No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
In this study, the water-cement ratio of ultra-fine sulphoaluminate cement-based hybrid grouting material (SCGM) was constant at 0.8. Acrylamide (AM) was added into slurry A at a rate of 0%, 5%, 20%, 35% and 55%, as listed in Table 4, and was labeled as SAC, AM-5, AM-20, AM-35 and AM-55 respectively. To consider the convenience of grouting ...
Abstract. Ultra-fine active silica powder (UASP) is beneficial to improve the properties of cement and concrete. In this study, the fluidity, compressive strength, and durability (freezing-thawing resistance, chloride ion penetration, and carbonation resistance) of concrete with 0 %, 5 %, 10 %, 15 %, and 20 % UASP addition were evaluated. The results …
The specific parameters of the raw powders utilized are detailed in Table 1.Ultra-fine TiC powder was synthesized using a combination of carbothermal reduction and calcium treatment [].Initially, C and TiO 2 were homogeneously mixed at the molar ratio of 3.6 in WC-Co ball milling jars with a ball material ratio of 3:1 and a rotational speed of 200 rpm.
The development of concrete technology has introduced the concept of ultra-fine powder (defined as a powder with a particle diameter less than 10 μm), which has a specific surface area of over 500 m 2 /kg [4]. The grinding technology can significantly affect not only the particle characteristics, such as particle size distribution (PSD ...
Request PDF | On Oct 1, 2023, Yingbin Wang and others published Preparation of sustainable ultra-high performance concrete (UHPC) with ultra-fine glass powder as multi-dimensional substitute ...
Ultra-fine cement is a cement that has been rapidly developed in recent years, and it is a new type of cement with an average particle size of 3.1 μm and a specific surface area of 780 m 2 /kg . In recent years, it has been widely used to …
Superabsorbent polymer (SAP) as internal curing agent can effectively mitigate the autogenous shrinkage and promote cement hydration of ultra-high performance concrete (UHPC). However, it has a risk of impairing the mechanical performance of UHPC given the macro pores left. This study developed ultra-fine SAP powder aiming at securing the lower shrinkage and …
This study investigated the effect of ultrafine limestone powder on the calcium leaching performance of cement mortar. Ammonium chloride solution (3 mol/L) was used as the accelerated medium with a controlled pH disposal, and leaching tests of cement mortar were conducted using continuous immersion and wet/dry cycles.
High cost and CO 2 emissions are the issues that need to be addressed in the widespread application of UHPC. The application of mineral admixtures in UHPC has become a new development direction. Ultra-fine glass powders with median diameter d50 of 316 nm (named as nGP) and 5.33 μm (named as mGP) were fabricated to replace silica fume and blast …
The ternary blend with OPC, ultra-fine fly ash and metakaolin is recommended to be economically advantageous for production of high strength concrete. Ultra-fine slag as a partial replacement of OPC is studied in terms of mechanical and durability properties by . They concluded that due to large surface area of ultra-fine slag, it is more ...
Previous studies have indicated that CS exhibited the favorable characteristics of fine aggregates as an alternative material in the improvement of workability [16], [17], mechanical properties [18], abrasion performance [19] and durability of cement-based materials [20].From the perspective of workability, although an appropriate amount of CS aggregate can improve the …
3.1 Physical and Mechanical Properties of Coral Aggregate. Table 3 shows the natural coral aggregate, the acid-washed coral aggregate and the coral aggregate enhanced by ultra-fine cement slurry. From the table, it can be found that all indexes of coral aggregate after different treatments have changed. Compared with natural coral aggregate, the strength of …
Ultra-high-performance concrete (UHPC) has been developed with the motivation of achieving a cementitious composite that possesses excellent mechanical and durability properties [1], [2], [3].The cementitious materials, fiber, superplasticizer and the quartz sand constitute the main components of UHPC, where steel fiber is beneficial for achieving high …
The Ultra- Fine Glass Powder (UFGP) smaller than 0.075 mm (No. 200) produced from grinding and polishing edges on flat glass of different size and thickness, has been used instead of sand in different proportions which are 15%, 30%, 45%, 60%, 75%,
With the usage of fine or ultra-fine supplementary cementitious materials, the packing density is evidently enhanced. This improvement in microstructure results in higher …
This study examines the effects of ultrafine recycled powder (URP) obtained from construction and demolition waste on the hydration kinetics, setting behaviour, and chemical …
Superabsorbent polymer (SAP) as internal curing agent can effectively mitigate the autogenous shrinkage and promote cement hydration of ultra-high performance concrete …
In this study, ultra-fine slag (UFS) was used to prepare ed concrete by replacing Portland cement (PC) to enhance the compressive strength of ed concrete. PC …
The peat soil in the Dianchi Lake area of Yunnan, China, is widely distributed, bringing many problems to engineering. The peat soil foundation is usually treated by the cement mixing method, and the reinforcement effect of …
Solid-waste-based composite micronized powder is a kind of ultra-fine powder with small particle size and high activity prepared from industrial solid waste. It has the …
Reactive powder concrete (RPC) is an ultra-high-performance concrete (UHPC) developed years ago by Bouygues, with the aim to build strong, durable, and sustainable structures. Some differences can be underlined …
Reactive powder concrete (RPC) is an ultra-high-performance concrete (UHPC) developed years ago by Bouygues, with the aim to build strong, durable, and sustainable structures.
The Ultra-Fine Glass Powder (UFGP) smaller than 0.075 mm (No. 200) produced from grinding and polishing edges on flat glass of different size and thickness, has been used instead of sand in ...
Thus, this study is using untreated walnut shell powder (UWSP) and ultra-fine treated walnut shell ash (UFTWSA) as a substitute for cement. Different weight fractions of UWSP and UFTWSA (5, 10, 15 and 20%) were used to investigate the influence on …
Reactive powder concrete is a type of UHPC in which coarse aggregate is eliminated as it is the vulnerable part of concrete. ... To bring out the performance level of silica fume added concrete at early age, the ultra-fine fly ash is added slightly greater than silica fume and about 10% of water is reduced.
The rapid development of ultra-high-rise buildings, long-span bridges and superhighways is rapidly increasing the demand for GGBS in ultra-high performance concrete (UHPC) [6].The ultra-fine grinding process contributes directly to the accumulation of an alarmingly large volume of ultra-fine GGBS (UFS) with an 80% cumulative passing particle …
Materials. The primary components used in this experimental protocol are ultra-fine ceramic waste (CW) and high-alkaline white cement (WC). CW came from El-Gawhara for ceramic and porcelane ...
Manufacturer of MICRO FINE G-FINE - Ultrafine Finest Filler ULTRA Fine G-Fine, G-Fine Ultrafine Gfine Ultra Fine Cement Additive, Ultrafine Cement Additive and Microfine Cement Injection offered by Guru Corporation, …
This paper reviews research on utilization of two main ultra-fine material, that is, ultra-fine fly ash and slag. The paper discusses the feasibility of ultra-fine material usage as …
The materials used in this study to produce the SCC were OPC 53 grade cement fit in with the limits specified in IS-12269 [18] with the specific gravity of 3.15. class F fly ash collected from Koodankulam Nuclear Power Station Tamilnadu India, with the specific gravity of 2.25, and Ultra fine natural steatite powder is purchased from locally available distributor which …
