New type of lightweight high-strength ed concrete blocks
ResultThe results demonstrated that a type of ed concrete with 1200 kg/m ³ density and >15 MPa uniaxial compressive strength can be produced by chemical ing and by adding three types of ...
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Effect of Water Chemical Corrosion on Strength and …
ResultThe basic uniaxial compressive strength and axial strain of specimens under chemical erosion, under different pH values, were also tested by some researchers (Xie et al. 2011;Jiang and Jiang 2012 ...
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The Effect of Weathering on the Mineral Grains and
ResultWeathering process leads to changes in mineral composition, microdefects and mechanical properties of mineral grains, which has a significant impact on the macroscale mechanical properties of granitic rocks. In this paper, four granitic samples with different weathering degrees were investigated using …
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Concrete | Definition, Composition, Uses, Types, & Facts
ResultAggregates are generally designated as either fine (ranging in size from 0.025 to 6.5 mm [0.001 to 0.25 inch]) or coarse (from 6.5 to 38 mm [0.25 to 1.5 inch] or larger). All aggregate materials must be clean and free from admixture with soft particles or vegetable matter, because even small quantities of organic soil …
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Effect of Addition of Rice Husk Charcoal on Concrete Compressive Strength
ResultAnita Rajor. Influence of bacteria on the properties of concrete made with rice husk ash (RHA) is presented in this paper. For this purpose, control concrete was designed to have 28-d strength of ...
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Effects of Different Mineral Admixtures on the Properties of …
ResultChemically active mineral admixtures decrease workability and setting time of concrete but increase the heat of hydration and reactivity. On the …
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(PDF) Effect of admixtures in concrete mix design
ResultThe concrete mix with an addition of appropriate chemical admixtures often improves its plastic properties such as workability, pumpability, cohesion and adhesion. Addition of admixtures will also ...
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(PDF) Study of Effect of Chemicals (Acid) Attack on Strength …
ResultIn this study effects of different water proofers on compressive strength of cement concrete has been made using experiments. Total 108 cubes were cast using normal, 60% of 20 mm and 40% of 10 mm size of coarse aggregates having three water proofer Dr. fixit, Roff, Aqua Roff proportion of 4ml/kg cement.
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Effect of Mineral Aggregates and Chemical Admixtures as …
ResultIn the present work, the effect of mineral aggregates (pumice stone and expanded clay aggregates) and chemical admixtures (superplasticizers and …
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Experimental study on mechanical properties of concrete …
ResultWith the help of "incorporating mineral additives" like fly ash and silica fume into the concrete mixes, a series of fundamental tests were conducted and …
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An Effect of Alkaline Solution on Strength of Geopolymer …
Resultcolour of fly ash can be tan to dark grey, depending upon t he chemical and mineral constit uents. By the year 2010, the amount of An Effect of Alkaline Solution on Strength of G eopolymer Concrete
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(PDF) REVIEW ON EARLY STRENGTH CONCRETE
ResultAbstract. A brief literature review about the influence of mineral admixture (alccofine), chemical admixtures on the fresh concrete, and their effect on strength and durability behaviour of ...
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(PDF) Influence of silica fume on strength
ResultHigh Strength Concrete with water cement ratio of 0.35 to 0.45 and compressive strength in the range of 40 MPa to 60 Mpa are usually made using super plasticizer with or without mineral admixtures.
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A Study on Effect of Alkaline Activator on Strength Properties …
Resulteffect o f source materials on strength of co ncrete (Anuar, K.A 2011) where the source m aterial f or g eopolymer was bottom ash rather than prevalently utilized fly ash and GGBS.
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Effect of Water Quality on Compressive Strength of Concrete
ResultExcept the known effect of the water/cement ratios on the compressive strength of the concrete [9], is also known that the impurities contained in the construction materials make worse the ...
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(PDF) Natural Admixture As An Alternative for …
ResultThis paper presents a critical review of several natural materials used in concrete as an admixture that influences the mechanical and durability properties of concrete. This kind of …
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Basic Properties of Calcined Underground Ant Nest Materials …
ResultR rp reflects the contribution of the pozzolanic effect of mineral admixtures to the strength of the entire system. A negative value shows that mineral admixtures reduce the strength. (4) The strength contribution rate of cement hydration reaction P h is defined as follows:
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Different mineral admixtures in concrete: a review
ResultThe concrete strength augment as the percentage of metakaolin content increase up to 15% of replacement with its cement weight.Metakaolin increases the strength of concrete in comparision with normal concrete . …
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HIGH STRENGTH ENHANCEMENT OF CONCRETE BY USING …
Resultby adding mineral and chemical admixtures. From the present investigation it is observed that the. experimental characteristic compressive strength of the. cubes is nearl y 15% to 20% more, t han ...
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Effect on Compressive Strength of Concrete by Partial Replacement …
ResultIn this paper, an effort has been made to determine the effect on compressive strength of concrete by partial replacement of cement with 0%, 10%, 20% and 30% of fly ash for M20 grade of concrete ...
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Effect of Relative Levels of Mineral Admixtures on Strength of Concrete
ResultIn the present scenario to fulfill the demands of sustainable construction, concrete made with multi-blended cement system of OPC and different mineral admixtures, is the judicious choice for the construction industry. Silica fume (SF) and fly ash (FA) are the most commonly used mineral admixtures in ternary …
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Investigation of the effect of mineral additives on concrete …
ResultSome of these additives, such as silica fume and slag, generate higher concrete strength resistance (Bhanjaa & Sengupta, 2005; Bharatkumar et …
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The Effect of Feldspar, Mica and Clay Minerals on Compressive Strength
ResultTable 18.8 displays the results of compressive strength at different ages. The results ranged between 7.2–13.5 MPa at 2-days, 16.4–29 MPa at 7-days and 20.4–44.3 MPa at 28-days. These values are the lowest "M" and the highest belonged to "R" at 2-days and at 28-days. At 7-days, the lowest belonged to "M" …
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EXPERIMENTAL ANALYSIS OF EFFECT OF MINERAL …
Resultconcrete. It emphasized the effect of silica fume on workability level and its maintenance of fresh concrete; strength development, strength optimization and elastic modulus of hardened concrete; Silica fume was obtained from Akbar Ali chemicals, Salem and its physical and chemical properties. Pumice stone
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Effects of active mineral admixture on mechanical properties …
ResultHowever the complex ions have destructive effects on the mineral admixture concrete. Compared with the ordinary concrete, it shows the most …
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Effect of Saline Water in Mixing and Curing on …
ResultIn this paper, The effects of sodium chloride (NaCl) solutions as mixing and curing at concentrations of 1g/l, 2g/l, 4g/l, 6g/l and 8g/l .A total of 72 concrete cubes, using metal mould of 150 X ...
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(PDF) A CRITICAL REVIEW OF EXPERIMENTAL STUDIES ON STRENGTH …
ResultTo have a clear picture of present study first the effect of incorporating mono fibres, hybrid fibres in conventional concrete and The effect of minerals admixtures (binary, trinary, quadruple blends) on mono fibre and compound fibre reinforced concrete on strength properties are reviewed and discussed followed by their long term …
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Effect of Salt Water on Mechanical Properties of …
ResultConclusions 1. Laboratory investigations established that under the effect of salt solutions and tap water on concrete during its alternating wetting and drying under positive …
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Materials | Free Full-Text | Effect of Mineral Aggregates and …
ResultEffect of Mineral Aggregates and Chemical Admixtures as Internal Curing Agents on the Mechanical Properties and Durability of High-Performance …
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Effects of clay mineral and chloride salt on the strength of …
ResultThe main difference is the change in the UCS with the increase of MgCl 2 content. The UCS of 6% kaolinite samples with MgCl 2 first increases from 3.93 to 6.93 MPa and then decreases to 3.89 MPa. When the chloride content is 1–2%, the effect of MgCl 2 on the increase in the UCS is better than that of CaCl 2.
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