Development of lightweight aggregate mortar skin layer for an innovative sandwich concrete composite

Mo, Kim Hung; Hussin, Muhammad Nadzmi; Ling, Tung-Chai; Sulong, N.H. Ramli; Lee, Foo Wei; Yuen, Choon Wah

doi:10.1016/j.jobe.2019.100941

Cited by 14 publications

(7 citation statements)

References 26 publications

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“…[47] This is also comparable with the proposed lightweight panel coating material. [34] 5 | CONCLUSION Geopolymer binder-type coating has showed to be plausible as fire-resistant facing for SIP since it addressed the flammability of the low melting point substrate such as EPS foam core. Geopolymer specimens have exhibited higher degree of fire resistance compared to other binders.…”

Section: Densitymentioning

confidence: 99%

Fire resistance performance of composite coating with geopolymer‐based bio‐fillers for lightweight panel application

Rashid

Sulong

Alengaram

2020

J of Applied Polymer Sci

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Structural insulated panel (SIP) requires fire‐resistant coating due to its substrate having low melting point. This article presents the effect of filler and binder on fire resistance, thermal stability, and surface morphology of composite coating. Palm oil clinker filler‐type coatings made using ordinary Portland cement (OPC:POC), calcium aluminate cement (CAC:POC), and alkali‐activated geopolymer (GP:POC) binders were analyzed. GP:POC was then compared to other geopolymer‐binder type coating with different fillers such as rice husk ash (GP:RHA), metakaolin (GP:MK), and hybrid filler of POC and RHA (GP:POC‐RHA). It was found that geopolymer binder‐type specimens have better fire‐resistance due to low thermal conductivity caused by their porous microstructure and intumescence behavior. Then, the coating formulation was optimized in terms of thickness, alkaline activator ratio and curing regime which produced GP:RHA' that lasted almost 2 hours during flame exposure test. This article concludes that geopolymer‐binder type composite is a plausible fire‐resistant coating for SIP.

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Section: Densitymentioning

confidence: 99%

Fire resistance performance of composite coating with geopolymer‐based bio‐fillers for lightweight panel application

Rashid

Sulong

Alengaram

2020

J of Applied Polymer Sci

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“…To increase the efficiency of lightweight concrete, it is important that structure's indicators (the size and nature of filler's particles distribution, the content of the matrix) provide high heat-shielding properties, the maximum value of elastic modulus of the composite material without loss of system connectivity [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…The need to select the value of the coefficient C for each composition reduces universality of the formula (2). The value of empirical coefficient can be calculated by comparing the formula (2) with other mathematical models, for example, with the well-known Maxwell formula [17]:…”

Section: Introductionmentioning

confidence: 99%

Computer Modeling of Properties of a Composite Material With Porous Fillers

Miryuk¹

2023

Eurasian phys. tech. j.

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The article is devoted to forecasting of heat-shielding and mechanical properties of composite materials based on porous fillers.Analytical dependencies for determining the thermal conductivity coefficient of materials of homogeneous and heterogeneous structure are given. Based on the finite element method, there has been developed a method for numerical determination of the thermal conductivity coefficient of composite materials with a variotropic structure.The results of computer studies are in line with the dependences obtained on analytical models. The expediency of using multilayer composite materials based on porous fillers in load-bearing and enclosing structures of shell and plate types has been shown.

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“…Lee et al 38 explored the influence of elevated temperature on microstructural characteristics of CAC incorporated concrete. They showed that sintering of anhydrous CAC and C-A-(S)-H led to C-A-S gel formation which resulted in the residual strength at 800 C. Mo et al 39 showed that CAC based mortar exhibited greater performance at high temperature than PC based mortar in the investigation of sandwich concrete composite containing lightweight aggregate.…”

Section: Introductionmentioning

confidence: 99%

Basalt fiber reinforced foam concrete with marble waste and calcium aluminate cement

Bayraktar

Yarar

Benli

et al. 2022

Structural Concrete

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As a typical cellular lightweight material, foam concrete is produced by mixing cement, water, aggregate and a suitable foaming agent and has a density usually below 1600 kg/m3. The large number of air spaces present in foam concrete ensures that the concrete has advantages such as lightweight, high fluidity during pouring, excellent thermal and sound insulation, superior fire resistance, and outstanding energy absorption capacity. Its high porosity and the connectivity of the pores, which can allow the entry of negative substances into the concrete environment, cause foam concrete to have a very low physico‐mechanical and durability performance. To eliminate or reduce these disadvantages, this study adopted the use of basalt fibers (BF) as eco‐friendly fiber type and calcium aluminate cement (CAC) as aluminous cement with waste marble powder (WMP) as aggregates in foam concrete. In that respect, 9 mixes with varying content of foaming agent (FC) and basalt fiber have been prepared. Assessment of mechanical performance was based on compressive and flexural strength after 6 h, 1, 7, and 28 days. Dry bulk density, thermal conductivity, porosity, water absorption, and sorptivity of the concretes were determined. Durability characteristics of the concretes were examined by dry shrinkage, high temperature, magnesium sulfate, sulfuric, and hydrochloric acids. The obtained results showed that the content of BF affected the compressive strength of the mixtures slightly negatively or positively depending on the FC. The lowest value in thermal conductivity was gained as 0.645 (W/m K) for the mixture incorporating 1% BF and 50 kg/m3 foam quantity. In addition, the foam concrete incorporating foam of 30 kg/m3 and 1% BF showed the best resistance against MgSO4. The mixture with 2% BF and 30 kg/m3 FC exhibited the lowest mass loss after HCI exposure.

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Development of lightweight aggregate mortar skin layer for an innovative sandwich concrete composite

Cited by 14 publications

References 26 publications

Fire resistance performance of composite coating with geopolymer‐based bio‐fillers for lightweight panel application

Fire resistance performance of composite coating with geopolymer‐based bio‐fillers for lightweight panel application

Computer Modeling of Properties of a Composite Material With Porous Fillers

Basalt fiber reinforced foam concrete with marble waste and calcium aluminate cement

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