On the Application of Anti-Seismic & Waste-Recyclable Foamed Concrete Cast-in-Place Wall in Architecture

2013 ◽  
Vol 671-674 ◽  
pp. 1524-1527
Author(s):  
Hui Fen Hu
Keyword(s):  
Production Process ◽  
Building Materials ◽  
Low Intensity ◽  
Industry Standards ◽  
Foamed Concrete

Characterized by the strengths of earthquake proof and waste utilizing, the foamed concrete cast-in-place wall, one of the newest building materials, have been widely used in the architectures within the earthquake-prone areas. This paper conducts research into the problems of the foamed concrete cast-in-place wall during its application such as defective industry standards, low intensity, poor producing condition, etc. Then it analyzes countermeasures that could be taken to promote the development of the foamed concrete cast-in-place wall including completing relevant systems, improving intensity by altering additives, perfecting production process and improving production equipments, etc.

scholarly journals Relation between Density and Compressive Strength of Foamed Concrete

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2967
Author(s):  
Rokiah Othman ◽  
Ramadhansyah Putra Jaya ◽  
Khairunisa Muthusamy ◽  
MohdArif Sulaiman ◽  
Youventharan Duraisamy ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Building Materials ◽  
Bleaching Earth ◽  
Concrete Specimen ◽  
Control Specimen ◽  
Dilution Ratio ◽  
Sustainable Building ◽  
Cement Ratio ◽  
Foamed Concrete ◽  
Partial Cement Replacement

This study aims to obtain the relationship between density and compressive strength of foamed concrete. Foamed concrete is a preferred building material due to the low density of its concrete. In foamed concrete, the compressive strength reduces with decreasing density. Generally, a denser foamed concrete produces higher compressive strength and lower volume of voids. In the present study, the tests were carried out in stages in order to investigate the effect of sand–cement ratio, water to cement ratio, foam dosage, and dilution ratio on workability, density, and compressive strength of the control foamed concrete specimen. Next, the test obtained the optimum content of processed spent bleaching earth (PSBE) as partial cement replacement in the foamed concrete. Based on the experimental results, the use of 1:1.5 cement to sand ratio for the mortar mix specified the best performance for density, workability, and 28-day compressive strength. Increasing the sand to cement ratio increased the density and compressive strength of the mortar specimen. In addition, in the production of control foamed concrete, increasing the foam dosage reduced the density and compressive strength of the control specimen. Similarly with the dilution ratio, the compressive strength of the control foamed concrete decreased with an increasing dilution ratio. The employment of PSBE significantly influenced the density and compressive strength of the foamed concrete. An increase in the percentage of PSBE reduced the density of the foamed concrete. The compressive strength of the foamed concrete that incorporated PSBE increased with increasing PSBE content up to 30% PSBE. In conclusion, the compressive strength of foamed concrete depends on its density. It was revealed that the use of 30% PSBE as a replacement for cement meets the desired density of 1600 kg/m3, with stability and consistency in workability, and it increases the compressive strength dramatically from 10 to 23 MPa as compared to the control specimen. Thus, it demonstrated that the positive effect of incorporation of PSBE in foamed concrete is linked to the pozzolanic effect whereby more calcium silicate hydrate (CSH) produces denser foamed concrete, which leads to higher strength, and it is less pore connected. In addition, the regression analysis shows strong correlation between density and compressive strength of the foamed concrete due to the R2 being closer to one. Thus, production of foamed concrete incorporating 30% PSBE might have potential for sustainable building materials.

scholarly journals Thermal Properties of Foamed Concrete with Addition of Empty Fruit Bunch (EFB) Fiber

2019 ◽  
Vol 8 (10) ◽  
pp. 4662-4670 ◽  
Keyword(s):  
Thermal Properties ◽  
Construction Industry ◽  
Building Materials ◽  
Natural Fiber ◽  
Construction Materials ◽  
Cost Effective ◽  
Fiber Reinforced Concrete ◽  
Empty Fruit Bunch ◽  
Construction Sector ◽  
Foamed Concrete

The key players in the construction industry around the globe are very enthusiastic in producing better construction materials that are cost-effective, durable, excellent thermal insulation, lightweight and long lasting without jeopardizing the environment. One of the best ways in producing such building materials are by incorporating industrial waste materials such as Empty Fruit Bunch (EFB) fiber in foamed concrete (FC). In recent years, the spotlight has been given towards the use of natural fiber reinforced concrete-based materials especially in Malaysia in a quest of economic and environmental upkeep particularly in the construction sector itself. Hence, this study intended to recognize the influence of Empty Fruit Bunch (EFB) fiber of four different contents (0.15%, 0.30%, 0.45% and 0.60 %) by mix volume on thermal properties of FC. There were three densities of 800kg/m3 , 1100kg/m3 and 1400kg/m3 we cast and tested. The mix design of FC (sand: cement: water) is fixed at the ratio of 1:1.5:0.45. The investigation focuses on three parameters which were thermal conductivity, thermal diffusivity and specific heat capacity. Results showed that the addition of EFB in FC plays an important role to improve the thermal performance holistically. The results demonstrated a great potential possesses by the EFB fiber to be utilized in cement-based materials such as the FC mix which is beneficial in reducing the thermal property or the transfer of heat in a produced concrete.

scholarly journals Low Intensity Microwave Fields and Radiation and Their Interaction with the Human Body

2022 ◽  
Vol 3 (2) ◽  
Author(s):  
Oleksiy Yanenko ◽  
Kostiantyn Shevchenko ◽  
Sergiy Peregudov ◽  
Vladyslav Malanchuk
Keyword(s):  
Human Body ◽  
Electromagnetic Compatibility ◽  
Building Materials ◽  
Soft Tissues ◽  
Human Organism ◽  
Formation Mechanisms ◽  
Intensity Level ◽  
Microwave Range ◽  
Low Intensity ◽  
Microwave Signals

Sources of low-intensity microwave signals formation, which affect the metabolism processes when they interact with human body, are considered in the article. It’s noticed that increasing intensity level of the technogenic signals in environment significantly exceeds natural electromagnetic fields and radiation (EMR). The peculiarities of the registration and measurement of low-intensity signals parameters of the microwave range are considered. The processes of the interaction of the microwave signals and human organism are analyzed. Formation mechanisms of the positive and negative microwave flows of the electromagnetic radiation are revealed. Particularly, possible formation mechanism of the microwave EMR fluxes of implants in the human body. The results of the experimental study of the EMR signals levels of the objects contacting with human body, partly materials for bone defects replacement and soft tissues regeneration so as materials for physiotherapy, are given. The use of the term “electromagnetic compatibility” for materials which contacting the human body, is proposed. The expediency of its use is proven. Microwave properties of materials for clothes, minerals and building materials, which can affect the human body and environment, have been also studied.

scholarly journals ALUMINOSILICATE MICROSPHERE PRODUCTION

2019 ◽  
pp. 134-139
Author(s):  
V. V. Shekhovtsov ◽  
O. G. Volokitin ◽  
R. E. Gafarov ◽  
M. A. Semenovykh
Keyword(s):  
Production Process ◽  
Energy Efficient ◽  
Building Materials ◽  
Plasma Jet ◽  
Physical Processes ◽  
High Quality ◽  
Plasma Energy ◽  
Optimum Parameters ◽  
New Energy ◽  
Gas Control

The development of new energy-efficient methods in the production of building materials is always important. One of such materials is microspheres which can be obtained by plasma energy. A study of physical processes during the formation of microsphere density determines the optimum parameters for the production of high-quality building materials. The article is devoted to production process of microspheres based on aluminosilicates. The plasma jet modes and their effect on the morphology of generated microspheres are investigated. It is shown that microspheres with different morphology can be produced by using a plasma gas control.  

Study on Development and Technology of Low-Carbon Building in Japan

2012 ◽  
Vol 193-194 ◽  
pp. 248-257
Author(s):  
Jian Qiang Bao ◽  
Li Li Zhang ◽  
Yang Miao
Keyword(s):  
Energy Consumption ◽  
Building Materials ◽  
Greenhouse Gas Emission ◽  
Technological Development ◽  
High Energy ◽  
Low Carbon ◽  
Government Department ◽  
Industry Standards ◽  
Concept Building ◽  
Whole Life Cycle

Abstract: In the context of the global response to climate change, the construction industry with high energy consumption and high greenhouse gas emission is getting more and more attention. This paper reviews the background of low-carbon building, and studies the characteristics and trends of the low-carbon building and technological development in Japan. It analyses the low-carbon concept which applies to the building’s whole life cycle from low-carbon design concept, building constructions, building materials applications, the use of new energy resources, to the control of energy consumption and carbon emissions in Japan. Finally, considering the characteristics of the new deal about low-carbon building in Japan, this paper puts forward countermeasures and suggestions about governments and markets, industry standards, energy-saving and emission reduction, incentive and restraint mechanisms, etc. This article argues that the active behavior of government department is major factor to promote Japan’s Low-carbon building development .It expected to sum up the experience of the summarize trough Japan's the low carbon building for our government department to formulate policies and measure targeted in the low carbon architecture field.

scholarly journals EXPLORING GREEN FEATURES THAT MAKE BUILDING MATERIALS GREEN

2021 ◽  
Author(s):  
P Rathnayake ◽  
◽  
D. Soorige ◽  
S.D.I.A. Amarasinghe ◽  
P. Dissanayake ◽  
...  
Keyword(s):  
Production Process ◽  
Construction Industry ◽  
Environmental Impacts ◽  
Building Materials ◽  
Pollution Prevention ◽  
Green Building ◽  
Embodied Energy ◽  
Research Approach ◽  
Study Results ◽  
Green Building Materials

The construction industry plays a significant role in the economic growth of a country. Nevertheless, the construction industry has created severe adverse environmental impacts. Therefore, green building technologies are implemented to alleviate the adverse effects of the construction industry. Using green materials instead of conventional building materials with high environmental impacts has been identified as one such implementation. However, there seems to be much confusion in defining green building materials. Hence, it is vital to explore the features of green building materials. Therefore, this article investigates green features that qualify the building materials as green building materials. A qualitative research approach was selected as the research methodology, and semi-structured interviews were conducted with seven green building experts. The data was analysed using content analysis. Findings revealed that recycled content, local availability of materials, embodied energy of materials, use of rapidly renewable material, usage of waste material for the production process, material wastage content in the production process and pollution prevention in the production process are the green features. The study results guide the identification of green building materials that can replace the materials with poor environmental sustainability.

scholarly journals A Study of Sandwich Reinforced Concrete – Foamed Concrete Floor Slabs

2021 ◽  
Vol 1203 (3) ◽  
pp. 032038
Author(s):  
Justyna Sobczak-Piąstka ◽  
Oksana Lytvyniak ◽  
Andrii Kramarchuk ◽  
Borys Ilnytskyy ◽  
Yuriy Famulyak
Keyword(s):  
Reinforced Concrete ◽  
Experimental Determination ◽  
Building Materials ◽  
Functional Performance ◽  
High Heat ◽  
Concrete Floor ◽  
Floor Slabs ◽  
Foamed Concrete ◽  
Insulating Properties

Abstract The development of housing construction demands an application of building materials which ensure necessary functional performance of structures, have high heat-insulating properties, are environmentally friendly and their use is economically appropriate. Simultaneous ensuring of mentioned indices is possible because of complex combined joining of building materials with different physical-mechanical properties. This article presents experimental determination of useful load for sandwich reinforced concrete – foamed concrete floor slabs. Sandwich reinforced concrete – foamed concrete floor slabs are the floor slabs which are composed of normal concrete, non-autoclaved foamed concrete and spatial reinforcement frame. Experimental determination of useful load was carried out on series that compose of four sandwich reinforced concrete – foamed concrete floor slabs. Experimental test of sandwich reinforced concrete – foamed concrete floor slabs was carried out under condition of pure bending that was achieved by applying to floor slab in one third of its span two concentrated forces equal in magnitude. Useful load for sandwich reinforced concrete – foamed concrete floor slabs was 33.23÷77.87 kN/m2. Sandwich reinforced concrete – foamed concrete floor slabs are proposed to be used in construction of housing and social structures.

Sign in / Sign up

Export Citation Format

Share Document