A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Anti-crack water-resistant phosphogypsum road base material and preparation method thereof
The invention belongs to the technical field of building materials, and discloses an anti-crack water-resistant phosphogypsum road base material and a preparation method thereof. Comprising a base material and an additive, and the base material is prepared from the following raw materials in percentage by weight: 15-25% of calcined phosphogypsum, 43-47% of natural coarse aggregate, 28-32% of natural fine aggregate and 3-8% of Portland cement; the additive is a composition of a modifier, an EVA (Ethylene Vinyl Acetate) emulsion, a PU (Polyurethane) emulsion and water, and the mass ratio of the base material to the modifier to the EVA emulsion to the PU emulsion to the water is 100: (1.1-2.6): (0.25-2): (0.25-2): (4-11). According to the invention, the shrinkage of the cement mortar is limited by utilizing the organic gelling effect of the EVA and PU emulsion, and particularly, the early self-shrinkage deformation before 28 days is reduced, so that the cracking problem caused by dry shrinkage and temperature shrinkage of the road base material is effectively reduced, and the mechanical properties such as compressive strength and the like of the phosphogypsum and the road base material which are stabilized by a gelling material system can be effectively maintained.
本发明属于建筑材料技术领域，公开了一种抗裂耐水型磷石膏道路基层材料及其制备方法。包括基料和添加剂，所述基料由如下重量百分数的原料组成：煅烧磷石膏15～25％、天然粗骨料43～47％、天然细集料28～32％、硅酸盐水泥3～8％；所述添加剂为改性剂、EVA乳液、PU乳液和水的组合物，基料、改性剂、EVA乳液、PU乳液和水的质量比为100：1.1～2.6：0.25～2：0.25～2：4～11。本发明利用EVA和PU乳液的有机胶凝作用限制水泥砂浆的收缩，特别是28d前的早期自收缩变形减小，有效减少道路基层材料干缩温缩导致的开裂问题，能有效保持胶凝材料体系稳定磷石膏与的路面基层材料抗压强度等力学性能。
Anti-crack water-resistant phosphogypsum road base material and preparation method thereof
The invention belongs to the technical field of building materials, and discloses an anti-crack water-resistant phosphogypsum road base material and a preparation method thereof. Comprising a base material and an additive, and the base material is prepared from the following raw materials in percentage by weight: 15-25% of calcined phosphogypsum, 43-47% of natural coarse aggregate, 28-32% of natural fine aggregate and 3-8% of Portland cement; the additive is a composition of a modifier, an EVA (Ethylene Vinyl Acetate) emulsion, a PU (Polyurethane) emulsion and water, and the mass ratio of the base material to the modifier to the EVA emulsion to the PU emulsion to the water is 100: (1.1-2.6): (0.25-2): (0.25-2): (4-11). According to the invention, the shrinkage of the cement mortar is limited by utilizing the organic gelling effect of the EVA and PU emulsion, and particularly, the early self-shrinkage deformation before 28 days is reduced, so that the cracking problem caused by dry shrinkage and temperature shrinkage of the road base material is effectively reduced, and the mechanical properties such as compressive strength and the like of the phosphogypsum and the road base material which are stabilized by a gelling material system can be effectively maintained.
本发明属于建筑材料技术领域，公开了一种抗裂耐水型磷石膏道路基层材料及其制备方法。包括基料和添加剂，所述基料由如下重量百分数的原料组成：煅烧磷石膏15～25％、天然粗骨料43～47％、天然细集料28～32％、硅酸盐水泥3～8％；所述添加剂为改性剂、EVA乳液、PU乳液和水的组合物，基料、改性剂、EVA乳液、PU乳液和水的质量比为100：1.1～2.6：0.25～2：0.25～2：4～11。本发明利用EVA和PU乳液的有机胶凝作用限制水泥砂浆的收缩，特别是28d前的早期自收缩变形减小，有效减少道路基层材料干缩温缩导致的开裂问题，能有效保持胶凝材料体系稳定磷石膏与的路面基层材料抗压强度等力学性能。
Anti-crack water-resistant phosphogypsum road base material and preparation method thereof
一种抗裂耐水型磷石膏道路基层材料及其制备方法
CHEN XUYONG (author) / WU YANG (author) / SEO WOONG (author) / WU QIAOYUN (author) / CHENG SHUKAI (author) / BIAN XIAOYA (author) / LIU JIE (author) / CHI RU'AN (author)
2024-01-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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