Experimental Investigation of Self-compacting High Performance Concrete Containing Calcined Kaolin Clay and Nano Lime

Abstract

The aim of this research is to investigate the effect of pozzolanic materials and nano particles on improve the strength characteristic by the properties of a self-compacting high-performance concrete that includes calcined clay with nano lime. In this study, two blends systems are worked on, they are the binary and the ternary systems. For binary mixtures, test samples were prepared from 5% CC, 10% CC, 15% CC and 3% NL by partial replacement of the cement weight. While ternary mixtures, samples were prepared from 5% CC 3% NL, 10% CC 3% NL and 15% CC 3% NL by partial substitution of cement weight. The tests conducted on mixes are fresh tests like slump flow diameter, V-funnel, L-box, and segregation resistance. The compressive strength test was determined at 7, 28 and 56 days. While splitting tensile strength tests at 7 and 28 days from the SCHPC produced in the study. It was concluded that the replacement of CC and NL in SCHPC binary mixes reduced the fresh results enough for SCHPC production and gave a general improvement in the compressive strength and splitting tensile strength properties of the SCHPC mixture. SCHPC with 10% CC partial replacement of cement showed higher values of compressive and splitting tensile strength, compared to the reference mixture of SCHPC for all days, thus it was considered the best. Whereas, the strength of the concrete mixtures in the ternary cement mixtures was better than the strength of the mixing and control mortar systems for the same replacement levels in 7 , 28 and 56 days.

Enhancing Mechanical Properties of Self-Compacting Concrete Through the Utilization of Pozzolanic Materials and Waste Products

“…In Figure 17, ternary mixtures containing 30%CKC 10%WMP and 30%CKC 10%LP perform better than binary blends of 30%CKC and the control blend of 100%OPC at 7 and 28 days. Generally, the splitting tensile strength for all types of binary and ternary blends SCC mixes cured of 3 to 90 days was in the range of 7.4-7.92% of their respective compressive strengths, which is less than the outcomes of concretes of average strength, which range from about 8% to 10% [24].…”

“…The percentage and quality of calcined kaolin clay (CKC), waste marble powder (WMP), and limestone powder (LP), as well as their combined effects, are important factors that lessens passing ability similarly to how it decreases filling ability. Some studies reported similar outcomes [21][22][23][24]. The issue might be attributed to the long, hexagonal plates of the calcined kaolin clay, which hinder the smooth flow of the freshly mixed material and increase friction among the components.…”

The Effect of Various Contents of Nano- Lime on The Properties of Self-Compacting Geopolymer Concrete Containing Micro-Steel Fibers

“…These effects of nano lime on SCGPC's fresh characteristics were similar to those found by Ge (43) and Kadhum and Owaid. (23) They found that adding nano-lime to SCC leads to decreased slump flow diameter, L-box height ratio, and increased V-funnel flow times (i.e., increased mixture viscosity). The following paragraphs covered the impact of nano lime on each fresh property test.…”

“…Nano-lime (NL) is cheaper because its abundant supply in limestone and marble, making it suitable for cementitious composites as a filler and nucleation agent. (23,24) However, new research by Assadi et al (17) assessed the inclusion of Calcium Carbonate nanoparticles (NC) in geopolymeric paste based on fly ash up to a 3 % content. While increasing the amount of NC to 2 % enhanced the mechanical characteristics of geopolymer composites, increasing it to 3 % decreased GPC mechanical performance.…”

Unconfined Compressive Strength Characteristics of Overboulder Asbuton and Zeolite Stabilized Soft Soil

“…Pozzolan material itself has long been known in Indonesia as a building material that is mixed lime outages [7]. Recently, pozzolan materials even studied to be implemented as waterproof material for DAM soil [8]. It is even possible to use alkali-activated natural pozzolans to prepare environmentally friendly geopolymer cement leading to the concept of sustainable development [9].…”