Further, the cost and CO2 emission percentage reductions would be significantly aided by minimizing cement and mineral admixtures and other environmental impacts [1,18]. As cement reduction is one of the essential factors in the construction sector, this might make it more sustainable by providing ...
The cleaner technologies in concrete production, such as substituting relatively high percentage of cement by fly ash (up to 100%), the use of other natural pozzolans, development of concrete with recycling or waste materials, and developing nanoconcrete by integrating CNT's or self sensing CNT'...
Using PLC to construct the University of California, San Diego biomedical research facility resulted in a 160-ton reduction in CO2 emissions, which is equal to the energy emissions from burning 176,298 lbs of coal. The ongoing construction of the Drexel University Academic Tower is using PLC and...
The CO2uptake in different stages of the concrete life cycle was calculated and included in the recently publishedMPA sector EPDs for ready-mixed concrete. The table below gives indicative values, for normal strength C28/35 concrete, of the percentage of the EPD upfront embodied carbon reabsorbed...
Consequently, a detailed analysis was conducted to determine the specific percentage of mass loss and strength loss at 90th day, as shown in Fig. 14. As mentioned above, the investigation revealed that after exposure to sulphuric acid, all the concrete specimens experienced reductions in both ...
The higher the percentage of dolomite added, the greater the increase in compressive strength.However, the addition of 15% dolomite has shown a slight decrease in compressive strength at 7, 14, 28, 56 & 90 days, as compared to 10% dolomite. Therefore, the optimum amount seems to be 10%...
percentage showed a slight variation in CO2emissions (M1-M3 mixes) compared with CC. However, adding NS to concrete alongside MK increases its strength while reducing embodied carbon emissions. As a result of using MK-NS blended concrete, the CO2contribution decreased from 365.87 kgCO2/m3to ...
higher than 0.35 is very scarce, as higher w/b ratios lead to as low compressive strength as 70 MPa. Fig3shows the relationship between the UHPC compressive strength and percentage of FA used in the mix design, with respect to different w/b ratios. The majority of the collected data is ...
The bad rap is primarily because cement, one of the main ingredients of concrete, is so energy and CO2 intensive to produce. Although UHPC starts with a lower percentage of cement in its formulation, the real savings in environmental impact is driven by just needing a lot less of it to ...
Quantitative methods including seven performance indices: Determination Coefficient (R2), Willmott Index (WI), Root Mean Square Error (RMSE), Scatter Index (SI), Mean Absolute Error (MAE), Mean Absolute Percentage Error (MAPE) and Mean Bias Error (MBE). The ideal values for these indices are...