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The hydraulic properties of ash from incinerated wastepaper sludge were investigated. It is shown that the phase composition of wastepaper sludge after heat treatment is similar to the classical fired carbonate-clay mixes. The necessity of using the combination of retarding admixtures with different action mechanism is shown. The strength in the initial hardening …
The effect of the ash on the mechanical strength of the mixtures can be improved by preliminary wet-milling of the ash. This paper deals with the physical, chemical and mineralogical characterization of a Wastepaper Sludge Ash (WSA) coming from a …
The properties of wastepaper sludge ash and its generic applications M F Azrizal 1*, M N Noorsuhada, M F P M Latif1, M F ... reclaimed that the chemical composition of the WSA from any given plant is highly consistent over time. Table 1. Comparing the WSA's with ASTM C618 [46] Class-N requirements and OPC. ...
The ashes generated in this process, often referred to as wastepaper sludge ash (WSA), differ widely in their chemical and mineralogical composition, depending on the composition of the feedstock, the production and waste treatment processes and the conditions of combustion, . Despite the volume reduction by incineration, the amount of waste ...
The chemical composition of dried and torrefied pulp sludge is presented in Table 6. Cellulose, hemicellulose, and lignin contents of dried pulp sludge were around 35.5, 10.6, and 9.7 wt.%, respectively. Previously, Deeba et al. reported similar composition of pulp sludge i.e., cellulose 32.8%, hemicellulose 13.9%, and lignin 14.6%. Biomass ...
The hydraulic properties of ash from incinerated wastepaper sludge were investigated. It is shown that the phase composition of wastepaper sludge after heat treatment is similar to the classical fired carbonate-clay mixes. The necessity of using the combination of retarding admixtures with different action mechanism is shown.
Meanwhile the chemical composition for soft soil samples was obtained from X-Ray Fluorescence test (XRF test). 2.2 Waste Paper Sludge Ash (WPSA) The wastepaper sludge ash (WPSA) is a main additive to stabilize the soft soil was used in this study.
pvt.Ltd.The chemical properties of waste paper sludge ash are Figure 3: Table 4: Chemical Composition of Waste Paper Sludge Ash. Property ; Value Silicon Dioxide . 59.47% Calcium Oxide The mix design for M25 has carried out by following the ; 8.69% Alumina and Ferric Oxide .
Study of Concrete Involving Use of Waste Paper Sludge . Standard sieve. The specific gravity of waste stone sludge ash was found to be 2.6.Chemical composition of stone sludge ash is presented in TABLE 1.Fig.1 shows waste stone sludge ash, Fig.2 shows sieved stone sludge ash and Fig.3 shows mixing of stone sludge ash with cement.
The chemical composition of the sludge can vary, being influenced by the operations and processes at the particular paper mill In most cases, paper sludge is co-combusted with other material such as, hazards associated with paper sludge ash part of waste code 10 01 01 to support NPS officers in their deployment review...
deinking mill sludges have different ash values. The high-ash sludge has only 60% of the heating value of the low-ash sludge. The analyses for bark and wood chips (which mills com-monly bum in a "hog" boiler) and wastepaper (which can be used as an energy source) are also given for comparison. Bark,
The ash was sieved through a 90 micron Indian Standard sieve. The specific gravity of waste paper sludge ash was found to be 2.6 Sajad A, et al [3]. The specific surface area of WPSA 4010 (g/cm2), Density is 2.93 (g/cm3) and the specific gravity of waste paper sludge ash was found to be 3.1[9]. 1.2.2 Chemical properties
The results of chemical analysis of the incinerated mineral part of the wastepaper sludge are shown in Table 1, which also characterize the composition of the ash. Table 1. Chemical composition of wastepaper sludge ash, wt.%. Full size table Portland-slag cement CEM II/A-S 42.5 R produced by PJSC "Volyn-cement" was used as binder in concrete.
the use of wastepaper sludge ash (WSA) in the building materials industry, which still has a huge unrealized utilization potential [10, 11]. However, properties of WSA and its behaviour strongly depend on the chemical composition, therefore it is essential to provide more data on the evolution of the reaction products [12].
Waste Paper Sludge Ash (WPSA) is a waste material collected from the Paper Industry. WPSA is used as cement replacement in producing mortar and was investigated on its chemical, physical and mechanical properties. Construction material with natural resources now become limited and causes of air pollution and environmental problems. WPSA becomes a …
This paper studies the use of wastepaper sludge ash (WPSA) for structural concrete in binary and ternary mixes with high-strength cement and two industrial by-products, ground granulated...
Chemical composition of WSA, wt % SiO2Al2O3Fe2O3CaO MgO SO3LOI 26.44 15.36 1.16 49.84 2.16 0.45 3.13 Fig. 2. XRD pattern of wastepaper sludge Khrystyna Sobol et al. 540 Fig. 3. XRD pattern of wastepaper sludge ash Fig. 4. DTA/TG/DTG curves of wastepaper sludge
The specific gravity of waste paper sludge ash was found to be 2.6.Chemical composition of paper sludge ash is presented in TABLE 1.Fig.1 shows waste paper sludge ash, Fig.2 shows sieved paper sludge ... Chemical composition of waste paper sludge ash Element Percentage Content O 15.83 Ca 14.94 Si 60.57 Al 2.06 Mg 3.59 S 1.07 K 0.16
Keywords: Ultra-high-perfomance-concrete, wastepaper sludge ash, non-destructive testing, flexural test 1. Introduction Concrete is the most commonly used material in the building industry and is widely used not only in Malaysia but worldwide. As an example, the construction of buildings, bridges, and roads are concrete structures that can
The dry wastepaper sludge comprises approximately equal amounts of organic and inorganic components, the latter consisting principally of kaolinite and limestone. The kaolinite content of wastepaper sludge can vary within the range of 15%–75% and the calcite content from 21% to 70% ( Péra and Amrouz, 1998 ).
The hydraulic properties of ash from incinerated wastepaper sludge were investigated. It is shown that the phase composition of wastepaper sludge after heat treatment is similar to the classical fired carbonate-clay mixes. The necessity of using the combination of retarding admixtures with different action mechanism is shown.
Waste paper fly ash has some cementitious properties, and its chemical composition is mainly composed of calcium, silicon, and aluminum. The mineralogical characterization shows the existence of lime and some reactive phases (calcium silicates), which in the presence of water can react and harden.
Wastepaper sludge ash (WSA) from a newsprint paper mill was investigated for its mineralogical composition and its reaction products and strength development after activation with water and sodium and potassium hydroxide solutions. The results showed the WSA to consist of calcite, free lime, gehlenite, tricalcium aluminate, belite, talc, quartz and probably a glassy phase. The …
Download scientific diagram | Chemical composition of de-inking sludge. from publication: Reuse of de-inking sludge from wastepaper recycling in cement mortar products | …
Chemical composition of paper sludge ash and diatomite Oxide (wt.%) Paper sludge ash Diatomite SiO2 35.9 92.8 Al2O3 22.8 3.4 CaO 33.2 0.3 Na2O 0.6 0.5 K2O – 0.5 MgO 4.5 0.5 Fe2O3 0.9 2.0 TiO2 2.2 – Total 100.1 100.0 These data …
Wastepaper sludge ash is mainly composed of calcium oxide (CaO), silica (SiO 2) and alumina (Al 2 O 3 ). Other constituents are considered as minor ones (MgO, SO 3, K 2 O, TiO 2, MnO, P 2 O 5 ). According to the presence of oxides and their amount, WSA can be compared to the cement (hydraulic binder) or to the fly ash (pozzolanic binder).
XRD pattern of wastepaper sludge ash Fig. 4. DTA/TG/DTG curves of wastepaper sludge DTA analysis of wastepaper sludge (Fig. 4) is complicated by the imposition of two simultaneously occurring processes – the combustion of the organic component and the firing of the mineral part of the sludge [11]. Endothermic effect at 373 K is associated ...
