Influence of different curing conditions and water to cement ratio on properties of self-compacting concretes

Morteza Nematollahzade, Azim Tajadini, Iman Afshoon, Farhad Aslani

Research output: Contribution to journalArticle

Abstract

Along with the water-to-cement ratio (W/C) as a key factor in the investigation of the properties of the concrete, the conditions and the time of curing also play a very important role on its performance. Therefore, in this research, the effect of different curing conditions such as water curing (wc), plastic curing (pc), out-air curing (oac), room-air curing (rac), wet burlap curing (wbc), out-air-curing compound (oacc) and room-air-curing compound (racc) has been investigated on the properties of self-compacting concrete (SCC) for three different W/C (0.35, 0.40 and 0.45). For this purpose, in addition to fresh concrete tests, compressive strength, splitting tensile strength, water absorption, capillary water absorption, electrical resistivity tests and scanning electron microscope (SEM) of surface morphology and energy-dispersive X-ray (EDS) analysis on the hardened concrete phase were investigated. The results showed that the compressive and splitting tensile strength test had the best outcome in conditions wc, pc, wbc, racc and rac, respectively, at all ages. However, strength at oacc and oac conditions behave differently by changing the W/C and ages. After 56 days, methods pc and wbc, which have the least amount of water absorption at different W/C. In this research, up to 24 h, the lower capillary water absorption test belongs to method pc, wbc, oacc, wc, racc, rac and oac, respectively. According to the results, by decreasing the W/C ratio, the amount of electrical resistance of samples increases and for high W/C ratio the influence of curing methods on this parameter is clearly. The microstructural observations confirm the results described above.

Original languageEnglish
Article number117570
JournalConstruction and Building Materials
Volume237
DOIs
Publication statusPublished - 20 Mar 2020

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Self compacting concrete
Curing
Cements
Water
Air
Water absorption
Plastics
Concretes

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title = "Influence of different curing conditions and water to cement ratio on properties of self-compacting concretes",
abstract = "Along with the water-to-cement ratio (W/C) as a key factor in the investigation of the properties of the concrete, the conditions and the time of curing also play a very important role on its performance. Therefore, in this research, the effect of different curing conditions such as water curing (wc), plastic curing (pc), out-air curing (oac), room-air curing (rac), wet burlap curing (wbc), out-air-curing compound (oacc) and room-air-curing compound (racc) has been investigated on the properties of self-compacting concrete (SCC) for three different W/C (0.35, 0.40 and 0.45). For this purpose, in addition to fresh concrete tests, compressive strength, splitting tensile strength, water absorption, capillary water absorption, electrical resistivity tests and scanning electron microscope (SEM) of surface morphology and energy-dispersive X-ray (EDS) analysis on the hardened concrete phase were investigated. The results showed that the compressive and splitting tensile strength test had the best outcome in conditions wc, pc, wbc, racc and rac, respectively, at all ages. However, strength at oacc and oac conditions behave differently by changing the W/C and ages. After 56 days, methods pc and wbc, which have the least amount of water absorption at different W/C. In this research, up to 24 h, the lower capillary water absorption test belongs to method pc, wbc, oacc, wc, racc, rac and oac, respectively. According to the results, by decreasing the W/C ratio, the amount of electrical resistance of samples increases and for high W/C ratio the influence of curing methods on this parameter is clearly. The microstructural observations confirm the results described above.",
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Influence of different curing conditions and water to cement ratio on properties of self-compacting concretes. / Nematollahzade, Morteza; Tajadini, Azim; Afshoon, Iman; Aslani, Farhad.

In: Construction and Building Materials, Vol. 237, 117570, 20.03.2020.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Influence of different curing conditions and water to cement ratio on properties of self-compacting concretes

AU - Nematollahzade, Morteza

AU - Tajadini, Azim

AU - Afshoon, Iman

AU - Aslani, Farhad

PY - 2020/3/20

Y1 - 2020/3/20

N2 - Along with the water-to-cement ratio (W/C) as a key factor in the investigation of the properties of the concrete, the conditions and the time of curing also play a very important role on its performance. Therefore, in this research, the effect of different curing conditions such as water curing (wc), plastic curing (pc), out-air curing (oac), room-air curing (rac), wet burlap curing (wbc), out-air-curing compound (oacc) and room-air-curing compound (racc) has been investigated on the properties of self-compacting concrete (SCC) for three different W/C (0.35, 0.40 and 0.45). For this purpose, in addition to fresh concrete tests, compressive strength, splitting tensile strength, water absorption, capillary water absorption, electrical resistivity tests and scanning electron microscope (SEM) of surface morphology and energy-dispersive X-ray (EDS) analysis on the hardened concrete phase were investigated. The results showed that the compressive and splitting tensile strength test had the best outcome in conditions wc, pc, wbc, racc and rac, respectively, at all ages. However, strength at oacc and oac conditions behave differently by changing the W/C and ages. After 56 days, methods pc and wbc, which have the least amount of water absorption at different W/C. In this research, up to 24 h, the lower capillary water absorption test belongs to method pc, wbc, oacc, wc, racc, rac and oac, respectively. According to the results, by decreasing the W/C ratio, the amount of electrical resistance of samples increases and for high W/C ratio the influence of curing methods on this parameter is clearly. The microstructural observations confirm the results described above.

AB - Along with the water-to-cement ratio (W/C) as a key factor in the investigation of the properties of the concrete, the conditions and the time of curing also play a very important role on its performance. Therefore, in this research, the effect of different curing conditions such as water curing (wc), plastic curing (pc), out-air curing (oac), room-air curing (rac), wet burlap curing (wbc), out-air-curing compound (oacc) and room-air-curing compound (racc) has been investigated on the properties of self-compacting concrete (SCC) for three different W/C (0.35, 0.40 and 0.45). For this purpose, in addition to fresh concrete tests, compressive strength, splitting tensile strength, water absorption, capillary water absorption, electrical resistivity tests and scanning electron microscope (SEM) of surface morphology and energy-dispersive X-ray (EDS) analysis on the hardened concrete phase were investigated. The results showed that the compressive and splitting tensile strength test had the best outcome in conditions wc, pc, wbc, racc and rac, respectively, at all ages. However, strength at oacc and oac conditions behave differently by changing the W/C and ages. After 56 days, methods pc and wbc, which have the least amount of water absorption at different W/C. In this research, up to 24 h, the lower capillary water absorption test belongs to method pc, wbc, oacc, wc, racc, rac and oac, respectively. According to the results, by decreasing the W/C ratio, the amount of electrical resistance of samples increases and for high W/C ratio the influence of curing methods on this parameter is clearly. The microstructural observations confirm the results described above.

KW - Curing condition

KW - Durability

KW - EDS

KW - Self-compacting concrete

KW - SEM

KW - Water to cement ratio

UR - http://www.scopus.com/inward/record.url?scp=85075264884&partnerID=8YFLogxK

U2 - 10.1016/j.conbuildmat.2019.117570

DO - 10.1016/j.conbuildmat.2019.117570

M3 - Article

VL - 237

JO - Construction and Building Materials

JF - Construction and Building Materials

SN - 0950-0618

M1 - 117570

ER -