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Use of RECYCLED AGGREGATES In CONCRETE

The table 4 shows that the target cube strength was achieved at 28 days for all types of concrete. As expected, the compressive strength of RAC is lower than the conventional concrete made from similar mix proportions. The reduction in strength of RAC as compare to NAC is in order of 2- 14% and 7.5 to 16% for M-20 & M-25 concretes respectively.

Reducing Energy costs for Plastic Manufacturers

concluded that approximately 50% of total energy consumption in plastics manufacturing is non-productive, confirming the considerable potential for reducing energy consumption and related costs. By embracing energy reduction initiatives, plastic manufacturers can therefore take some control over their own fate.

Concrete for energy

It is crucial to reduce energy consumption in buildings because of the significant role this can play in combating unsustainable levels of energy use. European figures show that the energy used for the heating, lighting and cooling of buildings accounts for over 40% of the primary energy consumed.

Impacts of booming concrete production on water resources

Concrete is the most-used construction material worldwide. Previous studies on the environmental impacts of concrete production have mainly focused on the materials involved and energy consumption ...

Energy Efficiency Improvement and Cost Saving Oportunities

Energy efficiency improvement is an important way to reduce these costs and to increase predictable earnings, especially in times of high energy price volatility. There is a variety of opportunities available at individual plants in the U.S. glass industry to reduce energy consumption in a cost-effective manner.

3 Ways to Reduce Your Energy Consumption

Jul 03, 2019 · To reduce your energy consumption, turn off all lights and electronics when you're not using them. You can also reduce energy consumption by 75% by replacing incandescent lightbulbs with LED bulbs. If you're buying new appliances, look for the Energy Star label to significantly decrease your energy usage.

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Ultrasonication Saves Energy and Costs

High-Shear mixing requires approx. 4.4kWh/m³. This means, that hydrodynamic impulse cavitation requires approx. 23 times more energy and high shear mixing approx. 3 times more energy than Hielscher ultrasonic devices to provide the same throughput. This leads to significantly higher annual electricity costs.

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Concrete Admixtures (Additives)- Types, Selection, Properties

Concrete admixtures (additives) enhances the properties of concrete for applications in construction with special requirements. Concrete additives are used to achieve desired workability in case of low water cement ratio, and to enhance setting time of concrete for long distance transportation of concrete.

Energy Consumption in Production of Concrete

Aug 28, 2017 · The production of 1 m³ of concrete requires 2,775 MJ of energy. This energy comes mostly from oil burning, which generates CO2. 2.775 MJ of energy is produced by 0.37 barrels of oil. Saving concrete, e.g. by adopting appropriate building solutions, means therefore not only reducing fossil fuels consumption, but also pollutant emissions.

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Mixing System: 1. The system uses the simulated and optimized material mixing speed technology. 2. The system ensures that materials in each mixer are homogeneously mixed to increase the mixing efficiency by 25% while reducing energy consumption by 20%. 3.

Quality of Water for Making Concrete: A Review of Literature

strength and also lead to softening of concrete. All the impurities may not have adverse effect on the properties of concrete. The use of impure water for concrete mixing is seen to favorable for strength development at early ages and reduction in long term strength.

Concrete Technologies – Oman Green Ready Mix LLC – الشركة

Our system to cool the coarse aggregate is not only working fully automated but also with low energy input. This will contribute in a CO2 reduction. Compared to other traditional systems of cooling fresh concrete, our system can save up to 40% of energy consumption witch will generate a cost reduction effect and a much lower carbon foot prints.

How to Calculate Quantities of Cement, Sand and Aggregate for

How to Calculate Quantities of Cement, Sand and Aggregate for Nominal Concrete Mix (1:2:4)? Mix design is a process of determining the right quality materials and their relative proportions to prepare concrete of desired properties like workability, strength, setting time and durability.

Concrete Batching, Mixing, Placing and Compaction of Concrete

The mixing time or period should be measured from time all the cementing materials and aggregates are in mixer drum till taking out the concrete. Mixing time depends on the type and size of mixer, on the speed of rotation, and on the quality of blending of ingredients during charging of the mixer.

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Precast Concrete Sustainability

Precast Concrete Sustainability. Sustainability is a watchword in today’s architectural designs and advanced construction materials. It’s often intermingled with terms like green building, energy efficiency and environmental friendliness.

Impact of Hot Cement on the Concrete Mix

The reason for this effect can be traced to the mix proportions and the intrinsic thermal properties of the concrete ingredients. Of the materials added to normal concrete, cement occupies only seven to 15 percent of the concrete volume. Water and aggregates generally constitute approximately 70 to 90 percent of the concrete volume.

Cleaner concrete production could cut air pollution by 14%

Using cleaner-burning kiln reduces the health costs of air pollution from concrete production by 14%, according to a new study published today (March 24) in Nature Climate Change. Concrete production is responsible for 8% of global greenhouse gas emissions, and as populations continue to grow, demand for concrete continues to rise.

"IMPROVEMENTS IN CONCRETE" SERIES

FML Concretec GmbH, based in Herborn, Germany, has developed a unique mixing system for ready-mix, on-site and precast concrete plants. The system utilises the technology of treating water to become finer and energetically modified, thus improving the reactivity of the water.

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The Greenhouse Gas Emission from Portland Cement Concrete

Jun 24, 2016 · Energy use for cement concrete production (including the transportation and mixing of cement, aggregate, water, and admixtures) is considerably less than the energy for the production of the Portland cement . Different to hot mix asphalt, Portland cement concrete mixes need no drying of the aggregates prior to mixing, as the extra moisture can ...

Setting up a Ready-Mix Concrete Manufacturing Plant. Ready

Reduction in cement consumption by 10 –12 % due to better handling and proper mixing. Further reduction is possible if mineral admixtures or cementitious materials are used. Versatility in uses and methods of placing: The mix design of the concrete can be tailor made to suit the placing methods of the contractor.

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YLB Mobile Asphalt Plant

YLB Series mobile asphalt mixing plant is developed, designed, manufactured and put on sale by Liaoyuan Road Construction Machinery. It inherits the advantages of LB series asphalt batch mixing plant, and adds new elements including: containerized size, modular design and trailer and mobile chassis which make it possible for container transportation, fast mobilization and relocation.

Energy and Emission Reduction Opportunities for the Cement

The energy consumed for concrete production is associated mainly with three operations: quarrying fine and course aggregates; mixing and blending cement, aggregates, and admixtures; and transporting the concrete mix to the work site.

Capturing and Recycling CO2 in Ready-Mixed Concrete

May 22, 2018 · Lafarge Canada, CarbonCure Technologies and BLOOM talk about a demonstration project at Lafarge’s Barrie plant to capture waste CO2 emissions and inject it into ready-mixed concrete to reduce ...

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