scholarly journals Feasibility study of recycled tire powder in construction blocks cement to decrease environmental pollution (a case study: Ahvaz, Iran)

2015 ◽  
Vol 37 ◽  
pp. 269
Author(s):  
Mohsen Eslami ◽  
Farzaneh Fakeri Raof ◽  
Mohammad Jorjor Zadeh
Keyword(s):  
Compressive Strength ◽  
Environmental Pollution ◽  
Environmental Protection ◽  
Construction Industry ◽  
Stress Test ◽  
Building Blocks ◽  
Scrap Tires ◽  
Rubber Powder ◽  
The World

Today, retrieval and optimal use of exiting recourses and environmental protection is in view of seriousattention of the development in the world. Approximately 300 thousand tons of old tires in the country hascaused environmental pollution. Recycling of waste tires is completely different to which is done in our country.Unfortunately recycling scrap tires has not favorable growth in our country. Millions of tires are discarded eachyear, and the scrap piles of rubber this creates pose serious environmental problems. Rubber tires also leachhazardous materials into the environment as they decompose. This study was performed in Ahvaz metropolitan.In this study there are 9 building blocks which had different percentages of rubber powder as filling materials.Pressure test done on these blocks. The result of the stress test on the samples compared with the result of thestress test on the main samples. The comparison showed that by adding 10% of rubber powder instead of fillermaterial in the process of preparing the block, there was no change in compressive strength. Therefore this blockwill be replaced by blocks used in construction industry. At least some of the environmental hazards caused byincorrect tire were buried as were recommendation to improve.

Establishment of Fiscal and Taxation Policies for Environmental Protection System

2013 ◽  
Vol 295-298 ◽  
pp. 2211-2214
Author(s):  
Jin An
Keyword(s):  
Quality Of Life ◽  
Sustainable Development ◽  
Environmental Pollution ◽  
Environmental Protection ◽  
Improve Quality ◽  
Taxation Policy ◽  
The World ◽  
The Relationship ◽  
Great Damage

Environmental pollution and ecological degradation in China have continued to be serious problems and have inflicted great damage on the economy and quality of life. As the largest developing country, China’s fiscal and taxation policies on environmental protection and sustainable development will be of primary importance not only for China, but also the world. By taking a critical look at the development of Chinese environmental fiscal and taxation policy, we try to determine how best to coordinate the relationship between the environment and the economy in order to improve quality of life and the sustainability of China’s resources and environment.

scholarly journals An Investigation on the Adoption of Electronic Commerce Systems for the Operators of Construction Companies

2020 ◽  
Vol 9 (1) ◽  
pp. 9
Author(s):  
Nafisa Bello Issa ◽  
Angela Siew Hoong Lee
Keyword(s):  
Construction Industry ◽  
Diffusion Of Innovation ◽  
Technological Factor ◽  
Construction Workers ◽  
Relative Advantage ◽  
Construction Companies ◽  
The World ◽  
Innovation Model ◽  
Internal And External Factors

E-commerce is emerging and growing in all kinds of businesses and industries over the world especially in the construction industry. This research focuses on the adoption of business-to- business kind of e-commerce in construction industry. This research aims to identify the motivational and barrier factors of the construction workers in influencing the adoption of e- commerce specifically in the construction industry world. As part of the research, a multinational company, which produces tools for the construction industry, will be used as a case study to look into how the customers of this company are adopting e-commerce. This research uses the Diffusion of Innovation model as the based research framework to understand the factors that explain the rate of adoption and how these factors are influencing the adoption in the construction industry. Other internal and external factors of companies such as the organizational factor, technological factor digital readiness will also be looked into to understand their influence as well when it comes to adoption of e-commerce. Data collection is done by distributing questionnaires to the related participants in the construction industry. Findings from this study provides insights on the factors of adoption by applying the diffusion of innovation model and recommendation of strategies for this industry to address the problem of low adoption of e-commerce among construction workers in the construction industry. This research showed that relative advantage, compatibility, complexity, Trialability, organizational readiness and trust are significant factors leading to the adoption of e-commerce systems. Culture as well as technological and digital readiness were found to be insignificant. Overall, the study’s findings enrich the discourse related to the adoption of e-commerce systems by construction companies in Asia and other parts of the world. The findings will be relevant for construction companies around the world planning to introduce or improve the e-commerce adoption of the customers. The study’s findings could also be relevant for future analysis of e-commerce adoption.

Analysis of the Environmental Benefits of Organic Agriculture

2012 ◽  
Vol 610-613 ◽  
pp. 3206-3211 ◽  
Author(s):  
Qiu Min Li ◽  
Fa Gen Yang ◽  
Wu Di Zhang ◽  
Fang Yin ◽  
Xing Ling Zhao ◽  
...  
Keyword(s):  
Sustainable Development ◽  
Environmental Pollution ◽  
Environmental Protection ◽  
Organic Agriculture ◽  
Agricultural Development ◽  
Environmental Benefits ◽  
Development Model ◽  
Environmental Characteristics ◽  
The World

Environmental protection has draw the attention of the world with the today's environmental pollution increasingly serious, organic agriculture as a new agricultural development model which has less impact on the environment and sustainable development had rapidly developed and promoted in the word. This article mainly analyses and evaluates the advantages and benefits of organic agriculture in environmental protection, to demonstrate their environmental characteristics, and fully affirmed the contribution of organic agriculture in terms of environmental protection so that to provide a reference for the development of organic agriculture.

scholarly journals Categorization of Construction Waste

10.29007/919j ◽  
2018 ◽  
Author(s):  
Parth Raval ◽  
Jaydev Bhavsar ◽  
Dharmesh Oza
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Value Added ◽  
Residential Building ◽  
Research Projects ◽  
Cost Overruns ◽  
Construction Waste ◽  
The World ◽  
Building Project

Waste in the construction industry has been the theme of several research projects around the world in recent years. Researchers implement different methods to reduce the amount of waste in the construction industry. In the construction industry, contractors only consider physical waste which leads the project to cost overruns. i.e. material waste. Construction industry is also affected by time overrun. Impact of time overrun on the construction projects is considerably high and requires special attention in addition to physical waste. In the present study, construction waste is categorized in mainly of two types: value added waste and non-value added waste. This categorization includes both-material waste as well as time waste, which are main causes of occurrence of waste. A case study was also carried out at a residential building project in Ahmedabad, Gujarat to get the idea about the percentage of waste occurs in a construction project.

scholarly journals The Importance of Public Awareness in Environmental Protection: A Case Study in Paktika, Afghanistan

2021 ◽  
Vol 20 (4) ◽  
Author(s):  
Hizbullah Rahmani ◽  
Wafaurahman Wafa ◽  
Fayaz Gul Mazloum Yar
Keyword(s):  
Higher Education ◽  
Environmental Pollution ◽  
Environmental Protection ◽  
Public Awareness ◽  
Field Observations ◽  
Environmental Laws ◽  
Pollution Management ◽  
Scientific Principles ◽  
Important People

Public awareness and knowledge of environmental protection are crucial to avoid environmental pollutions. Lack of relevant scientific principles and lack of public awareness of environmental or other projects are hindrances to controlling environmental pollution. The objective of the study was to identify the importance of public awareness in environmental pollution management. Environmental education and public awareness are crucial to avoid environmental pollutions. The study aims to analyze public awareness of environmental protection. The study was conducted in Sharana, the center of Paktika province, and was attended by 71 students from the Paktika Higher Education Institute’s Education Faculty. Questionnaires and field observations have been selected as methodologies for this research. The results of the study show that 59.2 percent of survey participants consider public awareness and 35.2 percent think that enforcement of environmental laws is important. People in Paktika do not take part in environmental activities due to a lack of public awareness and throw away pollutants everywhere. If this situation continues, it is not far off that it will turn into a disaster.

Application Management Analysis of Construction Environmental Protection Materials and Energy Saving Technology

2020 ◽  
Vol 5 (1) ◽  
pp. 1-2
Author(s):  
An Zhang ◽  
Keyword(s):  
Environmental Pollution ◽  
Energy Saving ◽  
Environmental Protection ◽  
Construction Industry ◽  
Green Energy ◽  
Construction Engineering ◽  
Application Management ◽  
Energy Saving Technology

In recent years, with the acceleration of industrialization, environmental pollution is increasingly serious, and more and more attention to environmental problems.In today’s construction industry in today’s society, new green energy saving technologies are gradually emerging, so that people can meet the relevant needs of the environment. This paper expounds the green energy saving technology applied in construction engineering.

Utilizing of Crumb Rubber Derived Recycled Scrap Tires in Masonry Application: A Review

2021 ◽  
Vol 1030 ◽  
pp. 73-87
Author(s):  
Amin Al-Fakih ◽  
Bashar S. Mohammed ◽  
M.S. Liew ◽  
M.W.A. Wahab ◽  
Sani Haruna
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Manufacturing Process ◽  
Physical And Mechanical Properties ◽  
Crumb Rubber ◽  
Fine Aggregate ◽  
Scrap Tire ◽  
Scrap Tires ◽  
Literature Research ◽  
The World

The Disposal of Scrap Tires has Resulted in Major Environmental Problems Worldwide. Therefore, Utilizing Scrap Tires as Crumb Rubber is being Used in Brick Production to Improve the Properties of the Bricks as well as to Provide Feasible Waste Management of Scrap Tires. this Study Presents the Literature Research on Utilizing Crumb Rubber in Bricks Manufacturing. the Review Summarized the Manufacturing Process of Producing Crumb Rubber and then Documented the Application of Crumb Rubber in Masonry. the Results Show that the Compressive Strength of Masonry Bricks Decreases with the Increased Percentage Substitution of Crumb Rubber as a Replacement of Fine Aggregate while the Water Absorption Increased. Moreover, the Addition of Crumb Rubber in Masonry Applications Reduce the Density which Produce Lightweight Masonry Products. Generally, the Findings Confirmed that the Masonry Bricks Incorporated Crumb Rubber Exhibit Good Physical and Mechanical Properties. the Usage of Crumb Rubber in Bricks Making Helps to Solve Problems Associated with Scrap Tire Management all over the World.

scholarly journals Experimental Investigation and Statistical Modeling of FRP Confined RuC Using Response Surface Methodology

2019 ◽  
Vol 5 (2) ◽  
pp. 268 ◽  
Author(s):  
Xiong Feng ◽  
Rana Faisal Tufail ◽  
Muhammad Zahid
Keyword(s):  
Compressive Strength ◽  
Response Surface ◽  
Statistical Models ◽  
Coarse Aggregate ◽  
Concrete Strength ◽  
Substantial Reduction ◽  
Fine Aggregate ◽  
Rubberized Concrete ◽  
Scrap Tires ◽  
The World

Scrap tires that are dumped to landfill is a serious problem in China and rest of the world. The use of rubber in concrete is an effective environmental approach to reduce the amount of scrap tires around the world. However, the loss in compressive strength of concrete is a major drawback of rubberized concrete. In this paper, the fiber reinforced polymer (FRP) confinement technique is used to overcome the drawbacks of rubberized concrete (RuC). A total of sixty six RuC cylinders were tested in axial compression. The cylinders were cast using recycled rubber to replace, a) 0-50 percent fine aggregate volume, b) 0-50 percent coarse aggregate volume, and c) 40-50 percent fine and coarse aggregate volume. Twenty seven cylinders of the latter mix were then confined with one, two and three layers of CFRP jackets. Concrete suffered a substantial reduction in compressive strength up to 80 percent by fine and coarse aggregate replacement with rubber content. However, CFRP jackets recovered and further enhanced the axial compressive strength of RuC up to 600% over unconfined RuC. SEM was performed to investigate the microstructural properties of RuC. Statistical models were developed on the basis of experimental tests for FRP confined RuC cylinders using response surface method. The effect of variable factors; unconfined concrete strength, rubber replacement type and number of FRP layers on confined compressive concrete strength was investigated. The regression analysis was performed to develop the response equations based on quadratic models. The predicted and experimental test results were found in good agreement as the variation between experimental and predicted values were less than 5%. Furthermore, the difference between predicted and adjusted R2 was found to be less than 0.2 which shows the significance of the statistical models. These proposed statistical models can provide a better understanding to design the experiments and the parameters affecting FRP-confined RuC cylinders.

scholarly journals Evaluation of the influence of aggregate type on selected properties of epoxy mortars

2018 ◽  
Vol 49 ◽  
pp. 00018
Author(s):  
Bernardeta Dębska ◽  
Katarzyna Wójcik
Keyword(s):  
Compressive Strength ◽  
Granular Materials ◽  
Construction Industry ◽  
Construction Materials ◽  
Adverse Impact ◽  
Natural Aggregate ◽  
Rubber Waste ◽  
The World ◽  
Research Centres ◽  
Properties Of Composites

Aggregates, or granular materials, are currently one of the most sought-after construction materials. Natural aggregate deposits are quite common in the world, but their widespread consumption and progressive environmental degradation forces many countries to take measures to reduce the depletion of natural resources. One of the solutions is the use of alternative aggregates. The use of this type of aggregates enables further minimization of the volume of wastes and their adverse impact on the environment and the neutralisation of the remaining waste by, among others, production of artificial aggregates. Forecasts for the future assume a reduction in the production of artificial aggregates, brought about by the production of alternative aggregates from recycling. Many research centres around the world conduct research on the assessment of the effect of various aggregates on the properties of concrete and mortar. This article compares selected properties, i.e. the flexural and compressive strength and bulk density of epoxy mortars, in which the natural aggregate has been partially replaced by perlite, expanded clay and rubber waste pellets. The type of filler used differentiates the mortar characteristics recorded. The tested properties of composites indicate the possibility of their use in construction industry.

scholarly journals Comparative Evaluation of Potential Impacts of Agricultural and Industrial Waste Pozzolanic Binders on Strengths of Concrete

2021 ◽  
pp. 1-8
Author(s):  
Hafiz Muhammad Nadir ◽  
◽  
Ash Ahmed ◽  
Keyword(s):  
Compressive Strength ◽  
Construction Industry ◽  
Waste Disposal ◽  
Industrial Waste ◽  
High Performance Concrete ◽  
Supplementary Cementitious Materials ◽  
Waste Materials ◽  
Optimum Quantity ◽  
The World ◽  
Maximum Compressive Strength

Concrete is one of the most widely used construction material in the world which uses aggregates and cement as a binder. Use of cement concrete and mining/ transportation of raw materials makes the construction industry the biggest emitter of CO2 by contributing up to 7-10% of global emissions. The waste materials from different industries and agriculture contribute to 90% of waste disposal/ recycling effort in the world. This research has focused to use a selection of waste materials as supplementary cementitious materials (SCM) to minimize the emission of CO2 and recycling/ absorption of waste from other industries to construction industry to make it more sustainable. The contemporary research has established use of pulverized fly ash (PFA), silica fume (SF), metakaolin (MK) and granulated ground blast furnace slag (GGBS) as suitable SCMs. This study has focused on using two established industrial waste SF and MK and two agricultural wastes, rice husk ash (RHA) and palm ash (PA), to determine and compare their potential use as pozzolanic SCMs and to expand the family of alternative pozzolanic binders in addition to PFA and GGBS. The w/c (w/b) ratio was 0.4 with an intended design mix strength classification of C50/60. The chemical composition of all the materials was determined through x-ray spectrometry/ diffraction test to ascertain the chemistry. All four materials satisfied the ASTM constituent criteria for pozzolans. In comparison to the control mix (100% cement content), all these materials improved the compressive strength from 2.5% to 30% and enhanced tensile strength from up to 17%, indeed all the SCM mixes had a higher compressive strength than the control. RHA exhibited the best performance in agricultural waste with 10% optimum quantity to give maximum compressive strength of 83 MPa and PA exhibited the optimum performance with 2.5% content and gave maximum compressive strength of 78 MPa. The addition of MK progressively increased the compressive strength with 20% content mix giving a strength of 84 MPa. The SF performed the best at optimum quantity of 2.5% and exhibited the highest compressive strength of 90 MPa. The results suggest that these SCM based concrete are recommended for formulation of high-strength concrete applications, i.e., 60+ MPa. Furthermore, all the SCMs had at least one mix which satisfied the C60/75 classification without reducing the w/b ratio below 0.4; this has significant positive ramifications for the development of sustainable high-performance concrete. The absorption of waste materials from industrial and agricultural fields can substantially reduce waste disposal and more pertinently facilitate in reducing the CO2 emission associated with the construction industry

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