A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-fluidity early-strength joint mortar and preparation method thereof
The invention relates to high-fluidity early-strength joint mortar and a preparation method thereof. The joint mortar is prepared from the following components in parts by weight: 30 to 60 parts of cement, 30 to 120 parts of fine aggregate, 2 to 10 parts of a mineral admixture, 0.01 to 0.5 part of a high-efficiency water reducing agent, 2 to 5 parts of an early strength agent, 0.01 to 0.5 part of a water-retaining thickening agent and 10 to 50 parts of water. The preparation method comprises the following steps: uniformly mixing the components to form a dry mixture, adding water into a wet stirring pot, adding the dry mixture, and stirring to obtain the joint mortar. Compared with the prior art, the joint mortar disclosed by the invention has 2-hour large fluidity retentivity and plasticity, so that the labor intensity can be reduced, and mechanical construction can be facilitated; the shear strength of the joint mortar develops quickly and can reach 0.3 MPa within 4 hours, so that the construction period can be greatly shortened, and the joint mortar is also suitable for a fabricated building mode; and experiments show that the 28-day breaking strength of the mortar can be controlled to be 5-10 MPa, the compressive strength can be controlled to be 10-25 MPa, and the mortar is suitable for bonding and sealing various types of sintered building blocks and concrete slab joints.
本发明涉及一种大流动度早强接缝砂浆及其制备方法，接缝砂浆包括以下组分及重量份含量：水泥30‑60份，细集料30‑120份，矿物掺合料2‑10份，高效减水剂0.01‑0.5份，早强剂2‑5份，保水增稠剂0.01‑0.5份，水10‑50份；制备方法包括将上述组分混合均匀，形成干混料，之后将水加入至润湿的搅拌锅中，再加入干混料进行拌和，即得到接缝砂浆。与现有技术相比，本发明中的接缝砂浆所具有的2小时大流动度保持性和可塑性能既能降低劳动强度，又可便于机械化施工；且该接缝砂浆抗剪强度发展快，4小时即达0.3MPa，可大幅度缩短构筑工期，还可适用于装配式建筑方式；实验表明，该砂浆28天抗折强度可控制在5‑10MPa之间，抗压强度可控制在10‑25MPa之间，适用于各种类型烧结砌块、混凝土板缝的粘接和密封。
High-fluidity early-strength joint mortar and preparation method thereof
The invention relates to high-fluidity early-strength joint mortar and a preparation method thereof. The joint mortar is prepared from the following components in parts by weight: 30 to 60 parts of cement, 30 to 120 parts of fine aggregate, 2 to 10 parts of a mineral admixture, 0.01 to 0.5 part of a high-efficiency water reducing agent, 2 to 5 parts of an early strength agent, 0.01 to 0.5 part of a water-retaining thickening agent and 10 to 50 parts of water. The preparation method comprises the following steps: uniformly mixing the components to form a dry mixture, adding water into a wet stirring pot, adding the dry mixture, and stirring to obtain the joint mortar. Compared with the prior art, the joint mortar disclosed by the invention has 2-hour large fluidity retentivity and plasticity, so that the labor intensity can be reduced, and mechanical construction can be facilitated; the shear strength of the joint mortar develops quickly and can reach 0.3 MPa within 4 hours, so that the construction period can be greatly shortened, and the joint mortar is also suitable for a fabricated building mode; and experiments show that the 28-day breaking strength of the mortar can be controlled to be 5-10 MPa, the compressive strength can be controlled to be 10-25 MPa, and the mortar is suitable for bonding and sealing various types of sintered building blocks and concrete slab joints.
本发明涉及一种大流动度早强接缝砂浆及其制备方法，接缝砂浆包括以下组分及重量份含量：水泥30‑60份，细集料30‑120份，矿物掺合料2‑10份，高效减水剂0.01‑0.5份，早强剂2‑5份，保水增稠剂0.01‑0.5份，水10‑50份；制备方法包括将上述组分混合均匀，形成干混料，之后将水加入至润湿的搅拌锅中，再加入干混料进行拌和，即得到接缝砂浆。与现有技术相比，本发明中的接缝砂浆所具有的2小时大流动度保持性和可塑性能既能降低劳动强度，又可便于机械化施工；且该接缝砂浆抗剪强度发展快，4小时即达0.3MPa，可大幅度缩短构筑工期，还可适用于装配式建筑方式；实验表明，该砂浆28天抗折强度可控制在5‑10MPa之间，抗压强度可控制在10‑25MPa之间，适用于各种类型烧结砌块、混凝土板缝的粘接和密封。
High-fluidity early-strength joint mortar and preparation method thereof
一种大流动度早强接缝砂浆及其制备方法
WANG RU (author) / GUO CHUANCHUAN (author) / WANG PEIMING (author)
2021-09-03
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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