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Showing papers in "The World of Building Materials in 2011"


Journal Article
TL;DR: In this paper, the authors described the construction of reinforced concrete structure works, details of the methods commonly used in reinforced concrete structures and technology, and discussed the process of structural reinforcement to note.
Abstract: With Chinese economic development,building renovation has been elevated to the reinforcement of urban construction in a prominent position,in order to meet new functional requirements to use some of the old building in the transformation process needs to take the necessary reinforcement measuresThis paper described the construction of reinforced concrete structure works,details of the methods commonly used in reinforced concrete structures and technology,and discussed the process of structural reinforcement to note

5 citations


Journal Article
Zhou Zi-chen1
TL;DR: In this paper, the most representative three pretreatment methods of phosphogypsum, including irrigation, neutralized by lime and calcination, were compared through comparing the intended requirements of construction materials.
Abstract: Through comparing the most representative three pretreatment methods of phosphogypsum,including irrigation,neutralized by lime and calcination.All the phosphogypsum pretreated via these three methods can meet the intended requirements of construction materials.Neutralized by lime is the most economical and applicable way.

3 citations


Journal Article
TL;DR: In this paper, the influence of desulfurization gypsum on the mechanical performance and hydration processes of the desulfuration of gypsus was investigated through experiment.
Abstract: Through experiment,the influence on the desulfurization gypsum cement mechanical performance and hydration processes was researched.The result shows that adding desulfuration gypsum instead of gypsum to cement can improve and strengthen properties of the cement.So,it can be used instead of natural gypsum to produce cement.

3 citations


Journal Article
TL;DR: In this article, the effect of synthesis temperature on the morphology, growth characteristics and thermal stability of ettringite was studied by XRD,SEM and TG-DSC-DTG technique.
Abstract: The effect of synthesis temperature on the morphology,growth characteristics and thermal stability of ettringite was studied by XRD,SEM and TG-DSC-DTG techniqueThe results indicated that the ettringite synthesized by solution reaction method at the room temperature were thin rod-like with the length of around 2~3 μm and the thickness of 05 μm,whereas those synthesized at 50 ℃ were thin needles-like with the length of around 05~10 μm long and the thickness of 01 μmTemperature affects the microstructure of ettringite,leading to the crystal of ettringite becoming more thickThe temperature promoted the formation of crystal nucleation and crystal growth of ettringite

3 citations


Journal Article
TL;DR: Tin bath is a key part of float glass production line, and the bottom block is the important structural material of its normal operation as discussed by the authors.These problems caused by the block are closely related to its chemical composition and fabrication process, so this paper expounds its developing history and application.
Abstract: Tin bath is a key part of float glass production line,and the bottom block is the important structural material of its normal operation.These problems caused by the block are closely related to its chemical composition and fabrication process,so this paper expounds its developing history and application.

2 citations


Journal Article
TL;DR: In this paper, the characteristics of hydration and setting of alkali-activated slag cement and the main factors influencing the fast setting were analyzed. And the basic principle of slag cements is discussed.
Abstract: The characteristics of hydration and setting of alkali-activated slag cement and the main factors influencing the fast setting were analysed.The basic principle of alkali-activated slag cement is discussed.Anions and cations are introduced to alkali-activated slag cement,which,under the charge repulsion,can delay the movement speed of Ca2+ or reduce the electrostatic attraction of 4-,thereby preventing the formation of C-S-H gel,delay the polymerization of 4-to achieve the effect of retardation.

2 citations


Journal Article
TL;DR: In this paper, the influence of a kind of warm mix asphalt additive on flame retardancy property and physical properties of SBS modified asphalt were studied using dynamic shear rheometer(DSR) test.
Abstract: The influence of a kind of warm mix asphalt additive on flame retardancy property and physical properties of SBS modified asphalt were studied.The effects of the warm mix asphalt additive on rheological properties of SBS modified asphalt were also studied using dynamic shear rheometer(DSR) test.The variation of the softening point,penetration,ductility of asphalt binder indicated that the addition of warm mix asphalt additive can reduce the temperature sensitivity and improve the high temperature stability of SBS asphalt binder.The results of limit oxygen index showed that the flame retardancy property of SBS asphalt binder was improved when the warm mix asphalt additive had been added.Furthermore,the results of temperature sweeps by DSR on SBS asphalt and that modified by 6% warm mix asphalt additive revealed that the rutting resistance and fatigue property of SBS asphalt were also improved when the warm mix asphalt additive had been added.

1 citations


Journal Article
TL;DR: In this article, the authors combine their own work experience for the detection and reinforcement of building structures has been studied and discussed,hoping to provide a useful reference for later identification and reinforcement theory and engineering,to improve the quality of the project construction reinforcement.
Abstract: This paper combines his own work experience for the detection and reinforcement of building structures has been studied and discussed,hoping to provide a useful reference for later identification and reinforcement theory and engineering,to improve the quality of the project construction reinforcement.

1 citations


Journal Article
TL;DR: In this paper, the joint form of the steel-concrete composite segment of the precast hybrid girder is analyzed and compared, and the force calculation and analysis are carried out.
Abstract: The main bridge of JingYue Yangtze river bridge is a asymmetric hybrid girder cable-stayed bridge with a main span 816 m.The steel-concrete composite segment of the girder is composed of the steel box room packing concrete structure with part connected.In this paper,joint form of the steel-concrete composite segment is analysed and compared.It was analyzed and researched the proper detailed structure of steel-concrete composite segment(for example,the bearing plate,the shear connector,shear connector and prestress distribution).Finally,through the force calculation and analysis,verify the safety of the precast hybrid girder.

1 citations


Journal Article
TL;DR: According to the principle of polarized light, polarization device can be classified into: reflective, dual-refraction type, second to color type and scattering type as mentioned in this paper, mainly introduced the preparation, application and the exist problems of polarizing glass.
Abstract: With the rapid development of photoelectron technology and communications business,the polarizing material of excellent optical properties,good stability and well processability is urgently demandedAccording to the principle of polarized light,polarization device can be classified into: reflective,dual-refraction type,second to color type and scattering typeThis paper mainly introduced the preparation,application and the exist problems of polarizing glass

1 citations


Journal Article
TL;DR: In this paper, a test road was paved as bottom layer in the Yi-yang highway reconstruction, and the experiment results showed that the test road had good stability, splitting tensile strength and compressive modulus.
Abstract: Performances of cement emulsified asphalt concrete were tested in the lab such as Marshall stability,splitting tensile strength and compressive modulus.Based on the experiment results,construction mix ratio was identified and a test road was paved as bottom layer in the Yi-yang highway reconstruction.

Journal Article
TL;DR: In this paper, the authors introduce the development and achievements in the domestic and international of phase change materials thermal properties test method, focusing on the comparison and analysis of differential scanning calorimeter(DSC), the T-history measurement and the Calorimeter measurement.
Abstract: At present there is no unified standard about the test method of the phase change materials(PCM) thermal physical properties,resulting in difficulties in the field of research and application.This paper introduces the development and achievements in the domestic and international of PCM thermal properties test method,focuses on the comparison and analysis of differential scanning calorimeter(DSC),the T-history measurement and the calorimeter measurement.The test principle and the advantages and disadvantages of each method are discussed.This article lays a foundation for test method of PCM for the future study.

Journal Article
TL;DR: BOQ is the international project bidding method, is a scientific management model biddingIt can adapt to the objective law of market economy,accelerate project bidding price in the market,promote the formation of the market price mechanism,so that the full project bidding prices competition is more reasonable.
Abstract: BOQ is the international project bidding method,is a scientific management model biddingIt can adapt to the objective law of market economy,accelerate project bidding price in the market,promote the formation of the market price mechanism,so that the full project bidding price competition is more reasonable

Journal Article
TL;DR: In this article, a structural damage method with strain frequency response function (COMACsfrf) as damage detection parameter was presented, which can be applied to location of structural damages as well as identification of damage severity.
Abstract: To study bridge structural damage and damage detection index,a structural damage method with strain frequency response function(COMACsfrf) as damage detection parameter was presented.In the simulation example,a simple-supported plane is damaged by decreasing several elements bending stiffness on predefined location.The results show that the COMACsfrfis sensitive to damage than the methods,such as modal shape and modal strain.The presented method can be applied to location of structural damages as well as identification of damage severity.

Journal Article
TL;DR: In this article, the authors present a method which can detect the rock compaction of earth on-line through the improved stiffness model, based on the current domestic and foreign technology of compaction testing,obviously improves the accuracy and effectiveness of the analysis of the compaction test results.
Abstract: In order to meet the growing requirements for the quality of Highway construction projects,the original method of quality testing must be improved and developed.This paper presents a method which can detect the rock compaction of earth on-line through the improved stiffness model.This method bases on the current domestic and foreign technology of compaction testing,obviously improves the accuracy and effectiveness of the analysis of the compaction test results,through the capabilities of real-time display and real-time communication of the compaction testing instruments.

Journal Article
TL;DR: Based on the relationship of hole depth, loaded length, bottom burden,blast hole diameter and stemming length, the calculation expression of stemming length were analyzed and the optimal stemming length was deduced as mentioned in this paper.
Abstract: Blast hole stemming is the important links in blasting,its length has the direct impact on the quality of blasting.Based on the relationships of hole depth,loaded length,bottom burden,blast hole diameter and stemming length,the calculation expression of stemming length were analyzed and the the optimal stemming length was deduced.The blasting experiment which took gravel(rock powder) as stemming materials with optimal stemming length was carried out and the experimental results showed the quality of blasting was very good.

Journal Article
TL;DR: In this article, the basic situation of flat glass industry in the 11th five year plan, and the production capacity distribution of flatglass lines and pull factors constraints of the flat glass market increase during the 12th five years plan were analyzed.
Abstract: This paper concludes basic situation of flat glass industry in the 11th Five Year Plan,analyzes production capacity distribution of flat glass lines and pull factors constraints of flat glass market increase during the 12th Five Year Plan,and forecasts the demand of flat glass market at the preliminary stage of the 12th Five Year Plan.

Journal Article
TL;DR: In this article, the fire resistance tests for the non-loadbearing vertical separating elements used the rock wool materials as a main base material,protected by different materials and structure type.
Abstract: Rock wool because of its thermal insulation,fire resistance,sound absorption characteristics,and the advantages as environment-friendly,economical and practical,is more and more increasingly widely used in industrial and construction field.This paper through the fire resistance tests for the non-loadbearing vertical separating elements used the rock wool materials as a main base material,protected by different materials and structure type.Then this paper concluded the major factors which effect the fire resistance performance of the rock wool material elements base on the analyze data,and gave some advises to improve the fire resistance performance of these elements.

Journal Article
TL;DR: In this article, the in-plane and out-of-plane motion of cable-stayed beam structure through the d'Alembert's principle was studied. But the authors focused on the non-linear partial differential equations describing the coupling motion.
Abstract: This paper was devoted to the non-linear partial differential equations describing in-plane and out-of-plane motion of cable-stayed beam structure through the d'Alembert's principle.Taking the interaction between cable and beam at the tied tip as the natural boundary condition,Electing the low-lying modes of cables and beam,The Galerkin's method was adopted to obtain ordinary differential equations of the coupling motion in cable-stayed beam.Numerical analysis shows that the cables can bring in-plane and out-of-plane parametric oscillation of cable-stayed beam structure under the influence of support movement,and the beam can only bring in-plane parametric oscillation.

Journal Article
TL;DR: In this article, the authors made a detailed scientific cost analysis and cost control measures in view of this project, and done a detailed analysis of its loss point,pointed out its problems.
Abstract: This article was in the background of a large overpass bridge,and it detailed the tied arch form of the bridge.It made a detailed scientific cost analysis and cost control measures in view of this project,and done a detailed analysis of its loss point,pointed out its problems.