A Novel, Multifunctional, Floatable, Lightweight Cement Composite: Development and Properties

Huang, Zhenyu; Wang, Fang; Zhou, Yingwu; Sui, Lili; Krishnan, Padmaja; Liew, Jat-Yuen. Richard

doi:10.3390/ma11102043

Cited by 30 publications

(13 citation statements)

References 46 publications

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“…A series of works have shown the high efficiency of use as lightweight aggregates for cement systems [5][6][7][8][9][10], including building mortars and dry building mixtures of hollow microspheres -glass and aluminosilicate. The spherical shape of the aggregate provides greater plastic properties of the mixes and higher compressive strength.…”

Section: Problem Statementmentioning

confidence: 99%

Properties of lightweight dry masonry mixtures for winter conditions

Semenov

2019

E3S Web Conf.

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The construction of building envelopes using effective small-piece elements requires the use of lightweight masonry mortars, obtained, as a rule, from dry mixtures. One of the most effective ways to obtain such mortars is the introduction of hollow ceramic microspheres into their composition as a lightweight filler. For the climatic conditions of the Russian Federation, it is relevant to use dry masonry mixtures in the winter version, which gain strength at negative temperatures. The main purpose of this work was the development of optimal compositions of modified dry masonry mixes with hollow ceramic microspheres and antifreeze additives for use in winter conditions. Determination of the main properties of dry mixes and masonry mortars was carried out according to standard methods. X-ray diffraction and scanning electron microscopy were used to research of the microstructure and phase composition of the materials. As a result of this research, the compositions of the lightweight dry masonry mixtures for winter conditions were developed. The main properties of the mortar mixtures and mortars were determined and structure and composition of new phases of cement stone were studied as well.

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Section: Problem Statementmentioning

confidence: 99%

Properties of lightweight dry masonry mixtures for winter conditions

Semenov

2019

E3S Web Conf.

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“…Concrete using lightweight aggregates, such as expanded clay/shale [1], fly ash aggregates [2], fly ash cenospheres [3,4], perlite [5], pumice [6], are classified as Lightweight aggregate concrete (LWAC). As summarized in Huang et al [4], LWAC has an apparent density of less than, e.g., 2000 kg/m 3 with a compressive strength of 8-80MPa, 1950kg/m 3 with a compressive strength of 10-38.5MPa and 1850 kg/m 3 with a compressive strength of 17-35MPa, respectively, as specified in JGJ 51-2002 [7], CEB-FIP 2010 and BS EN 13055-2016 [8,9], ACI 213R-14 and ASTM C330 [10,11]. Lightweight aggregates mainly reduce self-weight and improve thermal performance of concrete [12,13].…”

Section: Introductionmentioning

confidence: 99%

“…LWAC can be used in industrial and building structures to reduce structural weight and the materials used in construction. LWAC also reduces the transportation and hoisting cost during construction, the gravity load on the foundation, thus the reinforcement and labor cost [1][2][3][4][5][6][12][13][14][15]. Due to the superior performance of LWAC, it has been used in, e.g., bridges [16], prefabricated construction [17] and offshore structures [18].…”

Section: Introductionmentioning

confidence: 99%

“…Due to the superior performance of LWAC, it has been used in, e.g., bridges [16], prefabricated construction [17] and offshore structures [18]. To further reduce the self-weight of offshore structures, Huang et al [3,4], Chia et al [19] and Wu et al [20] developed a novel ultralightweight cement composite (ULCC) using fly ash cenospheres. The apparent density of the ULCC is only 1450kg/m 3 with a 28-day compressive strength of 60MPa.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic compressive behavior of a novel ultra-lightweight cement composite incorporated with rubber powder

Huang

Sui

Wang

et al. 2020

Composite Structures

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This paper develops a novel rubberized ultra-lightweight high ductility cement composite (RULCC) with added rubber powder and low content PE fiber (0.7%), and investigates the dynamic compressive response and failure mechanism of the RULCC both experimentally and analytically. The test program examines the dynamic compressive stress-strain relationship of the RULCC through Split Hopkinson Pressure Bar (SHPB) impact tests. The results show that the rubber powder aggregates have significant effect on the compressive strength, stress-strain relations and failure mechanism of the RULCC. A volume replacement of fine aggregates with 5%, 10% and 20% rubber power results in a reduction in static compressive strength by 29.5%, 47.7% and 60.3%, respectively. The RULCC with a low fiber content of 0.7% in volume exhibits a 3% direct tensile strain, and a 4-5% tensile strain can still be achieved after 10% rubber powder is added to the RULCC, showing a high ductility of the material. The SHPB impact test shows that the compressive strength increases with strain rate. An empirical model, taking into account of the replacement ratio of the rubber powder aggregates in the RULCC, is developed in this paper to evaluate the Dynamic Increasing Factor (DIF). The experimental and analytical studies are essential to better understand the fundamental dynamic behavior of the RULCC for its further applications in engineering applications, such as protective structures, etc.

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“…Cement compositions using hollow microspheres (glass, ceramic (aluminosilicate), polymeric) as a lightweight aggregate are being more and more studied and developed [5][6][7][8][9]. The spherical shape of the aggregate provides a greater plasticity of mixtures and a higher compressive strength.…”

Section: Introductionmentioning

confidence: 99%

Structure and properties of masonry mortars based on ceramic microspheres

Semenov

2018

MATEC Web Conf.

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Modern requirements in the field of energy and resource saving determines the need to apply effective fencing structures. To ensure the thermal homogeneity of the structures erected with small-piece masonry elements (ceramic and light-weight concrete units etc.), it is necessary to use lightweight mortars. One of the most effective methods to obtain such mortars is the introduction of hollow ceramic microspheres as a filler into their composition. The purpose of this work is studying of the composition and structure of a cement masonry mortar with hollow ceramic microspheres and modifying additives in correlation with its properties. The methods of thermogravimetric analysis, scanning electron microscopy, X-ray diffraction and standard test methods for the masonry mortars were used. The effect of the structural characteristics of the composite on the properties of final product was analyzed. It is established that the microstructure of the modified mortar samples is more compact in compare with basic composition, and the surface of the microspheres is covered by the products of the chemical interaction of its walls with the cement matrix. The aforesaid research allowed to obtain the high-performance lightweight mortars with hollow ceramic microspheres.

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A Novel, Multifunctional, Floatable, Lightweight Cement Composite: Development and Properties

Cited by 30 publications

References 46 publications

Properties of lightweight dry masonry mixtures for winter conditions

Properties of lightweight dry masonry mixtures for winter conditions

Dynamic compressive behavior of a novel ultra-lightweight cement composite incorporated with rubber powder

Structure and properties of masonry mortars based on ceramic microspheres

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