Performance evaluation of ultra‐rapid‐hardening roller‐compacted concrete with styrene butadiene latex

Abstract

This study was conducted to evaluate the performance of rapid-hardening roller-compacted concrete containing styrene butadiene latex. This material has no slump and is compacted with a roller after being poured. Volume reduction is not a concern and the material has a high initial strength due to the high pressure applied. Latex improves the durability of ultra-rapid-hardening cement composites. This study evaluated the performance of an optimum mixture (L) and a mixture with no styrene butadiene latex (NL), which had almost the same workability as the optimum mixture. The L mixture exhibited better performance than the NL mixture in terms of bond strength and chloride ion permeability, as well as resistance to abrasion, repeated freezing and thawing, and scaling.

Strength, permeability, and durability of hybrid fiber‐reinforced concrete containing styrene butadiene latex

“…The formation of a latex film improves the bond strength between materials, which reduces the permeability and improves the mechanical properties 18, 19. This approach further improves the workability without increasing the water/cement ratio, thereby reducing the possibility of cracking due to shrinkage of the concrete 18, 19. This study evaluated the effects of varying the amount of added latex on the various properties of HFRC.…”

Strength and durability of rapid set PVA fiber reinforced LMC for pavement repair

“…A bond strength test was conducted on the basis of existing research. 20 A floor concrete specimen was fabricated under conditions that simulated the real overlaying environment with coarse aggregate additive (maximum dimension 25 mm). For the bond test, floor concrete was placed in a 100 × 200 mm 2 diameter cylindrical mould.…”

Bond properties of structural polypropylene fiber in hybrid nonstructural polypropylene and structural polypropylene fiber‐reinforced latex‐modified cement‐based composites

“…However, this approach reduces the workability. The latex polymer surface activation mechanism may compensate for the degraded workability due to the low water–cement ratio 11–13…”

“…Polypropylene (PP) fiber has the disadvantages of weak bonding and poor dispersibility in a cement‐based composite because of its intrinsic hydrophobicity 6, 10. Recently, latex‐modified cement‐based composites (LMCC) have been used for structures that require watertightness 11, 12. Latex improves the performance of HFRCCs by increasing workability, fiber dispersion, and bonding between materials because of the formation of a latex film 11–13.…”

“…Recently, latex‐modified cement‐based composites (LMCC) have been used for structures that require watertightness 11, 12. Latex improves the performance of HFRCCs by increasing workability, fiber dispersion, and bonding between materials because of the formation of a latex film 11–13. Thus, infiltration of latex can also improve the dispersion and bonding properties of PP fiber.…”