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This paper presents the results of an experimental investigation carried out to evaluate the compressive strength and transverse strength of 1 : 3 mortar mixes in which natural sand was replaced with 20%, 50%, and quarry dust by weight which were further modified by partially replacing cement with four percentages (15%, 20%, …
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that, the maximum optimized compressive strength is obtained for optimal mix percentage of Flyash-15% Lime-30% Gypsum-2% Quarry dust-53%. Key words : Fly ash, Lime, Gypsum, Quarry dust, Compressive strength and Water absorption. Introduction
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Given this crushed concrete debris is especially suitable for producing recycled aggregates RCAs ... lower-quality lime fly ash of class F was used as a replacement for a portion of the cement. ... (2022) Compressive strength prediction of fly ash-based geopolymer concrete via advanced machine learning techniques. Case Stud …
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The escalating demand for natural resources within the construction industry is progressing upward. At the same time, however, there is a great concern regarding the depletion of these resources. This review paper emphasizes the significance of utilizing alternative aggregate materials in concrete. Particularly, it aims to explore replacing …
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Moreover, as the phosphogypsum content increases, the unconfined compressive strength (UCS), splitting strength, and CBR value of the lime-fly ash …
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Crushed stone stabilized with it could be used as road base material. ... fly ash and lime. Its strength at early age was much higher than that of the ordinary lime-fly ash road base materials. ... The compactness ratio was 98%. The test result of the strength is listed in table 4. TABLE 4: COMPRESSIVE STRENGTH OF CRUSHED …
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Influence of Quarry Dust and Fly Ash on the Concrete Compressive Strength Development S. N. Ramana, M. F. M. Zainb, H. B. Mahmuda, K. S. Tanb aDepartment of Civil ...
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In training of the models; day (D), Portland cement (PC), water (W), sand (S), crushed stone I (CS-I), crushed stone II (CS-II), high range water reducing agent (WRA), fly ash (FA) and CaO were entered as input; while compressive strength (f c) values were used as outputs. The models were trained with 120 data of experimental results and then ...
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The results show that adding crushed stone to the PLF mixture can effectively improve the compression rebound modulus, unconfined compressive strength, and flexural tensile strength.
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Dry unit weight of compacted specimens is found to change from 1.68g/cc to 1.47g/cc with increase in % of fly ash, and changes from 1.93 g/cc to 1.6 g/cc with addition of 4% lime and increment of ...
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Fig. 1 shows the variation of unconfined compressive strength (q c) with curing time for Rajghat fly ash (R), which is typical of the result obtained for the different fly ash-soil-cement combinations.Without cement, the class F fly ash shows very little self-hardening property. There is significant gain in strength even with a small addition of …
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The mechanical strengths (compressive strength, splitting strength) of lime-fly-ash crushed rock of 7, 90, 120, and 180 d are about 13%, 60%, 70%, 80% of its ultimate …
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The results revealed that a combination of 10 % fly ash with 10 % lime was enough to stabilize the soil to achieve the strength of a class 20 block whereas a combination of 10 % fly ash and 14 % ...
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Modification of Lime-Fly Ash-Crushed Stone with Phosphogypsum for Road Base Hao Zhang,1 Yuan Cheng,1 Lei Yang,2 and Weikang Song1 1School of Civil Engineering, Zhengzhou University, ... compressive strength, composition structures, wetting-drying cycle tests, and shrinkage tests were
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This study investigated the durability of recycled lime-fly ash treated aggregates (RTA) as pavement base and sub-base layers. First, the both the physical and chemical properties of the waste lime-fly ash treated aggregate (WTA) materials were tested. Then, RTA were designed according to the specifications and further examined …
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For limestone, the 10% and 40% replacement fractions exhibited an insignificant reduction in compressive strength, indicating that a 40% replacement of sand with limestone dust is practical for ...
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In this study, artificial neural networks and fuzzy logic models for predicting the 7, 28 and 90 days compressive strength of concretes containing high-lime and low-lime fly ashes have been developed.
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This research was designed to optimize the mix ratios of LFSL applied in the pavement structure, subgrade, slopes, and foundations by conducting the unconfined compressive strength ( UCS) test, California bearing ratio ( CBR) test, resilient moduli …
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Shi H-S, Xu B-W, Zhou X-C (2009) Influence of mineral admixtures on compressive strength, gas permeability and carbonation of high performance …
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compressive strength of the PG–lime mixture, Shen et al. (2007)andShen et al. (2008) gave a more precise range, ... Mixture PG Fly ash Lime Crushed stone A6032 8 0 B4054 6 0 C1520 6 59 D612 6 76 ...
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Modification of Lime-Fly Ash-Crushed Stone with Phosphogypsum for Road Base Hao Zhang, Yuan Cheng, Lei Yang, Weikang Song; Affiliations Hao Zhang School of Civil Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China Yuan Cheng School of Civil Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China ...
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Fly ash-based geopolymer concrete (FAGPC) presents a viable alternative to traditional Portland cement-based concrete for rural road construction. Unlike conventional concrete, which relies on …
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The results indicate that lime-fly ash-crushed stone modified with phosphogypsum has the required strength of the road base material and favourable performances in environment (wetting-drying ...
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Compressive strength testing was performed after casting and curing for 28 days. 19 of the 20 mix combinations had slightly lower compressive strength than the M1 base mix, but all of the other mix combinations had compressive strength greater than the necessary characteristic strength of M 25 grades concrete. ... Lime Stone & Fly Ash …
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This paper investigated the feasibility of replacing cement with fly ash (FA) mass ratios ranging from 40 to 70% to produce high-volume FA (HVFA) concrete. A suite of mechanical tests were conducted over a 180-day time frame. The hydration properties were systematically evaluated using isothermal calorimetry test, X-ray diffraction analysis, …
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This study explores the lime–pozzolana pastes made from high calcium hydrated lime blended with type F fly ash and silica fume, with the total pozzolana content up to 40%. Research focuses on the development of the compressive strength by varying the water–binder ratio, powder proportioning, fineness of lime, and curing conditions.
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Enhanced Pozzolanic Activity of Crushed Brick Powder with Hydrated Lime: Concrete Durability Study. Next. ... (m-NC) content to improve the engineering …
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Few studies have been performed to stabilize high expansive soils by using limestone powder. Al-Azzo studied the effect of crushed limestone (passing sieve #40) on engineering properties of high expansive clay. In the study, crushed limestone dust was added to the expansive soil in the proportion of 2%, 4%, 6%, 8%, and 10%.
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My Research and Language Selection Sign into My Research Create My Research Account English; Help and support. Support Center Find answers to questions about products, access, use, setup, and administration.; Contact Us Have a question, idea, or some feedback? We want to hear from you.
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The present work examines the behavior of lime fly ash-treated recycled concrete aggregate (LFRCA) as a base course material for low-volume rural roads (LVRRs). The recycled concrete aggregate (RCA) material was stabilized with 10%, 15% and 20% LFA content with a lime-to-fly ash ratio of 1:2. Mechanical tests were carried …
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