Clay and fibers: Energy efficiency in buildings between tradition and innovation

Cardinale, Tiziana; Sposato, Corradino; Feo, Andrea; Fazio, P.

doi:10.18280/mmep.050308

Cited by 6 publications

(4 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The amount of plastic aggregate was calculated as a replacement percentage for sand, calculated by volume, with a variation between 10 % and 50 % [11].…”

Section: Specimens Preparationmentioning

confidence: 99%

Energy and Mechanical Characterization of Composite Materials for Building with Recycled PVC

Cardinale¹,

Sposato²,

Alba³

et al. 2019

IJES

View full text Add to dashboard Cite

The diffusion of plastic materials had and still has a significant impact on the environment. Among these, PVC (polyvinylchloride) is certainly able to guarantee the best cost/performance ratio, high sustainability and absolute recyclability. In particular, this work refers to cement-based mortars with PVC compound used for electric cables sheathing. The aim was to verify the potential of a "new" mix-design in terms of energy efficiency and mechanical resistance of the finished products. Some mortar specimens were prepared using as basic components cement, water, sand and PVC as powder and granules. The plastic aggregate, in volumetric substitution of the sand, has been varied in proportions varying up to 50 % of the dry component. Different mixtures were prepared, all referred to a base one without PVC, to evaluate its influence on workability, thermal conductivity, compressive and flexural strength, capillary water absorption. Experimental results have shown that increasing the amount of PVC reduces density as well as compressive and flexural strength. However, PVC mortars show a greater resistance to capillary water absorption compared to the reference one, while the thermal conductivity values slightly decrease. This study is the basis for subsequent research based on further combinations of aggregates.

show abstract

“…The amount of plastic aggregate was calculated as a replacement percentage for sand, calculated by volume, with a variation between 10 % and 50 % [11].…”

Section: Specimens Preparationmentioning

confidence: 99%

Energy and Mechanical Characterization of Composite Materials for Building with Recycled PVC

Cardinale¹,

Sposato²,

Alba³

et al. 2019

IJES

View full text Add to dashboard Cite

show abstract

“…Innovation is a major development trend of modern society, and also a basic guarantee for a country or an enterprise to maintain sustained competitiveness. Therefore, it has attracted more and more researchers' attention and rapidly developed in various engineering fields [1][2][3][4]. The development of innovation is inseparable from the cultivation of senior talents, and the innovation ability of senior talents is a key feature for the effective implementation of higher education, which requires the higher education to use more innovation elements with the rapid development of scientific and technology in the 21st century [5,6].…”

Section: Introductionmentioning

confidence: 99%

An Evaluation Model for the Cultivation and Improvement of the Innovation Ability of College Students

Wang

Yan

2020

Int. J. Emerg. Technol. Learn.

View full text Add to dashboard Cite

In modern times, the innovation ability of college students is a focus of college education. However, the cultivation and improvement of this ability are constrained by many factors, and the ability is too complex to be evaluated accurately. To solve the problems, this paper puts forward an extension model suitable for evaluating the cultivation and improvement of the said ability. Firstly, the research problem was defined clearly as the evaluation of the cultivation and improvement for the innovation ability of college students. Based on the extension theory, an evaluation model was established for the cultivation and improvement of the said ability, the workflow of model implementation was explained, and the corresponding evaluation algorithm was designed in details. Finally, the proposed model and algorithm were proved operable through case analysis. The research results provide support to the solution of complex systematic decision-making problems.

show abstract

“…Actually, the burning is also a great waste of low-cost renewable resources. With light weight, large length-diameter ratio, high strength ratio and good biodegradability, the straws meet the requirements of Chinese sustainable development strategy [15,16]. If fibers can be extracted from the straws and included into the matrix of the AASCM, there will be a sharp decline in the energy consumption, environmental pollution and resource consumption in the building field.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Plant Fibers Reinforced Alkali-activated Slag Cementitious Material at High Temperature

Zhu¹,

Zheng²,

Sneed³

et al. 2019

ACSM

View full text Add to dashboard Cite

With the depletion of natural resources and the growing awareness of environmental protection, it is increasingly important to apply more renewable resources in construction material. Considering the low-cost and abundance of plant fibers, this paper proposes a novel cementitious material called plant fibers reinforced alkali-activated slag cementitious material (PF-AASCM). Specifically, the author investigated the types and features of fibers and how they affect the AASCM properties. On this basis, the influencing factors of the mechanical properties and microstructure of PF-AASCM were determined, and the measures to enhance the compressive and flexural strengths of the PF-AASCM were evaluated one by one. Next, the potential of applying plant fibers as internal enhancements of the AASCM was thoroughly explored. The results show that the PF-AASCM is economically and technically viable for many construction applications. The plant fiber reinforcement can enhance the ultimate strength of the AASCM rapidly (70 % growth in 7d and 120 MPa/17,000psi in 28d), resulting in excellent acid resistance and freeze-thaw durability. In addition, the optimal mix ratio is 1:4 wt.% between sodium hydroxide and potassium silicate. Under this ratio, the mechanical properties and microstructural features of the sample will be comparable to those of Portland cement. The compressive strength of single-row-hole sample of wheat straw reinforced AASCM was 10.75MPa at room temperature, equivalent to that of standard concrete sample MU7.5. The compressive strength of such a PF-AASCM decreased linearly with the growth in temperature. After the temperature reached 600 ℃, the plant fiber still exerted a certain tensile force on the matrix. By contrast, the polypropylene fiber started to melt down after the temperature increased to 200 ~ 400 ℃, causing brittle failure of the matrix. Under the high temperature of 200 ~ 400 ℃, the fine steel fiber enhanced the compressive properties of samples, which showed clear plastic deformation. The research results shed new light on reducing pollution and enhancing AASCM ductility.

show abstract

Clay and fibers: Energy efficiency in buildings between tradition and innovation

Cited by 6 publications

References 18 publications

Energy and Mechanical Characterization of Composite Materials for Building with Recycled PVC

Energy and Mechanical Characterization of Composite Materials for Building with Recycled PVC

An Evaluation Model for the Cultivation and Improvement of the Innovation Ability of College Students

Mechanical Properties of Plant Fibers Reinforced Alkali-activated Slag Cementitious Material at High Temperature

Contact Info

Product

Resources

About