Feasibility Study of SBR-Modified Cementitious Mixtures for Use as 3D Additive Construction Materials

Kim, Kwan Kyu; Yeon, Jaeheum; Lee, Hee Jun; Yeon, Kyu-Seok

doi:10.3390/polym11081321

Cited by 11 publications

(5 citation statements)

References 20 publications

(24 reference statements)

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“…al. [13]. However, we still do not know yet whether the mixtures that can be utilized for 3DAC are stable enough to maintain their original dimensions after the mixtures have been printed (i.e., it is exposed to ambient temperature and humidity).…”

Section: Research Objectivesmentioning

confidence: 99%

“…SBR latex was added according to the SBR/cement ratios (i.e., 0, 0.05, 0.10, 0.15, and 0.20). The amount of water used was determined based on a water/cement ratio that could maintain a flow of 70% ± 1% for each mixture because the flow of 70% ± 1% was determined by Kim et al [13] as the optimal flow of SBR-modified cementitious mixtures to apply 3DAC. Table 8 shows the mixture proportions identified for these conditions.…”

Section: Mixture Proportionsmentioning

confidence: 99%

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Dimensional Stability of SBR-Modified Cementitious Mixtures for Use in 3D Additive Construction

Kim¹,

Yeon

Lee

et al. 2019

Applied Sciences

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This study experimentally investigated the dimensional stability of SBR (styrene butadiene rubber)-modified cementitious mixtures in order to determine whether their properties are sustainable as a 3D additive construction material. Dimensional stability refers to resistance to material deformation caused by changes in internal relative humidity and temperature. Hence, drying and thermal shrinkage, which are the primary factors affecting dimensional stability, were tested. The mixing ratio of SBR-modified cementitious mixtures was determined based on a predetermined optimal flow of 70% ± 1% applicable for 3D additive construction applications. The results of this study showed that the elastic modulus, and drying shrinkage strain, excluding the coefficient of thermal expansion, all significantly improved as the SBR/cement ratio increased. In particular, drying shrinkage can be a disadvantage in 3D additive construction because drying in the printed mixtures is rapid due to the large specific exposure area of moldless construction. Consequently, mitigating drying shrinkage is very important. The elastic modulus, drying shrinkage, and coefficient of thermal expansion were all found to be associated with the dimensional stability obtained in this study. It was concluded that using SBR-modified cementitious mixtures was advantageous in terms of dimensional stability.

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Section: Research Objectivesmentioning

confidence: 99%

Section: Mixture Proportionsmentioning

confidence: 99%

Dimensional Stability of SBR-Modified Cementitious Mixtures for Use in 3D Additive Construction

Kim¹,

Yeon

Lee

et al. 2019

Applied Sciences

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“…Since vinyl pyridine latex is poorly immersed in fabrics, its main engineering application is the immersion of tires in the textile industry [18]. In civil engineering field, SBR is utilized as a substitute of cement to boost the hardened properties of concrete [19]. The research outcome was observed that the effect of addition SBR on the characteristics strength concrete.…”

Section: Introductionmentioning

confidence: 99%

Use of Styrene Butadiene Rubber (SBR) Polymer in Cement Concrete

Khan¹

2020

IJST

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Objectives: This research work was adopted to have the maximum strength of concrete mixed with styrene-butadiene rubber (SBR) and to know the effect of SBR on the fresh and hardened concrete. Methods/statistical analysis: The concrete samples were prepared to achieve targeted strength of 3000 lb/in 2. In this experimental work, the mixture of concrete was prepared by adding 0%, 5%, 10%, 15%, and 20% of SBR polymer-cement ratio to check the properties of fresh concrete (slump test and compaction factor test), while rebound hammer test, ultrasonic pulse velocity test (UPV), compressive strength test, and tensile strength test were observed at 7th, 14th, and 28th days, respectively. Findings: Resultantly, the compressive strength and indirect tensile strength boosted by 16% and 13% blended with 15% of SBR polymer in concrete as compared to control concrete after 28th days, respectively. The workability of fresh concrete plummeted with a rise in the amount of SBR polymer in concrete. Application/improvements: Both the quality and high strength of concrete is improved by adding 15% of SBR in concrete.

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“…SBR, çeşitli malzemelerle başarılı bir şekilde birleştirilebilen, bütadien, stiren ve su içeren geniş dağılımlı bir polimerdir [17][18]. İnşaat mühendisliği alanında SBR, betonun sertleşmiş özelliklerini artırmak için çimentonun bir ilavesi olarak kullanılmaktadır [19]. Araştırma sonucunda SBR ilavesinin betonun dayanım özelliklerine etkisi olduğu görülmüştür.…”

Section: Introductionunclassified

Stiren-Bütadien Kauçuk Lateks Modifiyeli Harçların Erken Yaştaki Fiziksel ve Mekanik Özelliklerinin İncelenmesi

Mermerdaş

Alğın

Ekmen

et al. 2021

Türk Doğa Ve Fen Dergisi

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Portland çimentosu, harç ve beton yapımında yaygın olarak kullanılmaktadır. Ancak çimento harcı ve betonun gecikmiş priz süresi, düşük çekme dayanımı, yüksek kuruma büzülmesi ve düşük kimyasal direnç gibi bazı dezavantajları vardır. Polimerler bu dezavantajları ortadan kaldırmanın yanı sıra, betonun işlenebilirliğini ve geçirimsizliğini arttırmak amacıyla katkı maddesi olarak kullanılabilmektedirler. Bu çalışmada, Stiren-Bütadien Kauçuk lateksinin kütlece farklı ikame oranlarını (%0, %5, %10, %15 ve %20) içeren harçların erken yaştaki (14 gün) sertleştirilmiş özellikleri incelenmiştir. Taze harç için yayılma ve birim ağırlık ölçümleri yapılırken, sertleşmiş harç üzerinde birim ağırlık, basınç dayanımı, eğilme dayanımı, su emme ve kapiler su emme testleri yapılmıştır. Sonuç olarak harç karışımlarında lateks miktarı arttıkça dayanım değerlerinin azaldığı görülmüştür. Lateks kullanımına bağlı olarak eğilme dayanım değerlerinde düşüş gözlenirken, %10 oranında lateks kullanımı kontrol karışımına kıyasla numunelerin eğilme dayanımı değerlerinde %3 oranında küçük bir artış sağlamıştır. Taze ve sertleşmiş harç numunelerinin birim ağırlıkları kontrol numunesine göre artmıştır. Kullanılan lateks, harçların işlenebilirliği, su emme ve kılcal su emme değerleri üzerinde olumlu bir etkiye sahip olmuştur.

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Feasibility Study of SBR-Modified Cementitious Mixtures for Use as 3D Additive Construction Materials

Cited by 11 publications

References 20 publications

Dimensional Stability of SBR-Modified Cementitious Mixtures for Use in 3D Additive Construction

Dimensional Stability of SBR-Modified Cementitious Mixtures for Use in 3D Additive Construction

Use of Styrene Butadiene Rubber (SBR) Polymer in Cement Concrete

Stiren-Bütadien Kauçuk Lateks Modifiyeli Harçların Erken Yaştaki Fiziksel ve Mekanik Özelliklerinin İncelenmesi

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