scholarly journals A Study on Strength and Xrd Analysis of Carbonated Concrete

2018 ◽  
Vol 7 (4.2) ◽  
pp. 35
Author(s):  
M. Jothilingam ◽  
Dr. Pratheeba Paul ◽  
. .
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Emissions ◽  
Cost Effective ◽  
Xrd Analysis ◽  
Green Technology ◽  
Accelerated Carbonation ◽  
Industrial Carbon ◽  
Safe Technology ◽  
Number Of Factors ◽  
Corrosion Of Steel

There are number of factors which control the rate of process of natural carbonation and make it very slow in cement based material. Studies show that the effect of carbonation is mostly limited to corrosion of steel reinforcement in R.C.C. structures (including cover depth design and service life prediction). Research at global level is focused on developing a cost effective and safe technology for the possibility of carbon dioxide sequestration as per IPCC guide lines, and attempts are being made to apply the accelerated carbonation technology for CO2 sequestration in concrete.  This paper discusses about the detailed study on the uptake quantity of carbon dioxide in concrete, increase of strength and changes in mineral content by adopting. The concrete grades of M15, M20, M25 and M30 were taken for investigating the strength with respect to time of exposure and pressure by adopting Accelerated Carbonation Technology by using commercially available pure CO2 for carbonation curing. After the testing of concrete for strength, XRD analysis was carried out to study the conversion of calcium hydroxide into calcium carbonate due to carbonation.  This green technology would help cement, concrete, precast product and other similar manufacturing industries to obtain carbon credit and they can adopt this green technology to reduce their industrial carbon dioxide emissions into the atmosphere to reduce global warming. 

scholarly journals Early decarbonisation of the European energy system pays off

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Marta Victoria ◽  
Kun Zhu ◽  
Tom Brown ◽  
Gorm B. Andresen ◽  
Martin Greiner
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Emissions ◽  
Carbon Budget ◽  
Cost Effective ◽  
Energy System ◽  
Paris Agreement ◽  
Offshore Wind ◽  
Solar Photovoltaic ◽  
Sharp Reduction ◽  
Initial Reduction

AbstractFor a given carbon budget over several decades, different transformation rates for the energy system yield starkly different results. Here we consider a budget of 33 GtCO2 for the cumulative carbon dioxide emissions from the European electricity, heating, and transport sectors between 2020 and 2050, which represents Europe’s contribution to the Paris Agreement. We have found that following an early and steady path in which emissions are strongly reduced in the first decade is more cost-effective than following a late and rapid path in which low initial reduction targets quickly deplete the carbon budget and require a sharp reduction later. We show that solar photovoltaic, onshore and offshore wind can become the cornerstone of a fully decarbonised energy system and that installation rates similar to historical maxima are required to achieve timely decarbonisation. Key to those results is a proper representation of existing balancing strategies through an open, hourly-resolved, networked model of the sector-coupled European energy system.

scholarly journals How Does Green Technology Innovation Affect Carbon Emissions? A Spatial Econometric Analysis of China’s Provincial Panel Data

2021 ◽  
Vol 9 ◽  
Author(s):  
Aixin Cai ◽  
Shiyong Zheng ◽  
LiangHua Cai ◽  
Hongmei Yang ◽  
Ubaldo Comite
Keyword(s):  
Carbon Dioxide ◽  
Sustainable Development ◽  
Economic Development ◽  
Panel Data ◽  
Technological Innovation ◽  
Carbon Emissions ◽  
Carbon Dioxide Emissions ◽  
Technology Innovation ◽  
Green Technology ◽  
Research Results

Due to an increasing number of issues such as climate change, sustainable development has become an important theme worldwide. Sustainable development is inseparable from technological innovation. Only by making technological breakthroughs can we ensure the overall integration of economic development and environmental protection. Here, based on China’s inter-provincial panel data from 2006 to 2019, we examine the relationship between green technological innovation and carbon dioxide (CO2) emissions in 30 provinces (excluding Hong Kong, Macao, Taiwan, and Tibet) and sub-regions (eastern, central, and western China) in China using a space panel econometric model based on the STIRPAT equation. Additionally, we use geographic information analysis methods to analyze the spatial pattern and evolution characteristics of CO2 emissions. Our major finding is that, from the perspective of the whole country, green technology innovation has a negative correlation with carbon emissions, but the effect is not obvious. In addition, from the regional sample, green technology innovation in the eastern and central regions can effectively reduce carbon emissions, while in the western region, green technology innovation can promote carbon emissions in the province. At the same time, the research results show a strong spatial spillover effect of inter-provincial carbon dioxide emissions, and the progress of green technology in neighboring provinces has a negative impact on carbon emissions in their own provinces. Therefore, cross-province policies and actions for reducing carbon emissions are necessary. Additionally, our results show that carbon-emission driving factors, such as economic development, industrial structure, energy consumption structure, and population, have a significant positive effect on carbon dioxide emissions. Based on the above research results, we put forward corresponding policy recommendations.

China City Industrial Structure Planning and Industry Trends of Low Carbon Economy

2012 ◽  
Vol 573-574 ◽  
pp. 977-983
Author(s):  
Yu Xing Chen ◽  
Hui Luo
Keyword(s):  
Carbon Dioxide ◽  
Energy Consumption ◽  
Carbon Dioxide Emissions ◽  
Energy Intensity ◽  
Productivity Index ◽  
Low Carbon ◽  
Low Carbon Economy ◽  
Industrial Carbon ◽  
Industrial Energy ◽  
Carbon Economy

The article in had the selection based on industrial energy consumption, industrial energy intensity, industrial carbon dioxide emissions, industrial carbon dioxide Emissions intensity and industrial carbon productivity index analysis such as China's industrial economic development three stages of evolution characteristics of low carbon, and according to the 1985 ~ 2007 China work Industry economic data through the regression analysis forecast industry a low carbon economy future development tendency. The analysis results show that, from 1985 to 2007 years although energy consumption Quantity and industrial carbon emissions overall a growing trend, but the industrial strength of energy consumption declined, industrial carbon production ability enhancement, industrial energy intensity reducing to reduce co2 emissions larger contribution, based on this proposed to promote the development of China's industrial low carbon specific Suggestions.

scholarly journals THE DECOMPOSITION AND DYNAMICS OF INDUSTRIAL CARBON DIOXIDE EMISSIONS FOR 287 CHINESE CITIES IN 1998-2009

2016 ◽  
Vol 30 (3) ◽  
pp. 460-481 ◽  
Author(s):  
Maximilian Auffhammer ◽  
Weizeng Sun ◽  
Jianfeng Wu ◽  
Siqi Zheng
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Emissions ◽  
Chinese Cities ◽  
Industrial Carbon

scholarly journals The Impact of Green Technology Innovation on Carbon Emissions in the Context of Carbon Neutrality in China: Evidence from Spatial Spillover and Nonlinear Effect Analysis

2022 ◽  
Vol 19 (2) ◽  
pp. 730
Author(s):  
Shihong Zeng ◽  
Gen Li ◽  
Shaomin Wu ◽  
Zhanfeng Dong
Keyword(s):  
Carbon Dioxide ◽  
Carbon Emissions ◽  
Carbon Dioxide Emissions ◽  
Technology Innovation ◽  
Green Technology ◽  
Total Carbon ◽  
Marginal Rate ◽  
Spatial Spillover ◽  
Carbon Neutrality ◽  
The Impact

The Paris agreement is a unified arrangement for the global response to climate change and entered into force on 4 November 2016. Its long-term goal is to hold the global average temperature rise well below 2 °C. China is committed to achieving carbon neutrality by 2060 through various measures, one of which is green technology innovation (GTI). This paper aims to analyze the levels of GTI in 30 provinces in mainland China between 2001 and 2019. It uses the spatial econometric models and panel threshold models along with the slack based measure (SBM) and Global Malmquist-Luenberger (GML) index to analyze the spatial spillover and nonlinear effects of GTI on regional carbon emissions. The results show that GTI achieves growth every year, but the innovation efficiency was low. China’s total carbon dioxide emissions were increasing at a marginal rate, but the carbon emission intensity was declining year by year. Carbon emissions were spatially correlated and show significant positive agglomeration characteristics. The spatial spillover of GTI plays an important role in reducing carbon dioxide emissions. In the underdeveloped regions in China, this emission reduction effect was even more significant.

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