Alkali-O2 oxidized lignin: A bio-based concrete plasticizer

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)

Abstract

Commercial wheat straw soda lignin was used to develop an alkali-O2oxidation method to produce a ready-to-use solution for concrete plasticizing (cement dispersing). Lignin characterization was done directly from the solution. Depending on conditions, oxidation primarily induced either condensation or degradation of lignin. Thus, both the negative charge and the molar mass of the lignin were controlled by the oxidation parameters, and especially by pH. The oxidized lignins were evaluated for their plasticizing performance in cement pastes, mortar, and concrete. Also, their effect on cement hydration was followed and several other properties of fresh andmatured concrete were tested. A commercial lignosulfonate and petroleum-based superplasticizers were used as reference products.The results indicated that alkali-O2oxidation at moderately high lignin dry solids is a promising methodto produce a novel bio-based concrete plasticizer. The oxidized lignins were superior to the lignosulfonate and showed good performance in comparison to the superplasticizers.
Original languageEnglish
Pages (from-to)150-157
JournalIndustrial Crops and Products
Volume74
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

Fingerprint

plasticizers
alkalis
lignin
cement
lignosulfonates
oxidation
wheat straw
petroleum
molecular weight
degradation

Keywords

  • cement
  • concrete
  • soda lignin
  • oxidation
  • oxygen
  • plasticizera

Cite this

@article{c9c14ac0e9314489b04774393de4e100,
title = "Alkali-O2 oxidized lignin: A bio-based concrete plasticizer",
abstract = "Commercial wheat straw soda lignin was used to develop an alkali-O2oxidation method to produce a ready-to-use solution for concrete plasticizing (cement dispersing). Lignin characterization was done directly from the solution. Depending on conditions, oxidation primarily induced either condensation or degradation of lignin. Thus, both the negative charge and the molar mass of the lignin were controlled by the oxidation parameters, and especially by pH. The oxidized lignins were evaluated for their plasticizing performance in cement pastes, mortar, and concrete. Also, their effect on cement hydration was followed and several other properties of fresh andmatured concrete were tested. A commercial lignosulfonate and petroleum-based superplasticizers were used as reference products.The results indicated that alkali-O2oxidation at moderately high lignin dry solids is a promising methodto produce a novel bio-based concrete plasticizer. The oxidized lignins were superior to the lignosulfonate and showed good performance in comparison to the superplasticizers.",
keywords = "cement, concrete, soda lignin, oxidation, oxygen, plasticizera",
author = "A. Kalliola and Tapio Vehmas and T. Liiti{\"a} and T. Tamminen",
year = "2015",
doi = "10.1016/j.indcrop.2015.04.056",
language = "English",
volume = "74",
pages = "150--157",
journal = "Industrial Crops and Products",
issn = "0926-6690",
publisher = "Elsevier",

}

Alkali-O2 oxidized lignin : A bio-based concrete plasticizer. / Kalliola, A. (Corresponding Author); Vehmas, Tapio; Liitiä, T.; Tamminen, T.

In: Industrial Crops and Products, Vol. 74, 2015, p. 150-157.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Alkali-O2 oxidized lignin

T2 - A bio-based concrete plasticizer

AU - Kalliola, A.

AU - Vehmas, Tapio

AU - Liitiä, T.

AU - Tamminen, T.

PY - 2015

Y1 - 2015

N2 - Commercial wheat straw soda lignin was used to develop an alkali-O2oxidation method to produce a ready-to-use solution for concrete plasticizing (cement dispersing). Lignin characterization was done directly from the solution. Depending on conditions, oxidation primarily induced either condensation or degradation of lignin. Thus, both the negative charge and the molar mass of the lignin were controlled by the oxidation parameters, and especially by pH. The oxidized lignins were evaluated for their plasticizing performance in cement pastes, mortar, and concrete. Also, their effect on cement hydration was followed and several other properties of fresh andmatured concrete were tested. A commercial lignosulfonate and petroleum-based superplasticizers were used as reference products.The results indicated that alkali-O2oxidation at moderately high lignin dry solids is a promising methodto produce a novel bio-based concrete plasticizer. The oxidized lignins were superior to the lignosulfonate and showed good performance in comparison to the superplasticizers.

AB - Commercial wheat straw soda lignin was used to develop an alkali-O2oxidation method to produce a ready-to-use solution for concrete plasticizing (cement dispersing). Lignin characterization was done directly from the solution. Depending on conditions, oxidation primarily induced either condensation or degradation of lignin. Thus, both the negative charge and the molar mass of the lignin were controlled by the oxidation parameters, and especially by pH. The oxidized lignins were evaluated for their plasticizing performance in cement pastes, mortar, and concrete. Also, their effect on cement hydration was followed and several other properties of fresh andmatured concrete were tested. A commercial lignosulfonate and petroleum-based superplasticizers were used as reference products.The results indicated that alkali-O2oxidation at moderately high lignin dry solids is a promising methodto produce a novel bio-based concrete plasticizer. The oxidized lignins were superior to the lignosulfonate and showed good performance in comparison to the superplasticizers.

KW - cement

KW - concrete

KW - soda lignin

KW - oxidation

KW - oxygen

KW - plasticizera

U2 - 10.1016/j.indcrop.2015.04.056

DO - 10.1016/j.indcrop.2015.04.056

M3 - Article

VL - 74

SP - 150

EP - 157

JO - Industrial Crops and Products

JF - Industrial Crops and Products

SN - 0926-6690

ER -