Sublime Systems’ Post

Sustaining long lifetime of tertiary air duct lining with HASLE D59A In 2013, a prominent Asian cement plant, boasting a capacity of 8,000 TPD, faced a persistent challenge: extreme abrasion in their Tertiary Air Duct (TAD), particularly on the Cooler side. Their existing castable lining had a mere lifespan of 10-12 months, which in addition also required frequent repairs during every shutdown. The plant, with a remarkable run factor of 0.95-0.98, primarily relies on a fuel blend of Coal (65-70%) and RDF (Refuse-Derived Fuel, 30-35%). Our experts engaged in discussions with the plant and recommended a trial with HASLE D59A. This very dense low cement castable combines the best refractory properties from several natural high-alumina raw materials, including andalusite and mullitized bauxitic clay. With high mechanical strength, good shock resistance and excellent abrasion resistance it proved ideal for the TAD application. The cement plant set out for an initial trial covering 50 sqm on the TAD's roof (Cooler side). The results were astonishing, with a lining lifetime of 36 months, a substantial improvement over their prior struggles. From 2016 onwards, our client continued to embrace HASLE D59A, consistently enjoying an impressive lifespan of 30-36 months. The latest installation in October 2021 is no different. Here, the plant decided to replace the TAD lining, covering a substantial 70 sqm on the Cooler Side. In our most recent inspection in October 2023, the results were clear: the lining remained in excellent condition, even after 24 months of service life, and continues to be in operation. At HASLE Refractories, we're dedicated to transforming challenges into success stories. If you're facing refractory issues in your operations, reach out to our team of experts at hasle@hasle-refractories.com. Let us help you achieve high lining durability and efficiency in your processes.🌟 #RefractorySolutions #CementIndustry #SustainableOperations

ASTM C150 applies only to portland cement. Rapid Set® isn’t portland cement. Therefore, you can’t write a specification for concrete made with Rapid Set® cement using ASTM C150. You can, however, use ASTM C1600. Here’s how. https://loom.ly/MRt39Rs #rapidset

Application of FOSM and Chebyshev’s Theorem Concept to Predict Compressive Strength Attributes of Corncob Ash Embedded Cement Concrete by B S K Keerthi Gowda; M S Dakshayini In the present study the physical and mechanical properties of Corn Cob Ash (CCA) embedded cement concrete of mix proportions 1:1.6:2.6 and water-cement ratios of 0.45 were examined and compared with conventional cement concrete. A total of 96 concrete cubes of size 150 × 150 × 150 mm³ with different percentages by volume of CCA to ordinary Portland cement of grade 30Mpa in the order 0:100, 5:95, 10:90 and 15:85 were cast, tested and their physical and mechanical properties were determined. The specific gravity of the CCA was 3.15. The cubes were cured in a laboratory setup and compressive strength measures of 7, 14, 21, 28, 35, 42 and 56 days were observed. The compressive strength tests on cement concrete by replacing cement with 5% of CCA showed quite satisfactory results at 28days, 35days, 42days and 56days curing period compared to conventional concrete. But 15% CCA replacing for cement did not meet the satisfactory strength attributes. The probability analysis for compressive strength attributes were studied and presented. Chebyshev’s theorem was utilised to find how spread the data is from mean. First order second moment method was used to found mean compressive strength and standard deviations. As the CCA replacement level increased, the compressive strength and workability decreased. However the concrete cubes have gained strength with age. The results indicate that CCA is an adoptable mineral admixture and pozzolan with the substitution level of 5% cement, with no unfavourable consequences for other different attributes of the hardened cement concrete. #Workability #Pozzolana #Watercement #ratios #Standard #deviations #CivilEngineering #ArchitecturalEngineering https://lnkd.in/etadG-AC

Cement Testing Cement, in its many forms, is one of the most widely used materials in the built environment. Since Roman times, mixtures of pozzolan and non-hydraulic lime have been used to produce hydraulic cement. Modern hydraulic cements began to be developed around the Industrial Revolution (approximately 1700). Currently, cements come in various formulations, including 'Ordinary' Portland cement, white cement, rapid hardening cement, sulfate-resisting cement and masonry cement. They can also come as blends, including Portland blast-furnace cement incorporating ground granulated blast furnace slag (GGBS) and Portland fly-ash cement incorporating fly-ash. Sandberg offers a comprehensive range of cement testing, encompassing both physical and chemical testing, utilising BS, EN and ASTM methods. More about Cement Testing: https://lnkd.in/dZNq_iCi #cement #cementtesting #testing #concrete #concretetesting

Recently, I’ve been conducting Mix Design testing for Boral’s Roadbase products. Mix designs are used to determine the correct amount of cement additive to use in our CTB (Cement Treated Base) to meet our clients needs. This is achieved by adding varying amounts of cement to a roadbase product, and compacting the material to a specified MDD (Maximum Dry Density) and OMC (Optimum Moisture Content) then conducting a compressive strength test after 7 and 28 Days. The correlation of Cement and Strength (MPa) will tell us how much cement is required for the mix. This is very important, as it not only allows us to reduce cost on Cement, it also reduces the cost on the environment and minimises risk when making decisions on how much cement is required for a particular job/project. #Boral #Buildingsomethinggreat #Boralconstructionmaterials #CMT

Self-leveling cement is often accompanied by the generation of foam during the construction process, which will not only affect the construction effect, but may also reduce the quality of the material. To solve this problem, we added powder defoamer, hoping to create a more ideal working environment in self-leveling through its special chemical composition. Experimental results show that self-leveling cement with the addition of powder defoamer significantly reduces the generation of foam during the construction process. This not only makes construction smoother, but also improves construction efficiency. At the same time, we noticed that in the cement self-leveling with the addition of powder defoamer, the flatness and smoothness of the surface were significantly better than the control group without addition. Further analysis found that the addition of powder defoamer not only inhibits the generation of foam, but also helps adjust the fluidity of self-leveling cement, making it easier to spread and level. This means that in actual construction, cement self-leveling using powder defoamer can better adapt to the needs of different scenarios and provide higher-quality construction results. #PowderDefoamer #DefaomingPowder #SelfLeveling #BuildingMaterial #ChemicalAdditives #BuildingAdditives #RDP #Cement #Construction #zovae

Types Of Cement Commonly Used: Gray Ordinary Portland Cement #physicalcommodities #cement #concrete #construction #highquality

Cement Testing Cement, in one of its many forms, is one of the most widely used materials in the built environment. Dating back to Roman times, mixtures of pozzolan and non-hydraulic lime have been used to produce hydraulic cement material. Modern hydraulic cements began to be developed around the time of the Industrial Revolution (around 1700). Nowadays, cements come in a wide variety of formulations, including 'Ordinary' Portland cement, white cement, rapid hardening cement, sulfate-resisting cement and masonry cement. They can also come as blends to include Portland blast-furnace cement incorporating ground granulated blast furnace slag (GGBS) as well as Portland fly-ash cement incorporating fly-ash. Sandberg offers a comprehensive range of cement testing encompassing both physical and chemical cement testing utilising BS, EN and ASTM methods. More about Cement Testing: https://lnkd.in/dZNq_iCi #cement #cementtesting #testing #concrete #concretetesting

Ultra-high-performance-concrete (UHPC) is generally defined as concrete with a compressive strength greater than 150 MPa. UHPC typically is made with high-strength steel fibers, fine sand, cement, fly ash, a large volume of SF, and a low amount of water (a w/cm ratio less than 0.20).

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