Nghiên cứu chế tạo vật liệu composite từ nhựa polyetylen (PE) phế thải và vỏ trấu để sản xuất thử nghiệm cọc phục vụ công trình chống sạt lở bờ sông trên địa bàn tỉnh Vĩnh Long

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Đình Chinh Nguyễn, Thành Nhân Nguyễn, Văn Dũng Nguyễn, Minh Sơn Phạm, Anh Đức Phùng, Chí Sỹ Phùng, Phương Chiến Trần, Hồng Phong Võ, Thành Nam Vũ

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Môi trường, 2023

Mô tả vật lý: tr.23-27

Bộ sưu tập: Metadata

ID: 341183

Thêm vào giỏ Liên kết toàn văn

Bài báo trình bày kết quả khảo sát các yếu tố ảnh hưởng (phần khối lượng vỏ trấu, phần khối lượng chất trợ tương hợp (MAPE), kích thước hạt trấu) đến tính năng cơ lý, độ cứng và độ hút nước của vật liệu composite PE/trấu. Kết quả khảo sát cho thấy sự gia tăng phần khối lượng trấu từ 80 đến 120 làm tăng độ bền cơ lý (kéo đứt, uốn, nén) của vật liệu nhưng không nhiều và khi tiếp tục tăng đến 140 phần khối lượng thì các chỉ số này lại giảm dẩn
Độ cứng của vật liệu composite đạt tới mức ổn định khi phần khối lượng trấu tăng trên 130
Độ hấp thụ nước tăng khi tăng hàm lượng trấu. Sự thay đổi phần khối lượng MAPE từ 0.5 đến 2.0 làm tăng độ bền cơ lý của vật liệu nhưng không nhiều và khi tiếp tục tăng đến 3.5 phần khối lượng thì các chỉ số này lại hầu như không đổi
Độ cứng của vật liệu composite đạt tới mức ổn định khi phần khối lượng MAPE tăng trên 3.5
Độ hấp thụ nước giảm khi tăng phần khối lượng MAPE từ 0.5 tới 2.0 và tăng đến 3.5. Sự thay đổi kích thước hạt trấu từ 0,1 lên 1,0 mm làm tăng độ bền cơ lý của vật liệu nhưng không nhiều và khi tiếp tục tăng đến trên 2 mm thì các chỉ số này lại giảm, chỉ số đạt cao nhất khi kích thước hạt trấu đạt từ 0,5-1,0 mm
Độ cứng của vật liệu composite đạt tới mức ổn định khi kích thước hạt trấu tăng từ trên 1,0 đến 2,0 mm và giảm khi tăng kích thước hạt trấu trên 2,0 mm
Độ hấp thụ nước đạt thấp nhất khi kích thước hạt trấu <
0,1 mm và đạt từ 1,0-1,5 mm. Trên cơ sở kết quả khảo sát, các tác giả đã thiết kế, sản xuất thử nghiệm cọc composite PE/trấu phục vụ công trình chống sạt lở trên địa bàn tỉnh Vĩnh Long.This paper presents the survey results of influencing factors (weight fractions of rice husk, MAPE, rice husk grain size) on the physico-mechanical strength, hardness and water absorption of PE/rice husk composite materials. The survey results show that the increase in rice husk content from 80 to 120 parts by weight increases the physico-mechanical strength (tensile, bends, compresses) of the material but not much and when it continues to increase to 140 parts by weight, these indexes fell again
The hardness of the composite material reaches a stable level when the rice husk weight increases above 130
Water absorption increased with increasing rice husk content. The change in MAPE mass fraction from 0.5 to 2.0 increases the physico-mechanical strength of the material but not much and when it continues to increase to 3.5. volume, these indexes are almost unchanged
The hardness of the composite material reaches a stable level when the MAPE mass fraction increases above 3.5
Water absorption decreases with increasing MAPE mass fraction from 0.5 to 2.0 and increases to 3.5. The change in rice husk grain size from 0.1 to 1.0 mm increased the physico-mechanical strength of the material but not much and when continued to increase to over 2 mm, these indexes decreased again, the index reached the highest when the size of rice husks reached from 0.5-1.0 mm
The hardness of composite materials reached a stable level when the grain size increased from over 1.0 to 2.0 mm and decreased when the grain size increased over 2.0 mm
Water absorption is lowest when the size of the husk is <
0.1 mm and from 1.0-1.5 mm. Based on the survey results, the authors have designed, trial production of PE/rice husk composite piles for erosion control works in Vinh Long province.

1. Đọc trực tuyến

1. Đọc trực tuyến

Tạo bộ sưu tập với mã QR