Experimental Study of the Effect of Water Reducer on the Plaster Board Production in Low Energy-Consumed Way

2011 ◽  
Vol 250-253 ◽  
pp. 969-973
Author(s):  
Jing Sun ◽  
Xiao Hong Cong ◽  
Hong Bo Liu ◽  
Li Sun

As a green building material, the demand for plaster board is growing with the promotion of the wall materials reform policy and development of the construction industry in China. In terms of its production technology, the technique formula of the raw materials for gypsum board is not only the main factors to determine the quality, but also determine the use of equipment related to production technology. In this paper, according to the actual production conditions of Beijing New Building Materials Group Industrial Park in Zhuozhou, water-reducing agent is introduced in its raw materials and specific researches are made about the properties of gypsum when water reducer, foam, coagulant agent and other additives are mixed. The results show that the suitable water-reducing agent used in conjunction with other gypsum admixtures not only improve the quality, but also play an important role in saving energy, improving production efficiency, and reducing production costs.

Author(s):  
Rijk Block ◽  
Barbara Kuit ◽  
Torsten Schröder ◽  
Patrick Teuffel

<p>The structural engineering community has a strong responsibility to contribute to a more efficient use of natural resources. Nowadays the construction industry is by far the most resource intense industry sector, approximately 40-50% of all primary raw materials are used, which raises the question about the architects and engineer’s accountability. In this context and as a result of the Paris Climate agreement the Dutch government defined the program “Nederland Circulair in 2050”, which states the ambition to use 50% less primary materials in 2030 and to have a full circular economy in 2050.</p><p>One possible approach to achieve these ambitious goals is the application of renewable, bio-based materials in the built environment and to replace traditional, typically cement-based, materials. Already in the past natural building materials, such as timber and bamboo have been used widely, but in recent years new materials came up and provide new opportunities to be used in the construction industry. The authors explored various alternatives, such as hemp and flax fibres, mycelium and lignin-based fibres for composite materials, which will be described with various experimental and realised case studies.</p>


Author(s):  
V. Nelyubova ◽  
V. Babaev ◽  
Nataliya Alfimova ◽  
S. Usikov ◽  
O. Masanin

fiber concrete is one of the types of effective building materials that ensure the operational reliability of structures due to a set of unique properties. However, the maximum physicomechanical characteristics of this type of products are achieved only if the fiber is evenly distributed in the concrete matrix and the optimum ratio of raw materials is reached. In this connection, the aim of the work was to increase the production efficiency of fiber-reinforced concrete by optimizing the formulation and technological parameters of its manufacture. The optimal method of introducing the fiber into the concrete mix and the type of superplasticizer were previously determined, which allowed ensuring the maximum physicomechanical characteristics of the products. Optimization of prescription parameters was carried out using the method of mathematical planning of the experiment, where the amount of cement, superplasticizer and basalt fiber were varied. After processing the results, the dependences of the compressive strength on variable factors were obtained, which would allow to select the optimal dosages of raw materials for given mechanical characteristics of the products.


2020 ◽  
Vol 3 (2) ◽  
pp. 32
Author(s):  
Wenxin Luo

<p>For the development and progress direction of contemporary construction industry, greening has always been one of the most important topics, which is basically consistent with China’s guidelines on environmental protection and resource conservation, with emphasis on whether it can effectively improve the ecological environment quality in urban areas, control various hazards caused by pollution, and build a healthy urban environment for people. Nowadays, the building materials market has also developed in an all-round way, and the types of materials for exterior wall insulation are also increasing. Relatively, the practical application difficulty of various technologies in the construction industry also shows an increasing trend. In order to better highlight the important role of insulation materials for green buildings, this paper will explore the application of exterior wall insulation materials with strong energy saving in green buildings.</p>


2013 ◽  
Vol 368-370 ◽  
pp. 1103-1106
Author(s):  
Hai Long Wu ◽  
Bing Zhang Huang ◽  
Bang Biao Huang ◽  
Ji Zhen Zhu ◽  
Xi Qiang Li ◽  
...  

In order to achieve green building materials, energy conservation, waste reuse purposes. Use city sewage sludge as part of the raw materials for production of shale brick is studied by experiments adopted the different mixing ratio, find matching and the relationship between the compressive strength. Experimental results show that the shale powder to add quality percentage is 40% of dry sludge, formed a burning brick, brick of various performance accord with national standards, not only can save coal and mineral resources, improve the heat insulation brick, but also a lot of recycling of utilization of sludge.


2012 ◽  
Vol 193-194 ◽  
pp. 341-344
Author(s):  
Xin Ming Yan ◽  
Da Lu Tan ◽  
Hong Jia

The impact of the construction industry on the consumption of natural resource and environment cannot be ignored. There is no doubt that green building will be a trend in the international construction industry. It is crucial to choose the appropriate green building materials, because it acts as key factor to the development of green building. With the brief introduction of two mainstream assessment tools of green building materials in the world and two main evaluation tools that are used in China as well as their advantages and disadvantages, this article is expected to serve as the reference for development of green building materials and the assessment tools in China.


2021 ◽  
Vol 36 (2) ◽  
pp. 182-191
Author(s):  
Ljiljana Kljajevic ◽  
Miljana Mirkovic ◽  
Sabina Dolenec ◽  
Katarina Ster ◽  
Mustafa Hadzalic ◽  
...  

The potential re-use of red mud in the building and construction industry has been the subject of research of many scientists. The presented research is a contribution to the potential solution of this environmental issue through the synthesis of potential construction materials based on red mud. A promising way of recycling these secondary raw materials is the synthesis of alkali-activated binders or alkali activated materials. Alkali-activated materials or inorganic binders based on red mud are a new class of materials obtained by activation of inorganic precursors mainly constituted by silica, alumina and low content of calcium oxide. Since red mud contains radioactive elements like 226Ra and 232Th, this may be a problem for its further utilization. The content of naturally occurring radionuclides in manufactured material products with potential application in the building and construction industry is important from the standpoint of radiation protection. Gamma radiation of the primordial radionuclides, 40K and members of the uranium and thorium series, increases the external gamma dose rate. However, more and more precedence is being given to limiting the radiological dose originating from building materials on the population these days. The aim of this research was to investigate the possible influence of alkali activation-polymerization processes on the natural radioactivity of alkali activated materials synthesized by red mud (BOKSIT a. d. Milici, Zvornik, Bosnia and Herzegovina) and their structural properties. This research confirmed that during the polymerization process the natural radioactivity was reduced, and that the process of alkali activation of raw materials has an influence on natural radioactivity of synthesized materials.


2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
João de Lassio ◽  
Josué França ◽  
Kárida Espirito Santo ◽  
Assed Haddad

The construction industry is increasingly concerned with improving the social, economic, and environmental indicators of sustainability. More than ever, the growing demand for construction materials reflects increased consumption of raw materials and energy, particularly during the phases of extraction, processing, and transportation of materials. This work aims to help decision-makers and to promote life cycle thinking in the construction industry. For this purpose, the life cycle assessment (LCA) methodology was chosen to analyze the environmental impacts of building materials used in the construction of a residence project in São Gonçalo, Rio de Janeiro, Brazil. The LCA methodology, based on ISO 14040 and ISO 14044 guidelines, is applied with available databases and the SimaPro program. As a result, this work shows that there is a substantial waste of nonrenewable energy, increasing global warming and harm to human health in this type of construction. This study also points out that, for this type of Brazilian construction, ceramic materials account for a high percentage of the mass of a total building and are thus responsible for the majority of environmental impacts.


2016 ◽  
Vol 851 ◽  
pp. 639-642 ◽  
Author(s):  
Zheng Wang ◽  
Feng Han

With our country economy has already came second in the world, urbanization development, but the rapid economic development also brings great hidden trouble, for example, the environmental problems, the population problem, such as water pollution problems. Which is closely related to the construction industry, therefore, make the green building industry, environmental protection and governance environment in China, such as water pollution problem plays an important role. This article is through the introduction to green materials, the classification of the new green building materials to do an overview.


2020 ◽  
Vol 194 ◽  
pp. 05014
Author(s):  
Yudian Li ◽  
Na Li ◽  
Yanjun Shi ◽  
Zhijun Jia

With the rapid development of urbanization in China, people’s requirements for the quality of life and environment are constantly improving. However, the shortage of resources and the deterioration of environment are becoming more and more serious. Environmental protection has become the only way for the sustainable development of society. Therefore, the application of more and more new green building materials has become the key to the sustainable development of the construction industry. In the face of the rapid development of modern construction industry, engineering quality and functional requirements have become the basic requirements, the green environmental protection has become a higher requirement. The application of green environmental protection building materials in engineering construction is the main development direction of the transformation of modern construction industry. At the same time, it conforms to the policy of environmentally sustainable development of all sectors of society, and promotes the construction industry to meet the higher requirements of green environmental protection living environment. This paper studied the performance and waterproof mechanism of a kind of high polymer (HDPE) self-adhered waterproofing membrane and its application in construction. Compared with the traditional waterproofing membrane, the high polymer self-adhered waterproofing membrane can give full play to the advantages of environmental protection on the premise of meeting the building quality.


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