scholarly journals Nanoscale insight on the durability of magnesium phosphate cement: a molecular dynamics study

RSC Advances ◽  
2020 ◽  
Vol 10 (66) ◽  
pp. 40180-40195
Author(s):  
Yue Li ◽  
Guosheng Zhang ◽  
Dongshuai Hou ◽  
Zigeng Wang
Keyword(s):  
Heavy Metals ◽  
Molecular Dynamics ◽  
Nuclear Waste ◽  
Building Material ◽  
Green Building ◽  
Magnesium Phosphate

The sustainable green building material magnesium phosphate cement (MPC) is widely used in the fields of solidifying heavy metals and nuclear waste and repair and reinforcement.

Effect of Heavy Metals and Leaching Toxicity of Magnesium Potassium Phosphate Cement

2011 ◽  
Vol 117-119 ◽  
pp. 1080-1083 ◽  
Author(s):  
Bao Guo Ma ◽  
Jing Ran Wang ◽  
Xiang Guo Li
Keyword(s):  
Heavy Metals ◽  
Cement Hydration ◽  
Potassium Phosphate ◽  
National Standard ◽  
Magnesium Phosphate ◽  
Toxicity Tests ◽  
Hydration Products ◽  
Obvious Effect ◽  
Leaching Toxicity ◽  
Magnesium Potassium Phosphate Cement

Solidification / stabilization (S/S) is a popular method for treating solid wastes containing heavy metals. In recent years, it shows positive results of magnesium potassium phosphate cement as stabilizing agent. In the work, the influence of heavy metal Cu、Zn and Pb on magnesium phosphate cement and the leaching behavior of magnesium phosphate cement were studied. Two proportions of cements were employed with hard burned magnesia and potassium phosphate. The hydration products were analyzed by XRD showing that: Cu、Zn and Pb would not take on obvious effect during magnesium phosphate cement hydration process. Leaching toxicity tests showed that: Cu、Zn and Pb were immobilized within cement hydration products through physical fixation, adsorption mechanisms, and the results were far lower than that of the National Standard in China.

The Development of Green Building Materials Trend in China

2013 ◽  
Vol 357-360 ◽  
pp. 1070-1073
Author(s):  
Bao Zhu Sheng
Keyword(s):  
Sustainable Development ◽  
Building Material ◽  
Building Materials ◽  
Civil Engineering ◽  
Green Building ◽  
Engineering Construction ◽  
Factors Influencing ◽  
Green Building Materials ◽  
History Of ◽  
Development Tendency

Building material is the base of civil engineering construction, in the history of thousands of years of development, building materials also gradually change and change, and is closely related to the progress of human civilization and the development of science and technology.Green building materials has the vital significance to the construction of a conservation-oriented society and sustainable development, in accordance with China's social development.This paper introduces the importance of the development of green building materials,analyzes some factors influencing the development of green building materials in China,and discusses the development tendency of green building materials in China.

Biocement: Green Building- and Energy-Saving Material

2011 ◽  
Vol 347-353 ◽  
pp. 4051-4054 ◽  
Author(s):  
Jian Chu ◽  
Volodymyr Ivanov ◽  
Viktor Stabnikov ◽  
Jia He ◽  
Bing Li ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Microbial Biomass ◽  
Enzymatic Activity ◽  
Energy Saving ◽  
Building Material ◽  
Clayey Soil ◽  
Raw Materials ◽  
Green Building ◽  
Specific Enzymatic Activity ◽  
Porous Soil

Cement and chemical grouts have often been used for soil strengthening. However, high cost, energy consumption, and harm to environment restrict their applications. Biocement could be a new green building- material and energy-saving material. Biocement is a mixture of enzymes or microbial biomass with inorganic chemicals, which can be produced from cheap raw materials. Supply of biocementing solution to the porous soil or mixing of dry biocement with clayey soil initiate biocementation of soil due to specific enzymatic activity. Different microorganisms and enzymes can be used for production of biocement.

Testing and Green Assessment Technology for Ready-Mixed Concrete

2018 ◽  
Vol 768 ◽  
pp. 306-313 ◽  
Author(s):  
Chun Zhi Zhao ◽  
Yi Liu ◽  
Shi Wei Ren ◽  
Jiang Quan
Keyword(s):  
Quality Control ◽  
Energy Conservation ◽  
Building Material ◽  
Rapid Development ◽  
Green Building ◽  
Process Quality ◽  
Concrete Quality ◽  
Assessment Technology ◽  
Ready Mixed Concrete ◽  
Mixed Concrete

Concrete is the most extensively used material in building and civil project structure. With the rapid development of economic construction, urban construction and infrastructure construction increase year by year, so there is a greater demand for concrete, which brings the rapid development of ready-mixed concrete industry. During the rapid development, structural safety and durability problems caused by concrete quality appear frequently. Meanwhile, to implement the fundamental national policies of resource conservation and environment protection, according to Green Building Action Plan (GUOBANFA [2013] No.1) approved by CPC Central Committee and the State Council, besides meeting the quality requirements, ready-mixed concrete must also meet the green products requirements of "energy conservation, emission reduction, safety, convenience and recyclability" for the vigorous development of green building material and supporting the requirements for building energy conservation, green building and new-type urbanization construction. By quality testing, this paper elaborates the green assessment technology for ready-mixed concrete in combination with raw material quality control, design of mix ratio, production process quality control, construction process quality control, residual concrete treatment, hardened concrete quality control, and control of dust, noise and wastewater. The greening of ready-mixed concrete brings the production and application of green building material, promotes the transformation and upgrading of building material industry and drives the development of green building.

Eco-Efficiency Model for Green Building Material in a Subtropical Climate

2013 ◽  
Vol 30 (9) ◽  
pp. 555-572 ◽  
Author(s):  
Ting-Ting Hsieh ◽  
Kwang-Pang Lai ◽  
Che-Ming Chiang ◽  
Ming-Chin Ho
Keyword(s):  
Building Material ◽  
Green Building ◽  
Subtropical Climate
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