scholarly journals Analysis of slope stability of a segmental concrete block wall and geogrid in Meulaboh–Geumpang road

Author(s):  
H Yunita ◽  
B Chairullah ◽  
R Ambiya
2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Hui Su ◽  
Dongyue Wu ◽  
Mengying Shen ◽  
Wei Chen ◽  
Shilin Wang

To improve the thermal performance of external masonry walls, a new tenon composite block is proposed as the external maintenance component which contains the internal hollow concrete block part, the external block part, and the extruded polystyrene layer fixed by tenons. The production process and concrete material mixing ratio were optimized for the new tenon composite block to promote its application. The mechanical strength and thermal properties of the optimized tenon composite blocks were tested with experiments and numerical simulation in this study. The testing and simulation results indicated that after utilizing the two optimized concrete mixing ratios, the tenon composite block strength matched the strength requirements according to the related design code. The thermal performance of the tenon composite block wall was also good compared with that of a common block wall.


2014 ◽  
Vol 501-504 ◽  
pp. 461-465
Author(s):  
Zhao Yan Cui ◽  
Fu Sheng Liu ◽  
Shun Ke Zhang

With the development of energy-saving in buildings, new energy-saving block masonry with multi-row cores is commonly used. In this paper, from the study of typical bearing capacity of multi hole concrete block masonry of combining multiple rows of holes, holes in the multi block wall masonry capacity test of heat insulation material characteristics. Test results show that, in the process of multi hole masonry brittle failure characteristics, built-in straw block in the insulation at the same time, can improve the compressive strength of masonry; masonry local diffusion mechanism under the action of stress is significant; and offer the engineering measures.


2009 ◽  
Vol 29 (11) ◽  
pp. 1609-1625
Author(s):  
Wael W. El-Dakhakhni ◽  
Steve George ◽  
Marwan T. Shedid

2011 ◽  
Vol 217-218 ◽  
pp. 1438-1443
Author(s):  
Yan Li ◽  
Xin Sheng Yin ◽  
Bo Wang

Aerated concrete is a typical non-uniform quasi-brittle materials, the fracture process is very complicated. To slove the problem of cracks in this block walls, a practical analytical method was proposed based on the vertical mortar joint model to solve the equivalent fracture toughness (the critical value which the crack occurred to spread unstable) With the use of the basic principle of composite material mechanics and linear elastic fracture mechanics. Against the results of the related experiments, the standard deviation and the coefficient of variation of Analytical Solution are smaller, , and the equivalent fracture toughness is the effective fracture parameters of independent of specimen size. So the suggested method is more feasible and applicable, which can forecast autoclaved aerated concrete block wall’s cracking and destroying.


2012 ◽  
Vol 166-169 ◽  
pp. 1639-1643 ◽  
Author(s):  
Yu Qing Zhang ◽  
Yong Ning Mi ◽  
Lu Wang ◽  
Jin Ting Zhao ◽  
Zhen Guo Wang ◽  
...  

Slope protection is to ensure the security of levee foundation engineering. This article take the actual project--the Bird Island Park of Shenyang City hinge joint concrete block slope,as an example, use of FLAC software and strengthen reduction method, calculated by 29°slope angle, 45kg block the effect slope stability factor of safety. In view of the different parameters (slope, block quality, bulk density, cohesion force, internal friction angle), discussion of various parameters on slope stability of safety coefficient, and obtained the best slope and block quality combination, so as to the slope protection design and application reference.


1996 ◽  
Vol 3 (4) ◽  
pp. 217-231
Author(s):  
Robert J.M. Craik ◽  
R. Wilson ◽  
R. Ming

Many defects in the construction of buildings act as transmission paths across which unwanted sound can travel. The resulting increase in power flow can be measured using structural intensity techniques and the location of the source found from the intersection of two or more intensity vectors. This technique can be used to locate a source (or sometimes a sink) when the intensity being measured is above the residual or background intensity. Some applications of this technique are discussed and it is used to locate a point source on a concrete floor and a line source exciting a concrete block wall. The technique was found to work well for a point source but was less reliable for a line source. This was partly because a line source is less well spatially defined and partly because the damping of the wall was low, resulting in a high residual intensity.


2014 ◽  
Vol 59 (3) ◽  
pp. 793-805
Author(s):  
Kyle A. Perry

Abstract Mine seals are necessary in nearly every underground coal mine to isolate mined-out areas from the ventilation network. Many seals are already in place in active mines and more need to be constructed to keep up with the development of underground coal reserves. The accidents involving seal failures at Sago and Darby prompted MSHA to create and implement new regulations regarding the strength of the seals. These regulations require the design and construction of seals that are larger and stronger than ever before. Structural seals capable of withstanding the new required design loads are now designed by an engineer and no longer approved through explosion testing. Prior to the seal failure accidents, a solid-block wall with pressurized grout bags at the wall/ribs and wall/roof interfaces was a popular design which met the 137.9 kPa (20 psi) requirement. After implementation of the new 344.7 kPa (50 psi) or 827.4 kPa (120 psi) design regulations depending on whether the atmosphere is kept inert inby the seal, a re-design of the seal was necessary. This paper discusses the quantification of the coefficients of friction which are then implemented into finite element modeling.


2014 ◽  
Vol 1004-1005 ◽  
pp. 1492-1495
Author(s):  
Li Mei Wang ◽  
Feng Mei Pi ◽  
Ya Jie Yuan

Based on aerated concrete block wall material, design, construction three aspects under effective control, so as to avoid the cracking of the wall and carry out.


2013 ◽  
Vol 353-356 ◽  
pp. 2877-2880
Author(s):  
Ding Tang Wang

The concrete block made of cement, gravel and waste residues is a new type of promotion material, but the problem of cracking existed commonly on the block wall affects seriously its use. This paper analyzes the causes of block wall cracking from the aspects of material, design, constructional measures, construction and management etc., and puts forward some corresponding precaution measures. It helps to limit or /and eliminate the block wall cracking, promote the healthy development of block, and provides valuable references for the similar engineering.


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