China
Africa
Explore chapters and articles related to this topic
Thermal/Acoustical Insulation and Interior Wall/Ceiling Materials
Published in Kathleen Hess-Kosa, Building Materials, 2017
Well designed and installed building insulation can (1) save money on energy bills; (2) reduce reliance on heating and cooling systems; and (3) improve thermal comfort. Yet, there remains a potential for some insulation to negatively impact the indoor air quality. From natural fibers to cellulose to minerals-and-metals to fiberglass to the world of plastics, some advances in technology bring unintended consequences! See Table 14.1.
Experimental and numerical investigation of eco-friendly materials for building envelope
Published in Advances in Building Energy Research, 2022
Ouahiba Mrajji, Salma Ouhaibi, Mohamed E. L. Wazna, Abdeslam E. L. Bouari, Naoual Belouaggadia, Mohammed Ezzine, Rachid Lbibb, Omar Cherkaoui
Research has been conducted to investigate the possibility of integrating thermal insulation made from natural and recycled materials. Those researches indicate that the thermal performance of these materials is comparable to standard insulation materials. (Patnaik et al., 2015) developed five samples from recycled wool waste and polyester fibres to evaluate their performance, including biodegradation behaviour. The results show that these alternative materials contribute to the reduction of insulation costs and the green building initiative through the development of materials from natural and recycled resources. (Hadded et al., 2016) determined the thermal conductivity coefficients of two samples of textile waste. The results show that recycled textile materials have competitive thermal properties and could be used in building insulation materials. (SairSair et al., 2017) studied the effect of surface modification on the thermal conductivity of hemp fibre reinforced polyurethane composite. The results show that the alkaline treatment at the concentration 8% improves the hemp fibre properties, and the thermal conductivity values go from 0.04792 (W/m.K) to 0.04222 (W/m.K) for the chemical treatment of the hemp fibre at the concentration 8%. The insulation materials mentioned in (Hadded et al., 2016; Patnaik et al., 2015; Sair et al., 2017), despite presenting a good thermal property, has many disadvantages, these insulators are derived from petrochemistry, irritating nature, the release of toxic gas in case of fire, high price.
Preparation and characterization of low-cost waterproofing sheets from NR-loaded clay
Published in HBRC Journal, 2020
M.M. Abd El Kader, A.S. El Deeb
In an effort to make buildings more efficient and following up on the rapid growing of the building and construction industry, scientists and engineers are collaborating with architects to develop advanced low-cost energy-efficient building materials. Building insulation refers to any object in a building used as insulation for any purpose while the majority of insulation in building is for thermal purposes, the term also applied to acoustic insulation, fire insulation and waterproofing. Often an insulation material will be chosen for its ability to perform several of these functions at once. One of the most important materials in commercial and residential buildings is the waterproofing membranes that protect construction materials from destruction. Efforts on a large scale have been made by the polymer industry to develop cost-effective techniques to convert low-cost materials into processable forms. Utilization of these materials as building materials appears to be a viable solution not only to the problem of the high-cost building materials but also to get rid of pollution problem resulted from the manufacture of traditional building materials. The increase in the popularity of using environmentally friendly and low-cost construction materials in the building industry brings the need for searching more innovative, flexible and versatile composites. Low-cost fillers are integrated with a rubber matrix to improve waterproofing, thermal and mechanical performances of new building products. Thermal conductivity performance is an important criterion for building material. Insulation reduces unwanted heat loss or gain enhancing the thermal performance inside the building and cause a reduction in cooling and air conditioning loads, leading to a reduction of electrical energy consumption causing more energy saving [1,2].