Effect of Biopolymer Alginate on some properties of concrete

Abstract

Alginate from Large brown seaweeds act as natural polymer has been investigated as polymer and has been added to concrete in different percentages ( 0% , 0.5% , 1% and 1.5% ) by the cement weight and the study show the effect of using alginate biopolymer admixtures on some of the fresh properties of the concrete (slump & the density fresh) also in the hardened state ( Compressive strength , Splitting tensile strength and Flexural strength ) at 28 days. The mix proportion was (1:2.26:2.26) (cement: sand: gravel) respectively and at constant w/c equal to 0.47. The results indicate that the use of alginate as a percent of the cement weight possess a positive effect on fresh properties of concrete at 28 days. In other words, increasing the percentages of alginate addition has enhanced the slump and fresh density of concrete at 28 days, so the 1.5% alginate addition as percent of the cement weight showed the higher percentage of increasing where it was 2.5% for fresh density and 41%for slump of concrete at 28days compared with the reference mix without any addition, also the hardened properties (compression ,splitting tensile and flexural strength) at 28 days showed an increasing when using alginate at a percentage from the cement weight, so the highest increase was at 0.5% and 1.5% of alginate addition where it was about 40%.

3D bioprinting of mineralizing cyanobacteria as novel approach for the fabrication of living building materials

“…Alignate as a natural polymer has been used as an additive to mortar in several studies, which resulted in an increased compressive and tensile strength (Susilorini et al, 2014;Mohesson and Abbas, 2020) and enhances the building materials flame-, fire-, and heat-resistance significantly (DeBrouse, 2012). Further studies analyzed methylcellulose as an admixture to conventional concrete (Fu and Chung, 1998;Ahmed et al, 2021;Liu et al, 2021) and clay-based cementitious materials (Chen et al, 2020).…”

“…A blend of alginate and methylcellulose (algMC) was chosen as the hydrogel matrix of the LBM because it is a well-established bioink for extrusion-based bioprinting that exhibits high biocompatibility with various mammalian and non-mammalian cell types ( Lode et al, 2015 ; Ahlfeld et al, 2017 ; Schütz et al, 2017 ; Dani et al, 2022 ). Alignate as a natural polymer has been used as an additive to mortar in several studies, which resulted in an increased compressive and tensile strength ( Susilorini et al, 2014 ; Mohesson and Abbas, 2020 ) and enhances the building materials flame-, fire-, and heat-resistance significantly ( DeBrouse, 2012 ). Further studies analyzed methylcellulose as an admixture to conventional concrete ( Fu and Chung, 1998 ; Ahmed et al, 2021 ; Liu et al, 2021 ) and clay-based cementitious materials ( Chen et al, 2020 ).…”

A Comprehensive Review of Plant-Based Biopolymers as Viscosity-Modifying Admixtures in Cement-Based Materials

“…Various sources of alginate have been employed for this purpose, including pure alginate, brown seaweed, sodium alginate (SA), and water-soluble alginate polymers (WSPs). Alginate has indeed demonstrated its potential in improving the overall performance of SCC [57]. For example, it has been shown to enhance workability, reflected by both reduced spreading diameter as well as water retention [52].…”

Strength, Carbonation Resistance, and Chloride-Ion Penetrability of Cement Mortars Containing Catechol-Functionalized Chitosan Polymer

“…Recently, various research studies have mixed functional polymers into cement composites in order to enhance the mechanical properties and durability of cement composites [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ]. Jo et al [ 11 ] examined the characteristics of polymer concrete using unsaturated polyester resins from recycled polyethylene terephthalate plastic waste and recycled concrete aggregate; they reported that the strength of polymer concrete increased as the resin content increased.…”

“…Their findings showed that the use of polymers can significantly improve the tensile and flexural strength properties of ECC. Mohesson et al [ 14 ] characterized concrete mixed with alginate (a biopolymer), which increased both the compressive and tensile strengths of the concrete. In addition, Shanmugavel et al [ 15 ] reported that adding biopolymers from cactus extract to cement paste increased both the viscosity and durability of the concrete.…”