In this study, the influences of air-entraining, set accelerating and superplasticizer admixtures on the properties of borogypsum containing cement mortars were investigated. According to results, by using 3% borogypsum and water/binder ratio of 0.45, the compressive and flexural strength values were increased up to 196.38%. The usage of various ratios of air-entraining and set accelerating admixtures showed reverse effects on the compressive and flexural strength. However, 0.4% superplasticizer containing mortars had 65.39 MPa compressive strength and 9.08 MPa flexural strength which were 33.12% and 26.82% higher than the reference. Durability test results showed addition 3% borogypsum provided endurance to sulfate attacks up to 30 days.
HuangH., ShenX. and ZhengJ., Modeling, analysis of interaction effects of several chemical additives on the strength development of silicate cement, Construction and Building Materials24 (2010), 1937–1943.
2.
PlankJ., SakaiE., MiaoC.W., YudC. and HongJ.X., Chemical admixtures-Chemistry, applications and their impact on concrete microstructure and durability, Cement and Concrete Research78 (2015), 81–99.
3.
American Concrete Institute, Chemical admixtures for concrete, ACI Education Bulletin (2013), E4–E12.
4.
Janowska-RenkasE., The influence of the chemical structure of polycarboxylic superplasticizers on their effectiveness in cement pastes, Procedia Engineering108 (2015), 575–583.
5.
ShiC., ZhangG., HeT. and LiY., Effects of superplasticizers on the stability and morphology of ettringite, Construction and Building Materials112 (2016), 261–266.
6.
AdjoudjM., EzzianeK., KadriE.H., Tung NgoT. and KaciA., Evaluation of rheological parameters of mortar containing various amounts of mineral addition with polycarboxylate superplasticizer, Construction and Building Materials70 (2014), 549–559.
7.
OuyangX., GuoY. and QiuX., The feasibility of synthetic surfactant as an air entraining agent for the cement matrix, Construction and Building Materials22 (2008), 1774–1779.
8.
StencelJ.M., SongH. and CangialosiF., Automated foam index test: Quantifying air entraining agent addition and interactions with fly ash-cement admixtures, Cement and Concrete Research39 (2009), 362–370.
9.
BostP., RegnierM. and HorgniesM., Comparison of the accelerating effect of various additions on the early hydration of Portland cement, Construction and Building Materials113 (2016), 290–296.
10.
KavasT., OlgunA. and ErdoganY., Setting and hardening of borogypsum–Portland cement clinker–fly ash blends. Studies on effects of molasses on properties of mortar containing borogypsum, Cement Concrete Research35 (2005), 711–718.
11.
ÖzdemirM. and UyganN., Özturk, Utilization of clay wastes containing boron as cement additives, Cement Concrete Research33 (2003), 1659–1661.
12.
KipcakA.S., GursesP., DerunE.M., TugrulN. and PiskinS., Characterization of boron carbide particles and its shielding behavior against neutron radiation, Energy Conversion and Management72 (2013), 39–44.
13.
SariyerD., KüçerR. and
KüçerN., Neutron shielding properties of concretes containing boron carbide and ferro – boron, Procedia - Social and Behavioral Sciences195 (2015), 1752–1756.
14.
TarganS., OlgunA., ErdoganY. and SevincV., Influence of natural pozzolan, colemanite ore waste, bottom ash, and fly ash on the properties of Portland cement, Cement Concrete Research33 (2003), 1175–1182.
15.
OlgunA., KavasT., ErdoganY. and OnceG., Physico-chemical characteristics of chemically activated cement containing boron, Build Environment42 (2007), 2384–2395.
16.
TopcuI.B. and BogaA.R., Effect of boron waste on the properties of mortar and concrete, Waste Manage Research28 (2010), 626–633.
17.
GenceO., BrostowW., OzelC. and FilizM., An investigation on the concrete properties containing colemanite, International Journal of Physical Sciences5 (2010), 216–225.
18.
BoncukcuogluR., YilmazM.T., KocakerimM.M. and TosunogluV., Utilization of borogypsum as set retarder in Portland cement production, Cement and Concrete Research32 (2002), 471–475.
19.
SevimU.K. and TumenY., Strength and fresh properties of borogypsum concrete, Construction and Building Materials48 (2013), 342–347.
20.
ElbeyliI.Y., Utilization of Industrial borax wastes (BW) for Portland cement production, Turkish Journal of Engineering and Environmental Sciences28 (2004), 281–287.
21.
DavrazM., KilincarslanS. and PehlivanogluE., The effects of accelerating admixture on the mechanical properties of boric acid added mortars, Acta Physica Polonica125 (2014), 263–267.
22.
ErdoganY., YasarE. and RanjithP.G., Obtaining lightweight concrete using colemanite waste and acidic pumice, Physicochemical Problems of Mineral Processing52 (2016), 35–43.
23.
TS EN 196-1, Methods of testing cement - Part 1: Determination of strength, 2009.
24.
TS EN 480-2, Admixtures for concrete, mortar and grout - Test methods - Part 2: Determination of setting time, 2008.
25.
TS EN 1015-3, Methods of test for mortar for masonry- Part 3: Determination of consistence of fresh mortar (by flow table), 2000.
26.
ErdoganY., ZeybekM.S. and DemirbaşA., Cement mixes containing colemanite from concentrator wastes, Cement and Concrete Research28 (1998), 605–609.
27.
GagnéR., Air entraining agents. Science and Technology of Concrete Admixtures, AitcinP.C., FlattR.J., Ed., Woodhead Publishing: United Kingdom; 2016, pp. 379–391.
28.
Guoxin LiG.Z. and
LiY., Effects of superplasticizers and retarders on the fluidity and strength of sulphoaluminate cement, Construction and Building Materials126 (2016), 44–54.
29.
HolleyJ.C., PaineK. and PapatzaniS., Effects of nanosilica on the calcium silicate hydrates in Portland cement–fly ash systems, Advances in Cement Research27 (2014), 1300098.
30.
ChoudharyH.K., AnupamaA.V., KumarR., PanziM.E., MatteppanavarS., SherikarB.N. and SahooB., Observation of phase transformations in cement during hydration, Construction and Building Materials101 (2015), 122–129.
31.
SinghL.P., AgarwalS.K., BhattacharyyaK., SharmaU. and AhalawatS., Preparation of silica nanoparticles and its beneficial role in cementitious materials, Nanomaterials and Nanotechnology1 (2011), 44–51.
32.
GhoshS.N., IR spectroscopy, Handbook of Analytical Techniques in Concrete Science and Technology,
RamachandranV.S.,
BeaudoinJ.J., Ed., William Andrew Publishing: New York, 2002, pp. 174–204.
33.
XiongC., JiangL., XuY. and GuoQ., Influences of exposure condition and sulfate salt type on deterioration of paste with and without fly ash, Construction and Building Materials113 (2016), 951–963.
34.
ArelH.Ş.,
ThomasB.S., The effects of nano- and micro-particle additives on the durability and mechanical properties of mortars exposed to internal and external sulfate attacks, Results in Physics7 (2017), 843–851.
35.
High-Strength Concrete, Portland Cement Association 1994; 15.
