Self-Cleaning Cement-Based Building Materials

نویسندگان

چکیده

The modern rhythm of human life leads to well-known problems, which are air, water and soil pollution climate warming. An increase in the power industries vehicles not only atmospheric by-products incomplete fuel combustion but also various microscopic particles that form aerosols, carry an obvious danger health pollute buildings’ facades. environmentally friendly building material with a hybrid method “Nano-titania gradient” was developed. This consists forming gradient n-TiO2 concentration composite since physical properties always inextricably linked geometry. To efficiency photocatalytic process, surface sensitization titanium dioxide use graphene oxide proposed, contributed overall photosensitivity. Thus, decomposition nitrogen by volume modified increased 27% comparison classic dioxide, volatile organic substances 32%. It found for facade plate made surface-sensitized TiO2, process self-cleaning is completed after 3 h irradiation start. Using theory percolation, range photocatalyst content calculated. facilitate material, waste cellulose introduced. (SS TiO2) proposed. analysis experimental-statistical models compressive strength shows optimum TiO2 from 0.8 1.1%, 0.4 0.8%, SS 0.7 0.8%. Analysis experimental statistical model bending optimal 0.6 1.0%, When studying structure composites, it sorbed on swollen fibers remained there cement hydration. effectiveness combining shown.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Hydrothermally treated cement - based building materials . Past , present , and future *

Hydrothermally cured or autoclaved cement-based building products have provided many challenges to researchers, manufacturers, and users since their inception nearly 100 years ago. The advantages, including the development of high strength within a few hours and a reduction of drying shrinkage, of the hydrothermal curing process have resulted in a variety of building products; inevitably, the t...

متن کامل

TiO2-SiO2 Coatings with a Low Content of AuNPs for Producing Self-Cleaning Building Materials

The high pollution levels in our cities are producing a significant increase of dust on buildings. An application of photoactive coatings on building materials can produce buildings with self-cleaning surfaces. In this study, we have developed a simple sol-gel route for producing Au-TiO₂/SiO₂ photocatalysts with application on buildings. The gold nanoparticles (AuNPs) improved the TiO₂ photoact...

متن کامل

Piezoresistive Cement-based Materials for Strain Sensing

Cement-based materials that exhibit piezoresistivity with sufficient magnitude and reversibility contain electrically conductive fibers. The phenomenon allows the materials to sense their own strain. The fibers are preferably discontinuous. Carbon fibers (15mm diameter) are most effective. Steel fibers (8 mm diameter) are less effective. Carbon filaments (0.1 mm diameter) are ineffective. The p...

متن کامل

Self-healing of early age cracks in cement-based materials by mineralization of carbonic anhydrase microorganism

This research investigated the self-healing potential of early age cracks in cement-based materials incorporating the bacteria which can produce carbonic anhydrase. Cement-based materials specimens were pre-cracked at the age of 7, 14, 28, 60 days to study the repair ability influenced by cracking time, the width of cracks were between 0.1 and 1.0 mm to study the healing rate influenced by widt...

متن کامل

ذخیره 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: Buildings

سال: 2022

ISSN: ['2075-5309']

DOI: https://doi.org/10.3390/buildings12050606