Building Materials - Science topic

How can an energy independent home be built?

How can a zero-energy (energy-neutral) house be built?

How can a zero-emission and energy- and climate-neutral house be built?

What combination of energy efficient building technologies and renewable energy sources should be used to build a fully energy independent home?

What are the key priors for sustainable, environmentally friendly construction?

Various solutions are being used in the construction industry to reduce energy consumption and CO2 emissions into the atmosphere. New building materials are being used, as well as insulation materials for facades to reduce heat loss. Various renewable and emission-free energy sources are used (windmills, photovoltaic panels, others). Thermal (in winter) and/or cooling (during hot weather) energy-generating devices based on heat pumps, air conditioners, etc. are used.

What are currently known to be the most convenient, sustainable, energy-efficient and cost-effective combinations of applied energy-efficient building technologies and various, especially renewable/zero-emission energy sources in fully energy-independent houses?

What do you think about this topic?

What is your opinion on this subject?

Please reply,

I invite you all to discuss,

Thank you very much,

Thank you,

Greetings,

Dariusz

Post everything you know about ferrock and ferrock concrete

I am looking for publications - papers and books on the carbon footprint of materials (especially building materials), including those that discuss the procedure for determining the carbon footprint value by using examples. Can you recommend something or share your own publication on this topic?

Thank you in advance!

J.J.S.

The survey is anonymous, and takes about 10 minutes to complete. The accent is on the usage of building materials and products, before and during the pandemic. Besides, an interesting part is about the readiness to implement new ecological materials in your homes. The survey does not require much of specific knowledge.

Please, follow the safe link https://surveyhero.com/c/euyap4fn

The survey is anonymous, and takes about 10 minutes to complete. The accent is on the usage of building materials and products, before and during the pandemic. Besides, an interesting part is about the readiness to implement new ecological materials in your homes. The survey does not require much of specific knowledge. Please, follow the safe link https://surveyhero.com/c/euyap4fn

Exploring a suitable research topic for MSc. (ENV) research. Linking environmental engineering with construction.

I am working on earth-based material reinforced with cellulose fibre for building applications. The results of the thermal conductivity have been found between the range of 0.350 and 0.695 W/(m.K). However, I can found in the literature the standard range for thermal insulation material for building application. I will really appreciate your help.

I found two articles with options for quantification of amorphous C-S-H:

• Bergold, S. T., Goetz-Neunhoeffer, F., & Neubauer, J. (2013). Quantitative analysis of C–S–H in hydrating alite pastes by in-situ XRD. Cement and Concrete Research, 53, 119-126.

I would like to insert the article data (lattice parameter, space group and all the “hkl”, d and °2θ information for each reflection) as a model pseudo-structure, but I only found the option to insert the structure with lattice and space group parameters, as we do in PONKCS (Partial Or No Known Crystal Structure). The software also needs this reflection information, since I don't have C-S-H to run ... Is it possible to create a ".cif"?

• Suh, J. I., Yum, W. S., Jeong, Y., Park, H. G., & Oh, J. E. (2019). The cation-dependent effects of formate salt additives on the strength and microstructure of CaO-activated fly ash binders. Construction and Building Materials, 194, 92-101.

The authors used the XRD pattern of fully hydrated β-C2S as a reference pattern after the reflections of portlandite were removed. I managed to find the original article (Mohan, K. and Taylor, H.F.W. (1981). J. Am. Ceram. Soc. 64, 717), but I couldn't understand how they generated this pattern for consideration in the XRD software.

if i want to classify opc, ppc using there hyperspectral data and deeplearning how should i do it.

please tell name of any pretrained network that can help via transfer learining.

_{^{Insulation materials come from different sources. Each material has advantages and disadvantages that must be considered when selecting insulation for buildings. What would you recommend other than the commonly used materials?}}

please give any information about the Conference on Building Materials or Sustainable Materials

We are trying to choose between simultaneous DSC/TGA's from Neztsch (Jupiter F5) and Setaram (Labsys). They both offer very similar systems. Seteram does have an advantage in heat capacity where they can use a 3-dimensional cell, but I do not know if that will be relevant to us. If it makes a difference, we will be using it primarily for Gypsum and perhaps other building materials and/or paints and coatings.

Could someone provide an unbiased opinion if they have noticed differences in the instrument sensitivity, software, service, or some other area of Nezstch versus Setaram?

I need references articles that explain the drawings for the following materials, which illustrate the diagram between DR UV-Vis spectrums of the following materials blank sample as expressed in Kubleka-Munk function versus

the measured wavelength and the materials are ZnO, CuO, Fe2O3, and Co3O4.

Hi there :) I made a model in Sketch up with Open Studio plug in and Energy Plus. The model is a student dormitory (residential building) with 60 thermal zones. It has internal loads (people, equipment, lights etc), also all the building materials are added in the envelope (walls, roof, slabs, windows etc). The weather file is from Skopje (epw file). I am still working on the HVAC :)

I made a simulation in EP (finally with no severe errors :)..To see the results, I used xESO Viewer and there were only one graphic about the dew point outside temperature. The were no graphics for the other output:Variable data (the other graphics are just a straight line).

I am sending the idf.file of the model, eSO file results and screen shoots from the xESO graphics.

Could somebody please help me with this issue and explain about how to visualize the graphics in xESO Viewer. I don't know what l am doing wrong? Maybe I am missing some input commands?!

Any kind of answer will be highly appreciated!

Thank you very much in advance...

Looking forward to hearing from you,

Kind regards,

Liljana

I am planning to build a website " ALL ABOUT CIVIL ENGINEERING " which aims to help students as well as engineers, my goal is to have a website wherein all the material regarding civil engineering is available on this website, who would like to be part of this website by providing me help to build this website, it will be totally educational website focusing on students and engineers, initially planned to keep search tab, providing my youtube links as free lectures,  providing previous years question papers of various universities, IS codes and other countries codes pertaining to civil engineering, Q & A forum to ask questions related to civil engineering by logging in, separate tab for all notes of all subjects and practicals, and also separate section for the articles related to the advances in civil engineering. These are the initial requirements i have planned.

I am specifically interested in any software that can effectively be used to finalize design decisions during the preliminary phase of architectural projects.

scientific researches

Master Theses

PhD

Any previous studies benefit me in my research ... Thank you

I am researching about construction and demolition waste then I really need a comprehensive calculation tool or software for estimating the embodied energy in building materials and construction waste.

looking for some helpful sources that have studied/researched the shear analogy approach in wood material/products

I am looking for a PHD dissertation Topic in field of Life Cycle Assessment Of Buildings / Sustainable building materials

Kindly Suggest Me Some Ideas

Thanks

According to the previous studies [1-3], an increase in the S/C ratio within the range of 0.5 to nearly 2.25 results in a gradual increase in the compressive/flexural strength while the S/C ratio higher than 2.25 can reduce the compressive/flexural strength of the cement mortar. My mix-design consists of general-purpose cement, silica fume, superplasticizer, viscosity modifying agent, and washed high purity silica sand with a maximum particle size of 600 µm and fineness modulus of 1.29. all the proportion including the water/cement =0.35 kept constant except the S/C which changed from 0.8 to 1.0 and 17% reduction observed in compressive strength.

Moreover, the addition of Sand resulted in a lower density and all the compressive and flexural strength were measured after 28 days of curing.

Can this phenomenon be explained by the fineness modulus (particle size distribution) and/or changes in the porosity of the mixes?

1-

2- https://link-springer-com.ezp.lib.unimelb.edu.au/content/pdf/10.1007%2Fs12613-011-0429-6.pdf

3-https://link-springer-com.ezp.lib.unimelb.edu.au/content/pdf/10.1007%2Fs11595-017-1607-9.pdf

Why are concrete and red-brick buildings cyan in infrared false color (IRFC) images?

Most building materials are made of soil (e.g. red tile roofs or concrete), thus most urban areas have the spectral signature of a soil.

Nevertheless, in IRFC satellite images we usually see bright urban areas in Bright Cyan instead of Dark Brown/LightBrown to Orange or Whitish. why is that?

The most used fibers for ECC are PVA and PE, however, these fibers are very expensive. Are there other cheaper and greener materials that can be used as fiber in ECC?

They say the following can optimise the free MgO having the culprit periclase ,free lime(CaO, CaOH) which result in delayed solidification or setting and expansion and lead to surface cracks of roads if used for bitumen and land filling for laying roads, cracks in walls if used in aggrgates as building materials and bricks in walls.

1.acclerated steam injection process can accelerate ageing of LD slag along with

2.crushing to a size whereby you modify the elongation and flaking index to eliminate the needle like as well as porous micro structure

Then comes the P2O5 and sulphur which cause rust if used in reinforced structures which is to be controlled.

How can all this be done? Can i be given a reference to some papers which can combine all this knowledge to comprehend and get the conceptual clarity , so as to proceed with commercialising the LD slag available in abundance in my place

What is the best technology for recovering waste from building materials, especially deconstructed concrete waste and sludge?

Like mortar or concrete? I can not find case studies or articles about this topic?

Sustainable Public Procurement compliance versus very scarce resources in government service delivery. A typical example would be a Durban community in need of 500 houses and the South African government do have money to build them. However, in order to comply with SPP the government must adopt and use "green houses" approach which is, in most cases uses very expensive building material. Therefore, the government must choose to build "normal" 500 houses OR build only "green" 70 houses. Will the community understand why must they get 70 houses while the money is enough to build 500 houses. Maybe, the well developed economies would survive the SPP compliance. What is your take on this ?

📷

Its no new research that several studies have explored the use of alkali activated materials and geopolymer as a sustainable replacement to the conventional ordinary Portland cement. However, the sustainability of these materials is relative as it depends mainly on the availability of materials locally which eliminates the huge emission and cost associated with the transportation of both the raw materials and finished products. Therefore, the use of OPC might still be sustainable in some parts of the world compared to alkali activated materials and geopolymers

What is the main advantage of concrete over other building materials?

I want to separate the individual elements from a sample. Simply without chemicals. The sample includes:

Nepheline 34.5%. Alumina/Aluminium Oxide 14.4%. Anatase, syn TiO2 12.9% and Quarts. It is in powder form. As you can see there are some valuable elements, too good the use as building material.

I require the method to be scalable to industrial scale. Simple and cost effective.

One of the apparatus required for freeze and thaw test according to ASTM C666 is the dynamic testing apparatus. This apparatus is used to obtain the relative dynamic modulus of elasticity and durability factor of the concrete.

However, in case where the apparatus is not available, what other apparatus or parameter can be used ?

Few studies have used UPV as an alternative, but i'm still seeking for alternative methods.

Thanks

The use of supplementary cementitious materials (SCMs) is increasing rapidly as they can be used to partially or totally replace OPC in concrete.

The most common types of SCMs are fly ash, slag, metakaolin and silica fume. However, the supply of some of these SCMs will be limited in coming years.

What are the other types of emerging SCMs that can be used in concrete?

Thermal insulation as polystyrene extruded

Let say our common building material for example bricks made of sand, clay and cement, so I want to know how much energy absorbed of bricks and how the retention time of the energy absorbed? 

I am wondering if there is any literature review or any other types of information about the consumption of different materials, e.g. cement, concrete, and steel in the construction of different building types, i.e. residential and non-residential, especially in Australia. I also would like to know if there is any literature review about the embodied energy of the different materials, and the impacts of the consumption of the different materials on energy consumption and Co2 and GHG emission the building operation phases? As you know, building materials have somehow lots of things to do with building efficiency during the operation phases by affecting cooling, heating, ventilation, and even lightning, hence have lots of things to do with Co2 and GHG emission, and have an essential role to be considered in any mitigation action plans.

.

I used a frame structure to represent a continuous shell plate and this frame structure was calibrated with a physical model in order to  have the same rigidity as the real one. However I was trying to identify how representative would if a change the thick of the frame elements to represent a shell plate.

Thank you in advance.

To the hardened cement paste, how much water it can absorb after drying at 80 degree for more than 1 week at the water to cement ratio 0.44?

1)We made building on Google sketchup

2)We then imported it on Trnsbuild where we defined all properties eg ventilation,infiltration,building material .

3)Now we want that trnsys calculate building cooling & heating load for whole year for us.

4)Moreover how trnsys come to know when our heating season start and when our cooling season start .

We are attaching the images of our simulation results.when we run simulation on clicking on heat load calculation,simulation run but we get nothing.

How weather conditions (air temperature, humidity, solar radiation, precipitation, etc) affect the construction materials (concrete, steel, wood)?

please give the details for experimental set up....

Hydrostatic forces act to push at walls that are either buried or bermed. Can superadobe withstand the lateral forces at work in a bermed building, or will it need more lateral support such as buttresses etc.

The stones should be Belgium stones

The aim is to follow the evolution of the attenuation coefficient vs. mortar age.

The experiments will be done using the Ultrasound Pulse Echo Method with P-waves and by Immersion testing (using imersion transducers)

Would be most interested in regulatory standards regarding both materials and skills, but also interested in wider regulation issues.

How can buildings materials efficiently be classified other than via Raman spectroscopy?

Earth is one of the oldest and most widely used building materials worldwide. Do you know of any reliable studies on the maximum density and bearing capacity of rammed earth (tapial) technique?

I am specially interested in informatinos about Peru.

Our group design fiber rolls rack. Safety that must be taken to when handle the fiber rolls? 

There is currently increased focus on using timber as the primary building material for construction. Design firms are now creating feasibility studies for timber high-rise buildings.

Due to the specific structural requirements and wind loading/bracing, does timber limit the flexibility of design for buildings?

Is anybody aware of any resource that offers some advice/figures on measured vs. calculated building fabric U-Values?

Its for a multi-objective situation.

I search for bibiliographic or other ( research studies, scientific papers to gather information about mechanical, thermal and physical properties of classic building and insulating materials. Any referencing hint would be helpful.

Where could I find data of production cost and energy consumption of building materials and raw materials extraction processing for building materials manufacture?

Currently there seem to be no standard that covers how to carry out an accelerated corrosion test for steel in a reinforced cementatious composite. However, several studies have explored different ways by passing electrical charges through concrete samples soaked in sodium chloride solution

What is the best way to have an accelerated quantitative assessment of corrosion of steel in concrete? Any suggestions, papers or standards if available will be greatly appreciated

if there is so then it may be good alternative material to electric Wires.

Non destructive tests equipment for concrete are quite expensive and not readily available. Is there any non destructive test that can be improvised or built with commonly available materials to determine the strength or/and permeability properties of concrete and other cementitious composites?

It is logical to assume development of seaweed as a biomaterial will allow it be used as building construction materials in the near future?

Engineered cementatious composites are high performance composite and are gaining huge research recently due to their enhanced ductility and durability.

What are the major ways to improve the sustainability of the ECC?

Due to the diversity of building materials, there are many equations for calculating the crack spacing and crack width of reinforced concrete members, in which some empirical parameters are used. These structural members are a combination of the following materials:

CONCRETE: normal concrete (NC), ultra-high performance concrete (UHPC), fibre-reinforced cocnrete (FRC), lightweight aggregate concrete (LAC), geopolymer concrete (GPC).

REINFORCEMENT: steel, fibre-reinforced polymer (carbon, aramid, basalt, glass), textile-reinforcement.

I would like to know whether there is a general formula for determining the crack spacing of reinforced concrete members? If not, could you give me the "best" equations of crack spacing according to your opinion and experience.

I am also very happy if you can share me literature regarding experimental results of crack spacing and crack width of reinforced concrete members.

Thank you,

Best regards,

Ngoc Linh Tran

I will like to know why there is always high shrinkage when slag is used at larger percentage replacement of cement.

The reasons in terms of its chemical reactions with OPC and the physical and chemical properties of the slag itself will be greatly appreciated

Wish you success.

Answer the question

The use of polythene bags in packaging is a major cause of pollution. These bags cause environmental problems if they are not properly disposed of. One method to get rid of them is to recycle them and the other method is to use them as a binder in building materials like in sand bricks or as a stabilizer in pavements. Has anyone ventured into this and what kind of properties was obtained both physical and mechanical?

I want to publish an article on the development of impermeable concretes

we have collected two categories of data as follows :

1-life cycle assessment (kg co2) for 30 different building materials

2- annual energy consumption of the building due to use of these materials

I want to make pareto front for these data and my question is

there is no definite mathematical relation between the tow categories how can the materials be ranked based on the lowest life cycle and the lowest annual energy consumption ?

Infrared thermography has been used for different aspects of building diagnostics to help with performance evaluation. I have read recently about the use of infrared thermography to determine other materials properties such as u-value especially for existing building. is this an effective and accurate process?

The volume and mass of the market for reclaimed building materials has been dropping in the UK, and I think many European countries, since the early 1990s

Please note that high temperatures should not affect the fibers and make them brittle. Also, based on our knowledge, the glass fibers which are used in cementitious fireproofing materials must be resistant to alkaline environment.

Dear colleague,

How to calculate the lateral stress exercise in the walls of the oedometer apparatus during a compression test in the field of non-linear behavior ?

Please let me offer methematical formul, or any experimental technique !

Everyone is talking about this new material - graphene, and its amazing mechanical properties. At this time, however, I can't find any research on it as for a building material. It seems to me that graphene would be great for the strengthening of existing structures, for example, given its light weight and high strenght.

Is there a particular reason why it is not yet considered as a potential building material?

Looking for a list of lab experiments that can be carried out to find the stiffness of fine recycled aggregate concrete to find out the cause of their self-cementing properties.

I would appreciate it if anyone can help me to get the values of the inertia resistance and viscous resistance for air flow through fiberglass on mineral wool used in thermal insulation.

I m doing research in this topic so i couldnt get solution above question if any one can help i ll be grateful

I am trying to run a simulation of local residential buildings. Most building's material properties are found in ASHRAE. Can you let me know where to find the values of solar absorptance, thermal absorptance and visible absorptance for different materials used in building construction such as walls, roof, windows , etc...?

There are a vast of literature conducted on the impacts of building materials, architectural elements, e.g. shading components, silhouette, courtyard, along with the orientation and volume characteristics on energy consumption. I would like to know your opinions about the effect of the spatial structure and its physical characteristics e.g. size, number of floors, number of rooms, density, and spatial proportion on the energy consumption in a house, especially the mutual interrelationships between the spatial structure and end-users' energy consumption choice behaviours and environmental perceptions. I am also looking for the literature on this research area.

I'm creating a Pb analysis station at my job, but I have no experience in it. I'm mostly concerned with what to dissolve the samples in, but ANY other information would be amazingly appreciated!!

I am looking for literature reviews conducted on the contribution of residential buildings during their total life cycle, i.e. material production and transportation, feasibility assessments, design  and planning, construction, operation, and demolition phases for Co2 and GHG mitigation. I would like to know about the previous studies conducted in different countries, or if there is any cross comparison studies comparing the various research works from different countries. I am also interested in knowing if there is any literature review on the effect of housing structure and settings, end-users' perceptions and behaviors, or experiences about passive housing. I am also interested in expanding my knowledge about the barriers detracting the practical approach to the mitigation in residential sector.

I'm interested in practical experiences with the use any other alternative binders except cement.