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1 Journal of Ecological Engineering

1 2025

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Impact of curing technique on roller-compacted concrete pavement production

Al-Ani Abdullah, Abbas Zena K.

Journal of Ecological Engineering

2025

Vol. 26, nr 3

325--335

Roller-compacted concrete pavement (RC-C-P) is an economical and fast structure that has a relatively dry consistency (zero-slump), but requires more curing care and consideration than conventional concrete pavements. The objective of the research was to investigate the influence of various curing kinds and impact on the mechanical characteristics off RC-C-P. Three various curing techniques can be investigated, compared to lab-normal curing. The liquid membrane-forming compound (Sika Antisol WB) is by spraying to the surface of samples after 2-hour casting and then spraying the sides of the sample following mold extraction. Water is sprayed twice a day (8:30 a.m. and 2:30 p.m.) for three-days and also the damp burlap curing continues three-days. The best curing technique can be recommended is liquid membrane-forming compound technique, since the improvement of compressive strength results up to (12.80, 11.26 and 11.96)% at 7, 28 and 90 days, respectively, compared to lab-normal curing results. While the compressive strength results reduced by (2.37, 3.64 and 4.29)% at 7, 28 and 90 days, respectively, using the damp burlap curing technique compared to lab-normal curing results, it should be taken into consideration that it is still within ACI recommendation (not less than 28 MPa). Finally, the spray-water curing technique needs to be carefully employed in mix design, due to the reduction up to (9, 8.94 and 7.67)% at 7, 28 and 90 days, respectively, for compressive strength test, compared to lab-normal curing results. The results of tensile and flexural strength for RC-C-P with different curing using similar trends with compressive strength results for all curing techniques.