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the effect of dolomite additive on cement hydration

the effect of dolomite additive on cement hydration

2015-1-1 · The accelerating effect of additive was proved. At low percentage dolomite plays a role of cement replacement; at higher dosage – the „dilution” effect can be observed

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effects of a portland cement additive rich in sio2 and

effects of a portland cement additive rich in sio2 and

2020-10-20 · Portland cement (43 grade) having a specific gravity of 3.15 and specific surface area of 3363 cm 2 /g was used as the conventional binding material. The SiO 2 and Al 2 O 3 were introduced into the RAP-RCCP mixture by means of a Portland cement additivecommonly known as StabilRoad that isrich in alumina content. It is available in powdered form and is shown in Fig. 2 (Fig. 2a represents the

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investigation on pozzolanic effect of mineral additives in

investigation on pozzolanic effect of mineral additives in

1999-6-1 · In modern cement and concrete technology, addition of active mineral additives (fly ash, silica fume, slag, natural pozzolan, etc.) is of great scientific significance .It is well known that the clinker minerals C 3 S and C 2 S that take about 75% of the portland cement will form high basic calcium hydrosilicates (c/s > 1.5) with a lime/silica ratio of 1.6–1.9 and a large amount of calcium

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effect of additives on properties of magnesium

effect of additives on properties of magnesium

2015-5-5 · MPSC has the characteristics of rapid setting and high early strength. In the present study, the effect of different additives, sodium tripolyphosphate (ST), borax (NB) and boric acid (BA) on the properties of MPSC was investigated, including the setting time, temperature rise of cement during initial hydration and strength development

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effect of portland cement and lime additives on properties

effect of portland cement and lime additives on properties

2009-3-1 · Another purpose was finding optimum Portland cement and lime contents. The last and most important aim was comparing the effects of these two additives on CIR mixtures. A laboratory study was undertaken to evaluate the effect of Portland cement and lime on the performance of CIR mixes

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effects of zirconia additives on β-tricalcium-phosphate

effects of zirconia additives on β-tricalcium-phosphate

2021-1-15 · On the contrary, zirconia additives were reported to reduce the compressive strength of the cement in a separate study ; the mechanism of this “opposite” effect of the zirconia additives is difficult to clarify. However, one potential mechanism might be due to the dry heat sterilization of the cement

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the effects of cement and natural zeolite additives on

the effects of cement and natural zeolite additives on

2013-11-1 · In this study, the effect of cement and natural zeolite additives on the characteristics of dispersibility and swelling potential of clay soils were investigated. A fixed percentage of cement (3%) plus different percentages of natural zeolite (1%, 3%, 6%, 10%, 15%, and 20%) were mixed with four different clay soil samples

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effect of nanocellulose as an additive in cement

effect of nanocellulose as an additive in cement

2019-1-17 · Mazlan D, Mddin MF, Tokoro C, Ibrahim IS (2016) Cellulose nanocrystals addition effects on cement Mortar matrix properties. Int J Adv Mech Civil Eng 3 (1). ISSN 2394-2827 Google Scholar. 2. Hubbe MA, Rojas OJ, Lucia LA, Sain M (2008) Cellulosic nanocomposites: a review. BioResources 3:929–980 Google Scholar

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what are concrete additives? why do we use them? | big d

what are concrete additives? why do we use them? | big d

2019-10-22 · These additives are most efficient during the cold seasons. Calcium chloride is used as the accelerating additive on non-reinforced concrete. Air-Entrainment. These additives are used to introduce microscopic air bubbles to stabilize the concrete. The resultant effect is preventing the concrete

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(pdf) effect of sodium compounds additives on the strength

(pdf) effect of sodium compounds additives on the strength

Effect of sodium compounds additives on the strength of cement-stabilized soils Harith E. Ali 1) , Nabel K. Asmel 1) , Abideen A. Gani yu* 2) and Hamzat Tijani 3)

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[pdf] effect of pre-treatments and additives on the

[pdf] effect of pre-treatments and additives on the

Corpus ID: 220302962. Effect of Pre-Treatments and Additives on the Improvement of Cement Wood Composite: A Review @article{Brahmia2020EffectOP, title={Effect of Pre-Treatments and Additives on the Improvement of Cement Wood Composite: A Review}, author={F. Brahmia and P{\'e}ter Gy{\"o}rgy Horv{\'a}th and Tibor Alp{\'a}r}, journal={Bioresources}, year={2020}, volume={15}, pages={7288-7308} }

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the 23 types of concrete admixtures(additives)used in concrete

the 23 types of concrete admixtures(additives)used in concrete

2021-3-23 · Concrete admixtures refer to the components of concrete that are added immediately before or during the mixing process, except for Portland cement, water and aggregates. Concrete admixtures can improve concrete quality, manageability, accelerate or delay setting time and other properties, and can achieve specific effects by changing these properties

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effect of superabsorbent polymers and expansive additives

effect of superabsorbent polymers and expansive additives

1 天前 · The two types of expansive additives also have a certain effect on the reduction of the autogenous shrinkage of AAS mortar. When the MgO-based expansion agent and gypsum dosage were 2.5%, the autogenous shrinkage of AAS mortar at 14 d was about −1200 μm/m, and these results do not seem to be significantly different compared to the reference

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