Additive Construction with Mobile Emplacement: Multifaceted Planetary Construction Materials Development

The study of building form is complicated and multifaceted, of which,tectonic approach has been becoming one of the important research directions.Simultaneously, the development of construction materials is also representedthrough diversified and rich architecture form. The paper focuses on how building materials affect architecture form and ultimately is reflected in our academic design and daily life, how the development of construction materials in the history and at present influences the tectonic form, and whether it is feasible to introduce the element of construction materials into architectural appraisal.

Download Full-text

Progress in Eco and Resilient Construction Materials Development

Solutions to Climate Change Challenges in the Built Environment ◽

10.1002/9781444354539.ch12 ◽

2012 ◽

pp. 141-151 ◽

Cited By ~ 1

Author(s):

Jamal M. Khatib

Keyword(s):

Construction Materials ◽

Materials Development

Download Full-text

CHANNEL DEFORMATIONS FORECAST AND FEATURES OF FLOODPLAIN QUARRIES OF NON-METALLIC CONSTRUCTION MATERIALS DEVELOPMENT IN MEANDERING RIVERBEDS BASED ON SAFE NAVIGATION CONDITIONS (ON THE EXAMPLE OF THE BELAYA RIVER)

Russian Journal of Water Transport ◽

10.37890/jwt.vi65.138 ◽

2020 ◽

pp. 179-188

Author(s):

Aleksandr N. Sitnov ◽

Yulia E. Voronina ◽

Marina V. Shestova

Keyword(s):

Construction Materials ◽

State Assessment ◽

Channel State ◽

Channel Deformations ◽

Materials Development ◽

Minimal Impact ◽

Safety Issues ◽

Safe Navigation ◽

Sand And Gravel ◽

Navigation Safety

Floodplain quarries of non-metallic construction materials (NCM) have a minimal impact on the water regime and navigable conditions of the reservoir in the area of their location. However, the development of such deposits has its own characteristics, especially in case of their location in meandering beds of large navigable rivers. On the example of floodplain quarry located at the mouth of the Belaya river (1757-1763 km), development conditions for such facilities based on ensuring navigation safety were considered; on the basis of changes’ dynamics in the bends’ main parameters the channel state assessment and fluvial deformations forecast were made. It was concluded that it is possible to extract sand and gravel in the studied section of the Belaya river, provided that navigation safety issues are resolved in a comprehensive manner. First of all, it refers to meander straightening and transferring the ship's course to a new capital slot.

Download Full-text

Challenges of preserving modernist concrete

MATEC Web of Conferences ◽

10.1051/matecconf/201928907003 ◽

2019 ◽

Vol 289 ◽

pp. 07003

Author(s):

Ann Harrer ◽

Paul Gaudette

Keyword(s):

Environmental Factors ◽

Service Life ◽

Concrete Structures ◽

Construction Materials ◽

Concrete Case ◽

Materials Development ◽

Biological Studies ◽

La Jolla ◽

Rehabilitation Strategy ◽

Over Time

Exposed architectural concrete is often a defining characteristic of modernist structures. Concrete, like other construction materials, eventually deteriorates over time and with exposure to environmental factors. With any historic structure, challenges exist in the development of an appropriately sensitive rehabilitation strategy to address existing distress, including structural repairs, use of compatible materials, development of repair procedures without unnecessary removal of historic material, and sustainable practices, as well as to meet the requirements of governing standards or jurisdictions. It is important to understand the structure’s construction, including material constituents of the concrete, unique characteristics, and extent and causes of deterioration, as well as project requirements and goals. Following a condition assessment, the rehabilitation strategy can be developed, taking into account the sensitive nature of the structure. Appropriateness and compatibility of repairs, together with technical soundness, are key to the success of the repair design. In addition, poor or incomplete repairs will have a minimal service life and can result in additional distress or other problems with the structure. This paper will describe challenges encountered in the preservation of modern concrete structures, focusing on architectural concrete. Case studies of several iconic modernist concrete structures, including the Salk Institute for Biological Studies in La Jolla, California, for which the authors have developed that highlight approaches to address these challenges.

Download Full-text

Corrosion monitoring and root cause identification in high solids concentrators

TAPPI Journal ◽

10.32964/tj15.7.467 ◽

2016 ◽

Vol 15 (7) ◽

pp. 467-477

Author(s):

PASI NIEMELAINEN ◽

MARTTI PULLIAINEN ◽

JARMO KAHALA ◽

SAMPO LUUKKAINEN

Keyword(s):

Paper Industry ◽

Black Liquor ◽

Construction Materials ◽

Open Circuit ◽

Process Conditions ◽

Potential Range ◽

Corrosion Monitoring ◽

General Corrosion ◽

High Solids ◽

Passive Area

Black liquor high solids (about 80%) concentrators have often been found to suffer from aggressive corrosion. In particular, the first and second effect bodies are susceptible to corrosion attacks resulting in tube leaks and wall thinning, which limit the availability and lifetime of evaporator lines. Corrosion dynamics and construction materials have been studied extensively within the pulp and paper industry to understand the corrosion process. However, it has been challenging to identify root causes for corrosion, which has limited proactive measures to minimize corrosion damage. Corrosion of the first phase concentrator was studied by defining the potential regions for passive area, stress corrosion cracking, pitting corrosion, and general corrosion. This was achieved by using a technique called polarization scan that reveals ranges for the passive area in which the equipment is naturally protected against corrosion. The open circuit potential, also known as corrosion potential, and linear polarization resistance of the metal were monitored online, which allowed for definition of corrosion risks for stainless steel 304L and duplex stainless steels 2205 and SAF 2906. An online temperature measurement added insight to the analysis. A process diagnostics tool was used to identify root causes of the corrosion attacks. Many of the root causes were related to process conditions triggering corrosion. Once the metal surface was activated, it was difficult to repassivate the metal naturally unless a sufficient potential range was reached.

Download Full-text

Housing Inflation: Policy Guidelines from Shariah Perspective

The Journal of Muamalat and Islamic Finance Research ◽

10.33102/jmifr.v16i1.209 ◽

2019 ◽

Vol 16 (1) ◽

pp. 70-81

Author(s):

Azrul Azlan Iskandar Mirza ◽

Asmaddy Haris ◽

Ainulashikin Marzuki ◽

Ummi Salwa Ahmad Bustamam ◽

Hamdi Hakiem Mudasir ◽

...

Keyword(s):

Content Analysis ◽

Housing Prices ◽

Construction Materials ◽

Housing Price ◽

Developed Countries ◽

Control Element ◽

Recent Issue ◽

Analysis Methodology ◽

The Government ◽

Developing And Developed Countries

The soaring housing prices in Malaysia is not a recent issue. It is a global phenomenon especially in developing and developed countries, driven by factors including land price, location, construction materials cost, demand, and speculation. This issue demands immediate attention as it affects the younger generation, most of whom could not afford to buy their own house. The government has taken many initiatives and introduced regulations to ensure that housing prices are within the affordable range. This article aims to introduce a housing price control element from the Shariah perspective, as an alternative solution for all parties involved in this issue. It adopts content analysis methodology on policy from Shariah approved sources.

Download Full-text

CREDO RADON UA – INFORMATION MODEL FOR CALCULATION OF ROAD CONSTRACTION

Avtoshliakhovyk Ukrayiny ◽

10.33868/0365-8392-2019-3-259-34-42 ◽

2019 ◽

pp. 34-42

Author(s):

Volodymyr Karedin ◽

Nadiya Pavlenko

Keyword(s):

Design Process ◽

Static Loading ◽

Computer Aided Design ◽

Experimental Studies ◽

Construction Materials ◽

Residual Deformation ◽

Road Construction ◽

Information Support ◽

Existing Structures ◽

Road Pavement

CREDO RADON UA software provides an automated calculation of the strength of the pavement structures of non-rigid and rigid types, as well as the calculation of the strengthening of existing structures. In the article, one can see the main features and functionality of the CREDO RADON UA software, the main points in the calculations according to the new regulations. Information support of the design process includes necessary databases, informational and helping materials that make up the full support of the pavement design process. The concept of CREDO RADON UA 1.0 software is made on the use of elasticity theory methods in calculations of initial information models of pavements. Performing optimization calculations, the roadwear in CREDO RADON UA is designed in such a way that no unacceptable residual deformation occurs under the influence of short-term dynamic or static loading in the working layer of the earth bed and in the structural layers during the lifetime of the structure. The calculation algorithms were made in accordance with the current regulatory documents of Ukraine. CREDO RADON UA software allows user to create information bases on road construction materials and vehicles as part of the traffic flow for calculations. The presented system of automated modeling makes it easier for the customer to control the quality of design solutions, to reasonably assign designs to layers of reinforcement, to quickly make comparisons of calculations of different designs for the optimal use of allocated funds. Prospects for further improvement of the program should be the results of theoretical and experimental studies on filling the databases, which are used as information support for automated design of road structures. Keywords: CREDO RADON UA, road, computer-aided design, repair project, road pavement, strengthening, construction, rigid pavement, elasticity module, a transport stream, calculation method, information support, dynamic or static loading.

Download Full-text