Periclase-spinel-forsterite concrete blocks for the slag belt of the walls of soaking pits

The relevance of research in the factory laboratory of JSC «198 KZHI», which is part of the HC GVSU «Center», is dictated by the need to dispose of foam polystyrene waste that occurs in large quantities when producing the precast concrete. In the production of three-layer external wall panels, polystyrene heatinsulating plates of the PPS 17-R-A brand are used as an effective insulation material. The secondary use of PPS 17-R-A for its intended purpose, as a heater, is not possible. The volume of foam polystyrene produced varies from 25 to 45 m3 per month. Utilization (disposal) of foam polystyrene waste is an expensive undertaking. Its use as a filler in the production of expanded polystyrene blocks was tested in the factory’s laboratory to produce foam polystyrene concrete with specified physical and mechanical characteristics. The results of testing of expanded polystyrene concrete of classes B2.5 and B 7.5 are presented. It is shown that under the conditions of the reinforced concrete factory technology, the production of polystyrene concrete blocks is possible with the achievement of the design strength. The information presented in the article is aimed at motivating specialists who produce recast concrete to the possibility of using foam polystyrene waste for low-rise construction. Keywords: foam polystyrene, ecology, energy efficiency, foam polystyrene concrete, foam polystyrene heat insulation plates, precast concrete.

The Development Of Society Businesses In Concrete Blocks Production With A Single Vibration System In The Pare Sub-District Kediri Regency

JASTEN (Jurnal Aplikasi Sains Teknologi Nasional) ◽

10.36040/jasten.v1i1.3088 ◽

2020 ◽

Vol 1 (1) ◽

pp. 19-23

Author(s):

Diah Willis L ◽

Thomas Priyasmanu ◽

Wahyu Panji A ◽

D. H. Praswanto ◽

E. Y. Setyawan

Keyword(s):

Community Service ◽

Production Cost ◽

Building Construction ◽

Vibration System ◽

Current Development ◽

Drying Process ◽

Long Time ◽

Concrete Blocks ◽

Good Potential ◽

Main Components

Development in the current development sector has grown rapidly, in this development we can see a good potential to be developed, namely the development of bricks with good quality compared to using red bricks which production takes a long time. Batako is an alternative that can be used in the construction of a building, because currently the price of red brick is quite high because the production cost is quite expensive. Besides, the price of firewood used for cooking red brick is getting difficult. Meanwhile, the demand for brick gradually increased because brick was one of the main components in building construction. So it needs to be developed in making brick blocks because the time is relatively short in the drying process. Therefore the community service team made a brick making machine with a vibration system for compaction and a faster production process in brick making using a machine that has been made, so that it can increase partner income, who previously produced 120 pieces with a manual system using a machine that could produce 500 pieces of brick per day.

A microwave system for measuring moisture of hollow concrete blocks

Sensors and Actuators A Physical ◽

10.1016/j.sna.2021.112657 ◽

2021 ◽

Vol 323 ◽

pp. 112657

Author(s):

Juan Rafael Filgueira Guerra ◽

Antonio Luiz Pereira de Siqueira Campos ◽

Humberto Dionísio de Andrade

Keyword(s):

Microwave System ◽

Concrete Blocks

The Influence of Lime Solution in Kneading Water Substitution on Cement Roughcast and Mortar Coating

Materials ◽

10.3390/ma14154174 ◽

2021 ◽

Vol 14 (15) ◽

pp. 4174

Author(s):

André M. Santos ◽

Ângelo J. Costa e Silva ◽

João M. F. Mota ◽

João M. P. Q. Delgado ◽

Fernando A. N. Silva ◽

...

Keyword(s):

Bond Strength ◽

Concrete Block ◽

Tensile Bond Strength ◽

Water Penetration ◽

Strength Tests ◽

Lime Solution ◽

Concrete Blocks ◽

Materials Used ◽

Bonding Systems ◽

Direct Tensile

The understanding of the mechanical fixation behavior of coatings is crucial for a better comprehension of the bonding systems, especially at the interface between the mortar and the substrate. Physical adherence is related, among other things, to the contents of the materials used in the roughcast and mortar coatings, due to the colloidal water penetration into the pores of the substrate. This work evaluated the influence of different lime solution additions replacing the kneading water in the preparation of roughcast and mortar coatings. Two types of substrates were investigated:ceramic bricks and concrete blocks. Three wall masonry panels were constructed, with dimensions of 220 × 180 cm2, one of concrete block and two of ceramic bricks, followed by the application of roughcast and mortar coating with an average thickness of 5 mm and 20 mm, respectively. Direct tensile bond strength tests were performed and the results, with a 95% confidence level, showed that substrate ceramic and treatment in the roughcast exhibited a better behavior regarding the distribution of the tensile bond strength of the tested specimens. However, no significant differences of the amount of addition used (0%, 5%, 10% and 15%) on the tensile bond strength were observed.

Thermal Inertia Characterization of Multilayer Lightweight Walls: Numerical Analysis and Experimental Validation

Applied Sciences ◽

10.3390/app11115008 ◽

2021 ◽

Vol 11 (11) ◽

pp. 5008

Author(s):

Juan José del Coz-Díaz ◽

Felipe Pedro Álvarez-Rabanal ◽

Mar Alonso-Martínez ◽

Juan Enrique Martínez-Martínez

Keyword(s):

Lightweight Concrete ◽

Thermal Flux ◽

Experimental Studies ◽

Thermal Inertia ◽

Transient State ◽

Experimental Tests ◽

Building Design ◽

Experimental Methodology ◽

Improve Energy Efficiency ◽

Concrete Blocks

The thermal inertia properties of construction elements have gained a great deal of importance in building design over the last few years. Many investigations have shown that this is the key factor to improve energy efficiency and obtain optimal comfort conditions in buildings. However, experimental tests are expensive and time consuming and the development of new products requires shorter analysis times. In this sense, the goal of this research is to analyze the thermal behavior of a wall made up of lightweight concrete blocks covered with layers of insulating materials in steady- and transient-state conditions. For this, numerical and experimental studies were done, taking outdoor temperature and relative humidity as a function of time into account. Furthermore, multi-criteria optimization based on the design of the experimental methodology is used to minimize errors in thermal material properties and to understand the main parameters that influence the numerical simulation of thermal inertia. Numerical Finite Element Models (FEM) will take conduction, convection and radiation phenomena in the recesses of lightweight concrete blocks into account, as well as the film conditions established in the UNE-EN ISO 6946 standard. Finally, the numerical ISO-13786 standard and the experimental results are compared in terms of wall thermal transmittance, thermal flux, and temperature evolution, as well as the dynamic thermal inertia parameters, showing a good agreement in some cases, allowing builders, architects, and engineers to develop new construction elements in a short time with the new proposed methodology.

Compressive behaviors of cylindrical concrete specimens made of demolished concrete blocks and fresh concrete

Construction and Building Materials ◽

10.1016/j.conbuildmat.2013.11.071 ◽

2014 ◽

Vol 53 ◽

pp. 118-130 ◽

Cited By ~ 37

Author(s):

Bo Wu ◽

Chunhui Liu ◽

Yaopeng Wu

Keyword(s):

Fresh Concrete ◽

Concrete Blocks

River Soil & Sand Solidified Blocks as Ballast in Beach Protection

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.779-780.323 ◽

2013 ◽

Vol 779-780 ◽

pp. 323-326 ◽

Cited By ~ 2

Author(s):

Jing Min Mao ◽

Da Feng Gao

Keyword(s):

Yangtze River ◽

Setting Time ◽

Experimental Studies ◽

Curing Agent ◽

The Yangtze River ◽

Environment Protection ◽

Time Stability ◽

Alternative Materials ◽

Concrete Blocks ◽

Protection Engineering

This paper deals with the feasibility of beach protection project alternative materials - the Yangtze River soil and sand, applies PCSB curing agent to solidify it and to produce beach protection blocks. Experimental studies on the performance of strength, setting time, stability and anti-erosion have been carried out to inquire into the regularity of solidification. Using soil and sand curing blocks instead of concrete blocks in the application of Yangtze River beach protection engineering has advantages of technology, economy and environment protection etc.

Faster drying of dinas ? Concrete blocks

Refractories ◽

10.1007/bf01286313 ◽

1974 ◽

Vol 15 (1-2) ◽

pp. 84-85

Author(s):

I. P. Tsibin ◽

R. S. Kalugin ◽

E. M. Grishpun ◽

Z. K. Zhuravleva ◽

M. Z. Naginskii

Keyword(s):

Concrete Blocks

Study on behaviors of wave-dissipating concrete blocks of submerged breakwater around the Fukui Port using GPS

PROCEEDINGS OF COASTAL ENGINEERING JSCE ◽

10.2208/proce1989.55.966 ◽

2008 ◽

Vol 55 ◽

pp. 966-969

Author(s):

Hiroshi YOSHINAGA ◽

Yoshiyuki OOSHITA ◽

Tadashi WATANABE ◽

Yasutaka TAKAMOTO ◽

Takemitsu TAKANO

Keyword(s):

Submerged Breakwater ◽

Concrete Blocks

Discussion: Size effect on compressive behaviours of normal-strength concrete cubes made from demolished concrete blocks and fresh concrete

Magazine of Concrete Research ◽

10.1680/macr.14.00311 ◽

2015 ◽

Vol 67 (8) ◽

pp. 430-432 ◽

Cited By ~ 4

Author(s):

Chunhui Liu ◽

Bo Wu ◽

Yong Yang ◽

Jose R. Martí-Vargas

Keyword(s):

Size Effect ◽

Fresh Concrete ◽

Normal Strength Concrete ◽

Strength Concrete ◽

Concrete Blocks ◽

Normal Strength