for the utilization of BF slag.[101112] Mineral wool consists of fluffy, short, and fine fibers; it is nonburning and offers high corrosion resistance. Mineral wool can be used as a material for sound and shock absorption, and heat insulation. The production of mineral wool using BF slag is an effective approach to utilize both the waste and its latent heat.[131415]