Improved geopolymerization of bottom ash by incorporating fly ash and using waste gypsum as additive. Author links open overlay panel Kornkanok Boonserm a, Vanchai Sata a, Kedsarin Pimraksa b, Prinya Chindaprasirt a. Show more. Add to Mendeley. ... FA is a good pozzolan and is widely used to replace Portland cement to …
It can be used to create strong and durable cement-based mortars, plasters, and other building materials. Gypsum powder also has fire-resistant properties, which makes it ideal for insulation applications. Additionally, gypsum powder can be used as an additive in concrete mixtures to increase strength and reduce cracking. Plasterboard
2.1 Test Matrix. Five total mix designs are considered for this study including one control batch, two batches that involve fine gypsum as a partial replacement for cement in different amounts (20 and 10%), and two batches that involve the whole gypsum as partial replacements for 10 and 20% of cement in the concrete.
Why is gypsum added to concrete? Gypsum's function in cement. Gypsum is a key component in regulating how quickly cement hardens. During the final grinding stage of the cement-making process, …
Cement additives are materials added to cement for the optimization of the cement properties and the cement grinding process. Cement additives are classified into different product groups such as grinding aids, strength enhancers and performance enhancers. ... Additives for Dry Mortar & Gypsum. Cement Industry. Concrete Repair. Corporate …
Gypsum, from either nature or industrial by-products, can be a lower-cost and cleaner alternative binder to Portland cement used in construction projects, such as …
To obtain these desirable properties the application of several numbers of chemical admixtures and mineral additives in gypsum were found necessary. ... Characteristics of acrylic latex-modified and partially …
The strength of cement-soil mixing piles with gypsum is larger than that without gypsum in soft ground treatment. In order to explain this phenomenon, a series of micro-experimental studies on ...
6.4 Influence of gypsum additive on the strength of compacted lime–fly ash mixtures. Influence of additives like gypsum on the strength and strength gain rate of compacted lime–fly ash mixtures was examined. Gypsum content was varied between 0.5 and 10% for a range of lime contents (3.5%, 10.5%, 17.5% and 26.25%).
Popp et al. (2021) revealed that mixing gypsum with additives like lime and cement could reduce the leaching of impurities from gypsum in the soil to safe levels …
In China, a small amount of FGDG is used as cement additives or for gypsum boards, but there still exist a mass of FGDG due to the lack of reusing methods. Also, the waste fly ash (WFA) is another ...
Rapid setting cement or gypsum as well as modern gypsum board mills can present a problem. ... ML 11 is a modified non-ionic, water soluble cellulose ether, intended as a water retaining and consistency improving additive to cement based mortars. Bermocoll® ML 11 contains methyl, ethyl and hydroxyethyl substituents giving a unique balance ...
A ternary geopolymer was designed by adding desulfurized gypsum (DG) to FA-GGBS geopolymer. Gels and ettringite-induced filling were responsible for …
Flue gas desulfurization (FGD) gypsum was evaluated as a setting time retarder to replace the natural gypsum in the production of Portland cement (CP II E-32).
Download scientific diagram | -Particle size distribution of FGD gypsum. from publication: Technical feasibility for use of FGD gypsum as an additive setting time retarder for Portland cement ...
The utilization of gypsum reinforced composites as building materials has garnered considerable attention owing to their exceptional amalgamation of mechanical strength, fire resistance, and versatile applications. This review initiates by introducing gypsum as a pivotal mineral in construction, subsequently exploring the concept of …
The literature contains a vast number of stabilizing techniques such as lime, cement, and fly-ash for treatment of expansive clay soils. However the use of gypsum as a stabilizing agent is currently not clear. ... However the results of this study showed that the gypsum is a good additive for improvement of the swelling clays, contamination of ...
Current study proposes an effective way to modify the properties of super-sulfated cement (SSC) paste and mortar with preheated flue gas desulfurization (FDG) gypsum at different temperatures and durations, and different sulfate compositions. Preheated FGDs with temperatures between 25 and 150 °C and durations between 0 …
Flue gas desulfurization (FGD) gypsum was evaluated as a setting time retarder to replace the natural gypsum in the production of Portland cement (CP II E-32). The results of physical-chemistry and morphological characterization of both products showed a material of high purity, calcium sulfate dehydrate for natural gypsum, and higher ...
OPC paste with a water cement ratio 0.4 to 0.5 was prepared by mixing 500 grams of ordinary Portland cement, a fixed amount of sugar of 0.02% by weight of cement with a combination of different ...
The expansive properties and quick set of Oil Well Cement W-60 will help the experienced cement formulator produce a high quality cement job. Oil Well Cement W-60 can also be used as stand-alone products in work-over operations. Oil Well Cement W-60: Add an expansion characteristic to counter Portland cement shrinkage
PDF | On Jan 1, 2017, Natalia Vasilyevna Chernysheva and others published Effective Composites Employing Fast-Hardening Gypsum Cement Binders for Additive Manufacturing | Find, read and cite all ...
There are studies on titanium gypsum (TG) as a cement retarder, cementing material, or the production of lightweight wall materials and roadbed materials, but the application of TG is still limited, the utilization of TG is in the stage of exploration. ... First, the cost resulting from the use of chemical additives and high-volume cement is ...
However the use of gypsum as a stabilizing agent is currently not clear. This paper deals with the performance of the gypsum as an additive for treatment of the expansive clay soils by means of swell potential and strength. Optimum water content for the best compaction of the bentonite was first determined by standard compaction tests.
At the same time the gypsum has gained recognition as a product. It is currently used in gypsum binders, plasters and plasterboard manufacture, as well as an additive in the production of Portland cement. In this paper, the feasibility of FGD gypsum in cement and concrete as an admixture was investigated. 2. Experimental2.1. Materials
The aim of this research is to study the technical feasibility for the use of FGD gypsum in partial or total substitution of natural gypsum as retarder additive of the …
The joint mechanochemical activation of siliceous mineral additives, Portland cement and gypsum binders helps to obtain higher values of physicomechanical parameters in the initial and subsequent periods of hardening of the gypsum cement composite [25]. This is due to the formation of stable water-insoluble hydrate new …