Study on splitting tensile strength of interface between the full lightweight ceramsite concrete and ordinary concrete

Zhu, Hongbing; Fu, Zhenghao; Wang, Ye; Zhang, Na

doi:10.1016/j.cscm.2023.e01829

Cited by 4 publications

(3 citation statements)

References 30 publications

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“…Tensile Strength. Tensile strength is an important parameter in concrete design, as structural loads make concrete vulnerable to tensile cracking [10]. Generally, concrete has been reported to be weak in tension but strong in compression.…”

Section: Specific Gravity =mentioning

confidence: 99%

Tensile Strength Determination for Rice Husk Ash and Corn Cob Ash Blended Cement Concrete

Oyerinde,

Oyewole,

Alake

et al. 2023

KEM

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This study concerns the determination of the tensile strength of concrete produced by partially replacing cement with rice husk ash (RHA) and corn cob ash (CCA). The tensile strength of RHA and CCA blended cement concrete and its suitability as sustainable green concrete materials were investigated. Cubes of 100x 100 x 100 mm unmodified concrete (pure cement) and modified concrete (cement, RHA and CCA) were cast using a mix ratio of 1:2:4 containing binder (cement, RHA, CCA), sand, and coarse aggregate. Physical properties (moisture content, grain size analysis and specific gravity) of RHA and CCA, the effect of curing age and the effect of varying percentage replacement of cement with RHA and CCA blended cement concrete on the tensile strength of concrete were investigated. The varying replacement of cement with RHA and CCA were 0% (100% Cement), 10% (5% RHA, 5% CCA, 90% Cement), 20% (10% RHA, 10% CCA, 80% Cement), 30% (15% RHA, 15% CCA, 70% cement) and 40% (20% RHA, 20%CCA, 60% cement). The tensile strength of the 1:2:4 concrete mix of the unmodified concrete at 28 days strength was valued to be 3.39 N/mm2 while that of modified concrete of 10%, 20%, 30% and 40% RHA, and CCA are 3.30, 2.74, 2.69 and 1.63 N/mm2 respectively, showing that tensile strength of concrete decreases with an increasing amount of RHA and CCA and increases with an increasing number of curing age. This research suggests that RHA and CCA concrete of 10% can be used to produce concrete for structural members, while 20%, 30% and 40% of concrete can be used for weak concrete where filling and other minor works are required.

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Section: Specific Gravity =mentioning

confidence: 99%

Tensile Strength Determination for Rice Husk Ash and Corn Cob Ash Blended Cement Concrete

Oyerinde,

Oyewole,

Alake

et al. 2023

KEM

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“…One promising approach to creating permeable concrete is through the incorporation of ceramsite, a lightweight aggregate material derived from clay minerals [ 9 , 10 , 11 ]. Ceramsite offers several advantages such as a high porosity, low density, and good thermal insulation properties, making it an ideal candidate for use in permeable concrete applications [ 12 , 13 ]. There are many studies on the use of ceramics as substitute aggregates for concrete materials.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Performance Investigation of Epoxy Resin-Based Permeable Concrete Containing Ceramsite

Li,

Cui,

Wang

et al. 2023

Polymers

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Permeable concrete is an innovative type of concrete that provides a sustainable solution for stormwater management by allowing water to seep through and be filtered naturally. This study focuses on the preparation and performance investigation of an epoxy resin-based permeable concrete containing ceramsite. In this study, ceramsite, a lightweight aggregate, is used as a substitute for conventional aggregates in the concrete mixture. The epoxy resin is then added to improve the strength and durability of the concrete. A series of tests, including compressive strength, water permeability, and freeze-thaw resistance tests, are conducted to evaluate the performance of the epoxy resin-based permeable concrete. The results show that with an increasing epoxy resin binder–aggregate ratio, the compressive strength of the epoxy resin-based permeable concrete significantly increases while the permeability coefficient decreases. Different types of aggregates have varying effects on the compressive strength and permeability coefficient of epoxy resin-based permeable concrete, with high-strength clay ceramsite providing the highest compressive strength and lightweight ceramsite having the highest permeability coefficient. In addition, the discrete element simulation method effectively and feasibly determines the ultimate load and accurately simulates the compressive strength of the permeable cement-based mixture, consistent with the measured compressive strength. A quadratic polynomial regression analysis yielded an R2 value of around 0.93, showing a strong relationship between durability and freeze-thaw cycles. The findings contribute to the development of sustainable construction materials for stormwater management and offer potential applications in various infrastructure projects.

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“…With the innovation of construction materials, lightweight [2,3], energy-saving and environmentally friendly materials have been widely used in building structures [4]. FLWCC, for example, has been extensively researched and commonly used in practical engineering and repair fields [5][6][7]. FLWCC is a kind of lightweight aggregate concrete with shale ceramic granules and shale ceramic sand instead of crushed stone and river sand.…”

Section: Introductionmentioning

confidence: 99%

Effect of Planting Rebars on the Shear Strength of Interface between Full Lightweight Ceramsite Concrete and Ordinary Concrete

Zhu,

Duan,

et al. 2023

Coatings

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The use of full lightweight ceramsite concrete (FLWCC) for the repair of ordinary concrete (OC) structures has a good application prospect in the field of engineering structural strengthening. However, the interface here is less studied at present. For this purpose, 10 sets of FLWCC (new concrete)–OC (old concrete) specimens were produced for the shear test to test the bonding properties of the interface. The results showed that the damage form was changed from brittle damage to ductile damage after strengthening. It was proven that planting rebars in the interface could improve the shear performance. The interface shear strength increased with the number of rebars and it had a better effect after the number was more than 2. The strength was related to the rebar diameter and the maximum was obtained when the diameter was 8 mm. The most suitable spacing of the bars was 80 mm. The one-way analysis of variance (ANOVA) showed that the number of rebars had the greatest effect on shear strength followed by rebar diameter, while the effect of the spacing of the bars was less pronounced. Moreover, Fib’s (2010) specification of the interface shear strength formula could be used for the calculation of FLWCC–OC.

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Study on splitting tensile strength of interface between the full lightweight ceramsite concrete and ordinary concrete

Cited by 4 publications

References 30 publications

Tensile Strength Determination for Rice Husk Ash and Corn Cob Ash Blended Cement Concrete

Tensile Strength Determination for Rice Husk Ash and Corn Cob Ash Blended Cement Concrete

Preparation and Performance Investigation of Epoxy Resin-Based Permeable Concrete Containing Ceramsite

Effect of Planting Rebars on the Shear Strength of Interface between Full Lightweight Ceramsite Concrete and Ordinary Concrete

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