Feasible use of recycled CRT funnel glass as heavyweight fine aggregate in barite concrete

Recycling Glass Cullet from Waste CRTs for the Production of High Strength Mortars

“…The elution release test used in the present study is not a codified test, as presently is not established leaching test for mortars or concretes containing hazardous elements, but it is indicative of the possible environmental compatibility of the materials produced. However, for safety, the Pb and Ba release from materials with composition V20 aged 28 d was also accessed by the TCLP test which showed 2.40 and 1.85 mg L −1 , respectively, which are far from the established limits of 5 and 100 mg L −1 , respectively, and in sufficiently good agreement with data reported by other authors [15][16][17]. It must be finally pointed out that TCLP tests are mandatory when hazardous waste materials need to be managed or disposed of to landfill, but equivalent tests on industrial products containing the same waste are presently missing.…”

“…Conversely, the use of waste E-glass from electronic scraps (low-alkali content) improves compressive strength and sulphate resistance and reduces chloride-ion penetration with no adverse alkali silica reaction-expansion effects [14]. The addition of the specific CRT glass waste has been, on the other hand, recently studied [15][16][17]; however additional detailed studies are worthy of interest.…”

Recycled cathode ray tube and liquid crystal display glass as fine aggregate replacement in cementitious materials

“…The results show that the increase in the fresh density is 10.65% and 9.83% with the inclusion of MG and G, respectively. Ling and Poon [34] have reported an increase in the hardened density of barite concretes containing CRT waste glass Table 1 Effect of CRT glass sand on the workability and setting time of mortar and concrete.…”

“…Ling and Poon [34] have reported a reduction in the compressive strength and splitting strength of barite concretes by replacing the natural crushed stone fine aggregate with CRT waste glass (size <5 mm) which has been treated from lead (TFG) or without Table 2 Effect of CRT glass sand on the fresh and hardened density of mortar and concrete.…”

“…CRT glass content (%) Treatment Increased density Romero et al [33] 10, 20 and 30 Without Yes Zhao et al [27] 25, 50 and 75 Without Yes Zhao et al [9] 25, 50 and 75 With Yes Hui and Sun [3] 100 Without and with Yes Ling and Poon [34] 25, 50, 75 and 100 Without and with Yes Ling and Poon [29] 100 With Yes Ling et al [35] 25, 50, 75 and 100 Without and with Yes Ling and Poon [28] 50 and 100 Without and with Yes Ling and Poon [36] 50 and 100 With Yes Ling and Poon [37] 50 and 100 With Yes Ling and Poon [4] 100 With Yes treatment (CFG) at levels of 25%, 50%, 75% and 100%, by volume. The reduction in the 28 days compressive strength is 13.3% and 16.63% with the inclusion of 100% CFG and TFG, respectively.…”