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Preparation and performance evaluation of an innovative …

The compressive strength test of pervious concrete was conducted according to the hardened cement concrete section in standard JTG E30-2005/ISO 4012-1978, where the sample size was prepared as 100 mm × 100 mm × 100 mm, and with the consideration of size effect, all compression strength results were deducted to a fraction …

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Applications of Cement

Soil-cement (SC) is an engineered, densely compacted mixture of soil/aggregate, portland or blended cement plus, sometimes, other cementitious materials, and water. SC looks …

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Investigation on the preparation of low carbon cement …

Compared to Portland cement, CSA cement not only has better performance, but also has a lower carbon footprint due to lower calcination temperature and lime saturation (Cui, Lu, et al., 2023; El-Alfi and Gado, 2016; Ludwig and Zhang, 2015). Therefore, CSA cement is considered to be the most likely replacement for Portland …

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Preparation and properties of calcium aluminate cement …

As early as the 1990s, Singh et al. [17] used lime, red mud, and fly ash as raw materials to study the preparation of cement with different main mineral compositions. The results revealed that the compressive strength of the prepared cement with C 4 A 3 S as the main mineral phase is comparable to that of ordinary Portland cement.

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Preparation and characteristics of porous magnesium phosphate cement

1. Introduction. Since magnesium phosphate cement (MPC) was investigated in the 19th century, it has been regarded as an irreplaceable material because of its significant advantages, such as rapid setting and hardening, high early strength, high bonding and low shrinkage characteristics, and attracted wide attention in the fields of …

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Preparation of preplaced aggregate concrete and …

In this study, preplaced aggregate concrete (PAC), a type of coarse aggregate interlocking concrete, was prepared. The preparation process comprises the following two main steps: first, the coarse aggregate was piled in a certain way to form a natural skeleton; then, the skeleton was filled with the formulated mortar.

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Preparation and properties of pretreated jute fiber cement …

Based on the research at home and abroad, it can be seen that the development prospect of plant fiber cement-based composites is broad, but there are still many problems to be solved: plant fiber has expansibility, which is easy to degrade in alkaline environment, affecting the long-term durability of composites; at present, the …

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Design and preparation of ultra-high performance concrete …

2.2. Methodology2.2.1. Mix design. To design the cement-based materials effectively, numerous particles packing models were developed by different researchers, including Fuller and Thomsen, Larrard and Sedran, 2002, Sedran, 1994 and Andreasen (Yu et al., 2014b).On the basis of the particle packing model, three types of quartz sand …

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(PDF) Preparation of Magnesium Phosphate …

The approach to use it as the raw material for the preparation of magnesium phosphate cement (MPC) has potential and proves effective. In this study, three different phosphorus sources (PS ...

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Use of plastic waste as aggregate in cement …

However, for practical applications of plastic waste in concrete preparation, some other important aspects such as LCA and LCC analyses of the product and recycling at the end of the service life need to be …

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Preparation of cement composites

3.3 Preparation of cement composites. 3.3.1 Water demand and setting time of cement . The water demand of cement is defined as the quantity of water required to form a paste of standard consistency. The standard consistency is measured with Vicat apparatus by using 10 mm diameter plunger penetrating into the paste under the self- weight of 300 ...

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Life cycle assessment of sustainable concrete with recycled …

The construction industry is one of the greatest consumers of natural resources and contributors to emissions and solid waste. In 2020, it was responsible for emitting 11.7 gigatons of CO 2 and consuming 149 exajoules of energy, equivalent to 37% and 36% of the global totals, respectively, although these indicators have peaked in …

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Preparation and Characterization of Novel Sulfoaluminate-Cement …

2.2. Preparation of Sulfoaluminate-Cement-Based Nonautoclaved Aerated Concrete. The preparation methodology of the SAC-NAAC is depicted in Figure 1. Initially, sulfoaluminate cement, polycarboxylate superplasticizer, borax, and calcium stearate were mixed at a rotation speed of 140 ± 5 r/min for 3 min by following the prescribed mixture …

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Preparation of sulphoaluminate belite cement from fly ash

These cements fulfill all the requirement of Portland cement and have very high early strength. Porosity measurements show that the total pore volume in early period is comparatively less than that of Ordinary Portland Cement. ... All fights reserved 0008-8846/94 $6.00+.00 0008-8846(94) 00050-6 PREPARATION OF SULPHOALUMINATE …

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Specification Guidelines for Surface Preparation of …

Concrete preparation is the process by which sound, clean, and suitably roughened surfaces are produced in areas to be repaired.4 It includes delineating the repair …

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Preparation of slag-based concrete and its carbon …

The process for carbonization of the ed concrete samples is illustrated in Fig. 1.After curing, the cube test block of ed concrete was placed into the carbonization chamber, high-purity CO 2 (purity > 99 %) was passed into the chamber and the pressure in the carbonization chamber was kept constant (0.1, 0.15, 0.2 MPa) until …

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Preparation of sulphate aluminate cement amended bentonite and …

The SAC-bentonite composites are mainly made up of bentonite and sulphate aluminate cement. At first, sulphate aluminate cement and bentonite were mixed in the proportion of 0:1, 1:3, 1:1, 3:1 and 1:0, respectively, and then, deionized water was added. The ratio of water to solid was kept at 1:10.

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Preparation of Ultra-High Performance Concrete with …

The demand for high strength construction materials is the force behind the development of Ultra-High Performance Concrete. Bouygues was the first to start research in Reactive Powder Concrete, a kind of UHPC from 1990 to 1995 [1].The pre-stressed hybrid pedestrian bridge at Sherbrooke in Canada completed in 1997 was the …

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Preparation of a novel superabsorbent fiber–cement …

The fiber section fixed by the cement matrix produces cracks, and the analysis is that the fibers are fractured in tension. The bond strength between fiber and cement at the weak surface of the cement test block is greater than the tensile strength of fiber. The fibers in Fig. 9 (C) are rough, while in Fig. 9 (D) they are smooth. The …

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Preparation and properties of carbonated steel slag used in cement …

At present, carbonation or CO 2 curing is widely used in cement concrete products, because the process can improve the mechanical [18] and durability [19] properties of cement concrete. Furthermore, f-CaO and MgO-containing minerals in SS make it a potential candidate for carbonated binder, and it has already been proved to …

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Preparation and characterization of cement mortar mixed …

During the preparation of cement mortar, the water consumption and physicochemical properties directly affect the workability of fresh materials [5] and significantly influence the hydration process. In particular, the phase change and microstructure of cement hydration products directly affect the compressive strength …

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How Cement is Made

The Cement Manufacturing Process. While each cement plant may differ in layout, equipment, and appearance, the general process of manufacturing portland cement is the same: crushed limestone and sand are mixed …

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Preparation and properties of cement mortar/ metal …

The sand comes from Xiamen ISO Standard Sand Co., Ltd. China. The component proportion of cement mortar is shown in Table 1. The microcapsules and sand were directly added into cement and the mixture were completely stirred in a cement and mortar mixer for 3 min accroding to the stirring rate stated in the standard of JC/T …

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Preparation of preplaced aggregate concrete and …

Some materials used in the C, including cement, fine aggregate, water, and water-reducing agent, are the same as those in the mortar, as mentioned in Section …

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Preparation of sustainable and green cement-based composite binders

UFS produced by further mechanical grinding of ground granulated blast furnace slag is a common component in the preparation of high-strength concrete, the application of which is widespread in practical engineering (Teng et al., 2013). Because of the ideal hydration rate and high hydration degree of UFS, the pore structure and ITZ of …

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Use of plastic waste as aggregate in cement mortar and concrete …

A review on the use of plastic waste in preparation of cement mortar and concrete preparation is already available [22]. However, several important properties such as toughness, failure characteristics, thermo-physical properties, durability performance of cement mortar and concrete containing plastic as aggregate were not discussed before …

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Preparation of nano cement particles by wet-grinding and …

The schematic representation of cement hydration with and without Nano-C seed presented in Fig. 18. In cement system, the ions dissolution occurred immediately after mixing, and a few minutes later, oversaturation state was formed. Finally, the C-S-H gel formation and adhered on the surface of cement grains.