· PDF Frost -resistance Durability of High Performance Concrete Prepared with Repeatedly Recycled Concrete Aggregates J 1Y Wu 1, 2, The new concrete was crushed to p roduce RCAs after 28 days curing. For convenience, the newly obtained RCAs could be
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FROST RESISTANCE OF CONCRETE WITH CRUSHED BRICK AS AGGREGATE UDC 691.322:691.4:620.251.1(045)=111 Ksenija Janković, Dragan Bojović, Dragan Nikolić, Ljiljana Lončar, Zoran Romakov Institute for testing materials, Belgrade, Serbia .
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· Limited experiences with crushed concrete materials in road construction in Norway have made it difficult to determine their level of frost susceptibility. To address this issue, the Norwegian Public Roads
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Recycled aggregate concrete (RAC) offers a green, sustainable answer to handle the increasing pile-up of construction and demolition waste. However, a big issue, especially in colder areas, is the durability of RAC against freeze-thaw cycles (FTCs). This paper rolls out a systematic literature review concerning RAC's frost resistance.
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· significantly affect the frost resistance of concrete [17–22]. Huda et al. [23] revealed experi-mentally that the frost resistance of recycled concrete tended to decrease with increasing RCA. Gokce et al. [24] found that microcracks were first concentrated in the old
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· PDF FROST RESISTANCE OF CONCRETE WITH CRUSHED BRICK AS AGGREGATE UDC 691.322:691.4:620.251.1(045)=111 Ksenija Janković, Dragan Bojović, Dragan Nikolić, Ljiljana Lončar, Zoran Romakov Institute for testing materials, Belgrade, Serbia .
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DOI: 10.2298/FUACE1002155J Corpus ID: 108505673 Frost resistance of concrete with crushed brick as aggregate @article{Jankovic2010FrostRO, title={Frost resistance of
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· Influence of sulfate attack on the frost resistance of concrete Fig. 1 shows W l and E d of PC concrete subjected to freeze–thaw cycles in fresh water and in sodium sulfate solution. During the initial 300 freeze–thaw cycles, the drop of E d is slower in solution than that in fresh water.
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· Frost Resistance and Mechanical Characteristics of Cement-Stabilized Macadam Mixed with Rubber Powder Authors : Shaolong Jie , Ph.D. [email protected] , Shuai Mao [email protected] , Zurun Yue [email protected] , Zhiqi Sun [email protected] , Tiecheng Sun [email protected] , Tianfei Hu [email protected] , Peng Xie [email protected]
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· The criterion, allowing estimation of frost resistance at compositions proportioning was proposed by Whiteside and Sweet [14]. This criterion is known as “saturation degree” (SD): (3) SD = V f. w V f. w + V air where V f. w and V air are volumes of frozen water and air per unit volume of concrete.
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· The damage of freeze-thaw cycles to concrete increases with the number of cycles. 2% nano-silica can improve the frost resistance of concrete in severely cold regions. Currently, the lowest temperature for the conventional freeze-thaw (FT) cycles tests of concrete are usually not lower than −20 °C. However, for concrete structures in
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· Based on results of frost resistance tests, the optimum dosage of PAC waste residue for pressed concrete blocks is 10%. After 50 freeze–thaw cycles, when the dosage of PAC waste residue is 10%
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Cement Fly ash River sand Crushed stone Water Superplasticizer 298 93 698 1163 149 3.4 2.2 Coating methods In this study, 3 types of impregnating agents were employed including 6 commercially available products listed in table 2. The coating methods of
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· Frost resistance of concrete with crushed brick as aggregate Architecture and Civil Enginering, 8 (2010), pp. 155-162 Google Scholar Kevern et al., 2010 J.T. Kevern, K. Wang, V.R. Schaefer Effect of coarse aggregate on the freeze – Thaw durability of previous ,
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· While the unit weight of concrete containing 50% of WCAs was 2301 kg/m 3, the unit weight of concrete with whole WCAs was 2251 kg/m 3. Concretes produced with WCA proved to be 6% lighter than concretes with normal aggregates. As a result of freeze–thaw cycles, there was a decrease of as much as 1%.
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· 1. Introduction Structures such as building facades, concrete decks, ports, bridges, viaducts, pavements, sidewalks and runways may suffer severe damage and loss of design life due to frost action, resulting in costly repair and
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· It is an outstanding solution for protecting the environment using manufactured sand instead of natural river sand in concrete. In this paper, tunnel granite muck was processed into low
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· The frost resistance of RAC prepared with high-performance concrete RA is similar or better than that of NAC [86]. When RA originates from high-strength concrete or air-entraining concrete, RAC with excellent frost resistance can be obtained and performs similarly to that of ordinary air-entraining concrete [ 75 , 87 ].
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The study revealed that RAC made with air-entraining RCA matched the frost resistance of NAC, whereas RAC composed of non-air-entraining RCA exhibited a noticeable
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In this work, brick aggregates were immersed in nano-SiO 2 solution for 2 days, and the effects of nano-SiO 2 on the brick aggregate properties, mechanical properties (compressive strength, flexural strength, and splitting tensile strength), frost resistance (apparent phenomenon, mass loss, relative dynamic modulus of elasticity, and compressive
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· DOI: 10.2139/ssrn.4255531 Corpus ID: 253102206 Effect of Polypropylene Fiber on Frost Resistance and Carbonation Resistance of Manufactured Sand Concrete @article{Kang2023EffectOP, title={Effect of Polypropylene Fiber on Frost Resistance and Carbonation Resistance of Manufactured Sand Concrete}, author={Juntao Kang and
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· In this paper, the frost resistance of internal curing concrete with calcined zeolite particles was studied, comparing with ordinary curing concretes. Concrete specimens with compressive strength of 50 MPa and 100 MPa were prepared. Firstly, the pore structure characteristics of the concrete specimens were tested by mercury
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· The paper presents results of the investigation of the air void characteristics and the resistance to cyclic freezing and thawing of air-entrained concrete containing calcareous fly ash. Physical
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· Although the above studies focus on the frost resistance of recycled concrete, the test results have some limitations due to the significant differences between their test materials, test
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· Concrete in saline or coastal settings exposed to freezing temperatures is frequently affected by coupling actions of sulfate assault and freeze–thaw degradation, reducing the service life of concrete structures significantly. This study conducted an accelerated freeze–thaw cycle test in pure water and Na2SO4 solution with a mass
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FROST RESISTANCE OF CONCRETE WITH CRUSHED BRICK AS AGGREGATE UDC 691.322:691.4:620.251.1(045)=111 Ksenija Janković, Dragan Bojović, Dragan Nikolić, Ljiljana Lončar, Zoran Romakov Institute for testing materials, Belgrade, Serbia .
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With both plasticizing (decrease in the water–cement ratio) and air-entraining effects (increase in the amount of entrained air content), the frost resistance of concrete increases, scaling
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Concrete on the basis of crushed brick aggregate has satisfactory compressive and tensile strength and thermal insulating properties but shows weaker resistance to water and frost
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· However, relevant researches are concentrated on mechanical or permeability properties of crushed limestone sand concrete [3, 11, 12], and effects of such CS characteristics on property of CSC, especially frost durability, have been little investigated yet.
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: Yichao ZhangThe frost resistance of recycled brick aggregate concrete was superior to that of ordinary aggregate concrete, while the frost resistance of nano-SiO 2-modified recycled brick
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